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Inspection Procedure

WARNING: This page is about a different car, the 2004 Toyota Sienna. However, it is still accessible from the selected car via links, so may be relevant.
  1. INSPECT APPARATUS 
    1. Choose the apparatus to be inspected.
      APPARATUS SPECIFICATION

      Apparatus Go to step
      Stereo component amplifier assy A
      Stereo component controller assy B
      Multi-display controller sub-assy C
      Navigation ECU Assy D
    1. B: Go to step   4 . 
    2. C: Go to step   6 . 
    3. D: Go to step   8 . 
    4. A: Go to next step. 
  2. SERVICE CHECK MODE (STEREO COMPONENT AMPLIFIER ASSY) 
    1. Perform the service check.
      1. Start the diagnosis system and read the check result for the stereo component amplifier assy.

        Standard: 

        SERVICE CHECK

        A "NCON" is displayed or nothing is displayed (DSP AMP)
        B "GOOD" is displayed
    1. B: REPLACE RADIO RECEIVER ASSY (See  REPLACEMENT  ) 
    2. A: Go to next step. 
  3. CHECK HARNESS AND CONNECTOR (RADIO RECEIVER ASSY - STEREO COMPONENT AMPLIFIER ASSY) 
    Fig 1: Identifying Radio Receiver Assy R15 & Stereo Component Amplifier Assy S11
    G02934060Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the connector from the radio receiver assy and stereo component amplifier assy.
      1. Check continuity between terminals at each condition, as shown in the chart.

        Standard: 

        TESTER CONNECTION & SPECIFICATION

        Tester connection Specified condition
        TX+ - TX+ Continuity
        TX- - TX- Continuity
      2. Check for a short between terminals at each condition, as shown in the chart.

        Standard: 

        TESTER CONNECTION & SPECIFICATION

        Tester connection Specified condition
        TX+ - Body ground No continuity
        TX- - Body ground No continuity
    1. NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 
    2. OK: REPLACE STEREO COMPONENT AMPLIFIER ASSY (See  REPLACEMENT  ) 
  4. SERVICE CHECK MODE (STEREO COMPONENT CONTROLLER ASSY) 
    1. Perform the service check.
      1. Start the diagnosis system and read the check result for the stereo component controller assy.

        Standard: 

        SERVICE CHECK

        A "NCON" is displayed or nothing is displayed (RSA-M)
        B "GOOD" is displayed
    1. B: REPLACE RADIO RECEIVER ASSY (See  REPLACEMENT  ) 
    2. A: Go to next step. 
  5. CHECK HARNESS AND CONNECTOR (RADIO RECEIVER ASSY - STEREO COMPONENT CONTROLLER ASSY) 
    Fig 2: Identifying Radio Receiver Assy R14 & Stereo Component Controller Assy R24 Connectors
    G02934061Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the connector from the radio receiver assy and stereo component controller assy.
      1. Check continuity between terminals at each condition, as shown in the chart.

        Standard: 

        TESTER CONNECTION & SPECIFIC CONDITION

        Tester connection Specified condition
        TX+ - TX+ Continuity
        TX- - TX- Continuity
      2. Check for a short between terminals at each condition, as shown in the chart.

        Standard: 

        TESTER CONNECTION & SPECIFIED CONDITION

        Tester connection Specified condition
        TX+ - Body ground No continuity
        TX- - Body ground No continuity
    1. NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 
    2. OK: REPLACE STEREO COMPONENT CONTROLLER ASSY (See  REPLACEMENT  ) 
  6. SERVICE CHECK MODE (MULTI-DISPLAY CONTROLLER SUB-ASSY) 
    1. Perform the service check.
      1. Start the diagnosis system and read the check result for the multi-display controller sub-assy.

        Standard: 

        SERVICE CHECK

        A "NCON" is displayed or nothing is displayed (RSE-ECU)
        B "GOOD" is displayed
    1. B: REPLACE RADIO RECEIVER ASSY (See  REPLACEMENT  ) 
    2. A: Go to next step. 
  7. CHECK HARNESS AND CONNECTOR (RADIO RECEIVER ASSY - MULTI-DISPLAY CONTROLLER SUB-ASSY) 
    Fig 3: Identifying Radio Receiver Assy R14 & Multi-display Controller R26 Connectors
    G02934062Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the connector from the radio receiver assy and multi-display controller sub-assy.
      1. Check continuity between terminals at each condition, as shown in the chart.

        Standard: 

        TESTER CONNECTION & SPECIFIC CONDITION

        Tester connection Specified condition
        TX+ - TX3+ Continuity
        TX- - TX3- Continuity
      2. Check for a short between terminals at each condition, as shown in the chart.

        Standard: 

        TESTER CONNECTION & SPECIFIED CONDITION

        Tester connection Specified condition
        TX+ - Body ground No continuity
        TX- - Body ground No continuity
    1. NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 
    2. OK: REPLACE MULTI-DISPLAY CONTROLLER SUB-ASSY (See  REPLACEMENT  ) 
  8. SERVICE CHECK MODE (NAVIGATION ECU ASSY) 
    1. Perform the service check.
      1. Start the diagnosis system and read the check result for the navigation ECU.

        Standard: 

        SERVICE CHECK

        A "NCON" is displayed or nothing is displayed (NAVI)
        B "GOOD" is displayed
    1. B: REPLACE RADIO RECEIVER ASSY (See  REPLACEMENT  ) 
    2. A: Go to next step. 
  9. CHECK HARNESS AND CONNECTOR (RADIO RECEIVER ASSY - NAVIGATION ECU ASSY) 
    Fig 4: Identifying Radio Receiver Assy R11 & Navigation ECU Assy N2 Connectors
    G02934063Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the connector from the radio receiver assy and navigation ECU.
      1. Check continuity between terminals at each condition, as shown in the chart.

        Standard: 

        TESTER CONNECTION & SPECIFIC CONDITION

        Tester connection Specified condition
        TX+ - TX+ Continuity
        TX- - TX- Continuity
      2. Check for a short between terminals at each condition, as shown in the chart.

        Standard: 

        TESTER CONNECTION & SPECIFIC CONDITION

        Tester connection Specified condition
        TX+ - Body ground No continuity
        TX- - Body ground No continuity
    1. NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 
    2. OK: REPLACE NAVIGATION ECU ASSY (See  REPLACEMENT  ) 
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