LEMON Manuals: Even more car manuals for everyone
Home >> Lexus >> 2017 >> CT 200h Base >> Repair and Diagnosis (Single Page) >> Body & Frame >> Seats >> Front Power Seat Control System (W/ Memory) (Diagnostics & Symptom Tests) >> FRONT POWER SEAT CONTROL SYSTEM (w/ Memory) >> Terminals Of Position Control Ecu And Switch Assembly [08/2014 - ] >> Terminals Of Position Control Ecu And Switch Assembly [08/2014 - ]

Terminals Of Position Control Ecu And Switch Assembly [08/2014 - ]

  1. CHECK POSITION CONTROL ECU AND SWITCH ASSEMBLY 
    Fig 1: Position Control ECU & Switch Assembly Connector Terminal Identification
    GTY535923Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the X4 and X5 connectors from the position control ECU and switch assembly.
    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
      X4-2 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω
      X4-7 (+B) - X4-2 (GND) W - W-B Power source Power switch off 11 to 14 V
      X5-12 (SYSB) - X4-2 (GND) P - W-B System power source Power switch off 11 to 14 V
      X5-3 (IG) - X4-2 (GND) G - W-B Ignition power source Power switch off Below 1 V
      Power switch on (IG) 11 to 14 V

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

    3. Reconnect the X4 and X5 connectors to the position control ECU and switch assembly.
    4. Measure the voltage and resistance according to the value(s) in the table below.
      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      X4-6 (+B2) - X4-1 (GND2) SB - W-B Lumbar support adjuster power source Power switch off 11 to 14 V
      X4-1 (GND2) - Body ground W-B - Body ground Lumbar support adjuster ground Always Below 1 Ω
      X4-3 (SLD+) - X4-2 (GND) L - W-B Sliding motor signal (forward) Slide switch off Below 1 V
      Slide switch on (Forward) 11 to 14 V
      X4-4 (SLD-) - X4-2 (GND) GR - W-B Sliding motor signal (rearward) Slide switch off Below 1 V
      Slide switch on (Rearward) 11 to 14 V
      X4-5 (FRV-) - X4-2 (GND) R - W-B Front vertical motor signal (downward) Front vertical switch off Below 1 V
      Front vertical switch on (Downward) 11 to 14 V
      X4-8 (FRV+) - X4-2 (GND) B - W-B Front vertical motor signal (upward) Front vertical switch off Below 1 V
      Front vertical switch on (Upward) 11 to 14 V
      X4-9 (RCL+) - X4-2 (GND) P - W-B Reclining motor signal (forward) Reclining switch off Below 1 V
      Reclining switch on (Forward) 11 to 14 V
      X4-11 (RCL-) - X4-2 (GND) LG - W-B Reclining motor signal (rearward) Reclining switch off Below 1 V
      Reclining switch on (Rearward) 11 to 14 V
      X4-10 (LFT+) - X4-2 (GND) V - W-B Lifter motor signal (upward) Lifter switch off Below 1 V
      Lifter switch on (Upward) 11 to 14 V
      X4-12 (LFT-) - X4-2 (GND) G - W-B Lifter motor signal (downward) Lifter switch off Below 1 V
      Lifter switch on (Downward) 11 to 14 V

      If the result is not as specified, the position control ECU and switch assembly may have a malfunction.

  2. CHECK OUTER MIRROR CONTROL ECU ASSEMBLY (for Driver Side) 
    Fig 2: Outer Mirror Control ECU Assembly (For Driver Side) Connector Terminal Identification
    GTY530780Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the K7 connector from the outer mirror control ECU assembly (for driver side).
    2. Measure the voltage and resistance according to the value(s) in the table below.
      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      K7-7 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω
      K7-14 (BDR) - K7-7 (GND) L - W-B Power source Power switch off 11 to 14 V
      K7-5 (SIG) - K7-7 (GND) Y - W-B Power source (IG) Power switch off Below 1 V
      Power switch on (IG) 11 to 14 V
      K7-6 (CPUB) - K7-7 (GND) LG - W-B Power source Power switch off 11 to 14 V

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

    3. Reconnect the K7 connector to the outer mirror control ECU assembly (for driver side).
    4. Measure the voltage according to the value(s) in the table below.
      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      K7-4 (M3) - K7-13 (MSWE) G - W M3 switch signal for seat memory switch M3 switch on Below 1 V
      M3 switch off 11 to 14 V
      K7-3 (M2) - K7-13 (MSWE) L - W M2 switch signal for seat memory switch M2 switch on Below 1 V
      M2 switch off 11 to 14 V
      K7-2 (M1) - K7-13 (MSWE) R - W M1 switch signal for seat memory switch M1 switch on Below 1 V
      M1 switch off 11 to 14 V
      K7-1 (MM) - K7-13 (MSWE) SB - W SET switch signal for seat memory switch SET switch on Below 1 V
      SET switch off 11 to 14 V

      If the result is not as specified, the outer mirror control ECU assembly (for driver side) may have a malfunction.

  3. CHECK MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) 
    Fig 3: Main Body ECU (Multiplex Network Body ECU) Connector End Views
    GTY528953Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the 2C, 2E and 2B connectors from the instrument panel junction block assembly.
    2. Measure the voltage and resistance according to the value(s) in the table below.
      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      2C-18 - Body ground B - Body ground Power source Power switch off 11 to 14 V
      2E-1 - Body ground W - Body ground Power source Power switch off 11 to 14 V
      2B-6 - Body ground W-B - Body ground Body ground Always Below 1 Ω

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

    3. Reconnect the 2C, 2E and 2B instrument panel junction block assembly connectors.
    4. Measure the voltage according to the value(s) in the table below.
      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      2D-35 (FLCY) - Body ground BR - Body ground Front door courtesy light switch assembly signal Driver door closed 11 to 14 V
      Driver door open Below 1 V
scientia non olet · About LEMON Manuals