Inspection Procedure

1. Disconnect the R10 connector from the radio and navigation assembly.
2. Disconnect the T10 connector from the television camera assembly.
   Fig 1: Checking Harness And Connector (Radio And Navigation Assembly - Television Camera Assembly)

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

   Standard resistance 

   TESTER CONNECTION AND SPECIFIED CONDITION
   
   

   Tester connection (Terminal No.)	Condition	Specified condition
   CB+ (T10-4) - CA+ (R10-24)	Always	Below 1 Ω
   CGND (T10-3) - CGND (R10-21)	Always	Below 1 Ω
   CV+ (T10-2) - V+ (R10-22)	Always	Below 1 Ω
   CV- (T10-1) - V- (R10-23)	Always	Below 1 Ω
   CB+ (T10-4) - Body ground	Always	10 kΩ or higher
   CGND (T10-3) - Body ground	Always	10 kΩ or higher
   CV+ (T10-2) - Body ground	Always	10 kΩ or higher
   CV- (T10-1) - Body ground	Always	10 kΩ or higher

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to Next Step 

1. Reconnect the radio and navigation assembly R10 connector.
   Fig 2: Inspecting Radio And Navigation Assembly

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

   Standard voltage 

   TESTER CONNECTION AND SPECIFIED CONDITION
   
   

   Tester connection	Condition	Specified condition
   CB+ (T10-4) - CGND (T10-3)	Ignition switch ON Shift lever R position	Approx. 6 V

NG: REPLACE RADIO AND NAVIGATION ASSEMBLY 

OK: Go to Next Step 

1. Reconnect the radio and navigation assembly R10 connector and the television camera assembly T10 connector.
   Fig 3: Connecting Radio And Navigation R10 Connector And Television Camera Assembly T10 Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Check the waveform of the television camera assembly using an oscilloscope.
   1. Measurement terminal: CV+ - CV-

      Measurement setting: 0.2 V/DIV, 0.2 μs/DIV

      Condition: Ignition switch ON, Shift lever in R range

      OK: Pulses as shown in the illustration. 

Fig 4: Oscilloscope Pulse
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NG: REPLACE TELEVISION CAMERA ASSEMBLY 

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