Code No. P064C: Glow Control Unit Malfunction




OPERATION




FUNCTION




TROUBLE JUDGMENT


Check Conditions
Judgment Criterion

FAIL-SAFE AND BACKUP FUNCTION




PROBABLE CAUSES




DIAGNOSTIC PROCEDURE


STEP 1. Perform voltage measurement at glow control unit connector.



  • Disconnect connector, and measure at harness side.
  • Voltage between terminal battery side power supply line and body earth.
OK: System voltage

Q. Is the check result normal?

Go to Step 2.

    Repair or replace the connector, or check and repair harness between glow control unit connector terminal and battery.

    • Check power supply line for open/short circuit.

STEP 2. Check harness between glow control unit connector terminal and battery.



  • Check power supply line for damage.

Q. Is the check result normal?

Go to Step 3.
Repair or replace the connector, or repair the damaged harness wire.

STEP 3. M.U.T.-III diagnosis code.



  • Reconfirmation of diagnosis code.

Q. Is the diagnosis code set?

Go to Step 4.
Intermittent malfunction (Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunctions ).

STEP 4. Replace the glow control unit.



  • After replacing the glow control unit, reconfirm whether the diagnosis code is set.

Q. Is the diagnosis code set?

Replace the engine-ECU.
Check is end.