Fault Isolation Procedures

Code 33 (SID 248, FMI 12) VBUS Error, continued

Step B

Procedure

Condition

Action

 

 

 

 

1.Key off.

2.Measure resistance between:

• Central Processing Unit 32-way connector pin C6 and Antenna 4-way connector pin 1.

Central Processing Unit 32-way pin C6 and ground.

If resistance between pin C6 and pin 1 is 0 to .3 and

if resistance between pin C6 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 Antenna and Central Processing Unit. Go to Step V.

DC

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15 16

 

OHMS

 

V

COM

A

DC

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15 16

 

OHMS

 

V

COM

A

GROUND

1

2

4

3

2-83

Page 94
Image 94
BENDIX BW2849 manual Step B, If any of the above conditions are not met Go to Step C