DTC 008

DTC 008

CIRCUIT DESCRIPTION
The remote control door lock receiver (RCDLR) communicates with the body control module (BCM) through the keyless entry serial data circuit. When any button on the keyless entry transmitter is pressed, the transmitter sends a signal to the RCDLR. The RCDLR sends a lock or unlock request to the BCM, depending on which button is pressed on the transmitter. On vehicles equipped with content theft deterrent (CTD), the RCDLR may also send a panic alarm request to the BCM. The BCM receives the message and performs the appropriate function. The BCM also uses the keyless entry serial data circuit in order to communicate with the RCDLR when programming transmitters.

DTC DESCRIPTOR
This diagnostic procedure supports the following DTC:
DTC 008 ?

CONDITIONS FOR RUNNING THE DTC
The system voltage is at least 9 volts and no more than 16 volts.

CONDITIONS FOR SETTING THE DTC
The BCM will set DTC 008 whenever the BCM detects a lack of communication with the RCDLR, including any of the following conditions:
- The RCDLR B+ supply is open or shorted to ground.
- The RCDLR ground circuit is open or has high resistance.
- The BCM detects an open in the keyless entry serial data circuit.
- The BCM detects a short to ground in the keyless entry serial data circuit.
- The BCM detects a short to voltage in the keyless entry serial data circuit.

ACTION TAKEN WHEN THE DTC SETS
The keyless entry system will not operate. The power sliding door will continue to operate with the keyless entry transmitter.

CONDITIONS FOR CLEARING THE DTC
A DTC will clear when the fault is no longer present and the DTCs are cleared as described in DTC Clearing. Refer to On-Board Diagnostic features in body control systems.

DIAGNOSTIC AIDS
Perform a visual inspection for loose or poor connections at all related components.

TEST DESCRIPTION

Steps 1 - 12:

Steps 13 - 16:

The numbers below refer to the step numbers on the diagnostic table.
5. Tests for an open, poor connection, or short to ground in the keyless entry serial data circuit. A measurement of B+ indicates good circuit continuity.
6. Tests for an short to voltage in the keyless entry serial data circuit. Illumination of an INCANDESCENT test lamp indicates a short to voltage. A LED circuit tester may give an incorrect indication.