LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Lexus >> 2006 >> RX 330 FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 16 (Back Monitor System - Diagnostics) >> Pre-Check
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Section 16 (Back Monitor System - Diagnostics): Pre-Check

WARNING: This page is about a different car, the 2006 Toyota 4Runner. However, it is still accessible from the selected car via links, so may be relevant.
  1. INSPECT TELEVISION CAMERA 
    1. Standard signal check
      1. Using the tester, measure the voltage and the resistance according to the value(s) in TERMINAL REFERENCE TABLE  .

        HINT:

        Leave the connector being connected.

      2. Using the oscilloscope, check waveforms between terminals.
        Fig 1: Identifying T11 Connector
        G04336406Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

        HINT:

        • Leave the connector being connected.
        • The waveform shown is an example.

          Noise waveform and chattering waveform are omitted.

          Standard 

          Connector T11 

          TERMINAL REFERENCE TABLE

          Terminal No. Terminal symbol Input/Output Tester connection (Wiring color) Item Condition Specified condition Problem symptom when open circuit is detected.
          Problem symptom when short circuit is detected.
          1 CB+ Input T11-1 -T11-2 (R W) Voltage IG SW ON, Shift lever in R range IG SW ON, Shift lever in R range Approx. 6 V Back monitor does not display images.
          Fuse blows out
          2 CGND Output T11-2 - Body ground (W - Body ground) Continuity Always Continuity Back monitor does not display images.
          3 CV- Output T11-3 - Body ground (BR - Body ground) Continuity IG SW ON, Shift lever in R range Continuity Back monitor does not display images.
          4 CV+ Output T11-4 - T11-3 (B - BR) Waveform IG SW ON, Shift lever in R range Approx. 0.65 V (Waveform 1) Back monitor does not display images.

          < Reference > 

    2. Oscilloscope waveform
      Fig 2: Identifying Oscilloscope Waveform
      G04336407Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Waveform 1

        Standard 

        WAVEFORM REFERENCE TABLE

        Item Content
        Terminal CV+left right CV-
        Tool setting 0.2 V/DIV, 0.2 s/DIV
        Condition IG SW ON, shift lever in R range
  2. INSPECT RADIO AND NAVIGATION ASSEMBLY (BACK MONITOR CONTROLLER) 
    1. Standard signal check
      1. Using the tester, measure the voltage and the resistance according to the value(s) in TERMINAL REFERENCE TABLE  .

        HINT:

        Leave the connectors being connected.

      2. Check waveforms between terminals.

        HINT:

        • Leave the connectors being connected.
        • The waveform shown is an example. Noise waveform and chattering waveform are omitted.
          Fig 3: Identifying Radio & Navigation Assembly Connector
          G04336408Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

          Standard 

          Connector R12 

          TERMINAL REFERENCE TABLE

          Terminal No. Terminal symbol Input/Output Tester connection Item Condition Specified condition Problem symptom when open circuit is detected.
          Problem symptom when short circuit is detected.
          1 B Input R12-1 - R12-20 (L Y BR) Voltage Always 10 to 14 V Radio and navigation assembly does not operate.
          Fuse blows out.
          11 ACC Input R12-11 - R12-20 (GR BR) Voltage IG SW ACC 10 to 14 V Radio and navigation assembly does not operate.
          Fuse blows out.
          20 GND Output R12-20 - Body ground (BR - Body ground) Continuity Always Continuity Back monitor does not display images.

          Connector R9 

          TERMINAL REFERENCE TABLE

          Terminal No. Terminal symbol Input/Output Tester connection (Wiring color) Item Condition Specified condition Problem symptom when open circuit is detected.
          Problem symptom when short circuit is detected.
          5 REV Input R9-5-R12-20 (R Y BR) Voltage Shift lever in except R range --> R range Less than 1 V --> 10 to 14 V Back monitor does not display images.
          Fuse blows out.

          Connector R26 

          TERMINAL REFERENCE TABLE

          Terminal No. Terminal symbol Input/Output Tester connection (Wiring color) Item Condition specified condition Problem symptom when open circuit is detected.
          Problem symptom when short circuit is detected.
          22 V+ Input R26-22 - R26-23 (B - Shielded) Waveform IG SW ON, shift lever in R range Approx. 0.65 V (Waveform 1) Back monitor does not display images.
          24 CA+ Output R26-24 - R26-21 (R-W) Voltage IG SW ON, shift lever in R range 6 V Back monitor does not display images.
          Fuse blows out.
          23 V- Input R26-23 - R26-21 (Shielded - W) Continuity IG SW ON, shift lever in R range Continuity Back monitor does not display images.
          21 CGND - R26-21 - Body ground (W - Body ground) Continuity Always Continuity Back monitor does not display images.

          < Reference > 

    2. Oscilloscope waveform
      1. Waveform 1
        Fig 4: Identifying Oscilloscope Waveform
        G04336409Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

        Standard 

        WAVEFORM REFERENCE TABLE

        Item Content
        Terminal V+left rightV-
        Tool setting 0.2 V/DIV, 0.2 s/DIV
        Condition IG SW ON, shift lever in R range
  3. INSPECT BACK MONITOR CAMERA WIRE 
    1. Continuity check
      1. Using the tester, measure the resistance according to the value(s) in TESTER CONNECTION SPECIFIED CONDITION TABLE  .

        Standard 

        TESTER CONNECTION SPECIFIED CONDITION TABLE

        Tester Connection Specified Condition
        R26-21 - T11-2 Continuity
        R26-22 - T11-4 Continuity
        R26-23 - T11-3 Continuity
        R26-24 - T11-1 Continuity
        R26-22 - Body ground No Continuity
        R26-24 - Body ground No Continuity
        Fig 5: Identifying R26 & T11 Connector
        G04336410Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
scientia non olet · About LEMON Manuals