Component Tests and General Diagnostics

1UR-FSE STARTING: SMART ACCESS SYSTEM WITH PUSH-BUTTON START: Engine Switch Indicator Circuit
- Engine Switch Indicator Circuit

DESCRIPTION

Engine start conditions or system malfunctions can be checked by the status of the engine switch indicator light.





WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. INSPECT ENGINE SWITCH





(a) Remove the engine switch.

(b) Apply battery voltage between the terminals of the switch, and check the illumination condition of the switch.

NOTICE:
* If the positive (+) lead and the negative (-) lead are incorrectly connected, the engine switch indicator light does not illuminate.
* If the voltage is too low, the indicator light will not illuminate.

OK:





NG -- REPLACE ENGINE SWITCH
OK -- Continue to next step.

2. CHECK WIRE HARNESS (ENGINE SWITCH - POWER SOURCE CONTROL ECU AND BODY GROUND)

(a) Disconnect the K29 switch connector.





(b) Disconnect the K73 ECU connector.

(c) Measure the resistance of the wire harness side connectors.

Standard resistance:





NG -- REPAIR OR REPLACE HARNESS AND CONNECTOR

OK -- REPLACE POWER SOURCE CONTROL ECU

3. REPLACE POWER SOURCE CONTROL ECU

4. REPLACE ENGINE SWITCH

5. REPAIR OR REPLACE HARNESS AND CONNECTOR