Spicer TPCS Troubleshooting Guide - Manual (Page 53)

50
Service Codes
Group: 12P! (Codes 61,
62
, 63
, 64
, 65
, 66
)
Wheel Valve Shut Off
(Codes 61, 62, 63, 64, 65, 66)
Codes:
Front (61)
Rear (62)
Trailer (63)
Wheel valve closure (minor)
Stop vehicle and connect the
diagnostic tool to the system.
Which codes
are identified?
Check airflow and look for restrictions
between the wheel valve and PCU.
Were
restrictions
found?
Replace wheel valve and
perform checkout test.
Repair restrictions and
perform checkout test.
Codes:
Front (64)
Rear (65)
Trailer (66)
Wheel valve closure (major)
Codes 64, 65, 66
Codes 61, 62, 63
Yes No