PINPOINT TEST B : A Single or More Than One Door Lock Is Inoperative: Notes

Refer to REMOTE KEYLESS ENTRY AND ALARM SYSTEM for schematic and connector information.

NOTE: The Tire Pressure Monitor (TPM) module may also be known as the Radio Transceiver Module (RTM).

Normal Operations and Fault Conditions

The RFA module supplies voltage and ground to all of the door lock actuators by controlling the lock all and unlock all relays. The non-servicable lock relays inside the RFA module receive voltage from the BCM. The lock relays receive ground through a dedicated ground circuit to the RFA module. Upon a lock request, the RFA module supplies voltage on the all door lock circuit and ground on the driver and passenger door unlock circuits. Upon an unlock request, the voltage and ground are reversed on the previously listed circuits. When the door lock and unlock relays are not energized, they are connected to ground.

The RFA module receives inputs from the keyless entry keypad, and the Intelligent Access (IA) key data from the TPM module. The BCM receives input from the door lock control switches and both modules share the information obtained from the inputs over the MS-CAN.

Visual Inspection and Diagnostic Pre-checks

Binding lock rod