Inspection Procedure

1. Drive the vehicle and check if the function of the speedometer on the combination meter is normal.

   OK: 

   Actual vehicle speed and the speed indicated on the speedometer are the same. 

   HINT:

   The vehicle speed sensor is functioning normally when the indication on the speedometer is normal.

NG: CHECK COMBINATION METER 

OK: GO TO NEXT STEP. 

1. Disconnect the radio and navigation assembly connector R9.
2. Measure the voltage.
   1. Jack up either one of the drive wheels.
   2. Move the shift lever to the neutral position.
   3. Turn the ignition switch to the ON position.
      Fig 1: Disconnecting Radio & Navigation Assembly Connector R9

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   4. Measure the voltage between terminal SPD of the radio and navigation assembly and body ground when the drive wheels are turned slowly.

      OK: 

      Voltage pulses as shown in  Fig 2 . 

      Fig 2: Identifying Voltage Pulses

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: Go to step   3 

OK: REPLACE RADIO AND NAVIGATION ASSEMBLY 

1. Disconnect the radio and navigation assembly connector R9 and combination meter connector C9.
2. Measure the resistance according to the value(s) in TESTER CONNECTION SPECIFIED CONDITION .

   Standard: 

   TESTER CONNECTION SPECIFIED CONDITION
   
   

   Tester connection	Condition	Specified condition
   SPD - C9-5	Ignition switch OFF	Below 1

   Fig 3: Disconnecting Radio & Navigation Assembly Connector R9 & Combination Meter Connector C9

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: GO TO NEXT STEP. 

1. Disconnect the radio and navigation assembly connector R9 and combination meter connector C9.
2. Measure the resistance according to the value(s) in TESTER CONNECTION SPECIFIED CONDITION .

   Standard: 

   TESTER CONNECTION SPECIFIED CONDITION
   
   

   Tester connection	Condition	Specified condition
   SPD - Body ground	Ignition switch OFF	10 k or higher

   HINT:

   If the resistance between terminal SPD and body ground is less than 10 k, there may be a short in a wire harness, connector, or ECU.

   Fig 4: Disconnecting Radio & Navigation Assembly Connector R9 & Combination Meter Connector C9

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR OR CHECK EACH ECU 

OK: REPLACE COMBINATION METER