Inspection Procedure

1. Remove the LH-IG fuse from the cowl side junction block LH.
2. Measure the resistance of the LH-IG fuse.

   Standard resistance: 

   Below 1 Ω 

NG: REPLACE LH-IG 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 CHART
   
   

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

Fig 1: Identifying A38 ECU Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS AND CONNECTOR (CLEARANCE WARNING ECU - BATTERY) 

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 CHART
   
   

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

Fig 2: Identifying A38 ECU Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 

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