WIRELESS DOOR LOCK CONTROL SYSTEM > TERMINALS OF ECU

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INSTRUMENT PANEL JUNCTION BLOCK (MULTIPLEX NETWORK BODY ECU)

B110070E03

  1. Disconnect the instrument panel J/B and multiplex network body ECU connectors.

  2. Check the voltage or resistance according to the value(s) in the table below (wire harness side connector).

    Symbols (Terminal No.)
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    BATB (1A-1) - Body ground
    		B - Body ground
    		+B (power system, generator system) power supply
    		Always
    		10 to 14 V
    BECU (1D-10) - Body ground
    		W - Body ground
    		+B (BECU) power supply
    		Always
    		10 to 14 V
    ALTB (1D-16) - Body ground
    		W (LHD), R-Y (RHD) - Body ground
    		+B (power system, generator system) power supply
    		Always
    		10 to 14 V
    GND1 (1F-10) - Body ground
    		W-B - Body ground
    		Ground
    		Always
    		Below 1 Ω
    GND2 (1M-9) - Body ground
    		W-B - Body ground
    		Ground
    		Always
    		Below 1 Ω
    LCTY (1O-7) - Body ground
    		B - Body ground
    		Rear courtesy light switch LH input
    		Rear door LH closed → opened
    		10 kΩ or higher → Below 1 Ω
    DCTY (B5-14) - Body ground
    		L - Body ground
    		Driver side courtesy light switch input
    		Driver side door closed → opened
    		10 kΩ or higher → Below 1 Ω
    RCTY (B5-16) - Body ground
    		GR - Body ground
    		Rear courtesy light switch RH input
    		Rear door RH closed → opened
    		10 kΩ or higher → Below 1 Ω
    KSW (B6-21) - Body ground
    		B - Body ground
    		Unlock warning switch input
    		No key in ignition key cylinder → key inserted
    		10 kΩ or higher → Below 1 Ω
    PCTY (B7-23) - Body ground
    		L - Body ground
    		Passenger side courtesy light switch input
    		Passenger side door closed → opened
    		10 kΩ or higher → Below 1 Ω
    BCTY (B7-25) - Body ground
    		P - Body ground
    		Back door courtesy light switch input
    		Back door closed → opened
    		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.

  3. Reconnect the instrument panel J/B and multiplex network body ECU connectors.

  4. Check the voltage according to the value(s) in the table below (ECU side connector).

    Symbols (Terminal No.)
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    BZR (B4-2) - Body ground
    		W - Body ground
    		Wireless door lock buzzer
    		Wireless door lock buzzer OFF → ON
    		0 V → Pulse generation
    HAZ (B6-2) - Body ground
    		Y - Body ground
    		Hazard warning light signal
    		Answer-back OFF → answer-back ON
    		10 to 14 V → Pulse generation
    KSW (B6-21) - Body ground
    		B - Body ground
    		Unlock warning switch input
    		No key in the ignition key cylinder → key inserted
    		10 to 14 V → 0 V
    If the result is not as specified, the instrument panel J/B (multiplex network body ECU) may have a malfunction.