GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Pontiac 🢒 1998 🢒 Sunfire 🢒 Body and Accessories 🢒 Roof 🢒 Power Sunroof Inoperative

Step

Action

Value(s)

Yes

No

1

Did you perform the Power Sunroof System Check?

--

Go to Step 2

Go to Power Sunroof System Check

2
  1. Turn the ignition switch to the RUN position.
  2. Measure the voltage between the sunroof control module connector C2 terminal B and ground.
  3. Leave the DMM connected after taking the measurement.

Does the voltage measure at the specified value?

B+

Go to Step 3

Go to Step 17

3

With the meter still connected, operate the sunroof switch.

Does the voltage measure at the specified value?

B+

Go to Step 4

Go to Step 17

4
  1. Measure the voltage between the sunroof control module connector C2 terminal D and ground.
  2. Operate the sunroof switch.

Is the voltage within the specified range?

Less than 300 mV

Go to Step 5

Go to Step 18

5
  1. Measure the voltage between the sunroof control module connector C2 terminal B and terminal D.
  2. Operate the sunroof switch.

Does the voltage measure at the specified value?

B+

Go to Step 6

Go to Step 18

6

Measure the voltage between the sunroof switch connector terminal C and ground.

Is the voltage within the specified range?

4-6 V

Go to Step 7

Go to Step 15

7

Measure the voltage between the sunroof switch connector terminal C and terminal F.

Is the voltage within the specified range?

4-6 V

Go to Step 8

Go to Step 19

8

Measure the voltage between the sunroof switch connector terminal C and terminal F while operating the switch to the OPEN position.

Is the voltage within the specified range?

Less than 300 mV

Go to Step 9

Go to Step 20

9

Measure the voltage between the sunroof switch connector terminal B and terminal F.

Is the voltage within the specified range?

4-6 V

Go to Step 10

Go to Step 15

10

Measure the voltage between the sunroof switch connector terminal B and terminal F while operating the switch to the CLOSED position.

Is the voltage within the specified range?

Less than 300 mV

Go to Step 11

Go to Step 20

11

Measure the voltage between the sunroof control module connector C2 terminal C and terminal D while operating the switch to the OPEN position.

Does the voltage measure at the specified value?

B+

Go to Step 12

Go to Step 13

12

Measure the voltage between the sunroof control module connector C2 terminal C and terminal D while operating the switch to the OPEN position.

Does the voltage measure at the specified value?

B+

Go to Step 22

Go to Step 21

13

Measure the voltage between the sunroof control module connector C2 terminal A and terminal D while operating the switch to the CLOSED position.

Does the voltage measure at the specified value?

B+

Go to Step 14

Go to Step 21

14
  1. Measure the voltage between the sunroof control module connector C2 terminal A and terminal C while operating the switch to the CLOSED position.
  2. Leave the DMM in place after making the measurement.

Does the voltage measure at the specified value?

B+

Go to Step 22

Go to Step 21

15
  1. Disconnect the sunroof switch.
  2. With the DMM in place, measure the voltage again.

Is the voltage within the specified range?

4-6 V

Go to Step 20

Go to Step 16

16
  1. Leave the sunroof switch disconnected.
  2. Disconnect the sunroof control module connector C1.
  3. Measure the voltage between the control module terminal 6 and terminal 7.

Is the voltage within the specified range?

4-6 V

Go to Step 24

Go to Step 21

17

Repair an open or a high resistance in CKT 141. Refer to Wiring Repairs in Wiring Systems.

Did you complete the repair?

--

Go to Power Sunroof System Check

--

18

Repair an open or a high resistance in CKT 150. Refer to Wiring Repairs in Wiring Systems.

Did you complete the repair?

--

Go to Power Sunroof System Check

--

19

Repair an open or a high resistance between the sunroof switch terminal F and the sunroof control module connector C1 terminal 5. Refer to Wiring Repairs in Wiring Systems.

Did you complete the repair?

--

Go to Power Sunroof System Check

Go to Step 21

20

Replace the sunroof switch. Refer to Sunroof Switch Replacement .

Did you complete the repair?

--

Go to Power Sunroof System Check

--

21

Replace the sunroof control module. Refer to Power Sunroof Module Replacement .

Did you complete the repair?

--

Go to Power Sunroof System Check

--

22

Repair an open or a high resistance between terminal A and terminal B of the sunroof motor assembly and the control module connector C1 terminal A and terminal C. Refer to Wiring Repairs in Wiring Systems.

Did you complete the repair?

--

Go to Power Sunroof System Check

Go to Step 23

23

Replace the power sunroof motor assembly. Refer to Power Sunroof Motor Replacement .

Did you complete the repair?

--

Go to Power Sunroof System Check

--

24

Repair an open or a high resistance in either of the following locations:

    • Between the sunroof control module connector C1 terminal 7 and the sunroof switch terminal B
    • Between the sunroof control module connector C1 terminal 6 and the sunroof switch terminal C

Refer to Wiring Repairs in Wiring Systems.

Did you complete the repair?

--

Go to Power Sunroof System Check

--