Spicer TPCS Troubleshooting Guide - Manual (Page 22)

19
Service Codes
Group: 1C! (Code 17)
Type: Power
Code Description
Group 1C! (17) indicates a power fault and sets when the sys-
tem 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, or a faulty Electronic Control Unit.
In inspecting circuits and connections for a Code 1C! fault,
pay particular attention to a bad ground connection that could
be causing the fault.
See "Troubleshooting Tips" for general guidelines on system
diagnostics.
System Mode Condition Possible Causes
(Listed in Likely Order of Occurrence)
No Operation Power out of range - Low battery voltage.
- Poor ground connection to Electronic Control Unit.
- Poor switched ignition connection to Electronic Control Unit.
- High vehicle electrical system voltage.
- Faulty Electronic Control Unit.
A B
G
3
2
1
A
A
B
B
C
C
C
D
D
D
E
E
E
F
F
F
G
G H J K
H
H
J
J
K
K
ECU Harness Connector