Symptom Testing: Notes
CAUTION:
When battery is disconnected, vehicle computer and memory systems may lose memory data. Driveability problems may exist until computer systems have completed a relearn cycle. See the COMPUTER RELEARN PROCEDURES
article in the GENERAL INFORMATION section before disconnecting battery.
SYMPTOM TEST INDEX
| Symptom | Test |
|---|---|
| Display Not Illuminated, Too Dim Or Blank But Backlighted | A |
| Display Does Not Respond To Buttons | B |
| Fuel Gauge Always Reads Empty | C |
| Inaccurate Fuel Gauge Indication | D |
| Fuel Gauge Always Reads Full | E |
| Temperature Gauge Inaccurate | F |
| Speedometer Reads Zero Or Indication Varies Erratically | G |
| Speedometer Constantly Reads Too High Or Too Low | H |
| Cruise Control Indicator Always On | I |
| Cruise Control Indicator Won't Come On W/Cruise Control Engaged | J |
| Mileage Constantly Reads Too High Or Too Low | K |
| Odometer Won't Accumulate Mileage Or Counts 1 Mile & Jumps Back 1 Mile | L |
| Tachometer Reads Too High, Too Low Or Erratic | M |
| Instant Or Average Fuel Economy Always Shows 0 Miles/Gal Or 99 Miles/Gal | N |
| Trip Distance Does Not Accumulate | 0 |
| "Distance To Empty" Won't Go Below 200 Miles With Fuel Tank Empty, Or "Distance To Empty" Always Shows Zero | P |
| Trip Distance Does Not Accumulate Or Changes - Distance To Empty Always Reads Zero Or Never Changes | Q |
| Low Fuel Indicator Never/Always On | R |
| Temperature Gauge Incorrect | S |
| Door Ajar Warning Never/Always On | T |
| Charge System Warning Never/Always On | U |
| Low Washer Fluid Warning Never/Always On | V |
| Brake Warning Never/Always On | W |
| Turn & High Beam Indicators Never/Always On | X |
| Left Turn Indicator Never/Always On | Y |
| Right Turn Indicator Never/Always On | Z |
| High Beam Warning Never/Always On | AA |
| Seat Belt Warning Never/Always On | AB |
| Low Oil Pressure Warning Never/Always On | AC |