Tachometer Testing
- Disconnect Yellow/Blue wire from ignition coil and place a signal generator and tachometer tester between Yellow/Blue wire and ground.
- Compare tester and tachometer readings. Refer to the TACHOMETER SPECIFICATIONS table.
- If readings are within allowable range, fault may be ignition related. If readings are not within allowable range, replace instrument cluster assembly.
TACHOMETER SPECIFICATIONS
| Standard Indication (RPM) | Allowable Range (RPM) |
|---|---|
| 1000 | 1000-1050 |
| 2000 | 2000-2050 |
| 3000 | 3000-3050 |
| 4000 | 4000-4050 |
| 5000 | 5000-5050 |
| 6000 | 6000-6050 |