For 1990-2009 cars

Step | Action | Value(s) | Yes | No
--- | --- | --- | --- | ---
1 | Did you perform the Diagnostic System Check - Vehicle? | -- | Go to Step 2 | Diagnostic System Check - Vehicle
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 | 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 | Symptoms - Vehicle Access
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 | Symptoms - Vehicle Access
5 | Operate the transmitter within range of the vehicle. Do all of the keyless entry functions operate normally? | -- | Go to Step 19 | Go to Step 6
6 | 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 you hear the body control module (BCM) chime to confirm that the transmitter programming has been completed?

--

Go to Step 19

Go to Step 7

7 |

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 8

Go to Step 15

8 | 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 9 | Go to Step 16
9 |

1. Disconnect the test lamp.
2. Connect a DMM between the keyless entry serial data circuit and the RCDLR ground circuit.
3. Turn ON the ignition, with the engine OFF.
4. Observe the voltage.

Does the DMM indicate the specified value?

B+

Go to Step 10

Go to Step 11

10 |

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

Does the test lamp illuminate?

--

Go to Step 13

Go to Step 14

11 | Test the keyless entry serial data circuit for the following conditions:

• | An open

• | A high resistance

• | A short to ground

Did you find and correct the condition?

--

Go to Step 19

Go to Step 12

12 | Inspect for poor connections at the harness connector of the RCDLR. Did you find and correct the condition? | -- | Go to Step 19 | Go to Step 17
13 | Repair the short to voltage in the keyless entry serial data circuit. Did you complete the repair? | -- | Go to Step 19 | Go to Step 17
14 | Inspect for poor connections at the harness connector of the body control module (BCM). Did you find and correct the condition? | -- | Go to Step 19 | Go to Step 18
15 | Repair the open, high resistance, or short to ground in the battery positive voltage circuit of the RCDLR. Did you complete the repair? | -- | Go to Step 19 | --
16 | Repair the open or high resistance in the RCDLR ground circuit. Did you complete the repair? | -- | Go to Step 19 | --
17 | Important: Perform the keyless entry transmitter programming procedure when replacing the RCDLR. Replace the RCDLR. Did you complete the replacement? | -- | Go to Step 19 | --
18 | Replace the BCM. Refer to Body Control Module Replacement for replacement, setup, and programming. Did you complete the replacement? | -- | Go to Step 19 | --
19 | Operate the system in order to verify the repair. Did you correct the condition? | -- | System OK | Go to Step 3