GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Pontiac 🢒 2009 🢒 G3 🢒 Body Systems 🢒 Lighting 🢒 Rear Compartment Lamp Inoperative

Test Description

The number below refers to step on the diagnostic table.

  1. Bulb test. Clip one end of a jumper wire to the negative battery terminal. Clip the other end of the jumper wire onto one end of the bulb. Take the free end of the bulb, the end without the jumper attached, and touch it to the positive battery terminal.

Step

Action

Values

Yes

No

Warning: Do not connect a jumper cable directly to the negative terminal of a discharged battery to prevent sparking and possible explosion of battery gases.

1

  1. Remove the luggage compartment lamp bulb and inspect the filament.
  2. If the filament is not broken, test the bulb using the vehicle's battery and a jumper wire.

Does the bulb pass the visual and physical inspection?

--

Go to Step 3

Go to Step 2

2

Replace the bulb.

Is the repair complete?

--

System OK

--

3
  1. Reinstall the luggage compartment lamp bulb.
  2. Test fuse EF22.

Is fuse EF22 open?

--

Go to Step 4

Go to Step 5

4
  1. Test for a short circuit and repair, if necessary.
  2. Replace the fuse.

Is the repair complete?

--

System OK

--

5

Test fuse EF22.

Does the voltage at fuse EF22 equal the specified value?

11-14 V

Go to Step 7

Go to Step 6

6

Repair the open power supply circuit for fuse EF22.

Is the repair complete?

--

System OK

--

7
  1. Disconnect the luggage compartment lamp electrical connector.
  2. Measure the voltage at the orange wire.

Does the voltage at the OG wire equal the specified value?

11-14 V

Go to Step 8

Go to Step 9

8

Repair the open circuit between fuse EF22 and the luggage compartment lamp.

Is the repair complete?

--

System OK

--

9
  1. Reconnect the luggage compartment lamp.
  2. Remove the luggage compartment lamp switch.
  3. With a voltmeter, or test lamp, measure the ORN/BLK wire at the luggage compartment lamp switch.

Does the voltage at the luggage compartment lamp switch equal the specified value?

11-14 V

Go to Step 11

Go to Step 10

10

Repair the open circuit between the luggage compartment lamp and the luggage compartment lamp switch.

Is the repair complete?

--

System OK

--

11

Use an ohmmeter to measure the resistance between ground and the BK wire at the luggage compartment lamp switch connector, harness side.

Does the ohmmeter indicate continuity?

--

Go to Step 12

Go to Step 13

12

Replace the luggage compartment lamp switch.

Is the repair complete?

--

System OK

--

13

Repair the ground circuit for the interior courtesy lamp.

Is the repair complete?

--

System OK

--