Spicer TPCS Troubleshooting Guide: Older Systems (ECU's w_Dual Connectors) - Manual (Page 22)

22
Troubleshooting
Code Description
Code 1C! indicates a power fault and sets when the system power is
outside the acceptable range of 9 to 32 Volts. The fault could be caused
by low battery power or some other problem with the basic vehicle
electrical system.
If the vehicle power system checks out satisfactorily, other possible
causes include bad Electronic Control Unit (ECU) connections, a relay
problem, or a faulty Electronic Control Unit.
In inspecting circuits and connections for a Code 1C! fault, pay
particular attention to a bad ground connec tion, which could be causing
the fault.
See “Troubleshooting Tips” on page 20 for general guidelines on system
diagnostics.
Code:
1C!
Type:
Power