DESCRIPTION The fuel trim
is related to the feedback compensation value, not to the basic
injection duration. The fuel trim consists of both the short-term and
long-term fuel trims. The short-term fuel trim
is fuel compensation that is used to constantly maintain the air fuel
ratio at stoichiometric levels. The signal from the air fuel ratio
sensor (sensor 1) indicates whether the air fuel ratio is rich or lean
compared to the stoichiometric ratio. This triggers a reduction in the
fuel injection volume if the air fuel ratio is rich and an increase in
the fuel injection volume if lean. Factors such
as individual engine differences, wear over time and changes in
operating environment cause short-term fuel trim to vary from the
central value. The long-term fuel trim, which controls overall fuel
compensation, compensates for long-term deviations in the fuel trim from
the central value caused by the short-term fuel trim compensation. |
DTC No. | Detection Item |
DTC Detection Condition | Trouble Area |
MIL | Memory |
Note | | P017100 |
System Too Lean Bank 1 |
With
a warm engine and stable air fuel ratio feedback, the fuel trim is
considerably in error to the lean side (2 trip detection logic). |
- Intake system
- Port fuel injector assembly
- Direct fuel injector assembly
- Mass air flow meter sub-assembly
- Engine coolant temperature sensor
- Fuel pressure
- Fuel pressure sensor (for high pressure side)
- Gas leak from exhaust system
- Open or short in air fuel ratio sensor (sensor 1) circuit
- Air fuel ratio sensor (sensor 1)
- PCV valve and hose
- PCV hose connections
- EGR valve assembly
- Wire harness or connector
- ECM
| Comes on |
DTC stored | SAE Code: P0171 | |
P017200 | System Too Rich Bank 1 |
With
a warm engine and stable air fuel ratio feedback, the fuel trim is
considerably in error to the rich side (2 trip detection logic). |
- Port fuel injector assembly
- Direct fuel injector assembly
- Mass air flow meter sub-assembly
- Engine coolant temperature sensor
- Ignition system
- Fuel pressure
- Fuel pressure sensor (for high pressure side)
- Gas leak from exhaust system
- Open or short in air fuel ratio sensor (sensor 1) circuit
- Air fuel ratio sensor (sensor 1)
- EGR valve assembly
- Wire harness or connector
- ECM
| Comes on |
DTC stored | SAE Code: P0172 | |
P117000 | Fuel Performance/Port Injector |
Although
a DTC is stored for a rich or lean condition, the amount of fuel trim
during direct injection is normal (1 trip detection logic) |
- Port fuel injector assembly
- Direct fuel injector assembly
- Fuel pressure
- ECM
| Does not come on |
DTC stored | SAE Code: P1170 | |
P117B00 | Fuel Performance/Direct Injector |
Although
a DTC is stored for a rich or lean condition, the amount of fuel trim
during port injection is normal (1 trip detection logic) |
- Port fuel injector assembly
- Direct fuel injector assembly
- Fuel pressure
- ECM
| Does not come on |
DTC stored | SAE Code: P117B |
HINT:
- When DTC P017100 is stored, the actual air fuel ratio is on the lean
side. When DTC P017200 is stored, the actual air fuel ratio is on the
rich side.
- If the vehicle runs out of fuel, the air fuel ratio is lean and DTC P017100 may be stored. The MIL is then illuminated.
- When DTC P117000 or P117B00 is output , it may not be possible to
precisely determine whether the port injection or the direct injection
is malfunctioning, depending on the conditions. In this case, perform an
Active Test (Control the Injection Mode) to determine which injection
system is malfunctioning.
MONITOR DESCRIPTION Under
closed loop fuel control, fuel injection volumes that deviate from
those estimated by the ECM cause changes in the long-term fuel trim
compensation value. The long-term fuel trim is adjusted when there are
persistent deviations in the short-term fuel trim values. Deviations
from the fuel injection volumes estimated by the ECM also affect the
average fuel trim learned value, which is a combination of the average
short-term fuel trim (fuel feedback compensation value) and the average
long-term fuel trim (learned value of the air fuel ratio). If the
average fuel trim learned value exceeds the malfunction thresholds, the
ECM interprets this as a malfunction of the fuel system and stores a
DTC. Example: The average fuel trim learned value is +35% or higher, or -35% or less, the ECM interprets this as a fuel system malfunction.
