POWER WINDOW CONTROL SYSTEM TERMINALS OF ECU


  1. CHECK MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY

    A0094E0E25
    Text in Illustration
    *A for LHD *B for RHD

    • *1: for LHD

    • *2: for RHD


    1. Disconnect the K4*1 or J9*2 multiplex network master switch 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.

      for LHD:
      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      K4-11 (B) - K4-12 (GND) L - W-B Power supply Always 11 to 14 V
      K4-12 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω
      for RHD:
      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      J9-11 (B) - J9-12 (GND) L - W-B Power supply Always 11 to 14 V
      J9-12 (GND) - 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 K4*1 or J9*2 multiplex network master switch connector.

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

      for LHD:
      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      K4-15 (DOWN) - K4-12 (GND) B - W-B Power window motor down input Ignition switch ON, driver side power window regulator switch off 11 to 14 V
      K4-15 (DOWN) - K4-12 (GND) B - W-B Power window motor down input Ignition switch ON, driver side power window switch down (Manual operation) Below 1 V
      K4-18 (LED) - K4-12 (GND) V - W-B LED illumination signal Ignition switch ON 11 to 14 V
      K4-18 (LED) - K4-12 (GND) V - W-B LED illumination signal Approximately 43 seconds after ignition switch turned off Below 1 V
      K4-20 (UP) - K4-12 (GND) P - W-B Power window motor up input Ignition switch ON, driver side power window switch off 11 to 14 V
      K4-20 (UP) - K4-12 (GND) P - W-B Power window motor up input Ignition switch ON, driver side power window switch up (Manual operation) Below 1 V
      for RHD:
      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      J9-15 (DOWN) - J9-12 (GND) B - W-B Power window motor down input Ignition switch ON, driver side power window regulator switch off 11 to 14 V
      J9-15 (DOWN) - J9-12 (GND) B - W-B Power window motor down input Ignition switch ON, driver side power window switch down (Manual operation) Below 1 V
      J9-18 (LED) - J9-12 (GND) V - W-B LED illumination signal Ignition switch ON 11 to 14 V
      J9-18 (LED) - J9-12 (GND) V - W-B LED illumination signal Approximately 43 seconds after ignition switch turned off Below 1 V
      J9-20 (UP) - J9-12 (GND) P - W-B Power window motor up input Ignition switch ON, driver side power window switch off 11 to 14 V
      J9-20 (UP) - J9-12 (GND) P - W-B Power window motor up input Ignition switch ON, driver side power window switch up (Manual operation) Below 1 V

      If the result is not as specified, the multiplex network master switch may have a malfunction.

  2. CHECK POWER WINDOW REGULATOR SWITCH ASSEMBLY

    A00958AE01
    Text in Illustration
    *A for LHD *B for RHD

    • *1: for LHD

    • *2: for RHD


    1. Disconnect the J1*1 or K10*2 power window regulator switch connector.

    2. 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.

      for LHD:
      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      J1-1 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω
      for RHD:
      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      K10-1 (GND) - 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 J1*1 or K10*2 power window regulator switch connector.

