DTC SUMMARY MALFUNCTION DESCRIPTION These
DTCs are stored when the generator temperature sensor output is
abnormal. The cause of this malfunction may be one of the following: Hybrid vehicle control ECU malfunction
- Hybrid vehicle control ECU internal malfunction
Generator temperature sensor malfunction
- Internal generator temperature sensor malfunction
- Open or short in generator temperature sensor
Wire harness between the generator temperature sensor and hybrid vehicle control ECU
- The connectors are not connected properly
- Foreign matter or water on the connector terminals
- Open or short in wire harness
HINT: If any
of these DTCs are stored, the generator temperature sensor is
malfunctioning and the self-protection function may not operate.
Therefore under certain high load driving condition, the temperature of
the generator (MG1) becomes high. If the self-protection function does
not operate, the generator (MG1) may malfunction and cause the vehicle
to enter fail-safe mode. DESCRIPTION
 The
resistance of the thermistor built into the generator temperature
sensor changes in accordance with changes in generator (MG1)
temperature. The lower the generator (MG1) temperature, the higher the
thermistor resistance. Conversely, the higher the generator (MG1)
temperature, the lower the resistance. |
DTC No. | Detection Item |
DTC Detection Condition | Trouble Area |
MIL | Warning Indicate | |
P0A3611 | Generator Temperature Sensor Circuit Short to Ground |
Short to ground in the generator temperature sensor circuit (1 trip detection logic) |
- Wire harness or connector
- Hybrid vehicle control ECU
- Generator temperature sensor (Hybrid vehicle transaxle assembly)
| Comes on |
Master Warning Light: Comes on | |
P0A3615 | Generator Temperature Sensor Circuit Short to Auxiliary Battery or Open |
Open or short to +B in the generator temperature sensor circuit
(1 trip detection logic) |
- Wire harness or connector
- Hybrid vehicle control ECU
- Generator temperature sensor (Hybrid vehicle transaxle assembly)
| Comes on |
Master Warning Light: Comes on | Related Data List |
DTC No. | Data List | |
P0A3611 | Generator Temperature | |
P0A3615 | HINT: After confirming that DTC P0A3611 or P0A3615 is output, use the Techstream to check "Generator Temperature" in the Data List. |
Displayed Temperature | Malfunction | |
-40°C (-40°F) | Open circuit or short to +B | |
215°C (419°F) | Short to ground | MONITOR DESCRIPTION
If
the hybrid vehicle control ECU detects a malfunction of the generator
temperature sensor, it will illuminate the MIL and store a DTC. MONITOR STRATEGY |
Related DTCs | P0A38 (INF P0A3611): Generator Temperature Sensor Circuit Low
P0A39 (INF P0A3615): Generator Temperature Sensor Circuit High | |
Required sensors/components | Generator temperature sensor | |
Frequency of operation | Continuous | |
Duration | TMC's intellectual property | |
MIL operation | 1 driving cycle | |
Sequence of operation | None | TYPICAL ENABLING CONDITIONS |
The monitor will run whenever the following DTCs are not present |
TMC's intellectual property | | Other conditions belong to TMC's intellectual property |
- | TYPICAL MALFUNCTION THRESHOLDS |
TMC's intellectual property |
- | COMPONENT OPERATING RANGE |
Hybrid vehicle control ECU | DTC P0A38 (INF P0A3611) is not detected
DTC P0A39 (INF P0A3615) is not detected | 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 power switch on (IG) and 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 2 minutes or more.
- Turn the power switch on (IG) and turn the Techstream on.
- With power switch on (IG) and wait for 5 seconds or more.[*1]
HINT:
[*1] : Normal judgment procedure.
The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.
- Enter the following menus: Powertrain / Hybrid Control / Utility / All Readiness.
- Check the DTC judgment result.
HINT:
- If the judgment result shows NORMAL, the system is normal.
- If the judgment result shows ABNORMAL, the system has a malfunction.
- If the judgment result shows INCOMPLETE or N/A, perform the normal judgment procedure again.
WIRING DIAGRAM
 PROCEDURE
| 1. |
CHECK CONNECTOR CONNECTION CONDITION (HYBRID VEHICLE CONTROL ECU CONNECTOR) |
Click here
|
Result | Proceed to | |
OK | A | |
NG (The connector is not connected securely.) |
B | | NG (The terminals are not making secure contact or are deformed, or water or foreign matter exists in the connector.) |
C |
| B |
 | CONNECT SECURELY |
| C |
| REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
A |
 | |
| 2. |
CHECK CONNECTOR CONNECTION CONDITION (GENERATOR TEMPERATURE SENSOR CONNECTOR) |
| (a)
Check the connection condition of the generator temperature sensor
connector and the contact pressure of each terminal. Check the terminals
for deformation, and check the connector for water ingress and foreign
matter. Click here OK: - The connector is connected securely.
