POWER DOOR LOCK CONTROL SYSTEM > All Doors LOCK/UNLOCK Functions do not Operate Via Door Control Switch

for Preparation Click here


DESCRIPTION

The main body ECU (multiplex network body ECU) receives switch signals from the door control switch and activates the door lock motor on each door according to these signals.

WIRING DIAGRAM


B219490E13


INSPECTION PROCEDURE

1.READ VALUE USING INTELLIGENT TESTER (DOOR CONTROL SWITCH)

  1. Connect the intelligent tester to the DLC3.

  1. Turn the power switch on (IG).

  1. Turn the intelligent tester on.

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

  1. Read the Data List according to the display on the intelligent tester.

    Main Body (Main Body ECU (Multiplex Network Body ECU)) 
    Tester Display
    		Measurement Item/Range
    		Normal Condition
    		Diagnostic Note
    Door Lock SW-Lock
    		Front passenger door control switch lock signal/ON or OFF
    		ON: Lock side of front passenger door control switch pushed
    OFF: Lock side of front passenger door control switch not pushed
    		-
    Door Lock SW-Unlock
    		Front passenger door control switch unlock signal/ON or OFF
    		ON: Unlock side of front passenger door control switch pushed
    OFF: Unlock side of front passenger door control switch not pushed
    		-

    OK:
    The intelligent tester indicates ON or OFF according to the switch operation shown in the table.



NG
Go to step 2
OK

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) (Click here)  

2.INSPECT DOOR CONTROL SWITCH ASSEMBLY


    B220755E09

  1. Remove the door control switch (Click here).

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

    Standard Resistance:
    Tester Connection
    		Switch Condition
    		Specified Condition
    4 (L) - 3 (E)
    		Locked
    		Below 1 Ω
    4 (L) - 3 (E)
    		off
    		10 kΩ or higher
    2 (UL) - 3 (E)
    		Unlocked
    		Below 1 Ω
    2 (UL) - 3 (E)
    		off
    		10 kΩ or higher

    Text in Illustration 
    *a
    		Component without harness connected
    (Door Control Switch)
    *b
    		Unlock
    *c
    		Lock



NG
REPLACE DOOR CONTROL SWITCH ASSEMBLY (Click here)
OK


3.CHECK HARNESS AND CONNECTOR (DOOR CONTROL SWITCH - MAIN BODY ECU AND BODY GROUND)

  1. Disconnect the main body ECU (multiplex network body ECU) connector.

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

    Standard Resistance:
    for LHD 
    Tester Connection
    		Condition
    		Specified Condition
    J7-2 (UL) - H16-10 (+B1)
    		Always
    		Below 1 Ω
    J7-4 (L) - H16-9 (L1)
    		Always
    		Below 1 Ω
    J7-3 (E) - Body ground
    		Always
    		Below 1 Ω
    J7-2 (UL) - Body ground
    		Always
    		10 kΩ or higher
    J7-4 (L) - Body ground
    		Always
    		10 kΩ or higher
    for RHD 
    Tester Connection
    		Condition
    		Specified Condition
    K9-2 (UL) - H16-10 (+B1)
    		Always
    		Below 1 Ω
    K9-4 (L) - H16-9 (L1)
    		Always
    		Below 1 Ω
    K9-3 (E) - Body ground
    		Always
    		Below 1 Ω
    K9-2 (UL) - Body ground
    		Always
    		10 kΩ or higher
    K9-4 (L) - Body ground
    		Always
    		10 kΩ or higher



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) (Click here)