Celebrity L4-151 2.5L (1982)
Malfunction Indicator Lamp: Technical Service Bulletins
Engine Controls - Harness Short Intermittent Codes 22/34
85-23
6 (VI)
Jan., 1985
Subject:
INTERMITTENT CHECK ENGINE LIGHT (CODE 22 OR CODE 34) ON 2.5L ENGINE
Model and Year:
1982-85 CELEBRITY AND
1982-83 CITATION
TO:
ALL CHEVROLET DEALERS
An intermittent "check engine" light with an intermittent Code 22 or Code 34 may be the result of a shorted wire harness at the generator bracket (2.5L
engines).
The MAP and TPS wire harness runs through that area and may become abraded by the bracket.
The condition can be confirmed by noting a voltage drop to zero volts when the harness shorts out. A repair should be made to protect the wires from
further abrasion.
