Instrument Cluster Test 4B - Speedometer Not Operating Properly
NOTE:
Perform INSTRUMENT CLUSTER TEST 4A
before proceeding. For connector terminal ID, see CONNECTOR IDENTIFICATION
and WIRING DIAGRAM and INSTRUMENT PANEL
article. Perform TEST VER-1A
after each repair.
CAUTION:
Always turn ignition switch to OFF position prior to disconnecting any module connector. Ensure all connectors are clean and tight.
- Raise and support vehicle. Remove speedometer pinion gear from transmission. Count number of teeth on pinion gear and compare to specification. See SPEEDOMETER PINION GEAR APPLICATION table. Replace pinion gear if gear teeth do not match tire size and axle ratio. If correct pinion gear is installed, go to next step.
- Reinstall pinion gear. Start engine. Place transmission in gear. If speedometer moves to it's calibration points, system is operating properly at this time. If speedometer still does not move to it's calibration points, replace powertrain control module.
SPEEDOMETER PINION GEAR APPLICATION
| Tire Size | Axle Ratio | Pinion Teeth |
|---|---|---|
| P215/75R15 | 3.55 | 35 |
| P215/75R15 | 3.73 | 36 |
| P225/70R16 | 3.55 | 34 |
| P225/70R16 | 3.73 | 36 |
| P225/75R15 | 3.55 | 34 |
| P225/75R15 | 3.73 | 36 |
| P245/70R15 | 3.55 | 34 |
| P245/70R15 | 3.73 | 35 |