 MONITOR STRATEGY |
Related DTCs | P0171: Fuel trim lean
P0172: Fuel trim rich P1170: Fuel trim (port injection fail)
P117B: Fuel trim (direct injection fail) | |
Required Sensors/Components (Main) | Fuel system | |
Required Sensors/Components (Related) |
Air fuel ratio sensor (sensor 1) Mass air flow meter sub-assembly
Crankshaft position sensor | |
Frequency of Operation | Continuous | |
Duration | Within 10 seconds | |
MIL Operation | 2 driving cycles: P0171 and P0172
Immediate: P1170 and P117B | |
Sequence of Operation | None | TYPICAL ENABLING CONDITIONS |
Monitor runs whenever the following DTCs are not stored |
P0010, P1360, P1362, P1364, P1366, P2614 (Motor drive VVT system control module)
P0011 (VVT system - advance) P0012 (VVT system - retard) P0013 (Exhaust VVT oil control solenoid)
P0014 (Exhaust VVT system - advance) P0015 (Exhaust VVT system - retard)
P0016 (VVT system - misalignment) P0017 (Exhaust VVT system - misalignment)
P0031, P0032, P101D (Air fuel ratio sensor (sensor 1) heater) P0101, P0102, P0103 (Mass air flow meter)
P0107, P0108 (Manifold absolute pressure) P0117, P0118 (Engine coolant temperature sensor)
P0121, P0122, P0123, P0222, P0223, P2135 (Throttle position sensor)
P0125 (Insufficient coolant temperature for closed loop fuel control)
P0191, P0192, P0193 (Fuel pressure sensor (for high pressure side))
P0201, P0202, P0203, P0204, P062D, P21CF, P21D0, P21D1, P21D2 (Fuel injector)
P0335, P0337, P0338 (Crankshaft position sensor) P0340, P0342, P0343 (Camshaft position sensor)
P0365, P0367, P0368 (Exhaust camshaft position sensor) P0401 (EGR system)
P107B, P107C, P107D (Fuel pressure sensor (for low pressure side))
P11EA, P11EC, P11ED, P11EE, P11EF, P219A, P219C, P219D, P219E, P219F (Air-fuel ratio imbalance) | |
Fuel system status | Closed loop | |
Auxiliary battery voltage | 11 V or higher | |
Either of the following conditions is met |
1 or 2 | | 1. Engine speed |
Less than 1100 rpm | | 2. Engine load |
10% or higher | | Catalyst monitor |
Not executed | TYPICAL MALFUNCTION THRESHOLDS P0171 and P0172: Fuel-Trim Lean/Rich |
EVAP purge-cut | Executing | | Either of the following conditions is met |
1 or 2 | | 1. Average between short-term fuel trim and long-term fuel trim |
35% or higher (varies with engine coolant temperature) | |
2. Average between short-term fuel trim and long-term fuel trim |
-35% or less (varies with engine coolant temperature) | P1170: Fuel Trim (Port Injection Fail) |
DTCs of fuel system have already been set | - | |
EVAP purge-cut | Executing | |
Direct injection | 100% | |
Both of the following conditions are met |
1 and 2 | | 1. Average between short-term fuel trim and long-term fuel trim |
Less than 35% (varies with engine coolant temperature) | |
2. Average between short-term fuel trim and long-term fuel trim |
Higher than -35% (varies with engine coolant temperature) | P117B: Fuel Trim (Direct Injection Fail) |
DTCs of fuel system have already been set | - | |
EVAP purge-cut | Executing | |
Port injection | 100% | |
Both of the following conditions are met |
1 and 2 | | 1. Average between short-term fuel trim and long-term fuel trim |
Less than 35% (varies with engine coolant temperature) | |
2. Average between short-term fuel trim and long-term fuel trim |
Higher than -35% (varies with engine coolant temperature) | CONFIRMATION DRIVING PATTERN
HINT:
- When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" procedure.
Click here 
- Permanent misfire and fuel system DTCs can only be cleared when
performing the universal trip driving pattern when no malfunction is
detected.
- Connect the Techstream to the DLC3.
- Turn the power switch on (IG).
- Turn the Techstream on.
- Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
- Turn the power switch off and wait for at least 30 seconds.
- Turn the power switch on (IG) [A].
- Turn the Techstream on.
- Put the engine in Inspection Mode (Maintenance Mode).
Click here
- Start the engine and warm it up until the engine coolant temperature
75°C (167°F) or higher with all the accessories switched off [B].
- With the engine warmed up, idle the engine for 5 minutes or more [C].
- With the engine running, drive the vehicle at a speed between 60 and 100 km/h (37 and 62 mph) for 5 minutes or more [D].
CAUTION:
When performing the confirmation driving pattern, obey all speed limits and traffic laws.
HINT:
If the engine stops, further depress the accelerator pedal to restart the engine.
- Stop the vehicle, and idle the engine for 5 minutes or more [E].
- Enter the following menus: Powertrain / Engine / Trouble Codes [F].
- Read the pending DTCs.
HINT:
If a pending DTC is output, the system is malfunctioning.
WIRING DIAGRAM
- Refer to DTC P003012 for the air fuel ratio sensor (sensor 1) circuit.
Click here
- Refer to DTC P010012 for the mass air flow meter sub-assembly circuit.
Click here
CAUTION / NOTICE / HINT
NOTICE:
HINT:
- Sensor 1 refers to the sensor closest to the engine assembly.
- Sensor 2 refers to the sensor farthest away from the engine assembly.
- A low air fuel ratio sensor (sensor 1) current could be caused by a rich
air fuel mixture. Check for conditions that would cause the engine to
run rich.
- A high air fuel ratio sensor (sensor 1) current could be caused by a
lean air fuel mixture. Check for conditions that would cause the engine
to run lean.
- Read Freeze Frame Data using the Techstream. The ECM records vehicle and
driving condition information as Freeze Frame Data the moment a DTC is
stored. When troubleshooting, Freeze Frame Data can help determine if
the vehicle was moving or stationary, if the engine was warmed up or
not, if the air fuel ratio was lean or rich, and other data from the
time the malfunction occurred.
PROCEDURE |
1. | CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P017100, P017200, P117000 AND/OR P117B00) |
(a) Connect the Techstream to the DLC3. (b) Turn the power switch on (IG).
(c) Turn the Techstream on. (d) Enter the following menus: Powertrain / Engine / Trouble Codes.
