P0500

P0500-NO VEHICLE SPEED SENSOR SIGNAL

For a complete wiring diagram, refer to the Wiring Information.

Theory of Operation

The Powertrain Control Module (PCM) receives information from the Anti-lock Brake System over the CAN C bus. The CAN C bus is a high speed communication bus that allows real time control capability between various controllers. Most messages are sent every 20 msec, this means critical information can be shared between multiple controllers almost instantaneously. The CAN C bus is a two wire bus with a CAN (+) and a CAN (-) circuit. To reduce the potential of radio and other electrical noise interference, the CAN Bus circuit wiring is manufactured using a twisted pair configuration within the electrical wiring harness.

- When Monitored:
With the engine running

- Set Condition:
The DTC will set if multiple ABS wheel speed signals are invalid.





Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. Pre-Diagnostic Troubleshooting Procedure.

Diagnostic Test

1. CHECK THE BCM FOR DTCS
1. With the scan tool, check for BCM DTCs.

Does the BCM report any U0001-CAN C BUS DTCs or U1706-87-LOST COMMUNICATION WITH ABS?

Yes

- Testing and Inspection and perform the diagnostic procedure for U0001-CAN C BUS DTC first if it is present.
- Perform the POWERTRAIN VERIFICATION TEST. Powertrain Verification Test.

No

- Go To 2

2. CHECK FOR ABS DTCS
1. With the scan tool, check for ABS DTCs.

Are there any ABS DTCs present?

Yes

- Perform the appropriate diagnostic procedure.
- Perform the POWERTRAIN VERIFICATION TEST. Powertrain Verification Test.

No

- Using the schematics as a guide, check the Powertrain Control Module (PCM) pins, terminals, and connectors for corrosion, damage, or terminal push out. Pay particular attention to all power and ground circuits. If no problems are found, replace and program the PCM.
- Perform the POWERTRAIN VERIFICATION TEST. Powertrain Verification Test.