Headlamp

�XHeadlamps:

WIRING DIAGRAM

Headlamps: Component Location:

COMPONENT LOCATION VIEW

Headlamps: Component ID:

COMPONENT ID
1 Battery in the engine bay.
8 Lighting relay, in main fuse box in front of the battery.
10 Lights switch on dashboard between steering wheel and driver's door.
11 Full beam in LH and RH headlamps.
12 Dipped beam in LH and RH headlamps.
16 Rheostat, lighting for controls, on dashboard between steering wheel and driver's door.
22A Fuse board, behind the cover flap in the glove box.

In The Main Instrument Display Panel
47G Full beam indicator lamp
47V Lights-on indicator lamp
75 Distribution block, battery positive, on the battery tray.
78 Relay, dimmed lights, in main fuse box in front of the battery.
80 Resistor, dimmed lights, on left-hand structural member.
213 Pictogram, in the main instrument display panel.
215 Dipswitch, on the left-hand side of the steering column.
228B Filament monitor, front lamps, in main fuse box in front of the battery.
231 Distribution terminal (+54 circuit), in main fuse box behind the glove box.
342A Fuse board, in main fuse box in front of the battery.

2-Pin Connectors
H2-63 By the left-hand structural member, beside the resistor (80) for dimmed dipped beams (CS).
H2-70 Beside the wiring harness, under front main fuse box 342.

10-Pin Connector
H10-15 Behind the left-hand headlamp.

24-Pin Connector
H24-2 Behind the left-hand headlamp.

Grounding Points
G8 Grounding point, dashboard, by the left-hand front loudspeaker socket.
G30 Grounding point, left-hand structural member, behind the left-hand headlamp.
G31 Grounding point, on the right-hand structural member, behind the right-hand headlamp.

DESCRIPTION OF OPERATION
When the headlamps are switched on, the parking lights, which also include the rear lights and number plate lighting, will also light up. The Parking Lights are dealt separately.

Full Beam
Ignition switch 20 must be in the Drive position before full beams can be switched on. Current will then be supplied to light switch 10, connection X. Dipswitch 215 is spring-loaded.

When light switch 10 is in position 2, lighting relay 8 receives operating current from connection 56 of the light switch. The "upper", coil in lighting relay 8 is energized and contact is made between connections 30 and 56b in the relay.

Pressing dipswitch 215 once energizes the "lower" coil and contact is made between connections 30 and 56a of lighting relay 8.

Current is then supplied via lighting relay 8, connection 56a, to full beam lamps 11, via filament monitor 228B and fuses 7 and 8 (current for full beam indicator lamp 47G is also supplied via fuse 7).

When full beams are on, dipped beams will also be on at reduced intensity. (This function has been discontinued during the model year.) Current is then supplied via connection 56a of lighting relay 8 to the coil of relay 78, which is then energized. Current is supplied via fuse 11 and the relay contacts through resistor 80 to dipped beam lamps 12 via filament monitor 228B and fuses 5 and 6.

When full beams are switched on, current for the parking lights is taken from light switch position 2 via pin 58.

Headlamp Flasher
Full beam can also be activated irrespective of the position of the ignition switch and light switch by holding dipswitch 215 depressed. Both relay coils in lighting relay 8 are then energized and current is supplied to the full beam lamps via filament monitor 228B and fuses 7 and 8.

Dipped Beam
When light switch 10 is in position 2, lighting relay 8 receives operating current from connection 56 of the light switch. The "upper" coil of lighting relay 8 is energized and contact is made between connections 30 and 56b of the relay.

Current is then supplied via connection 56b of lighting relay 8 to dipped beam lamps 12 via filament monitor 228B and fuses 5 and 6.

When dipped beams are switched on, current for the parking lights is supplied via light switch connection 58.

Filament Monitor
If one of the full or dipped beam lamps breaks, the relay in the filament monitor will operate and connection C2 will be grounded. Since connection 5 on pictogram 213 receives positive voltage, the indicator lamps for front lighting and the central warning lamp will light up, see Pictogram-Filament monitor.

Lights-on Indicator Lamp
Cars for certain markets have an indicator lamp (47V) which shows when the headlamps are switched on. The indicator lamp is supplied with current via connection 58 of light switch 10.

FAULT DIAGNOSIS HINTS
The headlamp is activated when ignition switch 20 is in the Drive position and when light switch 10 is in position 2.
1. Check that fuses 7 and 8 (full beam), and 5 and 6 (dipped beam) are intact and supplied with current.
2. Check that the lamps are intact and supplied with current.
3. Check the grounding of each lamp.
4. Check the light switch, the lighting relay, the dip- switch connections and filament monitor connections.
5. Check the operation of relay 78 and resistor 80 by taking readings on the connections.
6. Check the connectors, wiring harness and ground connections.

For fault diagnosis on the Parking Lights, see the Parking Lights.

IMPORTANT: When changing the bulbs, make sure that the new bulbs are of the correct rating. Otherwise, the lamps in the pictogram may light up due to imbalance in the filament monitor coil.