Spicer CTIS (Central Tire Inflation System) Troubleshooting Guide - Manual (Page 21)

18
Diagnostics
Ser
vice Codes Summar
y
Service Codes Summary (continued)
Lights Sequentially
Flashing Code No. Causes (numbered in order of likely occurrence)
Configuration Error N/A CONFIGURATION ERROR (System is “Limp-Home”): System has reloaded the system
defaults, eliminating any changes (target pressures, etc.) previously programmed via
a diagnostic tool. Pressing HWY and RUN FLAT at the same time may clear the
display...updated config data should be reprogrammed.
1) Configuration connector loose or missing
2) Faulty ECU (if repeatedly occurs)
Solid Warning Lamp
or Solid OVER SPEED Code No. Causes (numbered in order of likely occurrence)
Speed Signal 18 NO SPEED SIGNAL (System operation is normal): ECU has been reset 25-50 times
without any speed input to ECU. Note: Fault will be set immediately on power up.
Any speed input (driving vehicle with good speed sense operation) will clear fault.
1) Vehicle has been started approximately 25-50 times without being moved (no
speed input).
2) Sensor is electrically disconnected
3) Either speed sense wire is open or shorted to ground
4) Faulty speed sensor
5) Sensor actuation failure (Tang broken/disconnected on mechanical sensor, or
incorrect gap on pole sensor)
6) Both speed sense wires are shorted together
76, 77 Expected data link message not received
No Indication or DDM
– Dashes "--" Code No. Causes (numbered in order of likely occurrence)
Miscellaneous Output 53, 57, 58,
67, 68 SPARE OUTPUT OR COMPONENT FAILURE:
1) Harness wire is shorted to ground
2) Harness wire is shorted to power
3) Faulty component
No Indication Code No. Causes (numbered in order of likely occurrence)
Wheel Valve Shut Off 61, 62, 64,
65 LOSS OF PRESSURE DURING SHUT OFF:
1) Wheel valve shut off failure
2) Air passage restriction