1

Test the parking lamps.

Do the parking lamps work?

--

Go to Step 3

Go to Step 2

Repair the parking lamps before continuing with this diagnostic table.

Is the instrument panel illumination still inoperative after the parking lamps have been repaired?

--

Go to Step 3

System OK

Inspect fuse EF7.

Is fuse EF7 open?

--

Go to Step 4

Go to Step 5

1. Inspect for a short circuit and repair it if necessary.
2. Replace fuse EF7.

Is the repair complete?

--

System OK

--

1. Turn ON the parking lamps.
2. Measure the voltage at fuse EF7.

Is the voltmeter within the specified value?

11-14 V

Go to Step 7

Go to Step 6

Repair the power supply for fuse EF7.

Is the repair complete?

--

System OK

--

1. Turn ON the parking lamps.
2. Temporarily disconnect any of the instrument panel illumination lamps.
3. Measure the voltage at the positive terminal, PU wire, of any of the illumination lamps.

Is the voltmeter within the specified value?

11-14 V

Go to Step 9

Go to Step 8

Repair the open circuit between fuse EF7 and the instrument panel illumination lamps.

Is the repair complete?

--

System OK

--

1. Disconnect the dimmer control switch.
2. Turn ON the parking lamps.
3. Measure the voltage at the D-BU wire on the top row of the dimmer connector terminals.

Is the voltmeter within the specified value?

11-14 V

Go to Step 11

Go to Step 10

Repair the open circuit between the dimmer control switch and the instrument panel illumination lamps.

Is the repair complete?

--

System OK

--

With the dimmer control switch disconnected, use an ohmmeter to measure the resistance between ground and the BK wire at the dimmer control switch connector.

Is the ohmmeter within the specified value?

0 ohms

Go to Step 13

Go to Step 12

Repair the open circuit between ground and the BK wire at the dimmer control switch connector.

Is the repair complete?

--

System OK

--

Replace the dimmer control switch.

Is the repair complete?

--

System OK

--