Brake Lamp

�M�WBrake Lights:

WIRING DIAGRAM

Brake Lights: Component Location:

COMPONENT LOCATION VIEW

Brake Lights: Component ID:

COMPONENT ID
22A Main fuse board in the dashboard.
29 Brake light switch on the pedal assembly.
30 Brake lights in rear light clusters.
109 High-level brake light on tailgate.
258 Connection for trailer lighting.
500 ICE control module
LHD: above main relay board in dashboard
RHD: behind main relay board in dashboard
540 Main instrument display panel on the dashboard.
541 SID unit on the dashboard.

2-Pin Connector
H2-3 In the luggage compartment behind the left-hand wheel housing.

4-Pin Connector
H4-3 In the luggage compartment behind the left-hand wheel housing.

33-Pin Connector
H33-1 Grey connector on the bracket below the left-hand A pillar.

Grounding Points
G3 Grounding point, luggage compartment, below left-hand rear light cluster.
G5 Grounding point under rear seat on the left.
G34S Grounding point, control module bracket (Signal) below the right-hand A pillar.

DESCRIPTION OF OPERATION
Pin 2 of brake lights switch 29 is supplied with current via fuse 12.

When the switch is actuated, brake lights 30 receive current via the ICE control module.

The brake lights on a trailer, if any, are supplied with current direct from the brake lights switch via connector 258 (H8-5).

The ICE control module monitors the bulbs and sends information to pin 8 of the SID unit which lights up the "DEFECTIVE LAMP" indicator lamp or the INFO DISPL lamp in the main instrument display panel at the same time as a message is displayed in the SID unit.

On cars for certain markets the SID unit contains a message telling the driver to test the brake lights immediately after switching on the ignition.

The ICE control module also monitors the high-level brake light and senses when more than two bulbs are defective.

FAULT DIAGNOSIS HINTS
1. Check that fuse 12 is intact and supplied with current.
2. Check that pin 2 of brake lights switch 29 is supplied with
current.
3. Check the connectors, wiring harness and ground connections.

IMPORTANT: Whenever it is necessary to change any of the bulbs, always install a bulb of the correct rating. The ICE control module senses a state of imbalance and lights up the "DEFECTIVE LAMP" indicator lamp or INFO DISPL lamp in the main instrument display panel.