Mercedes-Benz Sprinter / Dodge Sprinter. Manual — part 87

Symptom List:

LEFT FRONT WHEEL SPEED SENSOR CIRCUIT
LEFT REAR WHEEL SPEED SENSOR CIRCUIT
RIGHT FRONT WHEEL SPEED SENSOR CIRCUIT
RIGHT REAR WHEEL SPEED SENSOR CIRCUIT

Test Note:

All symptoms listed above are diagnosed using the same tests.

The title for the tests will be LEFT FRONT WHEEL SPEED
SENSOR CIRCUIT.

When Monitored and Set Condition:

LEFT FRONT WHEEL SPEED SENSOR CIRCUIT

When Monitored:

Ignition On - Continuously

Set Condition:

When the value of the wheel speed sensor circuit is open or shorted.

POSSIBLE CAUSES

INTERMITTENT WHEEL SPEED SENSOR CIRCUIT DTC

DAMAGED CAB/CAB HARNESS CONNECTOR

WHEEL SPEED SENSOR CIRCUIT SHORT TO VOLTAGE

WHEEL SPEED SENSOR CIRCUIT SHORT TO GROUND

WHEEL SPEED SENSOR CIRCUIT OPEN

WHEEL SPEED SENSOR CIRCUITS SHORTED TOGETHER

ANTI-LOCK BRAKE CONTROLLER

TEST

ACTION

APPLICABILITY

1

NOTE: If a system undervoltage or overvoltage DTC is set along with this
DTC, diagnose the system voltage DTC first.
Turn the ignition on.
With the DRBIII

t, read DTCs.

With the DRBIII

t, erase DTCs.

Turn the ignition off.
Turn the ignition on.
With the DRBIII

t, read DTCs.

Does the DRBIII

t display any WHEEL SPEED SENSOR CIRCUIT DTCs?

All

Yes

→ Go To 2

No

→ Go To 7

43

BRAKES (CAB)

TEST

ACTION

APPLICABILITY

2

Turn the ignition off.
Disconnect the CAB harness connector.
Inspect the CAB/CAB harness connector for damage.
Is there any broken, bent, pushed out, corroded or spread terminals?

All

Yes

→ Repair as necessary.

Perform ABS VERIFICATION TEST - VER 1.

No

→ Go To 3

3

Turn the ignition off.
Disconnect the CAB harness connector.
Turn the ignition on.
Measure the voltage of both affected Wheel Speed Sensor circuits in the CAB harness
connector.
NOTE: If the wheel is rotating, voltage will be present.
Is there any voltage present?

All

Yes

→ Repair the affected Wheel Speed Sensor circuit for a short to

voltage.
Perform ABS VERIFICATION TEST - VER 1.

No

→ Go To 4

4

Turn the ignition off.
Disconnect the CAB harness connector.
Measure the resistance between ground and both affected Wheel Speed Sensor
circuits in the CAB harness connector.
Is the resistance below 5.0 ohms?

All

Yes

→ Repair the affected Wheel Speed Sensor circuit for a short to

ground.
Perform ABS VERIFICATION TEST - VER 1.

No

→ Go To 5

5

Turn the ignition off.
Disconnect the CAB harness connector.
Measure the resistance between the affected Wheel Speed Sensor circuits in the CAB
harness connector.
Is the resistance over 1,800 ohms?

All

Yes

→ Repair the affected Wheel Speed Sensor circuit for an open.

Perform ABS VERIFICATION TEST - VER 1.

No

→ Go To 6

6

Turn the ignition off.
Disconnect the CAB harness connector.
Measure the resistance between the affected Wheel Speed Sensor circuits in the CAB
harness connector.
Is the resistance under 1,100 ohms?

All

Yes

→ Repair the affected Wheel Speed Sensor circuits for a short to

each other.
Perform ABS VERIFICATION TEST - VER 1.

No

→ Replace the Controller Antilock Brake in accordance with the

Service Information.
Perform ABS VERIFICATION TEST - VER 1.

44

BRAKES (CAB)

LEFT FRONT WHEEL SPEED SENSOR CIRCUIT —

Continued

TEST

ACTION

APPLICABILITY

7

Turn the ignition off.
Visually inspect the related wiring harness.
Look for any chafed, pierced, pinched, or partially broken wires.
Look for broken, bent, pushed out, or corroded terminals.
Were any problems found?

All

Yes

→ Repair as necessary.

Perform ABS VERIFICATION TEST - VER 1.

No

→ Test Complete.

45

BRAKES (CAB)

LEFT FRONT WHEEL SPEED SENSOR CIRCUIT —

Continued

Symptom List:

LEFT FRONT WHEEL SPEED SENSOR SIGNAL
LEFT REAR WHEEL SPEED SENSOR SIGNAL
RIGHT FRONT WHEEL SPEED SENSOR SIGNAL
RIGHT REAR WHEEL SPEED SENSOR SIGNAL
WHEEL SPEED SENSOR SIGNAL ERROR

Test Note:

All symptoms listed above are diagnosed using the same tests.

The title for the tests will be LEFT FRONT WHEEL SPEED
SENSOR SIGNAL.

When Monitored and Set Condition:

LEFT FRONT WHEEL SPEED SENSOR SIGNAL

When Monitored:

Ignition On - Continuously

Set Condition:

When the value of the wheel speed sensor signal is missing at vehicle

speeds over 40 km/h (25 mph) OR during a start-up test with vehicle speeds over 12km/h
(8 mph) OR the vehicle is accelerated by 18 km/h (12 mph) after a wheel speed sensor
signal has been lost.

POSSIBLE CAUSES

INTERMITTENT WHEEL SPEED SENSOR SIGNAL DTC

DAMAGED SENSOR/CAB HARNESS CONNECTOR

DAMAGED WHEEL SPEED SENSOR TONE WHEEL

EXCESSIVE WHEEL SPEED SENSOR AIR GAP

DAMAGED WHEEL BEARING

DAMAGED BRAKE LININGS/COMPONENTS

WHEEL SPEED SENSOR FAILURE

ANTI-LOCK BRAKE CONTROLLER

TEST

ACTION

APPLICABILITY

1

NOTE: Refer to the symptom list and repair any WHEEL SPEED SENSOR
CIRCUIT DTCs before continuing.
Turn the ignition on.
With the DRBIII

t in Sensors, monitor ALL the Wheel Speed Sensor signals while an

assistant drives the vehicle.
Slowly accelerate from a stop to 65 km/h (40 mph).
NOTE: Wheel Speed should not vary by more than 10% from wheel to wheel
when driving in a straight line.
Do any of the Wheel Speed Sensor signals vary by greater than 10% while driving in
a straight line?

All

Yes

→ Go To 2

No

→ Go To 8

46

BRAKES (CAB)