Toyota Camry (XV70): All Doors LOCK/UNLOCK Functions do not Operate Via Master Switch
DESCRIPTION
The main body ECU (multiplex network body ECU) receives switch signals from the multiplex network master switch assembly and driver door key cylinder lock or unlock switch signals from the front door lock with motor assembly LH. The main body ECU (multiplex network body ECU) activates the door lock motor on each door according to these signals.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
- The power door lock control system uses the LIN communication system. Inspect the communication function by following How to Proceed with Troubleshooting. Troubleshoot the power door lock control system after confirming that the communication systems are functioning properly.
Click here
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- Before replacing the main body ECU (multiplex network body ECU), refer to Registration.*
Click here
*: w/ Smart Key System
PROCEDURE
|
1. | CHECK FOR DTC (LIN COMMUNICATION SYSTEM) |
(a) Clear the DTCs.
Body Electrical > Main Body > Clear DTCs(b) Recheck for DTCs.
Body Electrical > Main Body > Trouble CodesOK:
DTC B1206 is not output.
| NG | .gif) | GO TO LIN COMMUNICATION SYSTEM (DTC B1206) |
|
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| 2. |
REPLACE MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY |
(a) Replace the multiplex network master switch assembly.
Click here
|
| 3. |
CHECK DOOR LOCK OPERATION |
(a) Check that all doors can be locked and unlocked by the multiplex network master switch assembly.
Click here
OK:
All doors can be locked and unlocked by the multiplex network master switch assembly.
| OK | | END (MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY WAS DEFECTIVE) |
| NG | | REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)
|
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Improper Operation
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On-vehicle Inspection
ON-VEHICLE INSPECTION PROCEDURE
1. INSPECT BRAKE FLUID LEVEL IN RESERVOIR Click here
2. INSPECT BRAKE BOOSTER ASSEMBLY
Click here 3. INSPECT VACUUM WARNING SWITCH ASSEMBLY
(a) Start the engine and stop it after 1 or 2 minutes. (b) Remove the battery.
for A25A-FKS: Click here
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Data List / Active Test
DATA LIST / ACTIVE TEST DATA LIST HINT:
Using the Techstream to read the Data List allows the values or states of switches, sensors, actuators and other items to be read without removing any parts. This non-intrusive inspection can be very useful because intermittent conditions or signals may be di
