TIRE PRESSURE WARNING SYSTEM > TERMINALS OF ECU

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CHECK TIRE PRESSURE WARNING ECU AND RECEIVER

F100629E04

  1. Disconnect the E64 ECU connector.

  2. Measure the voltage and resistance of the wire harness side connector.

    Symbols (Terminal No.)
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    IG (E64-1) - GND (E64-9)
    		L - W-B
    		IG power source
    		Ignition switch on (IG)
    		10 to 14 V
    Ignition switch off
    		Below 1 V
    GND (E64-9) - 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 E64 ECU connector.

  4. Measure the voltage of the connector.

    Symbols (Terminal No.)
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    SPD (E64-3) - GND (E64-9)
    		V - W-B
    		Vehicle speed signal
    		Vehicle is running
    		Pulse generation
    SIL (E64-4) - GND (E64-9)
    		W - W-B
    		Diagnosis tester communication line
    		Ignition switch on (IG),
    when communication is not performed with a tester
    		8 to 15 V
    IND (E64-5) - GND (E64-9)
    		P - W-B
    		Tire pressure warning light output signal
    		Ignition switch IG (on),
    tire pressure warning light ON
    		Below 0.5 V
    TC (E64-10) - GND (E64-9)
    		G - W-B
    		TC terminal
    		When terminal TC is not connected
    		8 to 15 V
    If the result is not as specified, the ECU may have a malfunction.