Power-up sequence test, continued, Step d procedure condition action – Bendix Commercial Vehicle Systems VORAD EVT-300 TROUBLESHOOTING User Manual
Page 19
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Fault Isolation Procedures
P
ow
er
-Up Sequence T
est
2-8
Power-Up Sequence Test, continued
Step D
Procedure
Condition
Action
1. Key off.
2. Measure resistance between:
• Central Processing
Unit 32-way
connector pin D4
and Driver Display
4-way connector
pin C.
• Central Processing
Unit 32-way
connector pin D4
and ground.
If resistance between pin D4
and pin C is 0 to .3 ohms and
if resistance between pin D4
and ground is more than 10K
ohms or open circuit [OL]
If any of the above conditions
are not met
Go to Step E.
Repair OEM wiring harness between
Driver Display Unit and Central
Processing Unit. Go to Step V.
1
C
D
2
3
4
5
6
7
8
9
10
11
12
13
14
16
15
1
C
D
2
3
4
5
6
7
8
9
10
11
12
13
14
16
15
D
C
B
A
OHMS
V
A
COM
OHMS
GROUND
V
A
COM
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