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Troubleshooting Diagnostic Trouble Codes:
1st. Blink
Code
Wheel Speed Sensors
Location
2 Left Steer Axle Sensor
3 Right Steer Axle Sensor
4 Left Drive Axle Sensor
5 Right Drive Axle Sensor
14 Left Additional Axle Sensor
15Right Additional Axle Sensor
2nd. | Diagnostic |
|
Blink | Trouble Code | Repair Information |
Code | Description | |
1 | Excessive | Adjust sensor to contact exciter ring. Rotate wheel and verify a minimum of 0.25 |
| Air Gap | VAC sensor output at ~ 0.5 RPS. Verify condition of sensor head. Verify mounting |
|
| of exciter ring and condition of teeth. Verify proper bearing endplay. Verify condition |
|
| and retention of clamping sleeve. Verify sensor lead routing and clamping. |
2 | Output Low | Adjust sensor to contact exciter ring. Rotate wheel and verify a minimum of 0.25 |
| at | VAC sensor output at ~ 0.5 RPS. Verify condition of sensor head. Verify mounting |
|
| of exciter ring and condition of teeth. Verify proper bearing |
|
| condition and retention of clamping sleeve. Verify sensor lead routing and |
|
| clamping. |
3Open or Shorted
4Loss of Sensor Signal
5Wheel End
6Erratic Sensor Signal
7Tire Size Calibration
8Configuration Error
Verify 1500 – 2500 ohms across sensor leads. Verify no continuity between sensor leads and ground or voltage. Verify no continuity between sensor leads and other sensors. Check for corroded/damaged wiring or connectors between the ECU and the wheel speed sensor.
Adjust sensor to contact exciter ring. Rotate wheel and verify a minimum of 0.25 VAC sensor output at ~ 0.5 RPS. Verify condition of sensor head. Verify mounting of exciter ring and condition of teeth. Verify proper bearing
Verify mounting of exciter ring and condition of teeth. Verify proper bearing end- play. Verify condition and retention of clamping sleeve. Verify sensor lead routing and clamping. Check mechanical function of brake. Check for kinked or restricted air lines.
Adjust sensor to contact exciter ring. Rotate wheel and verify a minimum of 0.25 VAC sensor output at ~ 0.5 RPS. Verify condition of sensor head. Verify mounting of exciter ring and condition of teeth. Verify proper bearing
Verify correct tire size as desired. Verify proper tire inflation. Verify correct number of exciter ring teeth.
ECU is configured for four sensors, but has detected the presence of additional sensors. Verify sensor wiring and ECU configuration.
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