MALFUNCTION DESCRIPTION
The hybrid vehicle control ECU assembly detects malfunctions which prevent the generator (MG1) inverter shutdown circuit from shutting down the hybrid vehicle control system. Detection is performed during the shutdown sequence when the power switch is turned off. If generator (MG1) inverter operation is detected after a shutdown signal was sent to the generator (MG1) inverter, the hybrid vehicle control ECU assembly will determine that there is a malfunction and store this DTC.
The cause of this malfunction may be the following:
Inverter with converter assembly malfunction
Refer to the description for DTC P1C6A9F.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | MIL | Warning Indicate | Note |
|---|---|---|---|---|---|---|
| P1C6C9F | Generator Shutdown Stuck Off | When the HV gate block function check is performed (when the power switch is turned from on (READY) to off), the GSDN (MG1 shutdown) signal is sent but the generator (MG1) 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:
P1C6C |
| DTC No. | Data List |
|---|---|
| P1C6C9F | ·
Ready Signal ·
VH-Voltage after Boosting |
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.
Connect the GTS to the DLC3.
Turn the power switch on (IG) and turn the GTS 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 (READY) and wait for 30 seconds or more.
Turn the power switch off and wait for 2 minutes or more.
Turn the power switch on (IG) and turn the GTS on.
Enter the following menus: Powertrain / Hybrid Control / Utility / All Readiness.
Check the DTC judgment result.
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.
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