DTC P0597-12: Thermostat Heater Control Circuit Short to Battery [08/2020 - 12/2021]: Procedure
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- INSPECT WATER INLET WITH THERMOSTAT SUB-ASSEMBLY
Result:
NG
REPLACE THERMOSTAT HEATER (WATER INLET WITH THERMOSTAT SUB-ASSEMBLY)
Result:
OK
See step 2
- CHECK HARNESS AND CONNECTOR (THERMOSTAT HEATER (WATER INLET WITH THERMOSTAT SUB-ASSEMBLY) - ECM)
- Disconnect the thermostat heater (water inlet with thermostat sub-assembly) connector.
- Disconnect the ECM connector.
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition F5-2 (ETM-) or C45-7 (HTHM) - other terminals Always 10 kΩ or higher Result
Proceed to OK NG
Result:
OK
REPLACE ECM. Refer to REMOVAL [08/2020 - 12/2021]
Result:
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR