Inspection Procedure

1. Disconnect the RAD NO. 1 fuse from the engine room relay block.
2. Disconnect the ACC fuse from the main body ECU.
3. Measure the resistance according to the value (s) in the table below.

   Standard Resistance 

   STANDARD RESISTANCE
   
   

   Tester Connection	Condition	Specified Condition
   RAD NO. 1 fuse	Always	Below 1 Ω
   ACC fuse

NG: REPLACE FUSE 

OK: Go to next Step 

1. Disconnect the F1 receiver connector.
2. Measure the resistance according to the value (s) in the table below.

   Standard Resistance 

   STANDARD RESISTANCE
   
   

   Tester Connection	Condition	Specified Condition
   F1-20 (GND) - Body ground	Always	Below 1 Ω

   Fig 1: Identifying F1 Receiver Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Measure the voltage according to the value (s) in the table below.

   Standard Voltage 

   STANDARD VOLTAGE
   
   

   Tester Connection	Switch Condition	Specified Condition
   F1-1 (B) - Body ground	Always	11 to 14 V
   F1-11 (ACC) - Body ground	Engine switch on (ACC)	11 to 14 V

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

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