(e) Read the DTCs. Powertrain > Engine > Trouble Codes
|
Result | Proceed to | |
DTC P017100, P017200, P117000 and/or P117B00 is output |
A | | DTC P017100, P017200, P117000 and/or P117B00 and other DTCs are output |
B | HINT: If any DTCs other than P017100, P017200, P117000 and/or P117B00 are output, troubleshoot those DTCs first.
| B |
 | GO TO DTC CHART |
|
A |
 | |
| 2. |
PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE INJECTION MODE) |
(a) Connect the Techstream to the DLC3. (b) Turn the power switch on (IG).
(c) Turn the Techstream on. (d) Put the engine in Inspection Mode (Maintenance Mode). Powertrain > Hybrid Control > Utility
|
Tester Display | | Inspection Mode |
(e)
Start the engine and warm it up until the engine coolant temperature is
75°C (167°F) or higher with all the accessories switched off. (f)
Enter the following menus: Powertrain / Engine / Active Test / Control
the Injection Mode / Data List / Coolant Temperature, Injection Mode,
Short FT B1S1 and Long FT B1S1. Powertrain > Engine > Active Test
|
Active Test Display | |
Control the Injection Mode |
|
Data List Display | |
Coolant Temperature | |
Injection Mode | |
Short FT B1S1 | |
Long FT B1S1 | (g)
According to the display on the Techstream, read the Data List with the
Active Test "Control the Injection Mode" set to Port. OK: |
Techstream Display | Specified Condition | |
Total of Short FT B1S1 and Long FT B1S1 |
Between -20 and 20% | (h)
According to the display on the Techstream, read the Data List with the
Active Test "Control the Injection Mode" set to Direct. OK: |
Techstream Display | Specified Condition | |
Total of Short FT B1S1 and Long FT B1S1 |
Between -20 and 20% |
|
Item | Proceed to | |
Port | Direct | |
OK | OK |
A | | OK |
NG | B | |
NG | OK |
C | | NG |
NG | D |
| B |
| GO TO STEP 4 |
| C |
| GO TO STEP 11 |
| D |
| GO TO STEP 12 |
|
A | |
| |
| 3. |
CHECK IF VEHICLE HAS RUN OUT OF FUEL IN PAST |
(a) Has the vehicle run out of fuel in the past?
| YES |
| DTC CAUSED BY RUNNING OUT OF FUEL |
| NO |
| CHECK FOR INTERMITTENT PROBLEMS |
| 4. |
READ VALUE USING TECHSTREAM (FUEL PRESSURE (HIGH)) |
(a) Connect the Techstream to the DLC3. (b) Turn the power switch on (IG).
(c) Turn the Techstream on. (d) Put the engine in Inspection Mode (Maintenance Mode). Powertrain > Hybrid Control > Utility
|
Tester Display | | Inspection Mode |
(e)
Start the engine and warm it up until the engine coolant temperature is
75°C (167°F) or higher with all the accessories switched off. (f)
Enter the following menus: Powertrain / Engine / Data List / Engine
Speed, Coolant Temperature, Fuel Pressure (High) and Injection Mode. Powertrain > Engine > Data List
|
Tester Display | | Engine Speed | |
Coolant Temperature | |
Fuel Pressure (High) | |
Injection Mode | (g) According to the display on the Techstream, read the Data List.
HINT: During
charge control, the engine speed is set at idle. Therefore, the engine
speed will not increase when the accelerator pedal is depressed. In this
case, read the Data List after charge control has completed. Standard: |
Techstream Display | Condition |
Specified Condition | |
Fuel Pressure (High) |
- Shift position: P
- A/C: Off
- Engine warmed up
- Engine Speed: 2500 rpm
- Injection Mode: Direct
| 3000 to 25000 kPa |
| NG |
| GO TO STEP 7 |
|
OK | |
| |
| 5. |
PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE INJECTION MODE (DIRECT)) |
(a) Connect the Techstream to the DLC3. (b) Turn the power switch on (IG).
(c) Turn the Techstream on. (d) Put the engine in Inspection Mode (Maintenance Mode). Powertrain > Hybrid Control > Utility
|
Tester Display | | Inspection Mode |
(e)
Start the engine and warm it up until the engine coolant temperature is
75°C (167°F) or higher with all the accessories switched off. (f)
Enter the following menus: Powertrain / Engine / Active Test / Control
the Injection Mode / Data List / Coolant Temperature, High Pressure Fuel
Pump Duty Ratio (D4), Injection Mode, Short FT B1S1 and Long FT B1S1. Powertrain > Engine > Active Test
|
Active Test Display | |
Control the Injection Mode |
|
Data List Display | |
Coolant Temperature | |
High Pressure Fuel Pump Duty Ratio (D4) | |
Injection Mode | |
Short FT B1S1 | |
Long FT B1S1 | (g)
According to the display on the Techstream, read the Data List with the
Active Test "Control the Injection Mode" set to Direct. HINT: The
A/C switch and all accessory switches should be off, and the shift
lever should be in the P position, and the engine should be fully warmed
up. |
Item | Proceed to | |
Injection Mode | High Pressure Fuel Pump Duty Ratio (D4) |
Total of Short FT B1S1 and Long FT B1S1 | |
Direct | 10 to 50% |
- | A | |
50% or higher | -20% or less |
B | | 10% or less |
+20% or higher | |
50% or higher | +20% or higher |
C | | 10% or less |
-20% or less | D |
HINT: Perform "Inspection After Repair" after replacing the fuel pressure sensor (for high pressure side).
