Electronic Control Modules - Damage From Arc Welding (91-7-5)

Publication date: 1991-04-05
Reference number: 91-7-5
Supersedes refnos: 90-11-6

ELECTRONIC CONTROL MODULES - DAMAGE FROM ARC WELDING

TECHNICAL SERVICE BULLETIN

Reference Number(s): 90-11-6, 91-7-5, Date of Issue: April 5, 1991
Superceded Bulletin(s): 90-11-6, Date of Issue: May 23, 1990.

EEC - ELECTRONIC CONTROL MODULES AND PROCESSORS - POSSIBLE DAMAGE FROM ARC WELDING

APPLICATION

Model(s): Ford 1985-91 Crown Victoria, Escort, Mustang, Taurus, Tempo, Thunderbird

Lincoln-Mercury: 1985-86 Capri

1985-91 Continental, Cougar, Topaz, Grand Marquis, Mark VII

1986-91 Sable, Town Car

1991 Capri

Merkur: 1985-89 XR4Ti

1988-90 Scorpio

Ford Light Truck: 1985-90 Bronco II

1985-91 Bronco, Econoline, F-150, F-250, F-350, Ranger

1986-91 Aerostar

1989-91 F Super Duty

1991 Explorer

Medium/Heavy Truck: 1991 F & B Series

Bulletin No.: 91-7-5

Date: April 5, 1991

NOTE: This bulletin supersedes Technical Service Bulletin 90-11-6 dated May 23, 1990.

ISSUE

Electronic control modules, including EEC processors, may be damaged if the negative battery ground cable is not disconnected before arc welding is performed. This occurs because the arc welding process can produce high electrical currents in the body of a vehicle when the negative battery ground cable is left connected.

ACTION

If arc welding procedures are to be performed, be sure to disconnect the battery ground cable.

CAUTION: Disconnect the negative battery ground cable before using any electric welding equipment.

WARRANTY INFORMATION

WARRANTY STATUS: Information Only.

OASIS CODES: 290000, 690000