Inspection Procedure

1. Measure the voltage according to the value(s) in the table below.

   Standard voltage 

   TESTER CONNECTION SPECIFIED CONDITION
   
   

   Tester Connection	Condition	Specified Condition
   MCVD - Body ground	Ignition switch ACC	4 to 6 V

   Fig 1: Identifying Radio Receiver Connector Terminal

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPLACE RADIO RECEIVER 

OK: Go to Next Step 

1. Disconnect the radio receiver connector.
Fig 2: Identifying Radio Receiver Connector Terminals
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the resistance according to the value(s) in the table below.

   Standard resistance 

   TESTER CONNECTION SPECIFIED CONDITION
   
   

   Tester Connection	Condition	Specified Condition
   TSW- -SGND	Always	Below 1 Ω
   TSW- - Body ground	Always	10 kΩ or higher

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to Next Step 

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

   Standard resistance 

   TESTER CONNECTION SPECIFIED CONDITION
   
   

   Tester Connection	Condition	Specified Condition
   MCVD - MACC	Always	Below 1 Ω
   ARI - MI1+	Always	Below 1 Ω
   ALI - MIC-	Always	Below 1 Ω
   MCVD - Body ground	Always	10 kΩ or higher
   ARI - Body ground	Always	10 kΩ or higher
   ALI - Body ground	Always	10 kΩ or higher

   Fig 3: Identifying Microphone And Radio Receiver Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

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