User's Manual

Fault Isolation Procedures
2-63
Component Code: 24
(SID 6, FMI 2)
Speed Input Error
Overview
This fault code indicates an electrical problem in the speed source.
The signal from the road speed source did not match the current
operating conditions.
Detection
Starting at key on and throughout the operation, the Central
Processing Unit constantly monitors the feedback from the road
speed source. If the feedback is out of range the fault code is set.
Fallback
This fault causes a failure of the Bendix
™
VORAD
®
system.
Required Tools
• Basic Hand Tools
• Digital Volt/Ohm Meter
• Troubleshooting Guide
• PC-based or Hand-held Diagnostic Tool
Possible Causes
This fault code can be caused by any of the following:
• Central Processing Unit
• OEM Harness
• Speed Sensor
• J-1939 or J-1587
Harness
Central
Processing Unit