Bendix Commercial Vehicle Systems VORAD EVT-300 TROUBLESHOOTING - Manual (Page 88)

Fault Isolation Procedures
2-77
Code 31 (SID 250, FMI 2) J-1587 Data Link Error, continued
Step B Procedure Condition Action
1. Key off.
2. Measure resistance between:
• Central Processing
Unit 32-way
connector pin C8
and engine ECU pin
# (see engine OEM
for pin location).
• Central Processing
Unit 32-way pin C8
and ground.
If resistance between pin C8
and engine ECU pin is 0 to .3
ohms and if resistance
between pin C8 and ground
is more than 10K ohms or
open circuit [OL]
If resistance is outside of
range
Go to Step C.
Repair J-1587 data link wiring
harness between engine ECU
and Central Processing Unit.
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