DESCRIPTION The D-4S system
has two injection systems. One is an in-cylinder direct injection
system that directly injects pressurized fuel into the combustion
chamber. The other is an intake port injection system. The ECM
determines the percentage of direct injection and port injection
necessary in accordance with the engine speed and load. |
DTC No. | Detection Item |
DTC Detection Condition | Trouble Area |
MIL | Memory |
Note | | P21CF13 |
Cylinder 1 Injector "B" Circuit Open |
Current is not applied to the injector 10 times or more with the engine running (1 trip detection logic). |
- Open or short in fuel injector assembly (for port injection) circuit
- Fuel injector assembly (for port injection)
- ECM
| Comes on |
DTC stored | SAE Code: P21CF | |
P21D013 | Cylinder 2 Injector "B" Circuit Open |
Current is not applied to the injector 10 times or more with the engine running (1 trip detection logic). |
- Open or short in fuel injector assembly (for port injection) circuit
- Fuel injector assembly (for port injection)
- ECM
| Comes on |
DTC stored | SAE Code: P21D0 | |
P21D113 | Cylinder 3 Injector "B" Circuit Open |
Current is not applied to the injector 10 times or more with the engine running (1 trip detection logic). |
- Open or short in fuel injector assembly (for port injection) circuit
- Fuel injector assembly (for port injection)
- ECM
| Comes on |
DTC stored | SAE Code: P21D1 | |
P21D213 | Cylinder 4 Injector "B" Circuit Open |
Current is not applied to the injector 10 times or more with the engine running (1 trip detection logic). |
- Open or short in fuel injector assembly (for port injection) circuit
- Fuel injector assembly (for port injection)
- ECM
| Comes on |
DTC stored | SAE Code: P21D2 | |
P21D313 | Cylinder 5 Injector "B" Circuit Open |
Current is not applied to the injector 10 times or more with the engine running (1 trip detection logic). |
- Open or short in fuel injector assembly (for port injection) circuit
- Fuel injector assembly (for port injection)
- ECM
| Comes on |
DTC stored | SAE Code: P21D3 | |
P21D413 | Cylinder 6 Injector "B" Circuit Open |
Current is not applied to the injector 10 times or more with the engine running (1 trip detection logic). |
- Open or short in fuel injector assembly (for port injection) circuit
- Fuel injector assembly (for port injection)
- ECM
| Comes on |
DTC stored | SAE Code: P21D4 | MONITOR DESCRIPTION
The
ECM monitors the injection control of the fuel injector assemblies (for
port injection). If a malfunction is detected in a fuel injector
assembly (for port injection) circuit, the ECM cancels the injection
control for the corresponding cylinder, illuminates the MIL and stores a
DTC. MONITOR STRATEGY |
Related DTCs | P21CF: Port injector (cylinder 1) circuit/open
P21D0: Port injector (cylinder 2) circuit/open P21D1: Port injector (cylinder 3) circuit/open
P21D2: Port injector (cylinder 4) circuit/open P21D3: Port injector (cylinder 5) circuit/open
P21D4: Port injector (cylinder 6) circuit/open | |
Required Sensors/Components (Main) | Port injector (cylinder 1 to 6) | |
Required Sensors/Components (Related) |
- | | Frequency of Operation |
Continuous | | Duration |
10 times | | MIL Operation |
Immediate | | Sequence of Operation |
None | TYPICAL ENABLING CONDITIONS |
Monitor runs whenever the following DTCs are not stored |
None | | All of the following conditions are met |
- | | Battery voltage |
8 V or higher | | Fuel cut |
Off | | Synchronous injection |
Operating | | Engine switch |
On (IG) | | Either of the following conditions is met |
Condition A or B | | A. Engine |
Running | | B. Starter |
On | | Injection time |
Higher than 0 second | TYPICAL MALFUNCTION THRESHOLDS |
Confirmed injection signal | No signal | CONFIRMATION DRIVING PATTERN
HINT:
- After repair has been completed, clear the DTC and then check that the
vehicle has returned to normal by performing the following All Readiness
check procedure.
Click here 
- When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" procedure.
Click here
- Connect the Techstream to the DLC3.
- Turn the engine switch on (IG).
- Turn the Techstream on.
- Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
- Turn the engine switch off and wait for at least 30 seconds.
- Start the engine [A].
- Idle the engine for 3 minutes or more [B].
- Turn the Techstream on.
- Enter the following menus: Powertrain / Engine / Trouble Codes [C].
- Read the DTCs [B].
HINT:
- If a pending DTC is output, the system is malfunctioning.
- If a pending DTC is not output, perform the following procedure.
- Enter the following menus: Powertrain / Engine / Utility / All Readiness.
- Input the DTC: P21CF13, P21D013, P21D113, P21D213, P212313 or P212413.
