Dtc 015 Operating Block Caused By Overheating


DESCRIPTION

INSPECTION PROCEDURE

CHECK FOR ENGINE COOLANT LEAK

CHECK ENGINE COOLANT QUALITY

INSPECT THERMOSTAT

INSPECT WATER PUMP ASSEMBLY

DTC 015 Operating Block caused by Overheating


DESCRIPTION


DTC Code
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 heater assembly. (DTCs 012 and/or 014 are detected 10 times in a row.)
  1. Engine coolant circuit (leaks, engine coolant quality, thermostat, water pump assembly)
  2. Heater assembly

INSPECTION PROCEDURE

HINT:
Clear the DTCs by pressing the memory clear buttons on the tester to unlock the ECU.
1.CHECK FOR ENGINE COOLANT LEAK

  1. Check for engine coolant leaks (LandCruiser RM00000419K013X_01_0016.html).



NG
REPAIR ENGINE COOLANT LEAK (LandCruiser RM00000419K013X_01_0016.html)
OK


2.CHECK ENGINE COOLANT QUALITY

  1. Check the engine coolant quality (LandCruiser RM00000419K013X_01_0016.html).



NG
REPLACE ENGINE COOLANT (LandCruiser RM00000419K013X_01_0016.html)
OK


3.INSPECT THERMOSTAT

  1. Remove the thermostat (LandCruiser RM000000MWE02ZX.html).

  1. Inspect the thermostat (LandCruiser RM000000V1K072X.html).



NG
REPLACE THERMOSTAT (LandCruiser RM000000MWE02ZX.html)
OK


4.INSPECT WATER PUMP ASSEMBLY

  1. Remove the water pump assembly (LandCruiser RM000000MWA035X.html).

  1. Inspect the water pump assembly (LandCruiser RM0000041DB011X.html).



NG
REPLACE WATER PUMP ASSEMBLY (LandCruiser RM000000MWA035X.html)
OK

REPLACE HEATER ASSEMBLY (LandCruiser RM000005TN8000X.html)