Inspect the headlamps.

Do the headlamps work?

--

Go to Step 3

Go to Step 2

Repair the headlamps before continuing with this chart.

After the headlamps have been repaired, are the rear combination lamps still inoperative?

--

Go to Step 3

System OK

1. Turn ON the Illumination lamps.
2. Use a voltmeter to measure voltage at the bulb socket positive terminal.

Is voltage at the bulb socket within the specified value?

11-14 V

Go to Step 4

Go to Step 7

Connect an ohmmeter between ground and the lamp socket negative terminal.

Is the resistance equal to the specified value?

0 ohms

Go to Step 6

Go to Step 5

Repair the ground circuit for the lamps.

Is the repair complete?

--

System OK

--

Replace the faulty bulbs.

Is the repair complete?

--

System OK

--

Inspect fuses EF16 and EF17.

Is either of the fuses blown?

--

Go to Step 8

Go to Step 9

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

Is the repair complete?

--

System OK

--

1. Temporarily substitute the headlamp relay in place of the illumination relay.
2. Turn ON the illumination lamps switch.

Do the taillamps illuminate?

--

Go to Step 10

Go to Step 11

1. Return the headlamp relay to its original position.
2. Replace the illumination relay.

Is the repair complete?

--

System OK

--

1. Remove the illumination relay.
2. Use a voltmeter to measure the illumination relay socket at the connector for terminal 30.

Is the voltage within to the specified value?

11-14 V

Go to Step 13

Go to Step 12

Replace the engine fuse block.

Is the repair complete?

--

System OK

--

With the illumination relay removed, use a voltmeter to measure the illumination relay socket at the connector for terminal 86.

Is the voltage equal to the specified value?

11-14 V

Go to Step 14

Go to Step 12

With the illumination relay removed, connect an ohmmeter between ground and the connector for the illumination lamp relay terminal 85.

Is the ohmmeter within the specified value?

0 ohms

Go to Step 15

Go to Step 17

1. Reinstall the illumination relay.
2. Turn the illumination switch to the ON position.
3. Inspect the voltage at EF16 and EF17.

Is the voltage within to the specified value?

11-14 V

Go to Step 16

Go to Step 12

Repair the open circuit between the fuses EF17 and EF16 and the illumination lamps.

Is the repair complete?

--

System OK

--

1. Disconnect the headlamp switch connector C2.
2. Connect a fused jumper wire between ground and terminal 4 of connect C2, instrument harness side.

Do the illumination lamps turn ON with the jumper in place?

--

Go to Step 19

Go to Step 18

Repair the open circuit between terminal 85 of the illumination relay and terminal 4 of the headlamp switch connector C2.

Is the repair complete?

--

System OK

--

1. Disconnect the headlamp combination switch connector C2.
2. On the disconnected switch, select the illumination lamp ON position.
3. At the switch side of the connector C2, use an ohmmeter to measure the resistance between terminal 2 and terminal 4.

Is the ohmmeter within the specified value?

0 ohms

Go to Step 20

Go to Step 21

Repair the open circuit between headlamp switch connector C2 terminal 2 and ground.

Is the repair complete?

--

System OK

--

Replace the headlamp switch.

Is the repair complete?

--

System OK

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