Click here
| B |
| REPLACE FUEL PRESSURE SENSOR (FOR HIGH PRESSURE SIDE) |
| C |
| GO TO STEP 8 |
| D |
| REPLACE ECM |
|
A | |
| |
| 6. |
PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE INJECTION MODE (DIRECT)) |
(a) Connect the Techstream to the DLC3. (b) Turn the power switch on (IG).
(c) Turn the Techstream on. (d) Put the engine in Inspection Mode (Maintenance Mode). Powertrain > Hybrid Control > Utility
|
Tester Display | | Inspection Mode |
(e)
Start the engine and warm it up until the engine coolant temperature is
75°C (167°F) or higher with all the accessories switched off. (f)
Enter the following menus: Powertrain / Engine / Active Test / Control
the Injection Mode / Data List / Coolant Temperature, High Pressure Fuel
Pump Duty Ratio (D4), Injection Mode, Short FT B1S1 and Long FT B1S1. Powertrain > Engine > Active Test
|
Active Test Display | |
Control the Injection Mode |
|
Data List Display | |
Coolant Temperature | |
High Pressure Fuel Pump Duty Ratio (D4) | |
Injection Mode | |
Short FT B1S1 | |
Long FT B1S1 | (g)
According to the display on the Techstream, read the Data List with the
Active Test "Control the Injection Mode" set to Direct. HINT: The
A/C switch and all accessory switches should be off, and the shift
lever should be in the P position, and the engine should be fully warmed
up. |
Item | Proceed to | |
Injection Mode | High Pressure Fuel Pump Duty Ratio (D4) |
Total of Short FT B1S1 and Long FT B1S1 | |
Direct | 10 to 50% |
-25% or less |
A | | 10 to 50% |
+25% or higher | |
10 to 50% | -25 to +25% |
B | HINT: Perform "Inspection After Repair" after replacing the direct fuel injector assembly.
Click here
| A |
| REPLACE DIRECT FUEL INJECTOR ASSEMBLY |
| B |
| CHECK FOR INTERMITTENT PROBLEMS |
| 7. |
CHECK MISFIRE COUNT OF DIRECT INJECTION |
(a) Connect the Techstream to the DLC3. (b) Turn the power switch on (IG).
(c) Turn the Techstream on. (d) Put the engine in Inspection Mode (Maintenance Mode). Powertrain > Hybrid Control > Utility
|
Tester Display | | Inspection Mode |
(e)
Start the engine and warm it up until the engine coolant temperature is
75°C (167°F) or higher with all the accessories switched off. (f)
Enter the following menus: Powertrain / Engine / Active Test / Control
the Injection Mode / Data List / Coolant Temperature, Injection Mode and
Misfire Count Cylinder #1 to Misfire Count Cylinder #4. Powertrain > Engine > Active Test
|
Active Test Display | |
Control the Injection Mode |
|
Data List Display | |
Coolant Temperature | |
Injection Mode | |
Misfire Count Cylinder #1 | |
Misfire Count Cylinder #2 | |
Misfire Count Cylinder #3 | |
Misfire Count Cylinder #4 | (g)
According to the display on the Techstream, read the Data List with the
Active Test "Control the Injection Mode" set to Direct. HINT: The
A/C switch and all accessory switches should be off, and the shift
lever should be in the P position, and the engine should be fully warmed
up. |
Injection Mode | Misfire Count |
Proceed to | |
Direct | No misfire counts, or misfire counts occur randomly in all cylinders |
A | | Misfire counts occur in particular cylinder |
B | HINT: Perform "Inspection After Repair" after replacing the direct fuel injector assembly.
Click here
| B |
| REPLACE DIRECT FUEL INJECTOR ASSEMBLY |
|
A | |
| |
| 8. |
REPLACE FUEL PUMP ASSEMBLY (FOR HIGH PRESSURE SIDE) |
(a) Replace the fuel pump assembly (for high pressure side). Click here
HINT: Perform "Inspection After Repair" after replacing the fuel pump assembly (for high pressure side).
Click here
|
NEXT | |
| |
(a) Connect the Techstream to the DLC3.
(b) Turn the power switch on (IG). (c) Turn the Techstream on. (d) Clear the DTCs. Powertrain > Engine > Clear DTCs
(e) Turn the power switch off and wait for at least 30 seconds.
|
NEXT | |
| |
| 10. |
CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED |
(a) Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern.
(b) Enter the following menus: Powertrain / Engine / Trouble Codes. (c) Read the DTCs. Powertrain > Engine > Trouble Codes
|
Result | Proceed to | |
DTCs are not output | A | |
DTC P017100, P017200, P117000 and/or P117B00 is output |
B |
| A |
| END |
| B |
| REPLACE ECM |
| 11. |
INSPECT PORT FUEL INJECTOR ASSEMBLY | (a) Check the injection volume (whether fuel volume is high or low, and whether injection pattern is poor).
Click here HINT: Perform "Inspection After Repair" after replacing the port fuel injector assembly.
Click here
| OK |
| REPLACE ECM |
| NG |
| REPLACE PORT FUEL INJECTOR ASSEMBLY |
| 12. |
CHECK PCV VALVE AND HOSE CONNECTIONS |
 (a) Check the PCV hose connections.
