User's Manual

Fault Isolation Procedures
2-19
Component Code: 11, 12
(SID 254, FMI 4, 12)
Central Processing Unit (CPU)
Overview
This fault indicates an internal failure of the Central Processing
Unit.
Detection
The Central Processing Unit checks the program memory every
time the key is turned on. If the Central Processing Unit is able to
detect a failure within its own memory, it sets these fault codes.
Fallback
This fault causes a failure of the Bendix
™
VORAD
®
system.
Required Tools
• Basic Hand Tools
• Troubleshooting Guide
Possible Causes
• Central Processing Unit
Central
Processing Unit