DESCRIPTION
INSPECTION PROCEDURE
CHECK FOR ENGINE COOLANT LEAKS
CHECK ENGINE COOLANT QUALITY
INSPECT THERMOSTAT
INSPECT WATER PUMP ASSEMBLY
DTC 015 Operating Block caused by Overheating
DESCRIPTION
| DTC No. | DTC Detection Condition | Trouble Area |
| 015 |
The control overheating sensor detects overheating of the engine coolant, and the power heater ECU stops the operation of the combustion heater assembly.
(Either or both of DTCs 012 and 014 are detected 10 times in a row.) |
Engine coolant circuit (for leaks, engine coolant quality, thermostat, water pump assembly)
Combustion heater assembly
|
INSPECTION PROCEDURE
- Clear the DTCs by pressing the memory clear buttons on the tester to unlock the ECU.
| 1.CHECK FOR ENGINE COOLANT LEAKS |
Check for engine coolant leaks .
| | REPAIR ENGINE COOLANT LEAKS |
|
|
| 2.CHECK ENGINE COOLANT QUALITY |
Check the engine coolant quality .
| 4.INSPECT WATER PUMP ASSEMBLY |
Inspect the water pump assembly .
| | REPLACE WATER PUMP ASSEMBLY |
|
|
| OK | |
| |
| REPLACE COMBUSTION HEATER ASSEMBLY |
|
LEXUS IS250, IS220d / GSE20 ALE20