Spicer CTIS (Central Tire Inflation System) Troubleshooting Guide - Manual (Page 59)

56
Service Codes
Wheel V
alve Shut Off
(Codes 61, 62, 64, 65)
Wheel Valve Shut Off (Codes 61, 62, 64, 65)
Codes:
Front (61)
Rear (62)
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?
Identify leaking wheel valve
and rebuild or replace.
Perform checkout test.
Repair restrictions and
perform checkout test.
Codes:
Front (64)
Rear (65)
Wheel valve closure (major)
Codes 64, 65
Codes 61, 62
Yes No
Identify leaking wheel valve
and rebuild or replace.
Perform checkout test.