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 multiplex network master switch assembly and driver door key cylinder 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 door lock operation Operation Check.

Result:





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

2. CHECK DTC OUTPUT (LIN COMMUNICATION SYSTEM)

(a) Clear the DTC Reading and Clearing Diagnostic Trouble Codes.

(b) Recheck for DTCs.

OK:

DTC B1206 is not output.

NG -- GO TO LIN COMMUNICATION SYSTEM (DTC B1206) B1206
OK -- Continue to next step.

3. REPLACE MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY

(a) Replace the multiplex network master switch assembly Removal.

NEXT -- Continue to next step.

4. CHECK DOOR LOCK OPERATION

(a) Check that all doors can be locked and unlocked by using the multiplex network master switch assembly Operation Check.

OK:

All doors can be locked and unlocked with the multiplex network master switch assembly.

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

OK -- END (MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY WAS DEFECTIVE)

5. READ VALUE USING TECHSTREAM (DOOR KEY-LINKED LOCK AND UNLOCK SWITCH)

(a) Connect the Techstream to the DLC3.

(b) Turn the power switch on (IG).

(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 (Main Body ECU (Multiplex Network Body ECU))





OK:

The Techstream indicates ON or OFF according to the key cylinder operation shown in the table.

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

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

6. INSPECT FRONT DOOR LOCK ASSEMBLY LH (DOOR KEY-LINKED LOCK AND UNLOCK 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.

7. CHECK HARNESS AND CONNECTOR (FRONT DOOR LOCK - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU))

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

(b) 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