Inspection Procedure

1. Disconnect the connector from the radio and navigation assy R12 and combination meter assy C7.
2. Measure the resistance according to the value(s) in the table below.
   Fig 1: Identifying Radio And Navigation Assy R12 Connector

   Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
   Fig 2: Identifying Combination Meter Assy C7 Connector

   Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

   Standard: 

   COMBINATION METER - RADIO AND NAVIGATION ASSY - RESISTANCE TABLE
   
   

   Tester Connection	Condition	Specified condition
   SPD - C7-36	Always	Below 1
   SPD - Body ground	Always	10 k or higher

   NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

   OK: Go to next step 

1. Connect the combination meter assy connector C7.
2. Measure the voltage.
   1. Adjust the shift lever to the neutral position.
   2. Jack up either one of the front wheels.
   3. Turn the ignition switch to the ON position.
   4. Measure the voltage between terminal C7-36 and body ground of combination meter assy when the front wheels are turned slowly.
      Fig 3: Identifying Combination Meter Assy Connector Terminal C7-36

      Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

      Standard: Voltage is pulsed as shown below. 

Fig 4: Identifying Voltage Pulse

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

NG: GO TO COMBINATION METER SYSTEM (See  HOW TO PROCEED WITH TROUBLESHOOTING  ) 

OK: REPLACE RADIO AND NAVIGATION ASSY (See  REPLACEMENT  )