Dodge Sprinter. Manual — part 447
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)
TEST
ACTION
APPLICABILITY
2
Turn the ignition off.
Inspect the CAB harness connector and affected Wheel Speed Sensor.
Inspect for looseness.
Inspect wiring harness.
Inspect for metal chips on sensor.
Is the Wheel Speed Sensor or CAB harness connector damaged?
All
Yes
→ Repair as necessary.
Perform ABS VERIFICATION TEST - VER 1.
No
→ Go To 3
3
Turn the ignition off.
Inspect the affected Wheel Speed Sensor(s) tone wheel for damage, looseness, or
missing.
NOTE: Refer to the appropriate Service information, if necessary, for
procedures or specifications.
Is the affected tone wheel OK?
All
Yes
→ Go To 4
No
→ Replace the tone wheel in accordance with the Service Informa-
tion.
Perform ABS VERIFICATION TEST - VER 1.
4
Turn the ignition off.
Inspect the affected Wheel Speed Sensor air gap.
NOTE: Refer to the appropriate Service information, if necessary, for
procedures or specifications.
Is the affected air gap OK?
All
Yes
→ Go To 5
No
→ Repair as necessary.
Perform ABS VERIFICATION TEST - VER 1.
5
Turn the ignition off.
Inspect the affected Wheel Speed Sensor(s) wheel bearing.
NOTE: Refer to the appropriate Service information, if necessary, for
procedures or specifications.
Is the affected wheel bearing clearance OK?
All
Yes
→ Go To 6
No
→ Repair as necessary.
Perform ABS VERIFICATION TEST - VER 1.
6
Turn the ignition off.
Visually inspect the brakes for locking up due to lining contamination or overheating.
Inspect all brake components for defects which would cause a speed difference.
Were any problems found?
All
Yes
→ Repair as necessary.
Perform ABS VERIFICATION TEST - VER 1.
No
→ Go To 7
47
BRAKES (CAB)
LEFT FRONT WHEEL SPEED SENSOR SIGNAL —
Continued
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