User's Manual

Fault Isolation Procedures
Code 33
(SID 248, FMI 12)
2-84
Code 33 (SID 248, FMI 12) VBUS Error, continued
Step C Procedure Condition Action
1. Key off.
2. Disconnect Central Processing
Unit 32-way connector.
3. Measure resistance between:
• Central Processing
Unit 32-way
connector pin D5
and Driver Display
4-way connector
pin B.
• Central Processing
Unit 32-way
connector pin D5
and ground.
If resistance between pin D5
and pin B is 0 to .3 ohms and
if resistance between pin D5
and ground is more than 10K
ohms or open circuit [OL]
If any of the above conditions
are not met
Go to Step C.
Repair OEM wiring harness
between Driver Display Unit
and Central Processing Unit.
Go to Step V.
OHMS
V ACOM
OHMS
GROUND
V ACOM
1
CD
2
3
4
5
6
7
8
9
10
11
12
13
14
16
15
1
CD
2
3
4
5
6
7
8
9
10
11
12
13
14
16
15
D C B A