GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Cadillac 🢒 1999 🢒 Catera 🢒 Body and Accessories 🢒 Lighting Systems 🢒 Instrument Panel Compartment Lamp Inoperative

Step

Action

Value(s)

Yes

No

1

Did you perform the Interior Lights Diagnostic System Check?

--

Go to Step 2

Go to Interior Lamps System Check

2
  1. Disconnect the IP compartment lamp.
  2. Turn the ignition switch to the ON position.
  3. Use a DMM in order to measure the voltage between terminal A of the IP compartment lamp connector and a known good ground.

Does the voltage measure near the specified value?

B+

Go to Step 3

Go to Step 7

3

Use the DMM in order to measure the resistance between terminal B of the IP compartment lamp and a known good ground.

Does the resistance measure lerss than the specified value?

5ohms

Go to Step 5

Go to Step 4

4
  1. Install the IP compartment lamp.
  2. Remove the IP compartment lamp switch. Refer to Instrument Panel Compartment Lamp Switch Replacement in Instrument Panel, Gauges and Console.
  3. Connect a fused jumper between terminals A and B of the IP compartment lamp switch connector.

Does the IP compartment lamp turn ON?

--

Go to Step 6

Go to Step 8

5

Replace the IP compartment lamp. Refer to Instrument Panel Compartment Lamp Replacement in Lighting Systems.

Did you complete the repair?

--

Go to Step 11

--

6

Replace the IP compartment lamp switch. Refer to Instrument Panel Compartment Lamp Replacement in Lighting Systems.

Did you complete the repair?

--

Go to Step 11

--

7
  1. Locate an open or a high resistance in CKT AP802.
  2. Repair the open or the high resistance in CKT AP802

Did you complete the repair?

--

Go to Step 11

--

8

Use the DMM in order to measure the resistance between terminal A of the IP compartment lamp switch connector and a known good ground.

Does the resistance measure less than the specified value?

5 ohms

Go to Step 9

Go to Step 10

9
  1. Locate an open or a high resistance in CKT F72.
  2. Repair the open or the high resistance in CKT F72.

Did you complete the repair?

--

Go to Step 11

--

10
  1. Locate an open or a high resistance in CKT F71.
  2. Repair the open or the high resistance in CKT F71.

Did you complete the repair?

--

Go to Step 11

--

11
  1. Connect all connectors and components that were previously disconnected.
  2. Verify that the IP compartment lamp operates properly.

Does the IP compartment lamp operate properly?

--

Go to Interior Lamps System Check

Go to Step 1