STEP 1. Check the fan control relay.
STEP 2. Check the fusible link SBF4 (relay box 1) and SBF1 (relay box 1).
STEP 3. Check the power supply line for open circuit and short to ground circuit [fusible link (SBF1) and the PHEV-ECU].
STEP 4. Using scan tool (M.U.T.-IIISE), check whether the DTC is set again.
Recheck the DTC.(1) Erase the DTC.
(2) Turn off the power supply mode of the electric motor switch.
(3) Turn on the power supply mode of the electric motor switch.
(4) Check the DTC.
Is the DTC set?
Replace the PHEV-ECU (Refer to ). Then go to Step 5. The trouble can be an intermittent malfunction (Refer to GROUP 00, How to Cope with Intermittent Malfunction ).
STEP 5. Test the OBD-II drive cycle.