DTC SUMMARY MALFUNCTION DESCRIPTION These
DTCs are stored when the motor 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
Motor temperature sensor malfunction
- Internal motor temperature sensor malfunction
- Open or short in motor temperature sensor
Wire harness between the motor 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 motor temperature sensor is malfunctioning
and the self-protection function may not operate. Therefore under
certain high load driving condition, the temperature of the motor (MG2)
becomes high. If the self-protection function does not operate, the
motor (MG2) may malfunction and cause the vehicle to enter fail-safe
mode. DESCRIPTION Refer to the description for DTC P0A2A11.
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DTC No. | Detection Item |
DTC Detection Condition | Trouble Area |
MIL | Warning Indicate |
P0A2A1C | Drive Motor "A" Temperature Sensor Voltage Out of Range |
After a long soak, the value of the motor (MG2) temperature sensor is different from the value of the other temperature sensors.
(2 trip detection logic) |
Motor temperature sensor (Hybrid vehicle transaxle assembly) |
Comes on | Master Warning Light:
Comes on | P0A2A1F |
Drive Motor "A" Temperature Sensor Circuit Intermittent |
Sudden change in motor temperature sensor output or hunting: Unusual
sudden change in motor temperature sensor output occurs and offset
condition continues for a certain period of time, or unusual change in
motor temperature sensor output occurs repeatedly. (1 trip detection logic) |
Motor temperature sensor (Hybrid vehicle transaxle assembly) |
Comes on | Master Warning Light:
Comes on | Related Data List
DTC No. | Data List |
P0A2A1C |
- Generator Temperature
- Motor Temperature
- Inverter Coolant Water Temperature
| P0A2A1F |
Motor Temperature | MONITOR DESCRIPTION
If
the hybrid vehicle control ECU detects a malfunction of the motor
temperature sensor, it will illuminate the MIL and store a DTC. MONITOR STRATEGY
Related DTCs | P0A2B (INF P0A2A1C): Drive Motor "A" Temperature Sensor Circuit Range/Performance
P0A2E (INF P0A2A1F): Drive Motor "A" Temperature Sensor Circuit Intermittent |
Required sensors/components | Motor temperature sensor |
Frequency of operation | Continuous |
Duration | TMC's intellectual property |
MIL operation | 2 driving cycle / 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 P0A2B (INF P0A2A1C) is not detected
DTC P0A2E (INF P0A2A1F) 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.
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- When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" procedure.
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DTC P0A2A1C
- 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.
- Leave the vehicle as is for 5 hours or more and then check the values of
the Data List items "Generator Temperature", "Motor Temperature" and
"Inverter Coolant Water Temperature". [*1]
- Turn the power switch on (IG) and turn the Techstream on. [*2]
HINT:
[*1] to [*2]: 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.
DTC P0A2A1F
- 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.
PROCEDURE
1. | CHECK DTC OUTPUT (ENGINE) |
(a) Connect the Techstream to the DLC3. (b) Turn the power switch on (IG).
(c) Enter the following menus: Powertrain / Engine / Trouble Codes. (d) Check for DTCs. Powertrain > Engine > Trouble Codes
Result | Proceed to |
No DTCs are output, or DTCs except the ones in the table below are also output. |
A | Any of the following DTCs are also output. |
B |
Relevant DTC | P261029 |
ECM/PCM Engine Off Timer Performance Signal Invalid |
(e) Turn the power switch off.
B | |
GO TO DTC CHART (SFI SYSTEM) |
A |
| |
2. |
CHECK CONNECTOR CONNECTION CONDITION (HYBRID VEHICLE CONTROL ECU CONNECTOR) |
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OK |
| REPLACE HYBRID VEHICLE TRANSAXLE ASSEMBLY |
NG |
| CONNECT SECURELY | |