POWER MIRROR CONTROL SYSTEM TERMINALS OF ECU


  1. CHECK OUTER MIRROR CONTROL ECU ASSEMBLY (LH SIDE)

    A019MAHE09

    1. Disconnect the z4 and J3 connectors.

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

      Tech Tips

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

      Standard Voltage
      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      J3-14 (BDR) - Body ground Y - Body ground +B power supply Always 11 to 14 V
      J3-6 (CPUB) - Body ground L - Body ground +B power supply Always 11 to 14 V
      J3-5 (SIG) - Body ground Y - Body ground Ignition power supply Engine switch off → on (IG) 0 V → 11 to 14 V

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

    3. Measure the resistance according to the value(s) in the table below.

      Tech Tips

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

      Standard Resistance
      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      J3-7 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω

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

    4. Reconnect the z4 and J3 connectors.

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

      Standard Voltage
      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      z4-1 (LMVR) - z4-9 (LMHR) V - BR Vertical mirror motor drive voltage LH mirror surface moving upward → stopped 11 to 14 V → 0 V
      z4-10 (LM+R) - z4-1 (LMVR) R - V Vertical mirror motor drive voltage LH mirror surface moving downward → stopped 11 to 14 V → 0 V
      z4-10 (LM+R) - z4-9 (LMHR) R - BR Horizontal mirror motor drive voltage LH mirror surface moving right → stopped 11 to 14 V → 0 V
      z4-9 (LMHR) - z4-1 (LMVR) BR - V Horizontal mirror motor drive voltage LH mirror surface moving left → stopped 11 to 14 V → 0 V
      z4-3 (MR+) - Body ground L - Body ground Power retract mirror motor drive voltage Outer rear view mirror LH being retracted → stopped 11 to 14 V → 0 V
      z4-11 (MR-) - Body ground G - Body ground Power retract mirror motor drive voltage Outer rear view mirror LH returning → stopped 11 to 14 V → 0 V
      z4-4 (HTR+) - z4-12 (HTR-) B - B-Y Mirror heater relay drive voltage rear defogger switch on 11 to 14 V
      z4-5 (LVC) - z4-14 (LE1) R-W - GR Mirror position sensor power supply Engine switch on (IG) 4.55 to 5.45 V
      z4- 6 (VSSR) - z4-14 (LE1) Y-B - GR Mirror position sensor signal Engine switch on (IG) 0.96 to 4.04 V
      z4- 6 (VSSR) - z4-14 (LE1) Y-B - GR Mirror position sensor signal Engine switch on (IG) 0.96 to 4.04 V

  2. CHECK OUTER MIRROR CONTROL ECU ASSEMBLY (RH SIDE)

    A019MAHE10

    1. Disconnect the z3 and I4 connectors.

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

      Tech Tips

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

      Standard Voltage
      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      I4-6 (CPUB) - Body ground P - Body ground +B power supply Always 11 to 14 V
      I4-14 (BDR) - Body ground G - Body ground +B power supply Always 11 to 14 V
      I4-5 (SIG) - Body ground GR - Body ground Ignition power supply Engine switch off → on (IG) 0 V → 11 to 14 V

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

    3. Measure the resistance according to the value(s) in the table below.

      Tech Tips

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

      Standard Resistance
      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      z3-7 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω

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

    4. Reconnect the z3 and I4 connectors.

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

      Standard Voltage
      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      z3-1 (RMVR) - z3-9 (RMHR) V - BR Vertical mirror motor drive voltage RH mirror surface moving upward → stopped 11 to 14 V → 0 V
      z3-10 (RM+R) - z3-1 (RMVR) R - V Vertical mirror motor drive voltage RH mirror surface moving downward → stopped 11 to 14 V → 0 V
      z3-10 (RM+R) - z3-9 (RMHR) R - BR Horizontal mirror motor drive voltage RH mirror surface moving right → stopped 11 to 14 V → 0 V
      z3-9 (RMHR) - z3-1 (RMVR) BR - V Horizontal mirror motor drive voltage RH mirror surface moving left → stopped 11 to 14 V → 0 V
      z3-3 (MR+) - Body ground L - Body ground Power retract mirror motor drive voltage Outer rear view mirror RH being retracted → stopped 11 to 14 V → 0 V
      z3-11 (MR-) - Body ground G - Body ground Power retract mirror motor drive voltage Outer rear view mirror RH returning → stopped 11 to 14 V → 0 V
      z3-4 (HTR+) - z3-12 (HTR-) B - B-Y Mirror heater relay drive voltage rear defogger switch on 11 to 14 V
      z3-5 (RVC) - z3-14 (RE1) R-W - GR Mirror position sensor power supply Engine switch on (IG) 4.55 to 5.45 V
      z3- 6 (VSSR) - z3-14 (RE1) Y-B - GR Mirror position sensor signal Engine switch on (IG) 0.96 to 4.04 V
      z3- 6 (VSSR) - z3-14 (RE1) Y-B - GR Mirror position sensor signal Engine switch on (IG) 0.96 to 4.04 V