ELECTRIC POWER CONTROL SYSTEM TERMINALS OF ECU


  1. CHECK ELECTRIC POWER CONTROL ECU (PASSENGER SIDE JUNCTION BLOCK)

    A001AMXE03
    *1 PJ
    *2 PA

    1. Disconnect the PA, PM, PK and A69 ECU connectors.

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

      Terminal No. (Symbols) Wiring Color Terminal Description Condition Specified Condition
      PA-39 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω
      A69-8 (VB-) - Body ground W-B - Body ground Voltage detection (-) Always Below 1 Ω
      PM-1 (BECU) - Body ground L - Body ground ECU power supply Always 11 to 14 V
      PM-1 (BCUT) - Body ground L - Body ground Power cut linked power (input) Always 11 to 14 V
      A69-18 (VB+) - Body ground BE - Body ground Voltage detection (+) Always 11 to 14 V
      PK-1 (IG) - Body ground G - Body ground IG power supply Engine 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 PA, PM, PK and A69 ECU connectors.

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

      Terminal No. (Symbols) Wiring Color Terminal Description Condition Specified Condition
      A69-12 (STSW) - PA-39 (GND) B - W-B Starter switch signal Engine switch on (IG) → Engine cranking Below 1 V → 8 to 14 V
      A69-6 (VC) - PA-39 (GND) B - W-B Sensor power supply Engine switch on (IG) 4.5 to 5.5 V
      A69-9 (IB) - PA-39 (GND) L - W-B Battery current detection Engine switch on (IG) 0.5 to 4.5 V
      A69-10 (E2) - PA-39 (GND) W - W-B Sensor ground Engine switch on (IG) Below 1 Ω
      A69-20 (THB) - PA-39 (GND) P - W-B Battery temperature detection Engine switch on (IG) 0.5 to 4.5 V

      PA-57 (CUTD) - PA-39 (GND)

      PA-35 (CUTD) - PA-39 (GND)

      B - W-B

      B - W-B

      		 Power cut linked power (output) Engine switch on (IG) 11 to 14 V

      • If the result is not as specified, the ECU may have a malfunction.