Inspection Procedure

1. Remove the LH-IG fuse from the main body ECU LH.
2. Measure the resistance of the LH-IG fuse.

   Standard resistance: Below 1 Ω 

NG: REPLACE FUSE 

OK: Go to next step 

1. Disconnect the A38 ECU connector.
2. Measure the voltage of the wire harness side connector.

   Standard voltage 

   TESTER CONNECTION SPECIFIED CONDITION
   
   

   Tester Connection	Condition	Specified Condition
   A38-8 (IG) - Body ground	Power switch on (IG)	10 to 14 V

Fig 1: Identifying Clearance Warning ECU Connector Terminal
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Disconnect the A38 ECU connector.
2. Measure the resistance of the wire harness side connector.

   Standard resistance 

   TESTER CONNECTION SPECIFIED CONDITION
   
   

   Tester Connection	Specified Condition
   A38-27 (E) - Body ground	Below 1 Ω

Fig 2: Identifying Clearance Warning ECU Connector Terminal
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN  PROBLEM SYMPTOMS TABLE