Wireless Door Lock Control System (W/ 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)

  1. CHECK CERTIFICATION ECU ASSEMBLY

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



CHECK MAIN BODY ECU (INSTRUMENT PANEL JUNCTION BLOCK)


  1. Disconnect the 2A, 2B, 2C, 2E, 2F and 2G instrument panel junction block connectors and E50 and E51 main body ECU connectors.


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


    Corolla. Zre142 Aze141.Door Lock.Power Door Lock Control System.Wireless Door Lock Control System (W/ 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
    		BE - Body ground
    		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
    		V - Body ground
    		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
    		Y - Body ground
    		Rear courtesy light switch RH input
    		Rear door RH CLOSED (OFF) → OPEN (ON)
    		10 kΩ or higher → Below 1 Ω
    2F-5 (ACC) - Body ground
    		L - Body ground
    		IG supply (ACC signal)
    		Engine switch on (ACC) → off
    		11 to 14 V → Below 1 V
    2G-1 (IG) - Body ground
    		W - Body ground
    		IG supply (IG signal)
    		Engine switch on (IG) → 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
    E50-8 (LCTY) - Body ground
    		B - Body ground
    		Rear courtesy light switch LH input
    		Rear door LH CLOSED (OFF) → OPEN (ON)
    		10 kΩ or higher → Below 1 Ω
    E51-4 (GND2) - 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 main body (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
    		BE - Body ground
    		Turn signal flasher relay signal
    		Transmitter LOCK or UNLOCK switch is pressed → not pressed
    		Below 1 V*1 → 11 to 14 V
    E50-1 (TR+)- Body ground
    		P - Body ground
    		Luggage compartment door opener motor
    		Luggage compartment door CLOSED (LOCKED) → OPEN (UNLOCKED)
    		Below 1 V → 11 to 14 V*2
    1. *1: When operating the answer back function.
    2. *2: When operating the motor.

CHECK CERTIFICATION ECU ASSEMBLY


  1. Disconnect the E36 ECU connector.


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

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

    Tester Connection
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    E36-1 (+B) - E36-17 (E)
    		GR - W-B
    		Battery power supply
    		Always
    		11 to 14 V
    E36-17 (E) - 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 E36 ECU connector.

  4. Measure the voltage of the connector.

    Tester Connection
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    E36-29 (RC0) - E36-17 (E)
    		LG - W-B
    		Door control receiver power supply
    		Engine switch off, all doors closed and transmitter switch not pressed
    		Below 1 V
    E36-29 (RC0) - E36-17 (E)
    		LG - W-B
    		Door control receiver power supply
    		Engine switch off, all doors closed and transmitter switch pressed
    		4.6 to 5.4 V
    E36-38 (RDA) - E36-17 (E)
    		P - W-B
    		Door control receiver input signal
    		Engine switch off, all doors closed and transmitter switch not pressed
    		11 to 14 V pulse generation at regular intervals
    E36-38 (RDA) - E36-17 (E)
    		P - W-B
    		Door control receiver input signal
    		Engine switch off, all doors closed and transmitter switch pressed
    		Pulse generation
    E36-18 (IG) - E36-17 (E)
    		B - W-B
    		IG power supply
    		Engine switch on (IG)
    		11 to 14 V
    E36-18 (IG) - E36-17 (E)
    		B - W-B
    		IG power supply
    		Engine switch off
    		Below 1 V
    If the result is not as specified, the ECU may have a malfunction.