GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

DEFINITION: Items powered through the auxiliary power outlets do not operate.

1

Did you review the auxiliary power outlet description and perform the necessary inspections?

--

Go to Step 2

Go to Symptoms

2

Plug the item into the auxiliary power outlet, and operate the item.

Does the item work?

--

Go to Testing for Intermittent Conditions and Poor Connections

Go to Step 3

3

  1. Inspect the auxiliary power user's insertion element, if possible.
  2. Disconnect the connector at the auxiliary power outlet.
  3. Connect an unpowered test lamp between the auxiliary power outlet connector, cavity A for CKT 840 (ORN), and ground. Refer to Circuit Testing in Wiring Systems.

Does the test lamp light?

--

Go to Step 4

Go to Step 5

4

Connect a digital multimeter (DMM) between the auxiliary power outlet connector, cavity B for CKT 150 (BLK), and ground. Refer to Circuit Testing in Wiring Systems.

Is continuity present?

--

Go to Step 7

Go to Step 6

5

Repair the open in CKT 840 (ORN) between the IP fuse block and the auxiliary power outlet. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Step 8

Go to Step 3

6

Repair the open in CKT 150 (BLK) between the auxiliary power outlet and ground G201. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Step 8

Go to Step 3

7

Replace the auxiliary power outlet.

Is the repair complete?

--

Go to Step 8

Go to Step 3

8

Operate the system in order to verify the repair.

Did you correct the condition?

--

System OK

Go to Step 3