REAR SUNSHADE SYSTEM TERMINALS OF ECU


  1. CHECK REAR SUNSHADE RELAY

    A01W4AME04

    1. Disconnect the P11 rear sunshade relay connector.

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

      Tech Tips

      Measure the values on the wire harness side with the connector disconnected.

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      P11-7 (IG) - P11-1 (E) GR - W-B IG power supply Engine switch off Below 1 V
      P11-7 (IG) - P11-1 (E) GR - W-B IG power supply Engine switch on (IG) 11 to 14 V
      P11-8 (B) - P11-1 (E) W - W-B Battery power supply Always 11 to 14 V
      P11-1 (E) - Body ground W-B - Body ground Ground Always Below 1 Ω

      If the result is not as specified, there may be a malfunction in the wire harness.

    3. Reconnect the P11 rear sunshade relay connector.

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

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      P11-3 (REV) - P11-1 (E) LG - W-B Reverse signal Engine switch on (IG), shift lever in any position other than R 11 to 14 V
      P11-3 (REV) - P11-1 (E) LG - W-B Reverse signal Engine switch on (IG), shift lever in R Below 1 V
      P11-5 (RSW) - P11-1 (E) V - W-B Rear sunshade switch signal Engine switch on (IG), rear sunshade switch (combination switch assembly) not pushed 11 to 14 V
      P11-5 (RSW) - P11-1 (E) V - W-B Rear sunshade switch signal Engine switch on (IG), rear sunshade switch (combination switch assembly) pushed Below 1.5 V

      If the result is not as specified, the rear sunshade relay may have a malfunction.

  2. CHECK INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY AND MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)


    1. Disconnect the H9 and MB junction block connectors.

      B001OQME02
      Text in Illustration
      *A for LHD *B for RHD

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

      Tech Tips

      Measure the values on the wire harness side with the connector disconnected.

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      MB-11 (GND1) - Body ground - Ground Always Below 1 Ω
      H9-3 (GND2) - Body ground W-B - Body ground Ground Always Below 1 Ω
      MB-30 (BECU) - Body ground - Battery power supply Always 11 to 14 V
      MB-29 (ACC) - Body ground - ACC power supply Engine switch on (ACC) 11 to 14 V
      MB-29 (ACC) - Body ground - ACC power supply Engine switch off Below 1 V
      MB-31 (ALTB) - Body ground - Battery power supply Always 11 to 14 V
      MB-32 (IG) - Body ground - IG power supply Engine switch on (IG) 11 to 14 V
      MB-32 (IG) - Body ground - IG power supply Engine switch off Below 1 V

      If the result is not as specified, there may be a malfunction in the wire harness.

    3. Reconnect the H9 and MB junction block connectors.

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

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      H10-15 (REV) - Body ground LG - Body ground Reverse signal Engine switch on (IG), shift lever in any position other than R 11 to 14 V
      H10-15 (REV) - Body ground LG - Body ground Reverse signal Engine switch on (IG), shift lever in R Below 1 V

      If the result is not as specified, the main body ECU (multiplex network body ECU) or instrument panel junction block assembly may have a malfunction.