Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
System Tests: Notes
Identify symptom and perform corrective action as necessary. See SYSTEM TESTS INDEX table.
| Component | Symptom | TEST No. | ||||
|---|---|---|---|---|---|---|
| All Meters, Gauges & Lights | No Display At All | 1 | ||||
| All Indicator Needles Do Not Light | Replace Circuit Plate | |||||
| One Indicator Needle Doesn't Light | 2 | |||||
| Entire Face Does Not Light | Replace Circuit Plate | |||||
| Face Not Illuminated At One Or More Locations | 3 | |||||
| Brightness Does Not Change When Lights Are Turned On | 4 | |||||
| Brightness Does Not Change When Rheostat Is Turned | 5 | |||||
| Brightness Remains Dim With Light Switch OFF | Replace Circuit Plate | |||||
| Brightness Does Not Go Out When Starter Is Operated | 6 | |||||
| Speedometer | Does Not Operate While Driving | 7 | ||||
| Display Is Faulty | Replace Speedometer | |||||
| VSS Signal Faulty | 8 | |||||
| Tachometer | Does Not Operate | 9 | ||||
| Display Is Faulty | Replace Tachometer | |||||
| Fuel Gauge | Does Not Work or Works Abnormally | 10 | ||||
| Fuel Level Warning | Warning Doesn't Light or Always Lit | 11 | ||||
| Engine Coolant Temperature Gauge | Does Not Operate Or Operation Is Abnormal | 12 | ||||
| Odometer & Twin Trip Meter | Display Does Not Change While Driving | 13 | ||||
| Twin Trip Meter | Display Is Reset When Ignition Turned Off | 14 | ||||
| Abnormal Display | (1) | |||||
| Outside Air Temp. Display | Abnormal Display | 15 | ||||
| Oil Level Warning | Light Does Not Illuminate | 16 | ||||
| Light Always Illuminated | 17 | |||||
| Transmission PWR Indicator | Abnormal Operation Or Indicator Does Not Illuminate1 | 18 | ||||
| CRUISE MAIN Indicator | Abnormal Operation Or Indicator Does Not Illuminate | 19 | ||||
| SNOW Indicator | Abnormal Operation Or Indicator Does Not Illuminate | 20 | ||||
| Shift Position Indicator | Abnormal Operation Or Indicator Does Not Illuminate | 21 | ||||
| TRAC OFF Indicator (2) | Abnormal Operation Or Indicator Does Not Illuminate | 22 | ||||
| ABS Warning | Abnormal Operation Or Warning Does Not Illuminate | 23 | ||||
| Hi-Beam Indicator | Abnormal Operation Or Indicator Does Not Illuminate | 24 | ||||
| Turn Signal Indicator | Abnormal Operation Or Indicator Does Not Illuminate | 25 | ||||
| Window Washer Warning | Abnormal Operation Or Warning Does Not Illuminate | 26 | ||||
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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