Fault isolation procedures, Step b procedure condition action, Vorad – Bendix Commercial Vehicle Systems VORAD EVT-300 TROUBLESHOOTING User Manual
Page 80
Fault Isolation Procedures
2-69
Code 25, 32 (SID 231, FMI 2, 12, 14) J-1939 and Cruise Signal Error, continued
Step B
Procedure
Condition
Action
1. Key off.
2. Measure resistance between:
• The Bendix
™
VORAD
®
system Central
Processing Unit
32-way connector pin
D8 and engine ECU
pin # (see engine
OEM for pin
location).
• VORAD system
Central Processing
Unit 32-way pin D8
and ground.
If resistance between pin D8
and engine ECU pin is 0 to .3
ohms and if resistance
between pin D8 and ground
is more than 10K ohms or
open circuit [OL]
If resistance is outside of
range
If equipped with J-1939-Lite, go
to Step D. If not equipped with
J-1939-Lite, go to Step C.
Repair J-1939 data link wiring
harness between engine ECU
and VORAD system. Go to Step V.
OHMS
V
A
COM
1
C
D
2
3
4
5
6
7
8
9
10
11
12
13
14
16
15
GROUND
OHMS
V
A
COM
1
C
D
2
3
4
5
6
7
8
9
10
11
12
13
14
16
15
SEE ENGINE OEM
FOR PIN LOCATION