EXH Warning Lamp

EXH Warning Lamp Diagrams:

EXH Warning Lamp Components:

Locations of components

3 Earthing point
In the facia

22 Fuse box
In the electrical distribution box in the engine compartment, on the left-hand wheel housing

47L EXH warning lamp
In the combined instrument, on the instrument panel

61 Windscreen wiper stalk switch
On the right-hand side of the steering column

83 Relay for intermittent operation of the wind screen wipers
Under the facia, to the left of the steering column (behind the knee shield)

86 EGR selector
Under the facia, to the left of the steering column (behind the knee shield)

152B 29-pole red connector
In the electrical distribution box in the engine compartment, on the left-hand wheel housing. The connector is accessible from the interior of the car

Operation
Cars with 8-valve engines and the Lambda exhaust gas emission control system are equipped with a warning lamp (EXH) which reminds the driver that components of the emission control system require maintenance.

When the ignition switch is in the drive position, EGR selector 86 is supplied from fuse 5, via the 29-pole red connector 152B. When the car has travelled about 48000 km (30000 miles), the selector will close and lamp 47L will light up. The lamp wilt then remain alight until the selector is reset to zero.

Fault-tracing hints
The lamp will be operative when the ignition switch is in the drive position.

1. Check fuse 5 and check that the supply to it is live.
2. Check that the selector is live.
3. Check the lamp.
4. Check the connectors, cable harnesses and earth connections.