Range Rover (LH) V8-3.5L (1987)
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Active Check Module: Description and Operation
DESCRIPTION
Ignition ON will initiate the bulb check for 12 ±4 secs.
If the engine is cranked during bulb check, the check will terminate in 0.75 ±0.25 secs.
In normal ambient light the warning lamps will operate at full brightness at the end of the bulb check period, and change to reduced brightness
within 20 secs. Note that the ignition and oil warning lamps will not reduce in brightness.
If a fault is suspected check the warning lamp bulbs and the continuity of the circuits before changing the warning lamp control unit.
