Spicer CTIS (Central Tire Inflation System) Troubleshooting Guide - Manual (Page 57)

54
Service Codes
Miscellaneous Output
(Codes 53, 57, 58, 67, 68)
Miscellaneous Output (Codes 53, 57, 58, 67, 68)
Replace faulty component
and retest system.
Use diagnostic tool to identify
which component to troubleshoot.
Switch off ignition.
Disconnect harness at
ECU connector and
component connector.
Are circuits
continuous?
Does fault
reoccur?
Verify associated ECU harness
pin is not shorted to ground and
is continuous to component.
Repair or replace harness. No
Yes
Yes
No
Code 53 – Flange
(Warning Lamp)
Check for continuity between:
ECU Harness Component Harness
Connector Pin Connector
E Warning Lamp
Check for continuity between:
ECU Harness Component Harness
Connector Pin Connector
E1 (Code 53) Component 1
E2 (Code 57) Component 2
E3 (Code 58) Component 3
J3 (Code 67) Component 4
Check for continuity between:
ECU Harness Component Harness
Connector Pin Connector
L (round connector)
or Buzzer
D3 (rectangular connector)
Code 68
(Buzzer)
Code 53 – Panel, Chassis
Codes 57, 58, 67
(OEM Specific)
Replace ECU and recheck system.
Note: ECUs are not a typical cause of problems. If
an ECU is replaced, the system should be carefully
rechecked to make sure the problem has been
fixed and does not reoccur.
Complete