DOOR LOCK MOTORS
The door lock motors are controlled by the instrument cluster. A positive and negative battery connection to the two
motor terminals will cause the motor to move in one direction. Reversing the current will cause the motor to move
in the opposite direction.
REMOTE KEYLESS ENTRY
•
LOCK: Pressing the LOCK button locks all doors, sounds horn (chirp) once if enabled, flashes the park
lamps once if enabled, and arms the Vehicle Theft Security System (VTSS), if enabled. The chirp verifies
that the instrument cluster has sent a message for door lock operation. If a door has not been closed before
pressing the LOCK button, the vehicle may not be secured and the VTSS (if equipped) will not arm until the
door is closed.
•
UNLOCK: Pressing the UNLOCK button once will unlock the driver’s door first if enabled, flashes the park
lamps twice if enabled, activates the illuminated entry system, and disarms the Vehicle Theft Security Sys-
tem (VTSS), if equipped. Pressing the UNLOCK button twice within five seconds will unlock all doors, if
driver’s door first is enabled.
•
PANIC: Pressing the PANIC button sounds the horns at half second intervals, flashes the exterior lamps,
and turns ON the interior lamps. The panic alarm will remain on for three minutes, or until the PANIC button
is actuated again or the vehicle speed exceeds 25.7 Km/h (15 mph) will cancel the panic event.
DIAGNOSIS AND TESTING
POWER LOCK MOTOR
The most reliable, efficient, and accurate means to diagnose the power lock system requires the use of a scan tool
and the proper Diagnostic Procedures information.
Refer to the appropriate wiring information.
POWER LOCKS
The most reliable, efficient, and accurate means to diagnose the power lock system requires the use of a
scan tool and the proper Diagnostic Procedures information.
Following are tests that will help to diagnose the hard wired components and circuits of the power lock system.
However, these tests may not prove conclusive in the diagnosis of this system. In order to obtain conclusive testing
of the power lock system, the CAN data bus network must be checked.
Refer to the appropriate wiring information.
PRELIMINARY DIAGNOSIS
As a preliminary diagnosis for the power lock system, note the system operation while you actuate both the Lock
and Unlock functions with the power lock switches and with the Remote Keyless Entry (RKE) transmitter. Then,
proceed as follows:
•
If the entire power lock system fails to function with either the power lock switches or the RKE transmitter,
check the fuse in the Junction Block (JB).
•
If the power lock system functions with both power lock switches, but not with the RKE transmitter, proceed
to diagnosis of the Remote Keyless Entry (RKE) system.
•
If the power lock system functions with the RKE transmitter, but not with one or both power lock switches,
proceed to diagnosis of the door lock switches.
•
If the driver side power lock switch operates only the driver side front door power lock motor, but all other
power lock motors operate with the passenger side power lock switch or the RKE transmitter, use a scan
tool and the appropriate diagnostic information to diagnose the CAN data bus.
•
If only one power lock motor fails to operate with both power lock switches and the RKE transmitter, use a
scan tool and the appropriate diagnostic information to diagnose the CAN data bus.
HB
POWER LOCKS - SERVICE INFORMATION
8N - 53