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

      for LHD:
      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      J1-6 (UP) - J1-1 (GND) L - W-B Power window motor up input Ignition switch ON, power window regulator switch off 11 to 14 V
      J1-6 (UP) - J1-1 (GND) L - W-B Power window motor up input Ignition switch ON, power window regulator switch up Below 1 V
      J1-8 (AUTO) - J1-1 (GND) P - W-B Power window motor auto up or down input Ignition switch ON, door glass fully open 11 to 14 V
      J1-8 (AUTO) - J1-1 (GND) P - W-B Power window motor auto up or down input Ignition switch ON, power window auto up or down function operating Below 1 V
      J1-8 (AUTO) - J1-1 (GND) P - W-B Power window motor auto up or down input Ignition switch ON, door glass fully closed 11 to 14 V
      J1-4 (LED) - J1-1 (GND) V - W-B LED illumination signal Ignition switch ON 11 to 14 V
      J1-4 (LED) - J1-1 (GND) V - W-B LED illumination signal Approximately 43 seconds after the ignition switch is turned off Below 1 V
      J1-7 (DOWN) - J1-1 (GND) B - W-B Power window motor down input Ignition switch ON, power window regulator switch off 11 to 14 V
      J1-7 (DOWN) - J1-1 (GND) B - W-B Power window motor down input Ignition switch ON, power window regulator switch down Below 1 V
      for RHD:
      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      K10-6 (UP) - K10-1 (GND) L - W-B Power window motor up input Ignition switch ON, power window regulator switch off 11 to 14 V
      K10-6 (UP) - K10-1 (GND) L - W-B Power window motor up input Ignition switch ON, power window regulator switch up Below 1 V
      K10-8 (AUTO) - K10-1 (GND) P - W-B Power window motor auto up or down input Ignition switch ON, door glass fully open 11 to 14 V
      K10-8 (AUTO) - K10-1 (GND) P - W-B Power window motor auto up or down input Ignition switch ON, power window auto up or down function operating Below 1 V
      K10-8 (AUTO) - K10-1 (GND) P - W-B Power window motor auto up or down input Ignition switch ON, door glass fully closed 11 to 14 V
      K10-4 (LED) - K10-1 (GND) V - W-B LED illumination signal Ignition switch ON 11 to 14 V
      K10-4 (LED) - K10-1 (GND) V - W-B LED illumination signal Approximately 43 seconds after the ignition switch is turned off Below 1 V
      K10-7 (DOWN) - K10-1 (GND) B - W-B Power window motor down input Ignition switch ON, power window regulator switch off 11 to 14 V
      K10-7 (DOWN) - K10-1 (GND) B - W-B Power window motor down input Ignition switch ON, power window regulator switch down Below 1 V

      If the result is not as specified, the power window regulator switch may have a malfunction.

  3. CHECK REAR POWER WINDOW REGULATOR SWITCH ASSEMBLY LH (for 5 Door)

    A00958AE02

    1. Disconnect the M2 rear power window regulator switch connector.

    2. 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.

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      M2-1 (GND) - 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 M2 rear power window regulator switch connector.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      M2-6 (UP) - M2-1 (GND) L - W-B Power window motor up input Ignition switch ON, power window regulator switch off 11 to 14 V
      M2-6 (UP) - M2-1 (GND) L - W-B Power window motor up input Ignition switch ON, power window regulator switch up Below 1 V
      M2-8 (AUTO) - M2-1 (GND) P - W-B Power window motor auto up or down input Ignition switch ON, door glass fully open 11 to 14 V
      M2-8 (AUTO) - M2-1 (GND) P - W-B Power window motor auto up or down input Ignition switch ON, power window auto up or down function operating Below 1 V
      M2-8 (AUTO) - M2-1 (GND) P - W-B Power window motor auto up or down input Ignition switch ON, door glass fully closed 11 to 14 V
      M2-4 (LED) - M2-1 (GND) V - W-B LED illumination signal Ignition switch ON 11 to 14 V
      M2-4 (LED) - M2-1 (GND) V - W-B LED illumination signal Approximately 43 seconds after the ignition switch is turned off Below 1 V
      M2-7 (DOWN) - M2-1 (GND) B - W-B Power window motor down input Ignition switch ON, power window regulator switch off 11 to 14 V
      M2-7 (DOWN) - M2-1 (GND) B - W-B Power window motor down input Ignition switch ON, power window regulator switch down Below 1 V

      If the result is not as specified, the power window regulator switch may have a malfunction.

  4. CHECK REAR POWER WINDOW REGULATOR SWITCH ASSEMBLY RH (for 5 Door)

    A00958AE03

    1. Disconnect the L2 rear power window regulator switch connector.

    2. 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.

