Toyota Corolla Cross: Rear Motor Shutdown Stuck Off (P1C6B9F)
DTC SUMMARY
MALFUNCTION DESCRIPTION
The hybrid vehicle control ECU detects malfunctions which prevent the rear motor (MGR) inverter shutdown circuit shutting down the hybrid vehicle control system. Detection is performed during the shutdown sequence when the ignition switch is turned off. If rear motor (MGR) inverter operation is detected after a shutdown signal was sent to the rear motor (MGR) inverter, the hybrid vehicle control ECU will determine that there is a malfunction and store this DTC.
The cause of this malfunction may be the following:
Inverter with converter assembly SDWN (MGR) internal circuit malfunction- Inverter with converter assembly malfunction
DESCRIPTION
The motor generator control ECU (MG ECU) sends shutdown signals to the inverter to cut the power supply to the generator (MG1), motor (MG2) and rear motor (MGR). If the ignition switch is turned off, the motor generator control ECU (MG ECU) will send a GSDN (MG1 shutdown signal) signal, MSDN (MG2 shutdown signal) signal and SDNR (MGR shutdown signal) signal to check the function of the HV gate block. If a shutdown malfunction is detected, this DTC will be stored.
|
DTC No. | Detection Item |
DTC Detection Condition |
Trouble Area | MIL |
Warning Indicate | Note |
|---|---|---|---|---|---|---|
|
P1C6B9F | Rear Motor Shutdown Stuck Off |
When the HV gate block function check is performed (when the ignition switch is turned from ON (READY) to off), the SDNR (MGR shutdown signal) signal is sent but the motor (MGR) inverter current and voltage (VH) do not decrease. (1 trip detection logic) |
Inverter with converter assembly |
Does not come on | Master Warning: Comes on |
SAE Code: P1C6B |
CONFIRMATION DRIVING PATTERN
HINT:
After repairs have been completed, clear the DTCs and then check that the vehicle has returned to normal by performing the following All Readiness check procedure.
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- Connect the GTS to the DLC3.
- Turn the ignition switch to ON and turn the GTS on.
- Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
- Turn the ignition switch off and wait for 2 minutes or more.
- Turn the ignition switch to ON (READY) and wait for 30 seconds or more.
- Turn the ignition switch off and wait for 2 minutes or more.
- Turn the ignition switch to ON and turn the GTS on.
- 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, perform driving pattern again.
PROCEDURE
|
1. | REPLACE INVERTER WITH CONVERTER ASSEMBLY |
Click here
| NEXT | .gif) | END |
READ NEXT:
Generator Shutdown Stuck Off (P1C6C9F)
DTC SUMMARY MALFUNCTION DESCRIPTION The hybrid vehicle control ECU detects malfunctions which prevent the generator (MG1) inverter shutdown circuit from shutting down the hybrid vehicle control system
Engine Failed to Start Mechanical Linkage Failure (P1C7779)
DTC SUMMARY MALFUNCTION DESCRIPTION This DTC is stored when the hybrid vehicle control ECU determines that the hybrid vehicle transaxle assembly has seized or that there is a hybrid vehicle transaxle
High Voltage Power Resource Circuit Voltage Sensor after Boosting Malfunction (P1C8349)
DTC SUMMARY MALFUNCTION DESCRIPTION The hybrid vehicle control ECU monitors the high-voltage wiring between the HV battery and inverter with converter assembly and detects a power supply malfunction.
SEE MORE:
Pressure Control Solenoid "K" Circuit Short to Ground or Open (P282814)
DESCRIPTION
Refer to DTC P282812.
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DTC No.
Detection Item
DTC Detection Condition
Trouble Area
MIL
Memory
Note
P282814
Pressure Control Solenoid "K" Circuit Short to Grou
Installation
INSTALLATION CAUTION / NOTICE / HINT COMPONENTS (INSTALLATION)
Procedure Part Name Code
1 LOOSEN NO. 1 EGR PIPE SUB-ASSEMBLY
25601
- -
2 LOOSEN EGR VALVE ASSEMBLY
25620
- -
3 NO. 1 EGR COOLER GAS
