Wireless Door Lock Control System (W/O Smart Key System) Terminals Of Ecu

Vehicle Interior. Corolla. Zre142 Aze141
Door Lock. Corolla. Zre142 Aze141

  1. CHECK MAIN BODY ECU (INSTRUMENT PANEL JUNCTION BLOCK)

Wireless Door Lock Control System (W/O Smart Key System) -- Terminals Of Ecu



CHECK MAIN BODY ECU (INSTRUMENT PANEL JUNCTION BLOCK)


  1. Disconnect the 2A, 2B, 2C, 2E, 2F and 2G junction block connectors and E61 main body ECU connector.


    Corolla. Zre142 Aze141.Door Lock.Power Door Lock Control System.Wireless Door Lock Control System (W/O Smart Key System) Terminals Of Ecu


    Corolla. Zre142 Aze141.Door Lock.Power Door Lock Control System.Wireless Door Lock Control System (W/O Smart Key System) Terminals Of Ecu

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

    Tester Connection
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    2A-7 (LGCY) - Body ground
    		LG - Body ground
    		Luggage compartment door courtesy light switch input
    		Luggage compartment door CLOSED (OFF) → OPEN (ON)
    		10 kΩ or higher → Below 1 Ω
    2E-20 (PCTY) - Body ground
    		BR - Body ground*1
    BE - Body ground*2
    		Passenger side door courtesy light switch input
    		Passenger side door CLOSED (OFF) → OPEN (ON)
    		10 kΩ or higher → Below 1 Ω
    2B-30 (BECU) - Body ground
    		W - Body ground
    		+B power supply
    		Always
    		11 to 14 V
    2A-21 (DCTY) - Body ground
    		W - Body ground*1
    V - Body ground*2
    		Driver side door courtesy light switch input
    		Driver side door CLOSED (OFF) → OPEN (ON)
    		10 kΩ or higher → Below 1 Ω
    2E-17 (GND1) - Body ground
    		W-B - Body ground
    		Ground
    		Always
    		Below 1 Ω
    2E-19 (RCTY) - Body ground
    		LG - Body ground*1
    Y - Body ground*2
    		Rear courtesy light switch RH input
    		Rear door RH CLOSED (OFF) → OPEN (ON)
    		10 kΩ or higher → Below 1 Ω
    2E-23 (KSW) - Body ground
    		L - Body ground
    		Unlock warning switch input
    		No key in ignition key cylinder (OFF) → Key inserted (ON)
    		10 kΩ or higher → Below 1 Ω
    2F-5 (ACC) - Body ground
    		W - Body ground*1
    L - Body ground*2
    		Ignition power supply (ACC signal)
    		Ignition switch ACC → off
    		11 to 14 V → Below 1 V
    2G-1 (IG) - Body ground
    		W - Body ground
    		Ignition power supply (IG signal)
    		Ignition switch ON → off
    		11 to 14 V → Below 1 V
    2G-1 (ALTB) - Body ground
    		W - Body ground
    		+B (power system alternator system) power supply
    		Always
    		11 to 14 V
    E61-13 (LCTY) - Body ground
    		SB - Body ground*1
    B - Body ground*2
    		Rear courtesy light switch LH input
    		Rear door LH CLOSED (OFF) → OPEN (ON)
    		10 kΩ or higher → Below 1 Ω
    If the result is not as specified, there may be a malfunction on the wire harness side.
    1. *1: for TMC Made
    2. *2: Except for TMC made

  3. Reconnect the main body ECU and instrument panel junction block connectors.

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

    Tester Connection
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    2S-17 (HAZ) - Body ground
    		GR - Body ground
    		Turn signal flasher relay signal
    		Transmitter LOCK or UNLOCK switch is pressed → not pressed
    		Below 1 V* → 11 to 14 V
    1. *: When operating the answer back function.