NEOPLAN INTER-CITY BUS 1988: ELECTRICAL SYSTEM:IGNITION:MODULE

General Information

NHTSA Campaign ID Number: 92V029000

Make Model Year
NEOPLAN INTER-CITY BUS 1988
Date Owners Notified Date Received by ODI Date Added to Database
1992-02-14 1992-03-06 1992-03-16

Production Dates: 1986-01-01 - 1991-01-01

Manufacturers Involved: NEOPLAN USA CORPORATION

Component: ELECTRICAL SYSTEM:IGNITION:MODULE

Potential Number Of Units Affected: 1439

Report Initiator: MFR MFR Report

Summary

STRAY VOLTAGE INDUCED ON THE POWER TAKEOFF "PTO" SIGNAL CIRCUIT 510 MAY OCCUR WHEN THE ELECTRONIC CONTROL MODULE "ECM" CONNECTOR GETS WET, CAUSING UNINTENDED ENGINE ACCELERATION.

Consequence

UNINTENDED ENGINE ACCELERATION WHILE THE BUS IS IN GEARMAY RESULT IN A LOSS OF VEHICLE CONTROL AND AN ACCIDENT.

Remedy

INSTALL A GROUND INTERLOCK TO GROUND CIRCUIT 510 IN THE DDEC SYSTEM ANYTIME THE PTO IS DISABLED FOR ANY REASON. THE GROUND ELIMINATES THE STRAY VOLTAGE EFFECT BETWEEN THE ECM CONNECTOR AND CIRCUIT 510.

Notes

SYSTEM: ELECTRICAL SYSTEM.VEHICLE DESCRIPTION: TRANSIT BUSES AND INTER-CITY COACHES EQUIPPED WITH DETROITDIESEL EC-1 AND EC-II CONTROLLED 6V-92TA, 8V-92TA, AND SERIES 60 ENGINES.