Keyless Entry System Inoperative. Buick GL7 (Export) 2000

For 1990-2009 cars

Step | Action | Value | Yes | No
--- | --- | --- | --- | ---
1 | Did you perform the Remote Keyless Entry 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 in Doors

4

Important: Inspect that the keyless entry transmitter is the correct model for the vehicle remote system. A wrong model transmitter may pass this test, but will not activate the vehicle remote system.

1. Turn on J 43241 .
2. Place the transmitter on the J 43241 test pad.
3. Press each button of the transmitter one at a time.

Does a tone sound and the green light illuminate on J 43241 after each button is pressed?

--

Go to Step 10

Go to Step 5

5 | Do any of the buttons on the transmitter sound the tone and illuminate the green light when pressed? | -- | Go to Step 8 | Go to Step 6
6 | Replace the transmitter battery. Refer to Transmitter Battery Replacement . Did you complete the replacement? | -- | Go to Step 7 | --

7

1. Turn on J 43241 .
2. Place the transmitter on the J 43241 test pad.
3. Press each button of the transmitter one at a time.

Does a tone sound and the green light illuminate on J 43241 after each button is pressed?

--

Go to Step 9

Go to Step 8

8 | Replace the transmitter. Did you complete the replacement? | -- | Go to Step 10 | --
9 | Operate the transmitter within range of the vehicle. Do all of the Remote Keyless Entry functions operate normally? | -- | Go to Step 25 | Go to Step 10

10

Important: All transmitters which are to be recognized by the Remote Control Door Lock Receiver (RCDLR) 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 the locks cycle to lock then unlock?

--

Go to Step 25

Go to Step 10

11

1. Turn OFF the Ignition.
2. Disconnect the RCDLR.
3. Connect a test lamp between the battery positive voltage circuit of the RCDLR and a good ground.

Does the test lamp illuminate?

--

Go to Step 12

Go to Step 20

12 | 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 13 | Go to Step 21

13

1. Disconnect the test lamp.
2. Turn ON the ignition, with the engine OFF.
3. Measure the voltage between the keyless entry serial data circuit of the RCDLR connector and a good ground.

Does the voltage measure near the specified value?

B+

Go to Step 14

Go to Step 15

14

1. Turn OFF the ignition.
2. Connect a test lamp between the keyless entry serial data circuit of the RCDLR connector and a good ground.
3. Turn ON the ignition, with the engine OFF.

Does the test lamp illuminate?

--

Go to Step 22

Go to Step 18

15 | Test the keyless entry serial data circuit for a high resistance or an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 25 | Go to Step 16
16 | Test the keyless entry serial data circuit for a 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 19
18 | Inspect for poor connections at the harness connector of the RCDLR. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 25 | Go to Step 23
19 | Inspect for poor connections at the harness connector of the body control module (BCM). Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 25 | Go to Step 24
20 | Repair the high resistance or the open 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 | --
21 | Repair the high resistance or the open in the RCDLR ground circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you complete the repair? | -- | Go to Step 25 | --
22 | Repair the short to voltage in the keyless entry serial data circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you complete the repair? | -- | Go to Step 25 | --
23 | Important: Perform the RCDLR programming procedure when replacing the RCDLR Refer to Transmitter Programming . Replace the RCDLR. Refer to 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 Replacement 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