Instruments - Speedometer & Printed Circuit Power Feed
Number 85-8-15 Date 8/85Subject: SPEEDOMETER AND PRINTED CIRCUIT POWER FEED
1985 GRAND AM
INSTRUMENT PANEL - GAGES CLUSTER:
INSTRUMENT PANELGAGES CLUSTER:
AIR CONDITIONING (C60) - COMPRESSOR CONTROLS:
CONDITION:
On the 1985 Pontiac Grand Am, the technician may not be able to correctly diagnose the speedometer 12 volt battery feed.
CAUSE:
The 12 volt battery power feed is on circuit no. 50, the heater and air conditioning 25 amp fuse circuit. It is spliced into S274 along with the coolant fan relay, A/C control head, and battery power.
CORRECTION:
Use the attached numbered electrical diagnosis charts in place of the same numbered diagnosis charts in the 1985 Grand Am Service Manual.