GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2007 🢒 Epica 🢒 Diagnostic Navigation 🢒 Vehicle Diagnostic Information 🢒 Courtesy Lamps Inoperative - Door Step

Test Description

The number below refers to the step number on the diagnostic table.

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

Step

Action

Values

Yes

No

1

  1. Remove the door step 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 check?

--

Go to Step 3

Go to Step 2

2

Replace the bulb.

Is the repair complete?

--

System OK

--

3
  1. Reinstall the door step lamp bulb.
  2. Inspect fuse EF11.

Is fuse EF11 open?

--

Go to Step 4

Go to Step 5

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

Is the repair complete?

--

System OK

--

5

Measure the voltage at fuse EF11.

Does the voltage at fuse EF11 measure within the specified range?

11-14 V

Go to Step 7

Go to Step 6

6

Repair the open circuit between the battery and fuse EF11.

Is the repair complete?

--

System OK

--

7
  1. Disconnect the doorstep lamp electrical connector.
  2. Measure the voltage terminal 12 of connector C352 and terminal 13 of connector C361.

Does the voltage measure within the specified range?

11-14 V

Go to Step 8

Go to Step 9

8

Repair the open circuit between fuse EF11 and the door step lamp.

Is the repair complete?

--

System OK

--

9
  1. Reconnect the door step lamp.
  2. Remove the front door switch.
  3. With a voltmeter or test lamp, test the circuit wire, terminal 4, at the front door switch.

Does the voltage at the front door switch measure within the specified range?

11-14 V

Go to Step 11

Go to Step 10

10

Repair the open circuit between the door step lamp and the front door switch.

Is the repair complete?

--

System OK

--

11

Use an ohmmeter to measure the resistance between ground and the circuit wire at the front door switch connector on the harness side.

Is the resistance equal to the specified value?

0 ohms

Go to Step 12

Go to Step 13

12

Replace the front door switch.

Is the repair complete?

--

System OK

--

13

Repair the ground circuit for the front door switch.

Is the repair complete?

--

System OK

--