Instrument lighting (MIU 2)
Instrument lighting (MIU 2) |
Fault symptoms |
Instrument lighting for the tachometer, tank/temp/turbo gauges and speedometer does not come on, nor do the central warning and INFO DISPL lamps light up.
Diagnostic procedure |
1. |
Connect a Scan Tool and select
"TEST FUNCTIONS" followed by "INSTR LIGHTG TEST". If in proper working order, the
following will take place:
The Scan Tool sets the light intensity (from the light sensor) at 0 and controls the light intensity (from the rheostat) from 0 to maximum for 10 seconds. The instrument lighting will now increase from 0 to maximum brightness. Following this, the Scan Tool increases the light intensity (from the light sensor) from 0 to maximum. After 2-3 seconds a threshold point is reached (corresponding to daylight) at which the instrument lighting goes out and the brightness of the indicator lamps increases. |