This DTC is output when a problem such as an open in the AM2 fuse, an open or short in the wire harness between the fuse and power source control ECU, a short in the IG output circuit inside the power source control ECU, a short between the power source control ECU and relay, and a short in the relay is detected.

Lexus IS250 IS220d GSE20 ALE20 2AD-FHV STARTING

Connect the intelligent tester to the DLC3.

Connect the intelligent tester to the DLC3.

Push-button start function data and the Diagnostic Trouble Codes (DTCs) can be read through the Data Link Connector 3 (DLC3) of the vehicle. When the function seems to be malfunctioning, use the intelligent tester to check for malfunctions and perform repairs.

Disconnect the J55 ECU connector.

Lexus IS250 IS220d GSE20 ALE20 2AD-FHV STARTING

If the voltage is below 11 V, recharge or replace the battery before proceeding.

The push-button start function uses a push-type engine switch, which the driver can operate by merely carrying the electrical key. This system consists primarily of the power source control ECU, engine switch, ID code box, steering lock ECU, electrical key, ACC relay, IG1 relay, IG2 relay and certification ECU. The power source control ECU controls the function. This function operates in cooperation with the entry and start system.

Lexus IS250 IS220d GSE20 ALE20 2AD-FHV STARTING