Spicer TPCS Troubleshooting Guide: Older Systems (ECU's w_Dual Connectors) - Manual (Page 24)

24
Troubleshooting
Code Description
Code 3C! indicates a faulty speed sensor signal which can be set by one
of two conditions:
• A wiring or sensor connection may cause a 3C! fault after
approximately 15 seconds. Likely causes are wiring problems or
bad connec tions.
• A mis­adjusted or faulty sensor may cause a 3C! fault after 15 to 20
ignition key cycles without any speed signal.
Note: This fault may occur if ignition has been cycled
15 to 20 times without moving the vehicle.
See “Troubleshooting Tips” on page 20 for general guidelines on system
diagnostics.
Code:
3C!
Type:
Speed Sensor