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      L2-1 (GND) - 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 L2 rear power window regulator switch connector.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      L2-6 (UP) - L2-1 (GND) L - W-B Power window motor up input Ignition switch ON, power window regulator switch off 11 to 14 V
      L2-6 (UP) - L2-1 (GND) L - W-B Power window motor up input Ignition switch ON, power window regulator switch up Below 1 V
      L2-8 (AUTO) - L2-1 (GND) P - W-B Power window motor auto up or down input Ignition switch ON, door glass fully open 11 to 14 V
      L2-8 (AUTO) - L2-1 (GND) P - W-B Power window motor auto up or down input Ignition switch ON, power window auto up or down function operating Below 1 V
      L2-8 (AUTO) - L2-1 (GND) P - W-B Power window motor auto up or down input Ignition switch ON, door glass fully closed 11 to 14 V
      L2-4 (LED) - L2-1 (GND) V - W-B LED illumination signal Ignition switch ON 11 to 14 V
      L2-4 (LED) - L2-1 (GND) V - W-B LED illumination signal Approximately 43 seconds after the ignition switch is turned off Below 1 V
      L2-7 (DOWN) - L2-1 (GND) B - W-B Power window motor down input Ignition switch ON, power window regulator switch off 11 to 14 V
      L2-7 (DOWN) - L2-1 (GND) B - W-B Power window motor down input Ignition switch ON, power window regulator switch down Below 1 V

      If the result is not as specified, the rear power window regulator switch may have a malfunction.

  5. CHECK FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY LH

    A00963HE05

    • *1: for LHD

    • *2: for RHD


    1. Disconnect the K7 power window regulator motor 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.

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      K7-1 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω
      K7-2 (B) - Body ground*1

      R - Body ground*1

      G - Body ground*2

      		 Battery power supply Always 11 to 14 V

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

    3. Reconnect the K7 power window regulator motor connector.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      K7-5 (LED) - K7-1 (GND) V - W-B LED illumination signal Ignition switch ON 11 to 14 V
      K7-5 (LED) - K7-1 (GND) V - W-B LED illumination signal Approximately 43 seconds after ignition switch turned off Below 1 V
      K7-7 (DOWN) - K7-1 (GND) B - W-B Power window motor down output Ignition switch ON, power window regulator master switch off 11 to 14 V
      K7-7 (DOWN) - K7-1 (GND) B - W-B Power window motor down output Ignition switch ON, power window regulator master switch down Below 1 V
      K7-7 (DOWN) - K7-1 (GND) B - W-B Power window motor down output Ignition switch ON, door glass fully closed 11 to 14 V
      K7-7 (DOWN) - K7-1 (GND) B - W-B Power window motor down output Ignition switch ON, power window auto down function operating Below 1 V
      K7-7 (DOWN) - K7-1 (GND) B - W-B Power window motor down output Ignition switch ON, door glass fully open 11 to 14 V
      K7-10 (UP) - K7-1 (GND)

      P - W-B*1

      L - W-B*2

      		 Power window motor up output Ignition switch ON, power window regulator master switch off 11 to 14 V
      K7-10 (UP) - K7-1 (GND)

      P - W-B*1

      L - W-B*2

      		 Power window motor up output Ignition switch ON, power window regulator master switch up Below 1 V
      K7-10 (UP) - K7-1 (GND)

      P - W-B*1

      L - W-B*2

      		 Power window motor up output Ignition switch ON, door glass fully open 11 to 14 V
      K7-10 (UP) - K7-1 (GND)

      P - W-B*1

      L - W-B*2

      		 Power window motor up output Ignition switch ON, power window auto up function operating Below 1 V
      K7-10 (UP) - K7-1 (GND)

      P - W-B*1

      L - W-B*2

      		 Power window motor up output Ignition switch ON, door glass fully closed 11 to 14 V

      If the result is not as specified, the power window regulator motor may have a malfunction.

