Driver Side Door Entry Lock Function Does Not Operate

THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Entry Function): Driver Side Door Entry Lock Function does not Operate
- Driver Side Door Entry Lock Function does not Operate

DESCRIPTION

If the driver side door entry lock function does not operate but the entry unlock function operates, the communication between the vehicle and electrical key transmitter is normal. The malfunctioning part may be an entry lock sensor circuit (front door outside handle assembly [for driver side] -> certification ECU).

WIRING DIAGRAM





INSPECTION PROCEDURE

NOTICE:
* The smart key system (for Entry Function) uses a multiplex communication system (LIN communication system) and the CAN communication system. Inspect the communication function by following How to Proceed with Troubleshooting How To Proceed With Troubleshooting. Troubleshoot the smart key system (for Entry Function) after confirming that the communication systems are functioning properly.
* When using the Techstream with the engine switch off to troubleshoot: Connect the Techstream to the DLC3 and turn a courtesy light switch on and off at 1.5-second intervals until communication between the Techstream and vehicle begins.
* Check that there are no electrical key transmitters in the vehicle.
* Before performing the inspection, check that DTC B1242 (wireless door lock control) is not output Smart Key System (for Entry Function).
* When checking the entry lock operation multiple times, the lock operation may be limited to 2 consecutive operations depending on the settings. In order to perform the entry lock operation 3 or more times, an unlock operation must be performed once (any type of unlock operation is sufficient). However, only consecutive entry lock operations are limited. Using the wireless lock or other types of lock operations, it is possible to perform consecutive lock operations without this limitation.
* Before replacing the certification ECU, refer to the engine immobiliser system (w/ Smart Key System) Engine Immobiliser System (W/ Smart Key System).
PROCEDURE

1. CHECK POWER DOOR LOCK OPERATION

(a) When the door control switch on the multiplex network master switch assembly is operated, check that the doors unlock and lock according to the switch operation Operation Check.

OK:

Door locks operate normally.

NG -- GO TO POWER DOOR LOCK CONTROL SYSTEM
OK -- Continue to next step.

2. READ VALUE USING TECHSTREAM (LOCK SENSOR)

(a) Using the Techstream, read the Data List Smart Key System (for Entry Function).





OK:

"ON" (lock sensor is touched) and "OFF" (lock sensor is not touched) appear on the screen.

NG -- CHECK HARNESS AND CONNECTOR (FRONT DOOR OUTSIDE HANDLE - CERTIFICATION ECU)

OK -- REPLACE CERTIFICATION ECU

3. CHECK HARNESS AND CONNECTOR (FRONT DOOR OUTSIDE HANDLE - CERTIFICATION ECU)

(a) Disconnect the M1 handle connector.

(b) Disconnect the F79 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 -- Continue to next step.

4. CHECK FRONT DOOR OUTSIDE HANDLE ASSEMBLY (FOR DRIVER SIDE)

(a) Measure the voltage according to the value(s) in the table below.









Standard Voltage:





NG -- REPLACE FRONT DOOR OUTSIDE HANDLE ASSEMBLY (FOR DRIVER SIDE)

OK -- REPLACE CERTIFICATION ECU