GM Service Manual Online
For 1990-2009 cars only

Cigar lighter is inoperative

Step

Action

Value(s)

Yes

No

1

  1. Connect a DMM from the inoperative cigar lighter connector terminal B and ground.
  2. Measure for continuity to ground in the CKT 150.

Is the CKT 150 continuous to ground?

--

Go to Step 3

Go to Step 2

2

Repair CKT 150 for an open or a short to battery voltage.

Has the repair been made and a system rechecked been performed?

--

Recheck System Operation

--

3

  1. Connect the DMM from the inoperative cigar lighter connector terminal A and ground.
  2. Measure the voltage at the DMM.

Is the measured voltage within the specified value?

10.0-14.0V

Go to Step 5

Go to Step 4

4

Repair CKT 840 for an open or a short to ground.

Has the repair been made and a system rechecked been performed?

--

Recheck System Operation

--

5

Replace the inoperative cigar lighter.

Has the repair been made and a system rechecked been performed?

--

Recheck System Operation

--