  6. CHECK FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY RH

    A00963HE07

    • *1: for LHD

    • *2: for RHD


    1. Disconnect the J7 power window regulator motor 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.

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      J7-1 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω
      J7-2 (B) - Body ground

      G - Body ground*1

      R - Body ground*2

      		 Battery power supply Always 11 to 14 V

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

    3. Reconnect the J7 power window regulator motor connector.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      J7-5 (LED) - J7-1 (GND) V - W-B LED illumination signal Ignition switch ON 11 to 14 V
      J7-5 (LED) - J7-1 (GND) V - W-B LED illumination signal Approximately 43 seconds after ignition switch turned off Below 1 V
      J7-7 (DOWN) - J7-1 (GND) B - W-B Power window motor down output Ignition switch ON, power window regulator switch off 11 to 14 V
      J7-7 (DOWN) - J7-1 (GND) B - W-B Power window motor down output Ignition switch ON, power window regulator switch down Below 1 V
      J7-7 (DOWN) - J7-1 (GND) B - W-B Power window motor down output Ignition switch ON, door glass fully closed 11 to 14 V
      J7-7 (DOWN) - J7-1 (GND) B - W-B Power window motor down output Ignition switch ON, power window auto down function operating Below 1 V
      J7-7 (DOWN) - J7-1 (GND) B - W-B Power window motor down output Ignition switch ON, door glass fully open 11 to 14 V
      J7-10 (UP) - J7-1 (GND)

      L - W-B*1

      P - W-B*2

      		 Power window motor up output Ignition switch ON, power window regulator switch off 11 to 14 V
      J7-10 (UP) - J7-1 (GND)

      L - W-B*1

      P - W-B*2

      		 Power window motor up output Ignition switch ON, power window regulator switch up Below 1 V
      J7-10 (UP) - J7-1 (GND)

      L - W-B*1

      P - W-B*2

      		 Power window motor up output Ignition switch ON, door glass fully open 11 to 14 V
      J7-10 (UP) - J7-1 (GND)

      L - W-B*1

      P - W-B*2

      		 Power window motor up output Ignition switch ON, power window auto up function operating Below 1 V
      J7-10 (UP) - J7-1 (GND)

      L - W-B*1

      P - W-B*2

      		 Power window motor up output Ignition switch ON, door glass fully closed 11 to 14 V

      If the result is not as specified, the power window regulator motor may have a malfunction.

  7. CHECK REAR POWER WINDOW REGULATOR MOTOR ASSEMBLY LH (for 5 Door)

    A00963HE06

    1. Disconnect the M4 rear power window regulator motor 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.

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      M4-1 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω
      M4-2 (B) - Body ground W - Body ground Battery power supply Always 11 to 14 V

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

    3. Reconnect the M4 rear power window regulator motor connector.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      M4-5 (LED) - M4-1 (GND) V - W-B LED illumination signal Ignition switch ON 11 to 14 V
      M4-5 (LED) - M4-1 (GND) V - W-B LED illumination signal Approximately 43 seconds after ignition switch turned off Below 1 V
      M4-7 (DOWN) - M4-1 (GND) B - W-B Power window motor down input Ignition switch ON, power window regulator switch off 11 to 14 V
      M4-7 (DOWN) - M4-1 (GND) B - W-B Power window motor down input Ignition switch ON, power window regulator switch down Below 1 V
      M4-7 (DOWN) - M4-1 (GND) B - W-B Power window motor down input Ignition switch ON, door glass fully closed 11 to 14 V
      M4-7 (DOWN) - M4-1 (GND) B - W-B Power window motor down input Ignition switch ON, power window auto down function operating Below 1 V
      M4-7 (DOWN) - M4-1 (GND) B - W-B Power window motor down input Ignition switch ON, door glass fully open 11 to 14 V
      M4-10 (UP) - M4-1 (GND) L - W-B Power window motor up output Ignition switch ON, power window regulator switch off 11 to 14 V
      M4-10 (UP) - M4-1 (GND) L - W-B Power window motor up output Ignition switch ON, power window regulator switch up Below 1 V
      M4-10 (UP) - M4-1 (GND) L - W-B Power window motor up output Ignition switch ON, door glass fully open 11 to 14 V
      M4-10 (UP) - M4-1 (GND) L - W-B Power window motor up output Ignition switch ON, power window auto up function operating Below 1 V
      M4-10 (UP) - M4-1 (GND) L - W-B Power window motor up output Ignition switch ON, door glass fully closed 11 to 14 V

      If the result is not as specified, the rear power window regulator motor may have a malfunction.

