DTC P1C02: DCDC Output Voltage Abnormal
TROUBLE JUDGMENT
Check Condition
The PHEV-ECU allows the DC-DC converter to operate.
Judgment Criterion
The output voltage is abnormal.
FAIL-SAFE AND BACKUP FUNCTION
The output of DC-DC converter is stopped.
PROBABLE CAUSE
The installation of the 12V starter battery terminal is failed.
The external power supply is connected.
The on board charger/DC-DC converter is failed.
DIAGNOSIS
Required Special Tools
MB991223: Wiring harness set
MB992006: Extra fine probe
STEP 1. 12V starter battery condition check
Has high voltage ever been charged to the 12V starter battery from the external power supply before?
Erase the diagnostic trouble code, check end.
Go to Step 2
.
STEP 2. Check 12V starter battery
Check 12V starter battery (Refer to GROUP 54A - 12V Starter Battery - On-vehicle Service - Battery Test
).
Is the check result normal?
Go to Step 3
.
Replace the 12V starter battery.
STEP 3. Using scan tool (M.U.T.-IIISE), check whether the DTC is set.
Is the DTC set?
Replace the on board charger/DC-DC converter (Refer to
).
Intermittent malfunction (Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunctions
).