COMBUSTION TYPE POWER HEATER SYSTEM, Diagnostic DTC:015

DTC Code DTC Name
015 Operating Block caused by Overheating

DESCRIPTION

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

015

Operating Block caused by Overheating

The control overheating sensor detects overheating of the engine coolant, and the power heater ECU stops the operation of the heater assembly. (DTCs 012 and/or 014 are detected 10 times in a row.)

  • Engine coolant circuit (leaks, engine coolant quality, thermostat, water pump assembly)

  • Heater assembly

CAUTION / NOTICE / HINT

Tip:

Clear the DTCs by pressing the memory clear buttons on the tester to unlock the ECU.

PROCEDURE

  1. CHECK FOR ENGINE COOLANT LEAKS

    1. Check for engine coolant leaks.

    Result

    Proceed to

    OK

    NG
    NG

    REPAIR ENGINE COOLANT LEAKS

    OK

  2. CHECK ENGINE COOLANT QUALITY

    1. Check the engine coolant quality.

    Result

    Proceed to

    OK

    NG
    NG

    REPLACE ENGINE COOLANT

    OK

  3. INSPECT THERMOSTAT

    1. Remove the thermostat.

    2. Inspect the thermostat.

    Result

    Proceed to

    OK

    NG
    NG

    REPLACE THERMOSTAT

    OK

  4. INSPECT WATER PUMP ASSEMBLY

    1. Remove the water pump assembly.

    2. Inspect the water pump assembly.

    Result

    Proceed to

    OK

    NG
    OK

    REPLACE HEATER ASSEMBLY

    Click here

    NG

    REPLACE WATER PUMP ASSEMBLY