Theft Deterrent System Terminals Of Ecu

Vehicle Interior. Corolla. Zre142 Aze141
Theft Deterrent Keyless Entry. Corolla. Zre142 Aze141

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

  1. CHECK THEFT WARNING ECU ASSEMBLY

Theft Deterrent System -- Terminals Of Ecu



CHECK MAIN BODY ECU (INSTRUMENT PANEL JUNCTION BLOCK)


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


    Corolla. Zre142 Aze141.Theft Deterrent Keyless Entry.Smart Key System (For Entry Function).Theft Deterrent System Terminals Of Ecu


    Corolla. Zre142 Aze141.Theft Deterrent Keyless Entry.Smart Key System (For Entry Function).Theft Deterrent 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
    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
    2B-30 (BECU) - Body ground
    		W - Body ground
    		+B power supply
    		Always
    		11 to 14 V
    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
    2E-20 (PCTY) - Body ground
    		BR - Body ground
    		Passenger side courtesy light switch input
    		Passenger side door CLOSED (OFF) → OPEN (ON)
    		10 kΩ or higher → Below 1 Ω
    2F-5 (ACC) - Body ground
    		L - Body ground
    		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
    2E-17 (GND1) - Body ground
    		W-B - Body ground
    		Ground
    		Always
    		Below 1 Ω
    E61-13 (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
    HINT:
    If the result is not as specified, there may be a malfunction on the wire harness side.

CHECK THEFT WARNING ECU ASSEMBLY


  1. Disconnect the E110 theft warning ECU assembly connector.


    Corolla. Zre142 Aze141.Theft Deterrent Keyless Entry.Smart Key System (For Entry Function).Theft Deterrent System Terminals Of Ecu

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

    Tester Connection
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    E110-7 (KSW) - E110-16 (E)
    		L - W-B
    		Unlock warning switch input
    		No key in ignition key cylinder (OFF) → Key inserted (ON)
    		10 kΩ or higher → Below 1 Ω
    E110-9 (IG) - E110-16 (E)
    		L -W-B
    		Ignition power supply (IG signal)
    		Ignition switch ON → off
    		11 to 14 V → Below 1 V
    E110-11 (+B1) - E110-16 (E)
    		R - W-B
    		+B power supply
    		Always
    		11 to 14 V
    E110-16 (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 E110 theft warning ECU assembly connector.

  4. Measure the voltage between each terminal of the connector.

    Tester Connection
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    E110-24 (BRK+) - E110-16 (E)
    		LG - W-B
    		Alarm BERKES communication
    		Theft deterrent system is in alarm sounding state
    		Pulse generation
    (1.5 V ← → Below 1.2 V)
    E110-25 (BRK-) - E110-16 (E)
    		W - W-B
    		Alarm BERKES communication
    		All doors are locked using key (Theft deterrent system is in arming preparation state.)
    		Pulse generation
    (1.5 V ← → Below 1.2 V)
    E110-29 (IND) - E110-16 (E)
    		Y - W-B
    		Security indicator output
    		Security indicator light assembly in on (It comes on only in arming preparation state or alarm sounding state. It flashes when immobiliser is operating.)
    		3 to 6 V
    E110-3 (GBS) - E110-16 (E)
    		BE - W-B
    		Glass breakage sensor ECU communication
    		Armed state → Alarm sounds (on glass breakage detection)
    		Below 1 V → Pulse generation