Key Reminder Warning System Terminals Of Ecu

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

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

Key Reminder Warning System -- Terminals Of Ecu



CHECK MAIN BODY ECU (INSTRUMENT PANEL JUNCTION BLOCK)


  1. Disconnect the 2A, 2B and 2E junction block connectors.


    Corolla. Zre142 Aze141.Door Lock.Power Door Lock Control System.Key Reminder Warning System Terminals Of Ecu

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

    Tester Connection
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    2E-17 (GND1) - Body ground
    		W-B - Body ground
    		Ground
    		Always
    		Below 1 Ω
    2B-30 (BECU) - Body ground
    		W - Body ground
    		Power Source
    		Always
    		11 to 14 V
    2A-21 (DCTY) - Body ground
    		W - Body ground*1
    V - Body ground*2
    		Driver door courtesy light switch signal
    		Switch pushed (Door closed)
    		10 kΩ or higher
    2A-21 (DCTY) - Body ground
    		W - Body ground*1
    V - Body ground*2
    		Driver door courtesy light switch signal
    		Switch free (Door open)
    		Below 1 Ω
    2E-23 (KSW) - Body ground
    		L - Body ground
    		Key unlock warning switch signal
    		No key is in ignition key cylinder
    		10 kΩ or higher
    2E-23 (KSW) - Body ground
    		L - Body ground
    		Key unlock warning switch signal
    		Key is in ignition key cylinder
    		Below 1 Ω
    1. *1: for TMC Made
    2. *2: Except for TMC made
    If the result is not as specified, there may be a malfunction on the wire harness side.