All Doors Lock/Unlock Functions Do Not Operate Via Master Switch, Driver Side Door Key Cylinder

DOOR LOCK: POWER DOOR LOCK CONTROL SYSTEM: All Doors LOCK/UNLOCK Functions do not Operate Via Master Switch, Driver Side Door Key Cylinder
- All Doors LOCK/UNLOCK Functions do not Operate Via Master Switch, Driver Side Door Key Cylinder

DESCRIPTION

The main body ECU (multiplex network body ECU) receives switch signals from the power window regulator master switch assembly (door control switch), and key-linked switch signals from the front door lock assembly LH. The main body ECU (multiplex network body ECU) activates the door lock motor on each door according to these signals.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK DOOR LOCK OPERATION

(a) Check the door lock operation.

Result





B -- READ VALUE USING TECHSTREAM (KEY-LINKED SWITCH)
A -- Continue to next step.

2. INSPECT POWER WINDOW REGULATOR SWITCH ASSEMBLY (DOOR CONTROL SWITCH)

(a) Remove the power window regulator master switch assembly (door control switch) Removal.





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

Standard Resistance:





NG -- REPLACE POWER WINDOW REGULATOR MASTER SWITCH ASSEMBLY Removal
OK -- Continue to next step.

3. CHECK HARNESS AND CONNECTOR (POWER WINDOW REGULATOR MASTER SWITCH - MAIN BODY ECU AND BODY GROUND)

(a) Disconnect the E1 power window regulator master switch assembly (door control switch) connector.

(b) Disconnect the C56 main body ECU (multiplex network body ECU) connector.

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

Standard Resistance:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) Removal

4. READ VALUE USING TECHSTREAM (KEY-LINKED SWITCH)

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / Main body / Data List.

(e) Read the Data List according to the display on the Techstream.

Main Body





OK:

On tester screen, each item changes between ON and OFF according to above chart.

NG -- INSPECT FRONT DOOR LOCK ASSEMBLY LH (KEY-LINKED SWITCH)

OK -- REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) Removal

5. INSPECT FRONT DOOR LOCK ASSEMBLY LH (KEY-LINKED SWITCH)

(a) Remove the front door lock assembly LH Removal.





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

Standard Resistance:





Text in Illustration





NG -- REPLACE FRONT DOOR LOCK ASSEMBLY LH Removal
OK -- Continue to next step.

6. CHECK HARNESS AND CONNECTOR (FRONT DOOR LOCK ASSEMBLY LH - MAIN BODY ECU AND BODY GROUND)

(a) Disconnect the E6 front door lock assembly LH connector.

(b) Disconnect the C56 main body ECU (multiplex network body ECU) connector.

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

Standard Resistance:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) Removal