For 1990-2009 cars

Caution: When using an external power source to provide power to a component or circuit, always use a fused jumper wire with the proper amp rating for the component or circuit being tested. Failure to use a fused jumper wire may result in accidental overload and may cause personal injury or damage to the component or circuit.

### Test Description

The numbers below refer to the step numbers 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
--- | --- | --- | --- | ---
Schematic Reference: Interior Lights Schematics Connector End View Reference: Component Connector End Views
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 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. Did you complete the replacement? | -- | System OK | --
3 |

1. Reinstall the luggage compartment lamp bulb.
2. Inspect fuse Ef19.

Is fuse Ef19 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.

Did you find and correct the condition?

--

System OK

--

5 | Inspect fuse Ef19. Does the voltage at fuse Ef19 measure within the specified range? | 11-14 V | Go to Step 7 | Go to Step 6
6 | Repair the open power supply circuit for fuse Ef19. Did you complete the repair? | -- | 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 measure within the specified range?

11-14 V

Go to Step 8

Go to Step 9

8 | Repair the open circuit between fuse Ef19 and the luggage compartment lamp. Did you complete the repair? | -- | System OK | --
9 |

1. Reconnect the luggage compartment lamp.
2. Remove the luggage compartment lamp switch.
3. With a voltmeter, or test lamp, test the PK/BK wire at the luggage compartment lamp switch.

Does the voltage at the luggage compartment lamp switch measure within the specified range?

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. Did you complete the repair? | -- | 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. Is the resistance equal to the specified value? | 0 Ω | Go to Step 12 | Go to Step 13
12 | Replace the luggage compartment lamp switch. Did you complete the replacement? | -- | System OK | --
13 | Repair the ground circuit for the interior courtesy lamp. Did you complete the repair? | -- | System OK | --