Circuit Description
The keyless entry system allows the driver to do the following functions from outside the vehicle by using a hand held radio transmitter:
| • | Unlock the door locks. The courtesy lights activate automatically when using this function. |
| • | Lock the door locks. |
| • | Release the rear compartment lid. |
| • | Remote alarm. |
The transmitter operates in the UHF band. The transmitter sends digitally coded signals to the Remote Control Door Lock Receiver (RCDLR) when pressing any of the transmitter buttons.
The RCDLR detects and decodes transmitter signals. For locking, unlocking, and remote alarm commands, the RCDLR sends command messages to the Body Control Module (BCM) to operate the door locks actuators, courtesy lights, and remote alarm.
Conditions for Setting the DTC
- The BCM detects a short to ground in circuit 917.
- All conditions must be present for more than 0.3 seconds.
Action Taken When the DTC Sets
The BCM stores DTC B2802 in memory.
Conditions for Clearing the DTC
| • | The BCM no longer detects a short to ground in circuit 917. |
| • | A history DTC will clear after 100 consecutive ignition cycles if the condition for the fault is no longer present. |
| • | Using a scan tool. |
Diagnostic Aids
| • | The following conditions may cause an intermittent malfunction to occur: |
| • | An intermittent open or short to ground in circuit 917. |
| • | The BCM is shorted to ground internally. |
| • | The RCDLR is shorted to ground internally. |
| • | DTC P1626 will set in the Powertrain Control Module (PCM) when the ignition switch is on with the Body Control Module (BCM) disconnected. When BCM diagnostics and repairs are completed, refer to Powertrain Control Module Diagnosis in Engine Controls for additional information on PCM related DTCs. |
Test Description
The numbers below refer to the step numbers on the diagnostic table.
-
This step checks for a short to ground in circuit 917.
-
This step determines whether circuit 917 is shorted to ground or the RCDLR is faulty.
Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
1 | Was the BCM Diagnostic System Check performed? | -- | ||
Is the voltage measured within the specified range? | 9-14V | |||
3 |
Does DTC B2802 reset as a current DTC? | -- | ||
Is the resistance measured same as the specified value? | ∞ | |||
5 | Repair short to ground in circuit 917. Is the repair complete? | -- | -- | |
6 | Replace the RCDLR. Refer to Receiver Replacement in Keyless Entry for service procedure. Is the repair complete? | -- | -- | |
7 |
Is the repair complete? | -- | -- | |
8 | The malfunction is not present at this time. Refer to Diagnostic Aids for additional information regarding this DTC. | -- | -- | -- |
9 |
Are there any BCM current DTCs set? | -- | System OK |