- The terminals are not deformed and are connected securely. - No water or foreign matter in the connector. |
|
|
Result | Proceed to | |
OK | A | |
NG (The connector is not connected securely.) |
B | | NG (The terminals are not making secure contact or are deformed, or water or foreign matter exists in the connector.) |
C |
| B |
| CONNECT SECURELY |
| C |
| REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
A | |
| |
| 3. |
READ VALUE USING TECHSTREAM (GENERATOR TEMPERATURE) |
(a) Connect the Techstream to the DLC3. (b) Turn the power switch on (IG).
(c) Enter the following menus: Powertrain / Hybrid Control / Data List / Generator Temperature.
(d) Read the Data List. Powertrain > Hybrid Control > Data List
|
Tester Display | | Generator Temperature |
| Result |
Proceed to | | -40°C (-40°F) |
A | | 215°C (419°F) |
B | | Same as actual temperature |
C | (e) Turn the power switch off.
| B |
| GO TO STEP 6 |
| C |
| REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
A | |
| |
| 4. |
INSPECT HYBRID VEHICLE TRANSAXLE ASSEMBLY (GENERATOR TEMPERATURE SENSOR) |
| (a) Disconnect the C62 generator temperature sensor connector. |
|
| (b) Measure the resistance according to the value(s) in the table below.
Standard Resistance: |
Tester Connection | Condition |
Specified Condition | |
C62-5 (GMT) - C62-4 (GMTG) |
Power switch off |
0.3338 to 1487 kΩ | |
 |
|
*a | Component without harness connected
(Generator Temperature Sensor (Hybrid Vehicle Transaxle Assembly)) | | |
(c) Reconnect the C62 generator temperature sensor connector.
| NG |
| REPLACE HYBRID VEHICLE TRANSAXLE ASSEMBLY |
|
OK | |
| |
| 5. |
INSPECT HYBRID VEHICLE CONTROL ECU |
| (a) Connect terminals 26 (GMT) and 27 (GMTG) of the A23 hybrid vehicle control ECU connector. |
 |
|
*a | Component with harness connected
(Hybrid Vehicle Control ECU) | | |
(b) Connect the Techstream to the DLC3. (c) Turn the power switch on (IG).
(d) Enter the following menus: Powertrain / Hybrid Control / Data List / Generator Temperature.
(e) Read the Data List. Powertrain > Hybrid Control > Data List
|
Tester Display | | Generator Temperature |
OK: |
Techstream Display | Condition |
Specified Condition | |
Generator Temperature |
Terminals A23-26 (GMT) and A23-27 (GMTG) connected Power switch on (IG) |
215°C (419°F) | (f) Turn the power switch off.
| OK |
| REPAIR OR REPLACE HARNESS OR CONNECTOR |
| NG |
| REPLACE HYBRID VEHICLE CONTROL ECU |
| 6. |
INSPECT HYBRID VEHICLE TRANSAXLE ASSEMBLY (GENERATOR TEMPERATURE SENSOR) |
| (a) Disconnect the C62 generator temperature sensor connector. |
|
| (b) Measure the resistance according to the value(s) in the table below.
Standard Resistance: |
Tester Connection | Condition |
Specified Condition | |
C62-5 (GMT) - C62-4 (GMTG) |
Power switch off |
0.3338 to 1487 kΩ | | |
|
|
*a | Component without harness connected
(Generator Temperature Sensor (Hybrid Vehicle Transaxle Assembly)) | | |
(c) Reconnect the C62 generator temperature sensor connector.
| NG |
| REPLACE HYBRID VEHICLE TRANSAXLE ASSEMBLY |
|
OK | |
| |
| 7. |
CHECK HARNESS AND CONNECTOR (GENERATOR TEMPERATURE SENSOR - HYBRID VEHICLE CONTROL ECU) |
(a) Disconnect the C62 generator temperature sensor connector. (b) Disconnect the A23 hybrid vehicle control ECU connector.
| (c) Measure the resistance according to the value(s) in the table below.
Standard Resistance (Check for Open): |
Tester Connection | Condition |
Specified Condition | |
C62-5 (GMT) - A23-26 (GMT) |
Power switch off |
Below 1 Ω | |
C62-4 (GMTG) - A23-27 (GMTG) |
Power switch off |
Below 1 Ω | Standard Resistance (Check for Short): |
Tester Connection | Condition |
Specified Condition | |
C62-5 (GMT) or A23-26 (GMT) - Body ground and other terminals |
Power switch off |
10 kΩ or higher | |
C62-4 (GMTG) or A23-27 (GMTG) - Body ground and other terminals |
Power switch off |
10 kΩ or higher | |
 |
|
*a | Front view of wire harness connector
(to Generator Temperature Sensor) | |
*b | Rear view of wire harness connector
(to Hybrid Vehicle Control ECU) | | |
(d) Reconnect the A23 hybrid vehicle control ECU connector. (e) Reconnect the C62 generator temperature sensor connector.
| OK |
| REPLACE HYBRID VEHICLE CONTROL ECU |
| NG |
| REPAIR OR REPLACE HARNESS OR CONNECTOR | | 
