| |
Jim Grant's Tech Tips
‘96 Jeep
Cherokee, Gauge Problems
Q: The speedometer, tachometer, and gas
gauge on my ‘96 Jeep Cherokee are not working. I have changed the instrument
cluster pod and still have the same problem. When they went out they would
work off and on and the needles bounced around at times, then went out
for good. Any suggestions?.......Chris
A: Start
with checking the fuses. The number 7 fuse in the fuse panel is a main
player in powering up the instrument cluster in your Jeep. You should
also realize that the action of the instrument cluster displays (speedometer,
tachometer, gas gauge, etc.) are primarily a result of information processed
by a computer called a Body Control Module (BCM). Because so many of your
gauges are acting strangely the BCM is suspect. The BCM does have built
in diagnostic abilities that can be accessed with a scan-tool. Virtually
all of the lights and gauges on your dash can be operated via the scan-tool,
through the BCM, for confirming function. Before replacing any more costly
instrument clusters or installing a replacement BCM (the cost of a replacement
BCM will create respiratory problems), be sure to check the fuses and
electrical connectors. Proper diagnosis will save you money.
|
|
