GM Service Manual Online
For 1990-2009 cars only

Power Door Lock Switch Inoperative - Left Side or Right Side Right Side

Step

Action

Value(s)

Yes

No

Important: A short will cause an open fuse(s). Before performing this diagnostic procedure, inspect the fuse(s) for an open.

1

Did you perform the power door locks system check?

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Go to Step 2

Go to Power Door Locks System Check

2

Connect a test light between the right door lock switch connector terminal F and ground.

Does the test light illuminate?

--

Go to Step 3

Go to Step 4

3

Connect a test light between the right door lock switch connector terminal A and terminal F.

Does the test light illuminate?

--

Go to Step 5

Go to Step 6

4

Repair an open in CKT 1240 between the right door lock switch and the fuse block. Refer to Wiring Repairs in Wiring Systems.

Did you complete the repair?

--

Go to Power Door Locks System Check

--

5

Connect the test light between the right door lock switch connector terminal G and terminal F.

Does the test light illuminate?

--

Go to Step 8

Go to Step 9

6

Measure the resistance in CKT 250 between the right front door lock switch connector terminal A and ground.

Is the resistance within the specified range?

0-2 ohms

Go to Step 20

Go to Step 7

7

Repair an open in CKT 250 between the right front door lock switch connector terminal A and G302. Refer to Wiring Repairs in Wiring Systems.

Did you complete the repair?

--

Go to Power Door Locks System Check

--

8

  1. Disconnect the right door lock switch.
  2. Use the test light in order to probe the right door lock switch connector between terminal B and terminal A.
  3. Connect a fused jumper between the right door lock switch connector terminal F and terminal C.

Does the test light illuminate?

--

Go to Step  11

Go to Step  12

9

Measure the resistance in CKT 250 between the right front door lock switch connector terminal G and ground.

Is the resistance within the specified range?

0-2 ohms

Go to Step  19

Go to Step  10

10

Repair an open in CKT 250 between the right front door lock switch connector terminal G and G302. Refer to Wiring Repairs in Wiring Systems.

Did you complete the repair?

--

Go to Power Door Locks System Check

--

11

  1. Connect the test light between the right door lock switch connector terminal C and terminal G.
  2. Connect the fused jumper between the right door lock switch connector terminal F and terminal B.

Does the test light illuminate?

--

Go to Step  14

Go to Step  15

12

Inspect for a faulty connection at the right door lock switch connector.

Is the connection OK?

--

Go to Step  19

Go to Step  13

13

Repair the faulty connection at the right door lock switch connector. Refer to Connector Repairs in Wiring Systems.

Did you complete the repair?

--

Go to Power Door Locks System Check

--

14

  1. Disconnect the left door lock switch.
  2. Measure the resistance in CKT 194 between the right door lock switch connector terminal C and the left door lock switch connector terminal A.

Is the resistance within the specified range?

0-2 ohms

Go to Step  17

Go to Step  18

15

Inspect for a faulty connection at the right door lock switch connector.

Is the connection OK?

--

Go to Step  20

Go to Step  16

16

Repair the faulty connection at the right door lock switch connector. Refer to Connector Repairs in Wiring Systems.

Did you complete the repair?

--

Go to Power Door Locks System Check

--

17

Measure the resistance in CKT 195 between the right door lock switch connector terminal B and the left door lock switch connector terminal G.

Is the resistance within the specified range?

0-2 ohms

Go to Door Lock Motor Test

Go to Step  19

18

Repair an open in CKT 194 between the right door lock switch connector terminal C and the left door lock switch connector terminal A. Refer to Wiring Repairs in Wiring Systems.

Did you complete the repair?

--

Go to Power Door Locks System Check

--

19

Repair an open in CKT 195 between the right door lock switch connector terminal B and the left door lock switch connector terminal G. Refer to Wiring Repairs in Wiring Systems.

Did you complete the repair?

--

Go to Power Door Locks System Check

--

20

Replace the right door lock switch. Refer to Door Lock Switch Replacement .

Did you complete the repair?

--

Go to Power Door Locks System Check

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