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Terminals Of Ecu

  1. CHECK AIR CONDITIONING AMPLIFIER 
    Fig 1: Identifying E36 Connector Terminal
    G05636433Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the E36 air conditioning amplifier connector.
    2. Measure the resistance and voltage according to the value (s) in the table below.
      RESISTANCE AND VOLTAGE SPECIFICATION

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      E36-5 (IG+) - E36-1 (GND) G - W-B Ignition power supply Engine switch on (IG) 11 to 14 V
      Engine switch off Below 1 V
      E36-6 (+B1) - E36-1 (GND) R - W-B Battery power source Always 11 to 14 V
      E36-7 (+B2) - E36-1 (GND) R - W-B Battery power source Always 11 to 14 V
      E36-1 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω

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

    3. Reconnect the E36 air conditioning amplifier connector.
    4. Measure the voltage according to the value (s) in the table below.
      VOLTAGE SPECIFICATION

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      E36-24 (RDEF) - E36-1 (GND) G - W-B Defogger relay Engine switch on (IG) and defogger switch off 11 to 14 V
      Engine switch on (IG) and defogger switch on Below 1 V

      If the result is not as specified, the air conditioning amplifier or fuse may have a malfunction.

  2. CHECK DISPLAY AND NAVIGATION MODULE DISPLAY (w/ Navigation System) 
    Fig 2: Identifying F28 Connector Terminal
    G05636435Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the F28 display and navigation module display connector.
    2. Measure the resistance and voltage according to the value (s) in the table below.
      RESISTANCE AND VOLTAGE SPECIFICATION

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      F28-3 (IG) - F28-10 (GND1) G - W-B Ignition power supply Engine switch on (IG) 11 to 14 V
      Engine switch off Below 1 V
      F28-1 (+B1) - F28-10 (GND1) R - W-B Battery power source Always 11 to 14 V
      F28-10 (GND1) - 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.

  3. CHECK MULTI-DISPLAY (w/o Navigation System) 
    Fig 3: Identifying F28 Connector Terminal
    G05636435Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the F28 multi-display connector.
    2. Measure the resistance and voltage according to the value (s) in the table below.
      RESISTANCE AND VOLTAGE SPECIFICATION

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      F28-3 (IG) - F28-10 (GND1) G - W-B Ignition power supply Engine switch on (IG) 11 to 14 V
      Engine switch off Below 1 V
      F28-1 (+B1) - F28-10 (GND1) R - W-B Battery power source Always 11 to 14 V
      F28-10 (GND1) - 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.

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