Spicer TPCS Troubleshooting Guide: Older Systems (ECU's w_Dual Connectors) - Manual (Page 48)

48
Troubleshooting
Air Pressure Check
Note that the Tire Pressure Control System is not continuously
pressurized; pressure checks occur on a periodic basis. During tire
pressure checks, the system delivers compressed air to each channel
for approxi mately two seconds while monitoring the pressure in that
channel.
Code Description
Code 1OP! displays if a channel fails to confirm tire pressure. Following
an inflate or deflate of a given channel, the Tire Pressure Control System
will return to that channel to confirm, or “double­check” the new
pressure. If the pressure has dropped, the system will reinflate, and then
reconfirm that channel. After multiple confirmation attempts, the system
will log a 1OP! and the channel will become inoperative.
A confirmation failure can be caused by:
• Damaged or leaking tire
• Leaking air line between the wheel valve and tire
• Wheel valve failure.
To correctly diagnose the faulty component, connect the Diagnostic
Tool (see Section 5 for test equipment and descriptions) and follow the
procedure in the 10P! troubleshooting tree.
See “Troubleshooting Tips” on page 20 for general guidelines on system
diagnostics.
Code:
10P!
Type:
Tire Leak (Confirm)