GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Has the Folding Top Compartment Lid Release System Check been performed?

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Go to Step 2

Go to Folding Top Compartment Lid Release System Check

2

  1. Install a scan tool and display the BCM inputs.
  2. Monitor the folding top release switch status, while depressing the switch.

Does the scan tool indicate the switch as active when depressed?

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Go to Step 3

Go to Step 14

3

Inspect the TONN REL #17 fuse for an open.

Is the fuse open?

--

Go to Step 8

Go to Step 4

4

  1. Disconnect the folding top compartment lid latch connector.
  2. Connect a test light between the connector terminals A and B.
  3. Depress the folding top lid release switch.

Does the test light illuminate?

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Go to Step 9

Go to Step 5

5

  1. Connect the test light from the folding top compartment lid latch release connector terminal A to ground.
  2. Depress the folding top compartment lid release switch.

Does the test light illuminate?

--

Go to Step 10

Go to Step 6

6

  1. Remove the TONN REL micro relay #41.
  2. Connect a fused jumper wire from circuits 1340 to 2168 relay terminals in the instrument panel electrical center.

With the test light connected from the folding top compartment lid latch release connector terminal A to ground, does the test light illuminate?

--

Go to Step 7

Go to Step 11

7

  1. Connect a DMM from the circuit 2169 relay terminal in the instrument panel electrical center to ground.
  2. Measure resistance to ground of circuit 2169, while depressing the folding top compartment lid release switch.

Does the DMM indicate momentary continuity to ground when the switch is depressed?

--

Go to Step 13

Go to Step 12

8

Inspect and repair the short to ground in circuit 2168, if ok replace the folding top compartment lid latch. Refer to Folding Top Stowage Compartment Lid Latch Replacement .

Is the repair complete?

--

Go to Folding Top Compartment Lid Release System Check

--

9

Replace the folding top compartment lid latch. Refer to Folding Top Stowage Compartment Lid Latch Replacement .

Is the repair complete?

--

Go to Folding Top Compartment Lid Release System Check

--

10

Repair the open or high resistance condition in circuit 150.

Is the repair complete?

--

Go to Folding Top Compartment Lid Release System Check

--

11

Repair the open or high resistance condition in circuit 2168.

Is the repair complete?

--

Go to Folding Top Compartment Lid Release System Check

--

12

Inspect and repair the open or high resistance condition in circuit 2169, if ok replace the BCM. Refer to Body Control Module Replacement Body Control Module (BCM) Programming/RPO Configuration .

Is the repair complete?

--

Go to Folding Top Compartment Lid Release System Check

--

13

Replace the TONN REL micro relay #41.

Is the repair complete?

--

Go to Folding Top Compartment Lid Release System Check

--

14

  1. Disconnect the folding top compartment lid release switch connector.
  2. Connect a fused jumper wire from the switch connector terminal A to ground.

Does the scan tool indicate the switch as active, with the jumper wire connected?

--

Go to Step 16

Go to Step 15

15

Inspect and repair the open or high resistance condition in circuit 2166, if ok replace the BCM. Refer to Body Control Module Replacement Body Control Module (BCM) Programming/RPO Configuration .

Is the repair complete?

--

Go to Folding Top Compartment Lid Release System Check

--

16

Inspect and repair the open or high resistance condition in circuit 150, if ok replace the folding top compartment lid release switch.

Is the repair complete?

--

Go to Folding Top Compartment Lid Release System Check

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