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 RH (cowl side junction block RH) receives switch signals from the multiplex network master switch, and driver side door key cylinder switch signals from the front door lock (driver side). The main body ECU RH (cowl side junction block RH) activates the door lock motor on each door according to these signals.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK DTC OUTPUT (MULTIPLEX COMMUNICATION SYSTEM)

(a) Check for DTC Multiplex Communication System.

OK:

DTC B1206 is not output.

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

2. CHECK FUSE (FR DOOR RH)

(a) Remove the FR DOOR RH fuse from the main body ECU RH (cowl side junction block RH).

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

Standard Resistance:





NG -- REPLACE FUSE (FR DOOR RH FUSE)
OK -- Continue to next step.

3. CHECK DOOR LOCK OPERATION

(a) Check door lock operation Operation Check.

Result:





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

4. REPLACE MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY

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

NEXT -- Continue to next step.

5. CHECK DOOR LOCK OPERATION

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

OK:

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

NG -- REPLACE MAIN BODY ECU RH (COWL SIDE JUNCTION BLOCK RH)

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

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

(a) Connect the Techstream to the DLC3.

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

(c) Turn the Techstream on.

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

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

Body (Main Body RH (Cowl Side Junction Block RH))





OK:

On the Techstream screen, ON or OFF will be displayed accordingly.

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

OK -- REPLACE MAIN BODY ECU RH (COWL SIDE JUNCTION BLOCK RH)

7. INSPECT FRONT DOOR LOCK ASSEMBLY (DOOR KEY LINKED LOCK AND UNLOCK SWITCH)

(a) Remove the front door lock assembly (driver side) Removal.

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





Standard Resistance:





NG -- REPLACE FRONT DOOR LOCK ASSEMBLY (DRIVER SIDE) Removal
OK -- Continue to next step.

8. CHECK HARNESS AND CONNECTOR (FRONT DOOR LOCK - MULTIPLEX NETWORK MASTER SWITCH)

(a) Disconnect the multiplex network master switch assembly 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 MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY Removal