Power Door Lock Control System Key Lock-In Prevention Function Does Not Work Properly

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

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

READ VALUE USING TECHSTREAM (UNLOCK WARNING SWITCH AND COURTESY SWITCHES)

INSPECT UNLOCK WARNING SWITCH ASSEMBLY

CHECK HARNESS AND CONNECTOR (UNLOCK WARNING SWITCH - JUNCTION BLOCK)

CHECK HARNESS AND CONNECTOR (UNLOCK WARNING SWITCH - BODY GROUND)

INSPECT FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY (DRIVER SIDE)

CHECK HARNESS AND CONNECTOR (FRONT DOOR COURTESY LIGHT SWITCH - JUNCTION BLOCK)

INSPECT FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY (PASSENGER SIDE)

CHECK HARNESS AND CONNECTOR (FRONT DOOR COURTESY LIGHT SWITCH - JUNCTION BLOCK)

POWER DOOR LOCK CONTROL SYSTEM - Key Lock-in Prevention Function does not Work Properly


DESCRIPTION

When the key is in the ignition key cylinder or the door courtesy switch ON signal is output to the main body ECU (instrument panel junction block), performing the door lock operation with the lock switch does not lock the door.

WIRING DIAGRAM


Corolla. Zre142 Aze141.Door Lock.Power Door Lock Control System.Power Door Lock Control System Key Lock-In Prevention Function Does Not Work Properly


INSPECTION PROCEDURE

1.READ VALUE USING TECHSTREAM (UNLOCK WARNING SWITCH AND COURTESY SWITCHES)

  1. Connect the Techstream

  1. Turn the ignition switch to ON.

  1. Turn the Techstream on.

  1. Enter the following menus: Body Electrical / Main Body / Data List.

  1. Read the Data List according to the display on the Techstream.

    Main Body
    Tester Display
    		Measurement Item/Range
    		Normal Condition
    		Diagnostic Note
    Key Unlock Warning SW
    		Unlock warning switch signal / ON or OFF
    		ON: Key is in ignition key cylinder
    OFF: No key is in ignition key cylinder
    		-
    D Door Courtesy SW
    		Driver side door courtesy light switch signal / ON or OFF
    		ON: Driver side door is open
    OFF: Driver side door is closed
    		-
    P Door Courtesy SW
    		Passenger side door courtesy light switch signal / ON or OFF
    		ON: Passenger side door is open
    OFF: Passenger side door is closed
    		-
    OK:
    The Techstream indicates ON or OFF according to the switch operation as shown in the table above.
    Result:
    Result
    		Proceed to
    OK
    		A
    NG (Unlock Warning Switch)
    		B
    NG (Front Door Courtesy Light Switch (Driver Side))
    		C
    NG (Front Door Courtesy Light Switch (Passenger Side))
    		D


B
Go to step 2

C
Go to step 5

D
Go to step 7
A

REPLACE MAIN BODY ECU (INSTRUMENT PANEL JUNCTION BLOCK)

2.INSPECT UNLOCK WARNING SWITCH ASSEMBLY


    Corolla. Zre142 Aze141.Door Lock.Power Door Lock Control System.Power Door Lock Control System Key Lock-In Prevention Function Does Not Work Properly

  1. Remove the unlock warning switch (COROLLA_ZRE142 RM0000026TU02HX.html).

  1. Measure the resistance according to the value(s) in the table below.

    Standard Resistance:
    Tester Connection
    		Switch Condition
    		Specified Condition
    1 (UN+) - 2 (UN-)
    		Pushed
    		10 kΩ or higher
    1 (UN+) - 2 (UN-)
    		Not pushed
    		Below 1 Ω


NG
REPLACE UNLOCK WARNING SWITCH ASSEMBLY (COROLLA_ZRE142 RM0000026TU02HX.html)
OK


3.CHECK HARNESS AND CONNECTOR (UNLOCK WARNING SWITCH - JUNCTION BLOCK)


