4000 - 4999: 4550

4550-WHEEL SPEED SENSOR - RPM IMPLAUSIBLE SIGNAL ON 3 SENSORS

For a complete wiring diagram Consult Diagrams/Electrical

- When Monitored:
Continuously with the ignition on, one invalid message received at least once.

- Set Condition:
When the Anti-Lock Brake Module detects two incorrect wheel speed sensor signals for approximately 200 mSec.





1. CHECK IF 4550 WHEEL SPEED - RPM IMPLAUSIBLE SIGNAL ON 3 SENSORS DTC IS PRESENT
With the scan tool, read the DTCs.
Is DTC 4550 Wheel Speed - RPM Implausible Signal On 2 Sensors present?

Yes

- Go To 2

No

- Refer to the ABS-INTERMITTENT CONDITION TEST.

2. WHEEL SPEED SENSOR DTCS
With the scan tool, read the DTCs.
Are any other Wheel Speed Sensor DTCs present?

Yes

- Refer to appropriate wheel speed sensor diagnostic procedure.
- Perform ABS VERIFICATION TEST. Verification Tests.

No

- Replace the Anti-Lock Brakes Module.
- Perform ABS VERIFICATION TEST. Verification Tests.