Navistar Electrical Systems CV
Integration Guide
Page 65 of 84
Revision Date: 9/12/2019
Table 9.1.4: EMC Troubleshooting
EMC Troubleshooting Chart
Step
Action
Yes
No
1
Can you reproduce the concern?
Go to
Step 2
Must be
able to
reproduce
the
concern.
2
Is the vehicle equipped with aftermarket
accessories such as radar detectors, remote
starters, radio transceivers, etc.
Go to
Step 3
Go to Step
6
3
Remove or disable the accessories.
Is the concern related to the operation of such
accessories?
Go to
Step 4
Go to Step
6
4
Check for ground points and correct cable routing
and antenna location.
Does the installation conform to Navistar
guidelines?
Go to
Step 6
Go to Step
5
5
Correct the installation.
Is the concern eliminated?
Concern
resolved
Go to Step
6
6
Gather the following information:
The radio frequencies involved
Engine ON or OFF
Is the concern intermittent
Does a Service Bulletin or P.I. exist dealing with
this concern?
Go to
Step 7
Go to Step
8
7
Perform the procedure from the service bulletin or
P.I.
Is the concern eliminated?
Concern
resolved
Go to Step
8
8
Identify additional EMC parameters.
Is the accessory defective?
Go to
Step 9
Go to Step
10
9
Repair/replace the component.
Concern
resolved
Go to Step
10