Spicer TPCS Troubleshooting Guide - Manual (Page 56)

53
Service Codes
Condition
Operating problems that do not
trigger a service code.
Possible Causes*
Since a service code was not set, these
conditions may be universal and not
call for a troubleshooting routine.
Service
Where fault codes appear, refer to the
troubleshooting procedures listed
under that code.
OTHER
Apparent continuous operation, or
slow inflates or deflates.
- Tire(s) leakage.
- Between mode.
- Trend fault.
Follow troubleshooting for 4P!, 9P!, and
10P! group.
System stopped in middle of inflate or
deflate (display shows completion
before reaching targeted pressures). Intermittent Pneumatic Control Unit
sensor, short, or open.
Follow troubleshooting for 5C! group.
Wheel end oil leak. Faulty air or oil seal. Refer to Service Manual.
Trailer present, not detected. - Disconnected trailer air line connector.
- Clogged trailer air lines.
- Crimped control line on trailer channel.
Refer to Service Manual.
Trailer detected, not present. - Trailer connector on tractor side
doesn't seal when disconnected.
- Leaking line between Pneumatic
Control Unit and trailer air line
connector.
Refer to Service Manual.
High reading (>100 psi) on trailer
channel with no trailer connected.
Leaking trailer connector. Refer to Service Manual.
No communications by the PC
diagnostic or handheld tool.
- No power to the communication
interface box (comm. box).
- No communications to comm. box.
- Faulty comm. box.
- Verify power to the communication
interface box (comm. box).
- Verify ECU connection to data link
(see wiring diagram).
- Try different comm. box.
* Possible causes are listed in order of likely occurrence.