Test Description
WARNING: This page is about a different car, the 2004 Pontiac Aztek and 2004 Buick Rendezvous. However, it is still accessible from the selected car via links, so may be relevant.
The number below refers to the step number on the diagnostic table.
- 16: B+ voltage should be present on the serial data terminal when tested with a DMM, but should not illuminate the test lamp. An illuminated test lamp indicates a short to voltage in the serial data circuit.
Keyless Entry System Inoperative
| Step | Action | Value | Yes | No |
|---|---|---|---|---|
| 1 | Did you perform the Diagnostic System Check? | - | Go to Step 2 | Go to Diagnostic System Check - Remote Keyless Entry |
| 2 | Press each button of the transmitter one at a time. Does the system operate normally? |
- | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 3 |
| 3 | Lock and unlock the door locks using the controls inside the vehicle. Do the locks operate properly? |
- | Go to Step 4 | Go to Power Door Locks Inoperative (Aztek) or Power Door Locks Inoperative (Rendezvous) in Doors |
| 4 | Operate the rear compartment lid release from the control inside the vehicle. Does the rear compartment lid release operate properly? |
- | Go to Step 5 | Go to Symptoms - Body Rear End in Body Rear End |
| 5 |
IMPORTANT:
Inspect that the keyless entry transmitter part number to determine that it is the correct model for the vehicle. A wrong model transmitter may pass this test, but will not activate the vehicle remote system.
|
- | Go to Step 13 | Go to Step 6 |
| 6 | Do any of the buttons on the transmitter sound the tone and illuminate the green light when pressed? | - | Go to Step 9 | Go to Step 7 |
| 7 | Replace the transmitter battery. Refer to Transmitter Battery Replacement . Did you complete the replacement? |
- | Go to Step 8 | - |
| 8 |
|
- | Go to Step 10 | Go to Step 9 |
| 9 | Replace the transmitter. Did you complete the replacement? |
- | Go to Step 12 | - |
| 10 | Perform the synchronization procedure. Refer to Transmitter Resynchronization . Did the horn chirp to confirm that the synchronization has been completed? |
- | Go to Step 11 | Go to Step 12 |
| 11 | Operate the transmitter within range of the vehicle. Do all of the keyless entry functions operate normally? |
- | Go to Step 25 | Go to Step 12 |
| 12 |
IMPORTANT:
All transmitters which are to be recognized by the remote control door lock receiver must be programmed in a single programming sequence. If the system is placed in program mode it will erase all previously programmed transmitters upon the receipt of the programming signal from the first transmitter. Perform the programming procedure. Refer to Transmitter Programming .Did you hear the body control module (BCM) chime to confirm that the transmitter programming has been completed? |
- | Go to Step 25 | Go to Step 13 |
| 13 |
|
- | Go to Step 14 | Go to Step 21 |
| 14 | Connect a test lamp between the battery positive voltage circuit of the RCDLR and the RCDLR ground circuit. Does the test lamp illuminate? |
- | Go to Step 15 | Go to Step 22 |
| 15 |
|
B+ | Go to Step 16 | Go to Step 17 |
| 16 |
|
- | Go to Step 19 | Go to Step 18 |
| 17 | Test the keyless entry serial data circuit for an open, high resistance, or short to ground. Refer to Circuit Testing
and Wiring Repairs
in Wiring Systems. Did you find and correct the condition? |
- | Go to Step 25 | Go to Step 20 |
| 18 | Inspect for poor connections at the harness connector of the RCDLR. Refer to Testing for Intermittent Conditions and Poor Connections
and Wiring Repairs
in Wiring Systems. Did you find and correct the condition? |
- | Go to Step 25 | Go to Step 23 |
| 19 | Repair the short to voltage in the keyless entry serial data circuit. Refer to Testing for a Short to Voltage
and Wiring Repairs
in Wiring Systems. Did you complete the repair? |
- | Go to Step 25 | Go to Step 23 |
| 20 | Inspect for poor connections at the harness connector of the body control module (BCM). Refer to Testing for Intermittent Conditions and Poor Connections
and Wiring Repairs
in Wiring Systems. Did you find and correct the condition? |
- | Go to Step 25 | Go to Step 24 |
| 21 | Repair the open, high resistance, or short to ground in the battery positive voltage circuit of the RCDLR. Refer to Circuit Testing
and Wiring Repairs
in Wiring Systems. Did you complete the repair? |
- | Go to Step 25 | - |
| 22 | Repair the open or high resistance in the RCDLR ground circuit. Refer to Testing for Continuity
and Wiring Repairs
in Wiring Systems. Did you complete the repair? |
- | Go to Step 25 | - |
| 23 |
IMPORTANT:
Perform the keyless entry transmitter programming procedure when replacing the RCDLR. Replace the RCDLR. Refer to Remote Control Door Lock Receiver Replacement .Did you complete the replacement? |
- | Go to Step 25 | - |
| 24 |
IMPORTANT:
Perform the BCM programming procedure when replacing the BCM. Replace the BCM. Refer to Body Control Module (BCM) Programming/RPO Configuration
in Body Control System.Did you complete the replacement? |
- | Go to Step 25 | - |
| 25 | Operate the system in order to verify the repair. Did you correct the condition? |
- | System OK | Go to Step 3 |