(b) Check the PCV valve. Click here
OK: PCV hose and PCV valve are connected correctly and are not damaged.
| NG |
| REPAIR OR REPLACE PCV VALVE OR HOSE |
|
OK | |
| |
(a) Check the intake system for vacuum leaks.
Click here OK: No leaks in intake system.
HINT: Perform "Inspection After Repair" after repairing or replacing the intake system.
Click here
| NG |
| REPAIR OR REPLACE INTAKE SYSTEM |
|
OK | |
| |
| 14. |
PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE INJECTION VOLUME FOR A/F SENSOR) |
(a) Connect the Techstream to the DLC3. (b) Turn the power switch on (IG).
(c) Turn the Techstream on. (d) Put the engine in Inspection Mode (Maintenance Mode). Powertrain > Hybrid Control > Utility
|
Tester Display | | Inspection Mode |
(e) Start the engine and warm it up until the engine coolant temperature reaches 75°C (167°F) or higher.
(f) Idle the engine for 5 minutes or more with the shift lever in P. (g)
Enter the following menus: Powertrain / Engine / Active Test / Control
the Injection Volume for A/F Sensor / Data List / Coolant Temperature,
A/F (O2) Sensor Current B1S1 and A/F (O2) Sensor Current B1S2. Powertrain > Engine > Active Test
|
Active Test Display | |
Control the Injection Volume for A/F Sensor |
|
Data List Display | |
Coolant Temperature | |
A/F (O2) Sensor Current B1S1 | |
A/F (O2) Sensor Current B1S2 | (h) Perform the Control the Injection Volume for A/F Sensor operation with the engine idling.
(i)
Monitor the output values of the air fuel ratio sensor (sensor 1) and
air fuel ratio sensor (sensor 2) (A/F (O2) Sensor Current B1S1 and A/F
(O2) Sensor Current B1S2) displayed on the Techstream.
HINT:
- The Control the Injection Volume for A/F Sensor operation lowers the
fuel injection volume by 12.5% or increases the injection volume by
12.5%.
- The air fuel ratio sensor (sensor 1) has an output delay of a few
seconds and the air fuel ratio sensor (sensor 2) has a maximum output
delay of approximately 20 seconds.
- If the sensor output value does not change (almost no reaction) while
performing the Active Test, the sensor may be malfunctioning.
Standard: |
Techstream Display (Sensor) |
Injection Volume | Status |
Voltage | |
A/F (O2) Sensor Current B1S1 (Air fuel ratio (sensor 1)) |
12.5% | Rich |
Below -0.075 mA | |
-12.5% | Lean |
More than 0.037 mA | |
A/F (O2) Sensor Current B1S2 (Air fuel ratio (sensor 2)) |
12.5% | Rich |
Below -0.86 mA | |
-12.5% | Lean |
More than 0.33 mA |
|
Status A/F (O2) Sensor Current B1S1 |
Status A/F (O2) Sensor Current B1S2 |
Air Fuel Ratio Condition and Air Fuel Ratio Sensor Condition |
Suspected Trouble Area | Proceed to | |
Lean/Rich | Lean/Rich |
Normal | - |
A | | Lean |
Lean | Actual air fuel ratio lean |
- PCV valve and hose
- PCV hose connections
- Gas leak from exhaust system
- Intake system
- Fuel pressure
- Mass air flow meter sub-assembly
- Engine coolant temperature sensor
- EGR valve assembly
| | Rich |
Rich | Actual air fuel ratio rich |
- Gas leak from exhaust system
- Ignition system
- Fuel pressure
- Mass air flow meter sub-assembly
- Engine coolant temperature sensor
- EGR valve assembly
| | Lean |
Lean/Rich | Air fuel ratio sensor (sensor 1) malfunction |
- Air fuel ratio sensor (sensor 1)
| B | |
Rich | Lean/Rich |
Air fuel ratio sensor (sensor 1) malfunction |
- Air fuel ratio sensor (sensor 1)
|
- Lean: During the Control the Injection Volume for A/F Sensor Active
Test, the air fuel ratio sensor (sensor 1) output current (A/F (O2)
Sensor Current B1S1) is consistently more than 0.037 mA, and the air
fuel ratio sensor (sensor 2) output current (A/F (O2) Sensor Current
B1S2) is consistently more than 0.33 mA.
- Rich: During the Control the Injection Volume for A/F Sensor Active
Test, the air fuel ratio sensor (sensor 1) output current (A/F (O2)
Sensor Current B1S1) is consistently below -0.075 mA, and the air fuel
ratio sensor (sensor 2) output current (A/F (O2) Sensor Current B1S2) is
consistently below -0.86 mA.
- Lean/Rich: During the Control the Injection Volume for A/F Sensor Active
Test, the output current of the air fuel ratio sensor (sensor 1) or air
fuel ratio sensor (sensor 2) alternate correctly.
HINT: Refer to "Data List / Active Test" [A/F (O2) Sensor Current B1S1 and A/F (O2) Sensor Current B1S2].
Click here
| B |
| GO TO STEP 24 |
|
A | |
| |
| 15. |
READ VALUE USING TECHSTREAM (COOLANT TEMPERATURE) |
(a) Connect the Techstream to the DLC3. (b) Turn the power switch on (IG).
(c) Turn the Techstream on. (d) Enter the following menus: Powertrain / Engine / Data List / Coolant Temperature. Powertrain > Engine > Data List
|
Tester Display | | Coolant Temperature |
(e) Read the Data List twice, when the engine is both cold and warmed up.
