Spicer TPCS Troubleshooting Guide Manual de usuario Pagina 34

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Service Codes
Group: 2P! (Code 14)
Type: Deflate Trend
Code Description
Group 2P! is the result of a deflate that did not occur properly.
The system measures tire pressure before and after each
deflate. If the pressure readings indicate that the pressure
either increased or failed to drop properly, the system shuts
down the deflate sequence.
Group 2P! can be caused by:
Plugged or restricted control lines.
Plugged or restricted Pneumatic
Control Unit vent
line.
Contaminated or faulty Pneumatic Control Unit.
To identify the root cause of the problem, connect the
diagnostic tool (see Diagnostics Section for
test equipment
and descriptions) and follow the procedure in the 2P!
Troubleshooting Tree.
See "Troubleshooting Tips" for general
guidelines on system
diagnostics.
System Mode Condition Possible Causes
(Listed in Likely Order of Occurrence)
Inflate Only Pressure increased or failed
to drop appropriately
- Plugged or restricted control lines.
- Plugged or restricted Pneumatic Unit vent line.
- Plugged or restricted wheel valve exhaust port.
- Faulty Pneumatic Control Unit.
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