  8. CHECK REAR POWER WINDOW REGULATOR MOTOR ASSEMBLY RH (for 5 Door)

    A00963HE08

    1. Disconnect the L4 rear window regulator motor 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.

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      L4-1 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω
      L4-2 (B) - Body ground W - Body ground Battery power supply Always 11 to 14 V

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

    3. Reconnect the L4 rear power window regulator motor connector.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      L4-5 (LED) - L4-1 (GND) V - W-B LED illumination signal Ignition switch ON 11 to 14 V
      L4-5 (LED) - L4-1 (GND) V - W-B LED illumination signal Approximately 43 seconds after ignition switch turned off Below 1 V
      L4-7 (DOWN) - L4-1 (GND) B - W-B Power window motor down output Ignition switch ON, power window regulator switch off 11 to 14 V
      L4-7 (DOWN) - L4-1 (GND) B - W-B Power window motor down output Ignition switch ON, power window regulator switch down Below 1 V
      L4-7 (DOWN) - L4-1 (GND) B - W-B Power window motor down output Ignition switch ON, door glass fully closed 11 to 14 V
      L4-7 (DOWN) - L4-1 (GND) B - W-B Power window motor down output Ignition switch ON, power window auto down function operating Below 1 V
      L4-7 (DOWN) - L4-1 (GND) B - W-B Power window motor down output Ignition switch ON, door glass fully open 11 to 14 V
      L4-10 (UP) - L4-1 (GND) L - W-B Power window motor up output Ignition switch ON, power window regulator switch off 11 to 14 V
      L4-10 (UP) - L4-1 (GND) L - W-B Power window motor up output Ignition switch ON, power window regulator switch up Below 1 V
      L4-10 (UP) - L4-1 (GND) L - W-B Power window motor up output Ignition switch ON, door glass fully open 11 to 14 V
      L4-10 (UP) - L4-1 (GND) L - W-B Power window motor up output Ignition switch ON, power window auto up function operating Below 1 V
      L4-10 (UP) - L4-1 (GND) L - W-B Power window motor up output Ignition switch ON, door glass fully closed 11 to 14 V

      If the result is not as specified, the rear power window regulator motor may have a malfunction.

  9. CHECK DRIVER SIDE JUNCTION BLOCK ASSEMBLY AND MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

    A0099Y4E06
    Text in Illustration
    *A for LHD *B for RHD

    1. Remove the main body ECU (multiplex network body ECU) Click here.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      A-30 (BECU) - Body ground - Battery power supply Always 11 to 14 V
      A-31 (ALTB) - Body ground - Battery power supply Always 11 to 14 V
      A-32 (IG) - Body ground - Ignition switch power supply Ignition switch ON 11 to 14 V
      A-32 (IG) - Body ground - Ignition switch power supply Ignition switch off Below 1 V
      A-29 (ACC) - Body ground - ACC power supply Ignition switch ACC 11 to 14 V
      A-29 (ACC) - Body ground - ACC power supply Ignition switch off Below 1 V
      A-11 (GND1) - Body ground - Ground Always Below 1 Ω
      G63-3 (GND2) - 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. Install the main body ECU (multiplex network body ECU).

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

      for LHD:
      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      2I-27 (FLCY) - Body ground R - Body ground Front door LH courtesy switch input Front door LH open Below 1 V
      2I-27 (FLCY) - Body ground R - Body ground Front door LH courtesy switch input Front door LH closed 11 to 14 V
      2D-15 (FRCY) - Body ground B - Body ground Front door RH courtesy switch input Front door RH open Below 1 V
      2D-15 (FRCY) - Body ground B - Body ground Front door RH courtesy switch input Front door RH closed 11 to 14 V
      for RHD:
      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      2D-31 (FLCY) - Body ground R - Body ground Front door LH courtesy switch input Front door LH open Below 1 V
      2D-31 (FLCY) - Body ground R - Body ground Front door LH courtesy switch input Front door LH closed 11 to 14 V
      2H-26 (FRCY) - Body ground B - Body ground Front door RH courtesy switch input Front door RH open Below 1 V
      2H-26 (FRCY) - Body ground B - Body ground Front door RH courtesy switch input Front door RH closed 11 to 14 V

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