Standard: |
Techstream Display | Condition |
Specified Condition | |
Coolant Temperature | Cold engine |
Same as ambient air temperature | |
Warm engine | Between 75 and 100°C (167 and 212°F) |
HINT: Perform "Inspection After Repair" after replacing the engine coolant temperature sensor.
Click here
| NG |
| REPLACE ENGINE COOLANT TEMPERATURE SENSOR |
|
OK | |
| |
| 16. |
PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE EGR STEP POSITION) |
(a) Connect the Techstream to the DLC3. (b) Turn the power switch on (IG).
(c) Turn the Techstream on. (d) Put the engine in Inspection Mode (Maintenance Mode). Powertrain > Hybrid Control > Utility
|
Tester Display | | Inspection Mode |
(e) Start the engine and warm it up until the engine coolant temperature reaches 75°C (167°F) or higher.
HINT: The A/C switch and all accessories should be off. (f)
Enter the following menus: Powertrain / Engine / Active Test / Control
the EGR Step Position / Data List / Intake Manifold Absolute Pressure,
Coolant Temperature and Engine Independent. Powertrain > Engine > Active Test
|
Active Test Display | |
Control the EGR Step Position |
|
Data List Display | |
Intake Manifold Absolute Pressure | |
Coolant Temperature | |
Engine Independent | (g)
Confirm that the value of Data List item Engine Independent is
"Operate" then check the value of Intake Manifold Absolute Pressure
while performing the Active Test.
NOTICE:
- Do not leave the EGR valve open for 10 seconds or more during the Active Test.
- Be sure to return the EGR valve to step 0 when the Active Test is completed.
- Do not open the EGR valve 30 steps or more during the Active Test.
OK: The value of
Intake Manifold Absolute Pressure changes in response to the EGR step
position when the value of Engine Independent is "Operate". Standard: |
- | Control the EGR Step Position (Active Test) | |
0 Steps | 0 to 30 Steps | |
Intake Manifold Absolute Pressure (Data List) |
(EGR valve is fully closed) |
Intake Manifold Absolute Pressure value is at least +10 kPa (1.45 psi) higher than when EGR valve is fully closed |
HINT:
- If the value of Data List item Engine Independent is "Not Opr" when the
engine is idling, charge control is being performed. Perform the Active
Test after charge control is complete ("Operate" is displayed).
- While performing the Active Test, if the increase in the value of Intake
Manifold Absolute Pressure is small, the EGR valve assembly may be
malfunctioning.
- Even if the EGR valve assembly is malfunctioning, rough idling or an
increase in the value of Intake Manifold Absolute Pressure may occur
while performing the Active Test. However, the amount that the value of
Intake Manifold Absolute Pressure increases will be smaller than normal.
| OK |
| GO TO STEP 18 |
|
NG | |
| |
| 17. |
INSPECT EGR VALVE ASSEMBLY | (a) Remove the EGR valve assembly.
Click here (b) Check if the EGR valve is stuck open.
OK: EGR valve is tightly closed. HINT: Perform "Inspection After Repair" after replacing the EGR valve assembly.
Click here
| NG |
| REPLACE EGR VALVE ASSEMBLY |
|
OK | |
| |
| 18. |
READ VALUE USING TECHSTREAM (MASS AIR FLOW SENSOR) |
(a) Connect the Techstream to the DLC3. (b) Turn the power switch on (IG).
(c) Turn the Techstream on. (d) Put the engine in Inspection Mode (Maintenance Mode). Powertrain > Hybrid Control > Utility
|
Tester Display | | Inspection Mode |
(e)
Start the engine and warm it up until the engine coolant temperature is
75°C (167°F) or higher with all the accessories switched off. (f) Enter the following menus: Powertrain / Engine / Data List / Engine Speed, Mass Air Flow Sensor and Coolant Temperature. Powertrain > Engine > Data List
|
Tester Display | | Engine Speed | |
Mass Air Flow Sensor | |
Coolant Temperature | (g) Read Mass Air Flow Sensor while maintaining an engine speed of 2500 rpm.
HINT: During
charge control, the engine speed is set at idle. Therefore, the engine
speed will not increase when the accelerator pedal is depressed. In this
case, read the Data List after charge control has completed. Standard: |
Techstream Display | Condition |
Specified Condition | |
Mass Air Flow Sensor |
- Engine warmed up
- Shift position: P
- A/C: Off
- Engine Speed: 2500 rpm
| Between 6.2 and 18.6 gm/sec |
| NG |
| GO TO STEP 31 |
|
OK | |
| |
| 19. |
CHECK FUEL PRESSURE (FOR LOW PRESSURE SIDE) |
(a) Check the fuel pressure (for low pressure side). Click here
| NG | |
GO TO STEP 23 |
|
OK | |
| |
| 20. |
CHECK FOR EXHAUST GAS LEAK | (a) Check for exhaust gas leaks.
OK: No gas leaks. HINT: Perform "Inspection After Repair" after repairing or replacing the exhaust system.
Click here
| NG |
| REPAIR OR REPLACE EXHAUST SYSTEM |
|
OK | |
| |
(a) Inspect the spark plug.
Click here HINT: Perform "Inspection After Repair" after replacing the spark plug.
Click here
| NG |
| REPLACE SPARK PLUG |
|
OK | |
| |
| 22. |
CHECK FOR SPARK (SPARK TEST) | (a) Perform a spark test.
