WIRELESS DOOR LOCK CONTROL SYSTEM (w/ Entry and Start System) > TERMINALS OF ECU

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CHECK MAIN BODY ECU, INSTRUMENT PANEL JUNCTION BLOCK


  1. Remove the main body ECU.


    B210280E01


    Text in Illustration 
    *1
    		Instrument Panel Junction Block

    B210281E02


    Text in Illustration 
    *1
    		Main Body ECU (w/ Theft Deterrent System)

    B210282E02


    Text in Illustration 
    *1
    		Main Body ECU (w/o Theft Deterrent System)

  2. Disconnect the D42 main body ECU connector.

  3. Measure the resistance and voltage between each terminal of the wire harness side connectors and body ground.

    Terminal No. (Symbol)
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    3F-2 (FLCY) - Body ground
    		-
    		Front door courtesy light switch LH input
    		Front door LH CLOSED (off) → OPEN (on)
    		10 kΩ or higher → Below 1 Ω
    3F-4 (FRCY) - Body ground
    		-
    		Front door courtesy light switch RH input
    		Front door RH CLOSED (off) → OPEN (on)
    		10 kΩ or higher → Below 1 Ω
    3F-11 (GND1) - Body ground
    		-
    		Ground
    		Always
    		Below 1 Ω
    3F-29 (ACC) - Body ground
    		-
    		Ignition power supply (ACC signal)
    		Engine switch on (ACC) → off
    		11 to 14 V → Below 1 V
    3F-30 (ECUB) - Body ground
    		-
    		+B (power system signal system) power supply
    		Always
    		11 to 14 V
    3F-31 (ALTB) - Body ground
    		-
    		+B (power system alternator system) power supply
    		Always
    		11 to 14 V
    3F-32 (IG) - Body ground
    		-
    		Ignition power supply (IG signal)
    		Engine switch on (IG) → off
    		11 to 14 V → Below 1 V
    D42-19 (BCTY) - Body ground
    		V - Body ground
    		Back door courtesy light switch input
    		Back door CLOSED (off) → OPEN (on)
    		10 kΩ or higher → Below 1 Ω

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

  4. Reinstall the main body ECU.

  5. Reconnect the main body ECU connector.

  6. Measure the voltage between each terminal of the wire harness side connectors and body ground.

    Terminal No. (Symbol)
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    D42-7 (LSFL) - Body ground
    		R - Body ground
    		Front door unlock detection switch LH input
    		Front door LH UNLOCK → LOCK
    		Below 1 V → 11 to 14 V (or pulse generation)
    D42-18 (LSFR) - Body ground
    		L - Body ground
    		Front door unlock detection switch RH input
    		Front door RH UNLOCK → LOCK
    		Below 1 V → 11 to 14 V (or pulse generation)
    D42-19 (BCTY) - Body ground
    		V - Body ground
    		Back door courtesy light switch input
    		Back door CLOSED (off) → OPEN (on)
    		11 to 14 V (or pulse generation ) → Below 1 V
    D42-3 (HAZ) - Body ground
    		R - Body ground
    		Hazard warning signal switch input
    		Hazard warning signal switch on
    		Below 1 V
    Hazard warning signal switch off
    		Pulse generation
    3E-24 (FLCY) - Body ground
    		G - Body ground
    		Front door courtesy light switch LH input
    		Front door LH CLOSED (off) → OPEN (on)
    		11 to 14 V (or pulse generation ) → Below 1 V
    3E-35 (FRCY) - Body ground
    		B - Body ground
    		Front door courtesy light switch RH input
    		Front door RH CLOSED (off) → OPEN (on)
    		11 to 14 V (or pulse generation ) → Below 1 V
    If the result is not as specified, the main body ECU may have a malfunction.


CHECK CERTIFICATION ECU


  1. Disconnect the D34 certification ECU connector.


    B197893E02

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

    HINT:
    Measure the values on the wire harness side with connector disconnected.


    Terminal No. (Symbol)
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    D34-1 (+B) - D34-15 (E)
    		B - W-B
    		+B power supply
    		Always
    		11 to 14 V
    D34-15 (E) - Body ground
    		W-B - Body ground
    		Ground
    		Always
    		Below 1 Ω
    D34-17 (CUTB) - D34-15 (E)
    		W - W-B
    		+B power supply
    		Always
    		11 to 14 V
    If the result is not as specified, there may be a malfunction in the wire harness.

  3. Reconnect the D34 certification ECU connector.

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

    Terminal No. (Symbol)
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    D35-5 (RCO) - D34-15 (E)
    		L - W-B
    		Entry door control receiver power source
    		Engine switch off, all doors closed and electrical key switch on
    		Pulse generation → 4.5 to 5.5 V
    D35-15 (RDA3) - D34-15 (E)
    		LG - W-B
    		Entry door control receiver data input signal
    		Engine switch off
    		11 to 14 V pulse generation output at regular interval
    D35-16 (RSSI) - D34-15 (E)
    		P - W-B
    		Entry door control receiver electric wave existence signal
    		All door locked, all doors closed and electrical key switch on
    		11 to 14 V → Below 2 V
    If the result is not as specified, the certification ECU may have a malfunction.