Symptom Diagnostic Procedures

CIRCUIT DESCRIPTION

The door control receiver receives a signal from transmitter and sends it to body ECU by line.

And the body ECU transmits the signal to the door lock assembly to control the door lock/unlock operation.

NOTE: The wireless door lock control system has a function with a large-scale multiplex communication system. First of all, inspect the communication function depending on the "HOW TO PROCEED WITH TROUBLESHOOTING", and check that the communication system has no malfunction. Then finally proceed with the troubleshooting. Also, in case that the wire harness between the body ECU and door control receiver has been short-circuited, diagnostic code 42 will be output and the wireless control will not function.

INSPECTION PROCEDURE

HINT: The initial condition that the customizing function by the hand-held tester is not chosen is shown.

VEHICLE'S INITIAL CONDITION (CONDITION OF WIRELESS CONTROL POSSIBLE)

a. No key in the ignition key cylinder.
b. All doors closed (door open indicator off).
c. All doors locked.

Step 1 - 2:

Step 3:

Step 4 - 5:

Step 6 - 9:

HINT: The switch described in this text is a LOCK/UNLOCK switch for transmitting, and it is built in the door control transmitter.