    Corolla. Zre142 Aze141.Door Lock.Power Door Lock Control System.Power Door Lock Control System Key Lock-In Prevention Function Does Not Work Properly

  1. Disconnect the 2E junction block connector.

  1. Measure the resistance according to the value(s) in the table below.

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    E5-1 (UN+) - 2E-23 (KSW)
    		Always
    		Below 1 Ω
    E5-1 (UN+) - Body ground
    		Always
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


4.CHECK HARNESS AND CONNECTOR (UNLOCK WARNING SWITCH - BODY GROUND)


    Corolla. Zre142 Aze141.Door Lock.Power Door Lock Control System.Power Door Lock Control System Key Lock-In Prevention Function Does Not Work Properly

  1. Measure the resistance according to the value(s) in the table below.

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    E5-2 (UN-) - Body ground
    		Always
    		Below 1 Ω


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

REPLACE MAIN BODY ECU (INSTRUMENT PANEL JUNCTION BLOCK)

5.INSPECT FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY (DRIVER SIDE)


    Corolla. Zre142 Aze141.Door Lock.Power Door Lock Control System.Power Door Lock Control System Key Lock-In Prevention Function Does Not Work Properly

  1. Remove the front door courtesy light switch (driver side) (COROLLA_ZRE142 RM000002VPS00OX.html).

  1. Measure the resistance according to the value(s) in the table below.

    Standard Resistance:
    Tester Connection
    		Switch Condition
    		Specified Condition
    1 - Switch ground
    		Not pushed (ON)
    		Below 1 Ω
    1 - Switch ground
    		Pushed (OFF)
    		10 kΩ or higher


NG
REPLACE FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY (DRIVER SIDE) (COROLLA_ZRE142 RM000002VPS00OX.html)
OK


6.CHECK HARNESS AND CONNECTOR (FRONT DOOR COURTESY LIGHT SWITCH - JUNCTION BLOCK)


    Corolla. Zre142 Aze141.Door Lock.Power Door Lock Control System.Power Door Lock Control System Key Lock-In Prevention Function Does Not Work Properly

  1. Disconnect the 2A junction block connector.

  1. Measure the resistance according to the value(s) in the table below.

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    L3-1 - 2A-21 (DCTY)
    		Always
    		Below 1 Ω
    L3-1 - Body ground
    		Always
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

REPLACE MAIN BODY ECU (INSTRUMENT PANEL JUNCTION BLOCK)

7.INSPECT FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY (PASSENGER SIDE)


    Corolla. Zre142 Aze141.Door Lock.Power Door Lock Control System.Power Door Lock Control System Key Lock-In Prevention Function Does Not Work Properly

  1. Remove the front door courtesy light switch (passenger side) (COROLLA_ZRE142 RM0000017MQ020X.html).

  1. Measure the resistance according to the value(s) in the table below.

    Standard Resistance:
    Tester Connection
    		Switch Condition
    		Specified Condition
    1 - Switch ground
    		Not pushed (ON)
    		Below 1 Ω
    1 - Switch ground
    		Pushed (OFF)
    		10 kΩ or higher


NG
REPLACE FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY (PASSENGER SIDE) (COROLLA_ZRE142 RM000002VPS00OX.html)
OK


8.CHECK HARNESS AND CONNECTOR (FRONT DOOR COURTESY LIGHT SWITCH - JUNCTION BLOCK)


    Corolla. Zre142 Aze141.Door Lock.Power Door Lock Control System.Power Door Lock Control System Key Lock-In Prevention Function Does Not Work Properly

  1. Disconnect the 2E junction block connector.

  1. Measure the resistance according to the value(s) in the table below.

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    M1-1 - 2E-20 (PCTY)
    		Always
    		Below 1 Ω
    M1-1 - Body ground
    		Always
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

REPLACE MAIN BODY ECU (INSTRUMENT PANEL JUNCTION BLOCK)