Troubleshooting Hints - Gauges and Warning Indicators

PERFORM BEFORE BEGINNING SYSTEM DIAGNOSIS
1. Check IG Fuse with a fuse tester.
2. Check that grounds G105 and G400 are clean and tight.
3. Check that engine coolant level is adequate for Engine Coolant Temperature (ECT) Gage operation. Cooling System
4. Before component replacement, check for poor connections at related component and in-line harness connector terminal connections.