Inspection Procedure

1. Disconnect the ACC fuse from the driver side junction block.
2. Disconnect the RADIO NO. 2 fuse from the engine room relay block.
3. Measure the resistance according to the value (s) in the table below.

   Standard resistance 

   RESISTANCE SPECIFIED CONDITION
   
   

   Tester Connection	Condition	Specified Condition
   ACC fuse	Always	Below 1 Ω
   RADIO NO. 2 fuse	Always	Below 1 Ω

NG: REPLACE FUSE 

OK: Go to Next Step 

1. Disconnect the ACC CUT relay from the engine room relay block.
2. Measure the resistance according to the value (s) in the table below.

   Standard resistance 

   RESISTANCE SPECIFIED CONDITION
   
   

   Tester Connection	Condition	Specified Condition
   3-4	Always	10 kΩ or higher
   3-4	Battery voltage is applied to terminals 1 and 2	Below 1 Ω

NG: REPLACE RELAY 

Fig 1: Identifying ACC CUT Relay Circuit With Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: Go to Next Step 

1. Disconnect the S39 and S42 amplifier connectors.
2. Measure the voltage according to the value (s) in the table below.

   Standard voltage 

   VOLTAGE SPECIFIED CONDITIONS
   
   

   Tester Connection	Switch Condition	Specified Condition
   S39-12 (ACC) -Body ground	Ignition switch ACC	11 to 14 V
   S42-1 (+B) - Body ground	Always	11 to 14 V
   S42-3 (+B2) - Body ground	Always	11 to 14 V

3. Measure the resistance according to the value (s) in the table below.

   Standard resistance 

   RESISTANCE SPECIFIED CONDITION
   
   

   Tester Connection	Condition	Specified Condition
   S42-6 (GND2) - Body ground	Always	Below 1 Ω
   S42-2 (GND) - Body ground	Always	Below 1 Ω

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

Fig 2: Identifying S39 And S42 Amplifier Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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