Rev 1

!"�WBrake Lights With High-level Brake Light And Reset Memory:

WIRING DIAGRAM

Brake Lights With High Level Brake Lights: Component Location:

COMPONENT LOCATION VIEW

Brake Lights With High Level Brake Lights: Component ID:

COMPONENT ID
14 Rear lights in the rear light clusters.
22A Fuse board behind the cover flap in the glove box.
27 Direction indicator lamps, left-hand side, in front and rear light clusters.
28 Direction indicator lamps, right-hand side, in front and rear light clusters.
29 Brake light switch beside the brake pedal.
30 Brake lights in rear light clusters.
32 Rear lights
CD: in rear light clusters.
CS: in tailgate light fitting.
109 High-level brake light
CD: in rear window.
CS: in tailgate.
159 Distribution terminal (+15 circuit) in main fuse box behind the glove box.
213 - Pictogram in the main instrument display panel.
228A Filament monitor, rear lamps, in luggage compartment on the left-hand side.
230 Distribution terminal (+30 circuit) in main fuse box behind the glove box.
258 Connection for trailer lighting, in luggage compartment below the
(H8-5) left-hand light cluster.

8-Pin Connector
H8-4 By the left-hand rear wheel housing.

Grounding Points
G3 Grounding point, luggage compartment, on the left-hand side by the left-hand rear light cluster.
G5 Grounding point, rear seat, on lefthand side.
G29 Grounding point, luggage compartment, on the right-hand side by the right-hand rear light cluster.

DESCRIPTION OF OPERATION
Voltage is fed from fuse 24 to brake light switch 29. When the switch is activated, brake lights 30 receive voltage via filament monitor 228A.

Brake lights on a trailer are fed directly from the brake light switch via towbar connector 258.

If any brake light bulb fails, connection C1 will be grounded in the filament monitor. Since connection 9 on the pictogram receives positive voltage, the indicator lamps for rear lights and the central warning lamp will light up. See also Pictogram-Filament Monitor.

High-level Brake Light
On cars with a high-level brake light, the filament monitor has an extra circuit for monitoring brake light 109. (The high-level brake light on CS models has 4 bulbs. In order for the pictogram to light up, at least 2 bulbs must in most cases be defective.)

If the bulb (or in the case of CS models, the bulbs) fails, connection C1 is grounded and the rear lighting and central warning lamps in the pictogram light up.

In certain markets the high-level brake light is not permitted.

Cable 132D is available in all markets so that a high-level brake light can be fitted if the relay is changed for one with a logic circuit for the high-level brake light.

Reset Memory
The filament monitor contains a circuit for monitoring brake light switch 29. This circuit is supplied with current via the terminal block for the +15 circuit.

If in proper working order, the pictogram's warning lamp for rear lights should light up when the ignition is switched on and stay on until the brake pedal is depressed.

FAULT DIAGNOSIS HINTS
1. Check that fuse 24 is intact and supplied with current.
2. Check that brake light switch 29 is supplied with current.
3. Activate the brake light switch. Check that the bulbs are OK and supplied with current and also check the ground connection of each lamp.
4. Check the filament monitor.
5. Check the connectors, wiring harness and ground connections.

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.