Toyota Corolla (E120): Door key lock and unlock switch circuit

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Inspection procedure
Hint: if dtcs p0115, p0116, p0117, p0118 and p0125 are output simultaneously, the engine coolant temperature sensor circuit may be open or short. Perform the troubleshooting of dtc p0115, p0117 or p0118 first. Read freeze frame data using the hand-held tester or the obd ii scan to ...

Inspection procedure
1 Check security indicator light Remove the security indicator.  check the indicator light, as shown in the illustration and table. Standard: 2 Check wire harness (tvip ecu  security indicator) Disconnect the tvip ecu and security indicator connectors.   ...

Inspection procedure
1 Check relay (marking: starter cut) Inspect the relay continuity, as shown in the illustration and table. Standard: 2 Check tvip ecu Disconnect the tvip ecu connector.  turn the ignition switch position to the start.  measure the voltage between the termina ...