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DTC P1D26: Inside Temperature Abnormal
DTC P1D27: PFC Temperature Abnormal
DTC P1D28: Abnormal Temperature In Inverter Circuit 1
DTC P1D29: Abnormal Temperature In Inverter Circuit 2
 
 
 
 
TROUBLE JUDGMENT
Check Condition
  • While the on board charger is allowed to charge from PHEV-ECU.
Judgment Criterion
  • <DTC P1D26>
    • The internal ambient temperature sensor detects the abnormal temperature.
  • <DTC P1D27>
    • The temperature sensor of the power factor correction circuit detects the abnormal temperature.
  • <DTC P1D28>
    • The temperature sensor 1 in the voltage booster circuit detects the abnormal temperature.
  • <DTC P1D29>
    • The temperature sensor 2 in the voltage booster circuit detects the abnormal temperature.
 
 
 
FAIL-SAFE AND BACKUP FUNCTION
  • The charge is stopped.
 
 
PROBABLE CAUSES
  • The cooling system is failed.
  • The on board charger/DC-DC converter is failed.
 
 
 
 
DIAGNOSIS
Required Special Tools
  • MB991223: Wiring harness set
  • MB992006: Extra fine probe
STEP 1. Using scan tool (M.U.T.-IIISE), check on board charger/DC-DC converter data list.
  • Data List Reference Table (Refer to ).
    • Item No.38: PFC temperature
    • Item No.39: Inverter temperature 1
    • Item No.40: Inverter temperature 2
    • Item No.41: Inside temperature
Are the check result normal?
Go to Step 2.
Replace the on board charger/DC-DC converter (Refer to ).
 
STEP 2. Check the cooling system.
  • Check the overheating [Refer to GROUP 54Da - PHEV-ECU - Symptom Chart - EV system overheat (water cooling system) ].
Is the check result normal?
Go to Step 3.
Repair it.
 
STEP 3. Using scan tool (M.U.T.-IIISE), check whether the DTC is set again.
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 ).