FREE REPAIR MANUALS & LABOR GUIDES 1982-2013 Vehicles
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Test A: DTC C1445 - Vehicle Speed Signal Circuit Failure

Pinpoint Test A: DTC C1445 - Vehicle Speed Signal Circuit Failure

Normal Operation
For vehicles with air suspension, the powertrain control module (PCM) sends the vehicle speed information to the air suspension control module along circuit 679 (GY/BK). For vehicles without air suspension, the PCM sends the vehicle speed information to the variable assist power steering (VAPS) module along circuit 679 (GY/BK).

Possible Causes
^ Circuit open
^ Circuit shorted
^ Air suspension module
^ VAPS module

A1-A2:




A2-A3:




A3-A4: