GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Pontiac 🢒 2000 🢒 Grand Prix 🢒 Body and Accessories 🢒 Theft Deterrent 🢒 Lights Inoperative in Content Theft Deterrent (CTD) Alarm Mode

Step

Action

Value(s)

Yes

No

The content theft deterrent system is unable to flash the headlamps when setting off the alarm.

1

Test the headlamps by turning the headlamp switch to the HEAD position.

Do the headlamps turn on?

--

Go to Step 2

Go to Step 11

2

Did you perform the Body Control Module (BCM) diagnostic system check?

--

Go to Step 3

Go to Diagnostic System Check - Body Control System in Body Control System

3

Was the CTD System Check performed?

--

Go to Step 4

Go to Diagnostic System Check - Theft Deterrent

4

Perform the BCM Input/Output test:

  1. Turn off the I/P dimmer switch.
  2. Turn the ignition switch to the OFF position.
  3. Remove the MALL PGM fuse.
  4. Turn the ignition switch to the ACC position. The BCM sounds 4 chimes equivalent to the BCM type installed on the vehicle.
  5. Within 1 second, turn the ignition switch from the ACC position to the OFF position.
  6. Turn the ignition switch back to the ACC position. The BCM sounds any DTCs stored.
  7. Turn the I/P dimmer switch to the DOME position. The BCM entered the Input/Output test.

The BCM runs the Input/Output test in numerical order. Cycle the I/P dimmer switch from the DOME position to the OFF position and back to the DOME position in order to move to the next test. The BCM flashes the fasten belts indicator and sounds the chime a number equivalent to the Input/Output test number listed below:

  1. Test 1: De-energizes circuit 1393 (protected courtesy light output)
  2. Test 2: Energizes circuit 1393
  3. Test 3: Grounds circuit 690 (courtesy lights control)
  4. Test 4: Turns on the headlights
  5. Energizes the horn relay for 25 minutes by grounding circuit 28, sounding the horn
  6. Test 6: Turns on the theft deterrent indicator lamp
  7. Test 7: Turns off the theft deterrent indicator lamp

Do the headlamps turn on when the BCM performs test 4?

--

Go to Step 9

Go to Step 5

5
  1. Disconnect the BCM connector C2.
  2. Use a 10A fused jumper to connect between the BCM harness connector C2 terminal D11 and ground.

    3. Do the headlamps turn on when connecting the fused jumper?

--

Go to Step 10

Go to Step 6

6
  1. Disconnect the theft deterrent relay.
  2. Use a test light to connect between the theft deterrent relay harness connector terminal C2 and ground.

Is the test light on?

--

Go to Step 7

Go to Step 13

7

Use a 20A fused jumper to connect between the theft deterrent relay harness connector terminals A2 and C1.

Are the headlamps on?

--

Go to Step 8

Go to Step 12

8
  1. Remove the jumper.
  2. Use a DMM to measure the resistance between the theft deterrent relay harness connector terminal A1 and the BCM harness connector C2 terminal D11.

Is the resistance less than the specified value?

2 ohms

Go to Step 17

Go to Step 14

9
  1. Turn the ignition switch to the OFF position.
  2. Reinstall the MALL PGM fuse.
  3. Verify the operation of the content theft deterrent system. Refer to Content Theft Deterrent (CTD) Operation .

Does the content theft deterrent system work as described in the system operation?

--

Go to Step 15

Go to Step 16

10
  1. Reconnect the BCM connector C2.
  2. Verify the operation of the content theft deterrent system. Refer to Content Theft Deterrent (CTD) Operation .

Does the content theft deterrent system work as described in the system operation?

--

Go to Step 15

Go to Step 16

11

The content theft deterrent system is unable to turn on the headlamps during an alarm event due to a malfunction with the vehicle headlamps. Refer to Daytime Running Lights (DRL) System Check in Lighting Systems.

Is the action complete?

--

Go to Step 18

--

12

Repair a poor connection or open in circuit 10.

Is the repair complete?

--

Go to Step 18

--

13

Repair a poor connection or open in circuit 2440.

Is the repair complete?

--

Go to Step 18

--

14

Repair a poor connection or open in circuit 352.

Is the repair complete?

--

Go to Step 18

--

15

Malfunction is not present at this time. Refer to Testing for Intermittent Conditions and Poor Connections in Wiring Systems for more information.

Is the action complete?

--

Go to Step 18

--

16
  1. Inspect the connections at the BCM.
  2. If the connections are OK, then replace the BCM. Refer to Body Control Module Replacement in Body Control System.

Is the repair complete?

--

Go to Step 18

--

17

Replace the theft deterrent relay.

Is the repair complete?

--

Go to Step 18

--

18
  1. Turn the ignition switch to the OFF position.
  2. Reinstall the connectors/components removed.
  3. Turn the ignition switch to the RUN position for 6 seconds.
  4. Turn the ignition switch to the OFF position.
  5. Remove the MALL PGM fuse.
  6. Turn the ignition switch to the ACC position. The BCM flashes the fasten belts indicator and sounds the chime 4 times. This identifies the BCM type installed on the vehicle.
  7. Within 1 second, turn the ignition switch from the ACC position to the OFF position.
  8. Turn the ignition switch back to the ACC position. The BCM sounds any DTCs stored.

Are there any BCM DTCs present?

--

Go to Step 1

System OK