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Terminals Of Ecu

  1. CHECK INTEGRATION RELAY 
    1. Disconnect the I12 relay connector.
      Fig 1: Identifying Terminals Of ECU
      G05236953Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the resistance according to the value(s) in the table below.

      Standard resistance 

      TERMINAL SPECIFIED CONDITION CHART

      Symbols (Terminal No.) Wiring color Condition Specified Condition
      L1 (I12-9) - Body ground L-W - Body ground with Power window
      Master switch (Manual door lock operation) OFF → LOCK      		 10 kΩ or higher → Below 1 Ω
      L1 (I12-9) - Body ground L-W - Body ground without Power window
      Driver's door control switch (Manual operation) OFF → LOCK      		 10 kΩ or higher → Below 1 Ω
      L1 (I12-9) - Body ground L-W - Body ground Passenger's door control switch (Manual operation) OFF → LOCK 10 kΩ or higher → Below 1 Ω
      L2 (I12-7) - Body ground G - Body ground Key in driver's door key cylinder
      LOCK → Other position      		 Below 1 Ω → 10 kΩ or higher
      L2 (I12-7) - Body ground G - Body ground Key in passenger's door key cylinder
      LOCK → Other position      		 Below 1 Ω → 10 kΩ or higher
      UL1 (I12-8) - Body ground L - Body ground with Power window Master switch
      (Manual door lock operation) OFF → UNLOCK      		 10 kΩ or higher → Below 1 Ω
      UL1 (I12-8) - Body ground L - Body ground without Power window
      Door control switch (Manual operation) OFF → UNLOCK      		 10 kΩ or higher → Below 1 Ω
      UL1 (I12-8) - Body ground L - Body ground Passenger's door control switch
      (Manual operation) OFF → UNLOCK      		 10 kΩ or higher → Below 1 Ω
      UL2 (I12-5) - Body ground L-B - Body ground Key in passenger's door key cylinder
      UNLOCK → Other position      		 Below 1 Ω → 10 kΩ or higher
      UL3 (I12-6) - Body ground L-Y - Body ground Key in driver's door key cylinder
      UNLOCK → Other position      		 Below 1 Ω → 10 kΩ or higher
      LSWD (I12-19) - Body ground W - Body ground Driver's door lock control knob LOCK → UNLOCK 10 kΩ or higher → Below 1 Ω
      LSWP (I12-18) - Body ground W-R - Body ground Front passenger's door lock control knob LOCK → UNLOCK 10 kΩ or higher → Below 1 Ω
      PCTY (I12-13) - Body ground R-W - Body ground Front passenger's door fully closed → Opened 10 kΩ or higher → Below 1 Ω
      GL5 (I12-23) - Body ground L-W - Body ground Glass hatch opener switch OFF → ON 10 kΩ or higher → Below 1 Ω

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

    3. Reconnect the I12 relay connector.
    4. Measure the voltage according to the value(s) in the table below.

      Standard voltage 

      TERMINAL SPECIFIED CONDITION CHART

      Symbols (Terminal No.) Wiring color Condition Specified Condition
      ACTD (I12-1) - Body ground R - Body ground Key in driver's door lock cylinder OFF → LOCK 0 V → 10 to 14 V → Below 1 V
      ACTG (I12-2) - Body ground W - Body ground Glass hatch opener switch OFF → ON 0 V → 10 to 14 V → Below 1 V

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

  2. CHECK INSTRUMENT PANEL J/B (INTEGRATION RELAY) 
    1. Inspect the ID, IF, IH and IJ J/B connectors.
      Fig 2: Identifying Instrument Panel J/B (Integration Relay)
      G05195809Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the resistance according to the value(s) in the table below.

      Standard resistance 

      TERMINAL SPECIFIED CONDITION CHART

      Symbols (Terminal No.) Wiring color Condition Specified Condition
      KSW (IJ-8) - Body ground L-B - Body ground No key in ignition switch lock cylinder → Yes 10 kΩ or higher → Below 1 Ω
      GND (IF-4) - Body ground W-B - Body ground Always Below 1 Ω
      GND (IH-10) - Body ground W-B - Body ground Always Below 1 Ω
      DCTY (ID-1) - Body ground R-W - Body ground Driver's door fully closed → Opened 10 kΩ or higher → Below 1 Ω
      P-DR (ID-14) - Body ground R-B - Body ground Rear LH door fully closed → Opened 10 kΩ or higher → Below 1 Ω
      P-DR (ID-15) - Body ground R-Y - Body ground Rear RH door fully closed → Opened 10 kΩ or higher → Below 1 Ω
      P-DR (ID-16) - Body ground R - Body ground
      • Back door fully closed → Opened
      • Glass hatch fully closed → Opened
      		 10 kΩ or higher → Below 1 Ω

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

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

      Standard voltage 

      TERMINAL SPECIFIED CONDITION CHART

      Symbols (Terminal No.) Wiring color Condition Specified Condition
      IG (IA-1) - Body ground W - Body ground Always 10 to 14 V
      B (IB-1) - Body ground W - Body ground Always 10 to 14 V
      KSW (IJ-8) - Body ground L-B - Body ground No key in ignition switch key cylinder → Yes 10 to 14V → 0V →
      ACT+ (IK-2) - Body ground L - Body ground Key in driver's door lock cylinder OFF → LOCK 0 V → 10 to 14 V → Below 1 V
      ACT+ (ID-9) Body ground L - Body ground Key in driver's door lock cylinder OFF → UNLOCK 0 V → 10 to 14 V → Below 1 V
      ACT- (IK-5) - Body ground R - Body ground Key in driver's door lock cylinder OFF → LOCK 0 V → 10 to 14 V → Below 1 V
      ACT- (ID-20) - Body ground R - Body ground Key in driver's door lock cylinder OFF → UNLOCK 0 V → 10 to 14 V → Below 1 V

      If the result is not as specified, the integration relay or instrument panel J/B may have a malfunction.

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