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.
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HOMESERVICE MANUALSSATURN2000LS AUTOMATICREPAIR AND DIAGNOSISELECTRICALGAUGESANALOG INSTRUMENT PANELSSELF-DIAGNOSTIC SYSTEMINSTRUMENT CLUSTER DIAGNOSTIC SYSTEM CHECK
2000 Saturn LS Automatic
Instrument Cluster Diagnostic System Check
2000 Saturn LS AutomaticSECTION Instrument Cluster Diagnostic System Check
NOTE:
Instrument cluster diagnostic system check is designed to locate an instrument cluster fault. For best results, follow the procedure and see appropriate INSTRUMENT CLUSTER CONTROL SIGNALS table to repair appropriate symptom in SYSTEM TESTS.
- Turn ignition on while observing instrument cluster. If instrument cluster powers up and performs the 3 second telltale indicator ON test, go to next step. If instrument cluster does not power up and does not perform the 3 second telltale indicator ON test, check and repair power and ground circuits as necessary. See POWER DISTRIBUTION and GROUND DISTRIBUTION articles in WIRING DIAGRAMS.
- If one specific instrument cluster function does not operate, repair by symptom. See SYMPTOM INDEX table under SYSTEM TESTS. If more than one instrument cluster function does not operate, go to next step.
- See INSTRUMENT CLUSTER CONTROL SIGNALS ("L" SERIES) or INSTRUMENT CLUSTER CONTROL SIGNALS ("S" SERIES) tables to identify BCM and PCM functions. If BCM and/or PCM controlled instrument cluster functions are inoperative, repair BCM or PCM communications concern. See appropriate BODY CONTROL MODULES article. If all BCM and PCM controlled instrument cluster functions operate, go to next step.
- Connect scan tool to DLC. Using scan tool, perform gauges and telltale indicators test. If gauges and telltale indicators operate when commanded, problem is intermittent. Check for poor connections. If DRL or high beam telltale indicators do not illuminate when commanded on, check DRL or high beam telltale bulbs. If DRL and high beam telltale bulbs are okay, replace instrument cluster. If any other gauge and/or telltale indicator does not operate when commanded, replace instrument cluster.
INSTRUMENT CLUSTER CONTROL SIGNALS ("L" SERIES)
| Controlling Module | Instrument Cluster Function | ||||
|---|---|---|---|---|---|
| Body Control Module | (1) ABS Telltale Indicator | ||||
| (1) LOW TRACTION Telltale Indicator | |||||
| Battery Telltale Indicator | |||||
| BRAKE Telltale Indicator | |||||
| Coolant Temp Telltale Indicator | |||||
| Daytime Running Lights Telltale Indicator | |||||
| High Beam Telltale Indicator | |||||
| Coolant Level Telltale Indicator | |||||
| Low Fuel Telltale Indicator | |||||
| WASHER FLUID LOW Telltale Indicator | |||||
| CHANGE OIL SOON Telltale Indicator | |||||
| (2) SERVICE ENGINE SOON Telltale Indicator | |||||
| Oil Pressure Telltale Indicator | |||||
| REDUCED POWER Telltale Indicator | |||||
| SECURITY Telltale Indicator | |||||
| SERVICE (Wrench) Telltale Indicator | |||||
| Decklid/Liftgate Ajar Telltale Indicator | |||||
| (2) Speedometer | |||||
| Odometer | |||||
| (2) Tachometer | |||||
| Fuel Gauge | |||||
| Coolant Gauge | |||||
| Powertrain Control Module | SERVICE ENGINE SOON Telltale Indicator | ||||
| Speedometer | |||||
| Tachometer | |||||
| CHANGE OIL SOON Telltale Indicator | |||||
| Sensing & Diagnostic Module | AIR BAG Telltale Indicator | ||||
| Seat Belt Telltale Indicator | |||||
|
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INSTRUMENT CLUSTER CONTROL SIGNALS ("S" SERIES)
| Controlling Module | Instrument Cluster Function |
|---|---|
| Body Control Module | BRAKE Telltale Indicator |
| Daytime Running Lights Telltale Indicator | |
| High Beam Telltale Indicator | |
| Low Fuel Telltale Indicator | |
| Seat Belt Telltale Indicator | |
| SECURITY Telltale Indicator | |
| SERVICE (Wrench) Telltale Indicator | |
| Decklid/Liftgate Ajar Telltale Indicator | |
| Odometer | |
| Fuel Gauge | |
| Powertrain Control Module | SERVICE ENGINE SOON Telltale Indicator |
| Speedometer | |
| Tachometer | |
| Coolant Temperature Gauge | |
| CHANGE OIL SOON Telltale Indicator | |
| Oil Pressure Telltale Indicator | |
| Coolant Temperature Telltale Indicator | |
| LOW TRACTION Telltale Indicator | |
| Coolant Level Telltale Indicator | |
| SERVICE (Wrench) Telltale Indicator | |
| Battery Telltale Indicator | |
| Upshift Telltale Indicator | |
| Sensing & Diagnostic Module | AIR BAG Telltale Indicator |
| Electronic Brake/Traction Control Module | BRAKE Telltale Indicator |
| ABS Telltale Indicator | |
| SERVICE (Wrench) Telltale Indicator | |
RENDER: 1.0x
NO RELATED
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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.