GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Did you review the system operation and perform the necessary inspections?

--

Go to Step 2

Go to Symptoms - Roof

2

  1. Ensure that the vehicle is in the PARK position.
  2. Turn the ignition to the RUN position.
  3. Move the folding top switch to the up position or the down position depending on the position of the roof.

Does the power folding top move to the specified position?

--

Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems

Go to Step 3

3

Connect a test lamp between the folding top switch connector terminal F and ground. Refer to Circuit Testing in Wiring Systems.

Does the test lamp illuminate?

--

Go to Step 4

Go to Step 13

4

Connect a test lamp between the folding top switch connector terminals F and H and then F and D. Refer to Circuit Testing in Wiring Systems.

Does the test lamp illuminate in both cases?

--

Go to Step 5

Go to Step 6

5

  1. Connect a test lamp between the folding top switch connector terminals A and E. Refer to Circuit Testing in Wiring Systems.
  2. While observing the test lamp, press the folding top switch to the up position and then to the down position.

Does the test lamp illuminate in both cases?

--

Go to Step 7

Go to Step 8

6

Does the test lamp illuminate in either case?

--

Go to Step 14

Go to Step 15

7

  1. Connect a test lamp between the folding top pump connector terminals A and B. Refer to Circuit Testing in Wiring Systems.
  2. While observing the test lamp, press the folding top switch to the up position and then to the down position.

Does the test lamp illuminate in both cases?

--

Go to Step 10

Go to Step 12

8

Test for and repair a poor connection at the folding top switch connector. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.

Did you find and repair a poor connection?

--

Go to Step 25

Go to Step 9

9

Replace the folding top switch.

Did you complete the replacement?

--

Go to Step 25

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10

Test for and repair a poor connection at the folding top pump. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.

Did you find and repair a poor connection?

--

Go to Step 25

Go to Step 11

11

Replace the folding top pump. Refer to Power Folding Top Pump with Motor Replacement .

Did you complete the replacement?

--

Go to Step 25

--

12

Repair a poor connection, an open, or a short to ground in circuit 162 or circuit 163. Refer to Wiring Repairs or Connector Repairs in Wiring Systems.

Did you complete the repair?

--

Go to Step 25

--

13

Repair a poor connection or an open in the ignition 3 voltage circuit of the folding top switch. Refer to Wiring Repairs or Connector Repairs in Wiring Systems.

Did you complete the repair?

--

Go to Step 25

--

14

Repair a poor connection or an open in the inoperative ground circuit between the folding top switch and S232. Refer to Wiring Repairs or Connector Repairs in Wiring Systems.

Did you complete the repair?

--

Go to Step 25

--

15

Is the vehicle equipped with ETA?

--

Go to Step 16

Go to Step 17

16

Connect a test lamp between the folding top relay connector terminals C2 and C1. Refer to Circuit Testing in Wiring Systems.

Does the test lamp illuminate?

--

Go to Step 17

Go to Step 18

17

Repair a poor connection or an open in the ground circuit of the folding top relay switch (ETA) or the ground circuit of the folding top switch (w/o ETA). Refer to Wiring Repairs or Connector Repairs in Wiring Systems.

Did you complete the repair?

--

Go to Step 25

--

18

Connect a test lamp between the folding top relay connector terminals C2 and A1. Refer to Circuit Testing in Wiring Systems.

Does the test lamp illuminate?

--

Go to Step 19

Go to Step 20

19

Connect a test lamp between the folding top relay connector terminals C2 and A2. Refer to Circuit Testing in Wiring Systems.

Does the test lamp illuminate?

--

Go to Step 21

Go to Step 17

20

Connect a test lamp between the folding top relay connector terminal C2 and ground. Refer to Circuit Testing in Wiring Systems.

Does the test lamp illuminate?

--

Go to Step 23

Go to Step 24

21

Test for and repair a poor connection at the folding top relay. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.

Did you find and repair a poor connection?

--

Go to Step 25

Go to Step 22

22

Replace the folding top relay.

Did you complete the replacement?

--

Go to Step 25

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23

Repair a poor connection or an open in the ground circuit of the folding top relay coil. Refer to Wiring Repairs or Connector Repairs in Wiring Systems.

Did you complete the repair?

--

Go to Step 25

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24

Repair a poor connection or an open in the ignition 3 voltage circuit of the folding top relay coil. Refer to Wiring Repairs or Connector Repairs in Wiring Systems.

Did you complete the repair?

--

Go to Step 25

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25

Operate the system in order to verify the repair.

Did you correct the condition?

--

System OK

Go to Step 3