DTC C120C: Linear Solenoid Power Supply System Malfunction [03/2020 - ]: Procedure
WARNING: This page is about a different car, the 2024 Toyota Camry, 2023 Toyota Camry, 2022 Toyota Camry, 2021 Toyota Camry, and 2020 Toyota Camry. However, it is still accessible from the selected car via links, so may be relevant.
- CHECK HARNESS AND CONNECTOR (IG1 TERMINAL)
- Disconnect the K145 4WD ECU assembly connector.
*a Front view of wire harness connector
(to 4WD ECU Assembly) - Turn the ignition switch to ON.
- Measure the voltage according to the value(s) in the table below.
Standard Voltage
Tester Connection Condition Specified Condition K145-3 (IG1) -Body ground Ignition switch ON 11 to 14 V Result
Proceed to OK NG
Result:
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
Result:
OK
See step 2
- Disconnect the K145 4WD ECU assembly connector.
- CHECK HARNESS AND CONNECTOR (GND TERMINAL)
- Turn the ignition switch off.
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition K145-4 (GND) -Body ground Always Below 1 Ω Result
Proceed to OK NG
Result:
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
Result:
OK
See step 3
- RECONFIRM DTC
- Clear the DTC.
Chassis > Four Wheel Drive > Clear DTCs
- Turn the ignition switch to ON.
- Check that no DTCs other than DTC C120C have been output.
Chassis > Four Wheel Drive > Trouble Codes
Result
Result Proceed to DTCs other than DTC C120C are not output A DTCs other than DTC C120C are output B
Result:
A
REPLACE 4WD ECU ASSEMBLY. Refer to REMOVAL [03/2020 - 10/2020] , or refer to REMOVAL [10/2020 - ]
Result:
B
REPAIR CIRCUIT INDICATED BY OUTPUT CODE. Refer to DIAGNOSTIC TROUBLE CODE CHART [03/2020 - 10/2020] , or refer to DIAGNOSTIC TROUBLE CODE CHART [10/2020 - ]
- Clear the DTC.