Initial Inspection and Diagnostic Overview

1. Tachometer does not operate, or indicates improperly.
- Check the tachometer.
2. Fuel gauge does not operate, or indicates improperly.
- Check the tachometer.
- Check the fuel gauge.
- Check the fuel gauge unit.
3. Engine coolant temperature gauge does not operate, or indicates improperly.
- Check the engine coolant temperature gauge
- Check the engine coolant temperature gauge unit.
4. Speedometer does not operate.
1. Auto-cruise control system does not operate.
- Check the vehicle speed sensor
- Check the input speed sensor
- Check the output speed sensor
2. Systems other than auto-cruise control do not operate.
- Check the speedometer.