Click here
HINT:
- If the result of the spark test is normal, proceed to the next step.
- Perform "Inspection After Repair" after replacing the spark plug or ignition coil assembly.
Click here
| NEXT |
| GO TO STEP 31 |
(a) Check the fuel lines for leaks or blockage.
HINT: Perform "Inspection After Repair" after replacing the fuel pump (for low pressure side).
Click here
| OK |
| REPLACE FUEL PUMP (FOR LOW PRESSURE SIDE) |
| NG |
| REPAIR OR REPLACE FUEL SYSTEM |
| 24. |
INSPECT AIR FUEL RATIO SENSOR (SENSOR 1) (HEATER RESISTANCE) |
(a) Inspect the air fuel ratio sensor (sensor 1). Click here
HINT: Perform "Inspection After Repair" after replacing the air fuel ratio sensor (sensor 1).
Click here
| NG |
| REPLACE AIR FUEL RATIO SENSOR (SENSOR 1) |
|
OK | |
| |
| 25. |
CHECK TERMINAL VOLTAGE (POWER SOURCE OF AIR FUEL RATIO SENSOR (SENSOR 1)) |
|
*a | Front view of wire harness connector
(to Air Fuel Ratio Sensor (Sensor 1)) |
(a) Disconnect the air fuel ratio sensor (sensor 1) connector. (b) Turn the power switch on (IG).
(c) Measure the voltage according to the value(s) in the table below. Standard Voltage: |
Tester Connection | Condition |
Specified Condition | |
C46-2 (+B) - Body ground |
Power switch on (IG) |
11 to 14 V |
| NG |
| GO TO STEP 34 |
|
OK | |
| |
| 26. |
CHECK HARNESS AND CONNECTOR (AIR FUEL RATIO SENSOR (SENSOR 1) - ECM) |
(a) Disconnect the air fuel ratio sensor (sensor 1) connector. (b) Disconnect the ECM connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance: |
Tester Connection | Condition |
Specified Condition | |
C46-1 (HA1A) - C55-9 (HA1A) |
Always | Below 1 Ω | |
C46-3 (A1A+) - C55-95 (A1A+) |
Always | Below 1 Ω | |
C46-4 (A1A-) - C55-94 (A1A-) |
Always | Below 1 Ω | |
C46-1 (HA1A) or C55-9 (HA1A) - Body ground and other terminals |
Always | 10 kΩ or higher | |
C46-3 (A1A+) or C55-95 (A1A+) - Body ground and other terminals |
Always | 10 kΩ or higher | |
C46-4 (A1A-) or C55-94 (A1A-) - Body ground and other terminals |
Always | 10 kΩ or higher |
| NG |
| REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
OK | |
| |
| 27. |
REPLACE AIR FUEL RATIO SENSOR (SENSOR 1) |
(a) Replace the air fuel ratio sensor (sensor 1). Click here
HINT: Perform "Inspection After Repair" after replacing the air fuel ratio sensor (sensor 1).
Click here
|
NEXT | |
| |
(a) Connect the Techstream to the DLC3.
(b) Turn the power switch on (IG). (c) Turn the Techstream on. (d) Clear the DTCs. Powertrain > Engine > Clear DTCs
(e) Turn the power switch off and wait for at least 30 seconds.
|
NEXT | |
| |
| 29. |
CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED |
(a) Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern.
(b) Enter the following menus: Powertrain / Engine / Trouble Codes. (c) Read the DTCs. Powertrain > Engine > Trouble Codes
|
Result | Proceed to | |
DTCs are not output | A | |
DTC P017100, P017200, P117000 and/or P117B00 is output |
B |
| A |
| END |
|
B | |
| |
| 30. |
READ VALUE USING TECHSTREAM (MASS AIR FLOW SENSOR) |
(a) Connect the Techstream to the DLC3. (b) Turn the power switch on (IG).
(c) Turn the Techstream on. (d) Put the engine in Inspection Mode (Maintenance Mode). Powertrain > Hybrid Control > Utility
|
Tester Display | | Inspection Mode |
(e)
Start the engine and warm it up until the engine coolant temperature is
75°C (167°F) or higher with all the accessories switched off. (f) Enter the following menus: Powertrain / Engine / Data List / Engine Speed, Mass Air Flow Sensor and Coolant Temperature. Powertrain > Engine > Data List
|
Tester Display | | Engine Speed | |
Mass Air Flow Sensor | |
Coolant Temperature | (g) Read Mass Air Flow Sensor while maintaining an engine speed of 2500 rpm.
HINT: During
charge control, the engine speed is set at idle. Therefore, the engine
speed will not increase when the accelerator pedal is depressed. In this
case, read the Data List after charge control has completed. Standard: |
Techstream Display | Condition |
Specified Condition | |
Mass Air Flow Sensor |
- Engine warmed up
- Shift position: P
- A/C: Off
- Engine Speed: 2500 rpm
| Between 6.2 and 18.6 gm/sec |
|
NEXT | |
| |
| 31. |
CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER SUB-ASSEMBLY CONNECTOR CONNECTION) |
(a)
Check the connection and terminal contact pressure of connectors and
wire harnesses between the mass air flow meter sub-assembly and ECM. Click here
HINT: Repair any problems.
|
NEXT | |
| |
(a) Connect the Techstream to the DLC3.
