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Old 12-17-2012, 07:17 PM
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Found some more info.

PWG SIGNAL MONITORING & PWG FAILSAFE OPERATION:
• As a redundant safety feature the PWG provides two separate signals from two integral
potentiometers (Pot 1 and Pot 2) representing the driver’s request for throttle activation.
• If the monitored PWG potentiometer signals are not plausible, ME 7.2 will only use the
lower of the two signals as the driver’s pedal request input providing failsafe operation.
Throttle response will be slower and maximum throttle position will be reduced.
• When in PWG failsafe operation, ME 7.2 sets the EDK throttle plate and injection time
to idle (LL) whenever the brake pedal is depressed.

Do your brake lights operate normally? Do they come on when the brake pedal is push or are they on all the time?


• When the system is in PWG failsafe operation, the instrument cluster matrix display will
post “Engine Emergency Program” and PWG specific fault(s) will be stored in memory.

Does your instrument cluster display "Engine Emergency Program". I know most of this stuff is from an E38, but there is very little written on E53 with a M62TU engine. The E38 share the M62TU engine and hopefully most of the engine management controls.

All of the above info can be found at:

http://www.e38.org/m62tu.pdf
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