FUEL GAUGE TROUBLESHOOTING CONT'D
NOTE: fuel gauges are dampened, your aguge may take a fes seconds to react durning testing.
Gauge powers up and does a full sweep> Proceed below
NO it does not power up and do a full sweep
Check for power and ground on the gauge studs to rule out a wire/connector issue
Remove the sending unit wire form the sending unit.
Power on the gauge
Ground the sending unit wire, gauge should peg HIGH
Remove the wire from ground, the gauge should peg LOW
YES the gauge did this CHECK SENDING UNIT for proper operation and matching range.
NO THE GAUGE DID NOT DO THIS CONTINUE BELOW
Perform the same test at the gauge, disconnect the sending unit wore at the gauge.
Turn on the key, gauge should do a full sweep and return to zero
Ground the sneding unit stud, hgauge should peg HIGH.
YES this worked but the test at the sending unit did not> There is a break or a ground short in the sending unit wire, inspect.
NO this did not help. Please contact NVU tech line at 248-850-5482 and have code SMSFUEL2 available.