(b) Turn the power switch on (IG). (c) Turn the Techstream on. (d) Clear the DTCs. Powertrain > Engine > Clear DTCs
(e) Turn the power switch off and wait for at least 30 seconds.
|
NEXT | |
| |
| 33. |
CHECK WHETHER DTC OUTPUT RECURS (DTC P017100, P017200, P117000 OR P117B00) |
(a) Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern.
(b) Enter the following menus: Powertrain / Engine / Trouble Codes. (c) Read the DTCs. Powertrain > Engine > Trouble Codes
|
Result | Proceed to | |
DTCs are not output | A | |
DTC P017100, P017200, P117000 and/or P117B00 is output |
B |
| A |
| END |
| B |
| GO TO STEP 38 |
| 34. |
INSPECT EFI-MAIN NO. 2 RELAY | (a) Inspect the EFI-MAIN NO. 2 relay.
Click here
| NG |
| REPLACE EFI-MAIN NO. 2 RELAY |
|
OK | |
| |
| 35. |
CHECK TERMINAL VOLTAGE (POWER SOURCE OF EFI-MAIN NO. 2 RELAY) |
|
*1 | No. 1 Engine Room Relay Block and No. 1 Junction Block Assembly | |
*2 | EFI-MAIN NO. 2 Relay |
(a) Remove the EFI-MAIN NO. 2 relay from the No. 1 engine room relay block and No. 1 junction block assembly.
(b) Measure the voltage according to the value(s) in the table below. Standard Voltage: |
Tester Connection | Condition |
Specified Condition | |
3 (EFI-MAIN NO. 2 relay) - Body ground |
Always | 11 to 14 V |
| NG |
| REPAIR OR REPLACE HARNESS OR CONNECTOR (AUXILIARY BATTERY - EFI-MAIN NO. 2 RELAY) |
|
OK | |
| |
| 36. |
CHECK HARNESS AND CONNECTOR (EFI-MAIN NO. 2 RELAY - BODY GROUND) |
(a) Remove the EFI-MAIN NO. 2 relay from the No. 1 engine room relay block and No. 1 junction block assembly.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance: |
Tester Connection | Condition |
Specified Condition | |
1 (EFI-MAIN NO. 2 relay) - Body ground |
Always | Below 1 Ω |
| NG |
| REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
OK | |
| |
| 37. |
CHECK HARNESS AND CONNECTOR (EFI-MAIN NO. 2 RELAY - AIR FUEL RATIO SENSOR (SENSOR 1)) |
(a) Remove the EFI-MAIN NO. 2 relay from the No. 1 engine room relay block and No. 1 junction block assembly.
(b) Disconnect the air fuel ratio sensor (sensor 1) connector. (c) Measure the resistance according to the value(s) in the table below.
Standard Resistance: |
Tester Connection | Condition |
Specified Condition | |
5 (EFI-MAIN NO. 2 relay) - C46-2 (+B) |
Always | Below 1 Ω | |
5 (EFI-MAIN NO. 2 relay) or C46-2 (+B) - Body ground and other terminals |
Always | 10 kΩ or higher |
| OK |
| REPAIR OR REPLACE HARNESS OR CONNECTOR (EFI-MAIN NO. 1 RELAY - EFI-MAIN NO. 2 RELAY) |
| NG |
| REPAIR OR REPLACE HARNESS OR CONNECTOR |
| 38. |
CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER SUB-ASSEMBLY - ECM) |
(a) Disconnect the mass air flow meter sub-assembly connector. (b) Disconnect the ECM connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance: |
Tester Connection | Condition |
Specified Condition | |
C28-3 (5V) - C55-78 (VCVG) |
Always | Below 1 Ω | |
C28-1 (FG) - C55-101 (VG) |
Always | Below 1 Ω | |
C28-2 (E2G) - C55-79 (E2G) |
Always | Below 1 Ω | |
C28-3 (5V) or C55-78 (VCVG) - Body ground and other terminals |
Always | 10 kΩ or higher | |
C28-1 (FG) or C55-101 (VG) - Body ground and other terminals |
Always | 10 kΩ or higher | |
C28-2 (E2G) or C55-79 (E2G) - Body ground and other terminals |
Always | 10 kΩ or higher |
| NG |
| REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
OK | |
| |
| 39. |
REPLACE MASS AIR FLOW METER SUB-ASSEMBLY |
(a) Replace the mass air flow meter sub-assembly. Click here
HINT:
- If the result of the inspection performed in steps 18 and 30 (READ VALUE
USING TECHSTREAM (MASS AIR FLOW SENSOR)) indicated no problem, proceed
to the next step without replacing the mass air flow meter sub-assembly.
- Perform "Inspection After Repair" after replacing the mass air flow meter sub-assembly.
Click here
|
NEXT | |
| |
(a) Connect the Techstream to the DLC3.
(b) Turn the power switch on (IG). (c) Turn the Techstream on. (d) Clear the DTCs. Powertrain > Engine > Clear DTCs
(e) Turn the power switch off and wait for at least 30 seconds.
|
NEXT | |
| |
| 41. |
CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED |
(a) Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern.
(b) Enter the following menus: Powertrain / Engine / Trouble Codes. (c) Read the DTCs. Powertrain > Engine > Trouble Codes
|
Result | Proceed to | |
DTCs are not output | A | |
DTC P017100, P017200, P117000 and/or P117B00 is output |
B |
| A |
| END |
| B |
| REPLACE ECM | | 
