For 1990-2009 cars

Step | Action | Value(s) | Yes | No
--- | --- | --- | --- | ---
1 | Did you perform the BCM diagnostic system check? | -- | Go to Step 2 | Go to A Diagnostic System Check - Body Control System
2 | Did you perform the Content Theft Deterrent System Check? | -- | Go to Step 3 | Go to Content Theft Deterrent (CTD) System Check
3 |

1. Remove the key from the ignition key cylinder lock.
2. Close all of the vehicle doors.
3. While observing the door locks, press the unlock button on the keyless entry transmitter.
4. Observe the door locks for the following actions. The action depends on the auto door lock mode:

• | The driver door unlocks.

• | All of the doors unlock.

Does one of the above actions occur?

--

Go to Step 4

Go to Step 6

4 |

1. Turn off the IP dimmer switch off.
2. Turn on the interior lights override switch enabling the interior lights.
3. Remove the key from the ignition switch.
4. With the driver door open, press the lock on the door lock switch.
5. Close all of the vehicle doors.
6. Insert the key in the driver's door key cylinder lock.
7. While observing the interior courtesy lights, turn the key and keep the key in place for 1 second in order to unlock the driver door.

Do the interior courtesy lights turn on for 40 seconds upon unlocking the door with the key?

--

Go to Step 5

Go to Step 7

5 | Perform the Content Theft Deterrent (CTD) System Check again. Does the content theft deterrent system work as described in the Content Theft Deterrent System Check? | -- | Go to Step 8 | Go to Step 9
6 | The content theft deterrent system is malfunctioning due to a malfunction between the BCM and the keyless entry system. Refer to Remote Keyless Entry System Check Is the action complete? | -- | Go to Step 10 | --
7 | The content theft deterrent system is malfunctioning due to a malfunction between the BCM and the door lock cylinder switches. Refer to Automatic Door Locks System Check Is the action complete? | -- | Go to Step 10 | --
8 | A malfunction is not present at this time. Refer to Content Theft Deterrent (CTD) Circuit Description Is the action complete? | -- | Go to Step 10 | --
9 | Replace the BCM. Refer to Body Control Module Replacement Is the repair complete? | -- | Go to Step 10 | --
10 |

1. Turn the ignition switch to the LOCK position.
2. Connect all of the connectors.
3. Install all of the components.
4. Turn the ignition switch to the RUN position for 6 seconds.
5. Turn the ignition switch to the LOCK position.
6. Remove the BCM PRGRM fuse.
7. Turn the ignition switch to the ACC position. (The BCM flashes the fasten belts indicator and sounds the chime 4 times identifying the BCM type installed on the vehicle.)
8. Within one second, turn the ignition switch from the ACC position, to the LOCK position, then back to the ACC position. (The BCM sounds any DTCs stored.)

Are any BCM DTCs present?

--

Go to A Diagnostic System Check - Body Control System

Go to Content Theft Deterrent (CTD) System Check