STEP 1. Using scan tool (M.U.T.-IIISE), check whether the other DTC is set.
STEP 2. 12 volts starter battery check.
STEP 3. Using scan tool (M.U.T.-IIISE), check the data list.
Check that the following data list display contents are normal (Refer to ).Data list
- Item No.83: Control power supply SNS.voltage
OK:Approximately 12 volts are displayed (When the power supply mode of the electric motor switch is on.)
Approximately 14 volts are displayed: [When the brake pedal is stepped on while stepping on the brake pedal it is on (READY operation).]
Is the check result normal?
Go to Step 7. Go to Step 4.
STEP 4. Check the power supply line for open, short, damage, proper installation circuit [On board charger/DC-DC converter connector (+B) and the fusible link No.11].
STEP 5. Voltage measurement at on board charger/DC-DC converter connector (IGCT)
(1) Turn off the power supply mode of the electric motor switch.
(2) Disconnect the on board charger/DC-DC converter connector (terminal IGCT), and measure the voltage at the wiring harness side.
(3) Turn on the power supply mode of the electric motor switch.
(4) Measure the voltage between the on board charger/DC-DC converter connector (terminal IGCT) and the body ground.OK: Approximately 12 volts (battery positive voltage).
Is the check result normal?
Go to Step 7. Go to Step 6.
STEP 6. Check the power supply line for open circuit. [IGCT control relay (relay box) connector (terminal No.3) and the on board charger/DC-DC converter connector (terminal IGCT)].
STEP 7. 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 ). The trouble can be an intermittent malfunction (Refer to GROUP 00, How to Cope with Intermittent Malfunction ).