FREE REPAIR MANUALS & LABOR GUIDES 1982-2013 Vehicles
Courtesy of Operation CHARM: Car repair manuals for everyone.

Speed Pulses With Ignition Off

When Monitored: With the ignition off.

Set condition: The PBCM sees vehicle speed sensor signal pulses with the ignition off.

Possible Causes:
- Open fused ignition switch output to the PBCM
- Faulty module