For 1990-2009 cars

Step | Action | Values | Yes | No
--- | --- | --- | --- | ---
1 | Check the operation of the headlamps and the parking lamps. Do the headlamps and the parking lamps work on both sides of the vehicle? | -- | Go to Step 3 | Go to Step 2
2 | Repair the headlamps and the parking lamps. Does the instrument panel illumination turn ON after the headlamps and the parking lamps have been repaired? | -- | System OK | Go to Step 3
3 |

1. Disconnect the electrical connector at the dimmer control switch.
2. Turn the parking lamps ON.
3. Use a voltmeter to check the voltage at the dimmer control switch terminal 3.

Is the voltage within the specified range?

11-14 V

Go to Step 5

Go to Step 4

4 | Repair the open circuit between fuse EF21 and the dimmer control switch. Is the repair complete? | -- | System OK | --
5 |

1. Turn the lights OFF.
2. At the disconnected dimmer control switch, use an ohmmeter to check the resistance between ground and terminal 2 of the dimmer switch connector,

Is the resistance equal to the specified value?

~ohms

Go to Step 7

Go to Step 6

6 | Repair the open circuit between ground and terminal 2 of the dimmer control switch connector . Is the repair complete? | -- | System OK | --
7 |

1. Turn the parking lights ON.
2. At the disconnected dimmer control switch, check the voltage at terminal 1 of the dimmer control switch.

Is the voltage within the specified range?

11-14 V

Go to Step 9

Go to Step 8

8 | Repair the open circuit between connector S204 and terminal 1 of the dimmer control switch. Is the repair complete? | -- | System OK | --
9 | Replace the dimmer control switch. Is the repair complete? | -- | System OK | --