Fault codes, Speed sensor troubleshooting – Bendix Commercial Vehicle Systems GEN 5 ABS User Manual

Page 25

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25

Fault Codes

X2 (Black)

5

Speed Sensor (-) Right Steer

6

Speed Sensor (+) Right Steer

7

Speed Sensor (-) Left Steer

8

Speed Sensor (+) Left Steer

X3 (Green)

1

Speed Sensor (-) Left Rear

2

Speed Sensor (+) Left Rear

3

Speed Sensor (-) Right Rear

4

Speed Sensor (+) Right Rear

X4 (Brown)

3

Speed Sensor (-) Left Rear Rear

*

6-channel

4

Speed Sensor (+) Left Rear Rear

*

Only

5

Speed Sensor (-) Right Rear Rear

*

6

Speed Sensor (+) Right Rear Rear

*

Harness Connector

PIN

Circuit Description

Harness Connector

PIN

Circuit Description

B (6-Way)

4

Speed Sensor (+) Left Steer

5

Speed Sensor (-) Left Steer

C (9-Way)

4

Speed Sensor (+) Right Steer

5

Speed Sensor (-) Right Steer

D (15-Way)

5

Speed Sensor (+) Left Rear

6

Speed Sensor (-) Left Rear

8

Speed Sensor (+) Right Rear

9

Speed Sensor (-) Right Rear

E (12-Way)

5

Speed Sensor (+) Left Rear Rear

*

6-channel

6

Speed Sensor (-) Left Rear Rear

*

Only

8

Speed Sensor (+) Right Rear Rear

*

9

Speed Sensor (-) Right Rear Rear

*

*

Not Used On Basic System

*

Not Used On Basic System

X2 Black

X3 Green

X4 Brown

X1 Grey

7
8
9

10
11
12

6
5
4
3
2
1

7
8
9

10
11
12

6
5
4
3
2
1

7
8
9

10
11
12

6
5
4
3
2
1

7
8
9

10
11
12

6
5
4
3
2
1

10

11

12

7

8

9

4

5

6

1

2

3

10

11

12

13

14

15

13

14

15

16

17

18

7

8

9

4

5

6

1

2

3

10

11

12

7

8

9

4

5

6

1

2

3

7

8

9

4

5

6

1

2

3

4

5

6

1

2

3

A

B

C

D

E

TOP - Looking into harness connector

Speed Sensor Resistance Test

The correct resistance for the speed sensor circuit is between 950 ohms and 1900 ohms.

Measure resistance at the wheel location to check the speed sensor.

Measure resistance at the appropriate ECU harness connector pins to check the cable and speed sensor.

Note: Refer to the chart for pin identification.

FIGURE 24 - Wheel Speed Sensor Harness Circuit Descriptions and Resistance Test

FIGURE 23 - Typical Wheel Speed Sensor Circuit

Speed Sensor Troubleshooting

Follow the steps listed below to locate and correct sensor
related ABS trouble codes.
1. Access active trouble code(s) using either the Blink

Code procedure, with ServiceRanger or the Hand-held
Tester procedure.

2. Lookup the code description, the possible causes and

the repair procedures provided in this section.

3. Perform the recommended repair procedures.
4. After the repairs are completed, clear all codes and

check for any additional codes.

5. If a sensor related trouble code has occurred, a code

17•12 will remain in the system until the vehicle has
been driven.

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