- Check the DTC judgment result.
|
Techstream Display |
Description |
|
NORMAL |
- DTC judgment completed
- System normal
|
|
ABNORMAL |
- DTC judgment completed
- System abnormal
|
|
INCOMPLETE |
- DTC judgment not completed
- Perform driving pattern after confirming DTC enabling conditions
|
HINT:
WIRING DIAGRAM
 CAUTION / NOTICE / HINT
NOTICE: Inspect the fuses for circuits related to this system before performing the following procedure.
HINT: 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 DTCS OUTPUT (IN ADDITION TO DTC P21CF13, P21D013, P21D113, P21D213, P21D313 OR P21D413) |
(a) Connect the Techstream to the DLC3. (b) Turn the engine 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 | |
P21CF13, P21D013, P21D113, P21D213, P21D313 or P21D413 is output |
A | | P21CF13, P21D013, P21D113, P22D213, P21D313 and P21D413 are output |
B |
| B |
 | REPAIR OR REPLACE HARNESS OR CONNECTOR (IG2 NO. 1 RELAY - PORT FUEL INJECTOR ASSEMBLY) |
|
A |
 | |
| 2. |
CHECK TERMINAL VOLTAGE (POWER SOURCE OF FUEL INJECTOR ASSEMBLY (FOR PORT INJECTION)) |
|
*a | Front view of wire harness connector
(to Fuel Injector Assembly (for Port Injection)) | |
*b | No. 1 Cylinder or No. 6 Cylinder | |
*c | No. 3 Cylinder or No. 4 Cylinder | |
*d | No. 2 Cylinder or No. 5 Cylinder |
(a) Disconnect the fuel injector assembly (for port injection) connector.
(b) Turn the engine switch on (IG). (c) Measure the voltage according to the value(s) in the table below
Standard Voltage: |
Tester Connection | Condition |
Specified Condition | |
D7-1 (#7) - Body ground |
Engine switch on (IG) |
11 to 14 V | |
D12-1 (#7) - Body ground |
Engine switch on (IG) |
11 to 14 V | |
D9-1 (#9) - Body ground |
Engine switch on (IG) |
11 to 14 V | |
D10-1 (#9) - Body ground |
Engine switch on (IG) |
11 to 14 V | |
D11-1 (#11) - Body ground |
Engine switch on (IG) |
11 to 14 V | |
D8-1 (#11) - Body ground |
Engine switch on (IG) |
11 to 14 V |
| NG |
| REPAIR OR REPLACE HARNESS OR CONNECTOR (IG2 NO. 1 RELAY - FUEL INJECTOR ASSEMBLY (FOR PORT INJECTION)) |
|
OK | |
| |
| 3. |
CHECK HARNESS AND CONNECTOR (FUEL INJECTOR ASSEMBLY (FOR PORT INJECTION) - ECM) |
(a) Disconnect the ECM connector. (b) Disconnect the fuel injector assembly (for port injection) connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance: |
Tester Connection | Condition |
Specified Condition | |
D7-2 (#70) - C56-45 (#10) |
Always | Below 1 Ω | |
D12-2 (#70) - C56-40 (#60) |
Always | Below 1 Ω | |
D9-2 (#90) - C56-41 (#30) |
Always | Below 1 Ω | |
D10-2 (#90) - C56-44 (#40) |
Always | Below 1 Ω | |
D11-2 (#110) - C56-42 (#50) |
Always | Below 1 Ω | |
D8-2 (#110) - C56-43 (#20) |
Always | Below 1 Ω | |
D7-2 (#70) or C56-45 (#10) - Body ground and other terminals |
Always | 10 kΩ or higher | |
D12-2 (#70) or C56-40 (#60) - Body ground and other terminals |
Always | 10 kΩ or higher | |
D9-2 (#90) or C56-41 (#30) - Body ground and other terminals |
Always | 10 kΩ or higher | |
D10-2 (#90) or C56-44 (#40) - Body ground and other terminals |
Always | 10 kΩ or higher | |
D11-2 (#110) or C56-42 (#50) - Body ground and other terminals |
Always | 10 kΩ or higher | |
D8-2 (#110) or C56-43 (#20) - Body ground and other terminals |
Always | 10 kΩ or higher |
| NG |
| REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
OK | |
| |
| 4. |
INSPECT FUEL INJECTOR ASSEMBLY (FOR PORT INJECTION (RESISTANCE)) |
(a) Inspect the fuel injector assembly (for port injection). Click here
HINT: Perform "Inspection After Repair" after replacing the fuel injector assembly (for port injection).
Click here
| OK |
| REPLACE ECM |
| NG |
| REPLACE FUEL INJECTOR ASSEMBLY (FOR PORT INJECTION) | |
