Dodge Dakota (ND). Manual — part 95
C1014-LEFT FRONT WHEEL SPEED COMPARATIVE PERFORMANCE (340) (CONTINUED)
For a complete wiring diagram Refer to Section 8W.
•
When Monitored:
With the ignition on, no system under voltage or over voltage condition present, no open or shorted wheel
speed sensor DTCs set, vehicle not under high acceleration, and vehicle speed greater than 0.
•
Set Condition:
This DTC will set if either one wheel is sensed above a predetermined range for 5000 msec while the other
wheels are below 20% of maximum velocity of all wheels OR if more than one wheel is sensed at below 20%
of maximum velocity of all wheels while at least one wheel is sensed above a predetermined range. The con-
dition must exist for 2 minutes for this DTC to set.
If the number of missing sensors changes at any update, the fault monitor is reset.
Possible Causes
INTERMITTENT LEFT FRONT WHEEL SPEED SENSOR DTC
(B9) LEFT FRONT WHEEL SPEED SENSOR SUPPLY CIRCUIT SHORT TO GROUND
(B8) LEFT FRONT WHEEL SPEED SENSOR SIGNAL CIRCUIT SHORT TO GROUND
(B9) LEFT FRONT WHEEL SPEED SENSOR SUPPLY CIRCUIT OPEN
(B8) LEFT FRONT WHEEL SPEED SENSOR SIGNAL CIRCUIT OPEN
(B9) LEFT FRONT WHEEL SPEED SENSOR SUPPLY CIRCUIT SHORTED TO VOLTAGE
(B8) LEFT FRONT WHEEL SPEED SENSOR SIGNAL CIRCUIT SHORTED TO VOLTAGE
(B9) LEFT FRONT WHEEL SPEED SENSOR SUPPLY CIRCUIT SHORTED TO THE (B8) LEFT FRONT WHEEL
SPEED SENSOR SIGNAL CIRCUIT
TONE WHEEL
EXCESSIVE LEFT FRONT WHEEL SPEED SENSOR AIR GAP
WHEEL BEARING
LEFT FRONT WHEEL SPEED SENSOR
ANTI-LOCK BRAKE MODULE
Diagnostic Test
1.
DTC IS ACTIVE
Turn the ignition on.
With the scan tool, clear DTCs.
Turn the ignition off.
Turn the ignition on.
With the scan tool, select View DTCs.
Is the status Active for this DTC?
Yes
>> Go To 2
No
>> Go To 15
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BRAKES - ABS ELECTRICAL DIAGNOSTICS
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C1014-LEFT FRONT WHEEL SPEED COMPARATIVE PERFORMANCE (340) (CONTINUED)
2.
WHEEL SPEED SENSOR INSPECTION
Turn the ignition off.
Inspect the Wheel Speed Sensor for proper mounting.
Inspect the Wheel Speed Sensor harness and connector.
Inspect the Wheel Speed Sensor for excessive debris on the sensor.
Were any problems found?
Yes
>> Repair as necessary in accordance with the Service Information.
Perform ABS VERIFICATION TEST - VER 1. (Refer to 5 - BRAKES/ELECTRICAL - DIAGNOSIS AND
TESTING)
No
>> Go To 3
3.
TONE WHEEL DAMAGED/MISSING
Inspect the Tone Wheel in accordance with the Service Information.
NOTE: The Tone Wheel Teeth should be perfectly square, not bent or nicked.
Were any problems found?
Yes
>> Replace the Tone Wheel in accordance with the Service Information.
Perform ABS VERIFICATION TEST - VER 1. (Refer to 5 - BRAKES/ELECTRICAL - DIAGNOSIS AND
TESTING)
No
>> Go To 4
4.
EXCESSIVE WHEEL SPEED SENSOR AIR GAP
Measure the Wheel Speed Sensor Air Gap in accordance with the Service Information.
Were any problems found?
Yes
>> Repair as necessary in accordance with the Service Information.
Perform ABS VERIFICATION TEST - VER 1. (Refer to 5 - BRAKES/ELECTRICAL - DIAGNOSIS AND
TESTING)
No
>> Go To 5
5.
WHEEL BEARING LOOSE/BINDING
Inspect the wheel bearings for excessive run out or improper clearance in accordance with the Service Information.
Were any problems found?
Yes
>> Repair as necessary in accordance with the Service Information.
Perform ABS VERIFICATION TEST - VER 1. (Refer to 5 - BRAKES/ELECTRICAL - DIAGNOSIS AND
TESTING)
No
>> Go To 6
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BRAKES - ABS ELECTRICAL DIAGNOSTICS
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C1014-LEFT FRONT WHEEL SPEED COMPARATIVE PERFORMANCE (340) (CONTINUED)
6.
(B9) LEFT FRONT WHEEL SPEED SENSOR SUPPLY CIRCUIT SHORTED TO GROUND
Turn the ignition off.
Disconnect the Left Front Wheel Speed Sensor harness connector.
Disconnect the Anti-lock Brake Module harness connector.
NOTE: Check connector - Clean/repair as necessary.
Measure the resistance between the (B9) Left Front Wheel Speed
Sensor Supply circuit and ground.
Is the resistance above 5.0 ohms?
Yes
>> Go To 7
No
>> Repair the (B9) Left Front Wheel Speed Sensor Supply
circuit for a short to ground.
Perform ABS VERIFICATION TEST - VER 1. (Refer to 5 -
BRAKES/ELECTRICAL - DIAGNOSIS AND TESTING)
7.
(B8) LEFT FRONT WHEEL SPEED SENSOR SIGNAL CIRCUIT SHORTED TO GROUND
Measure the resistance between the (B8) Left Front Wheel Speed
Sensor Signal circuit and ground.
Is the resistance above 5.0 ohms?
Yes
>> Go To 8
No
>> Repair the (B8) Left Front Wheel Speed Sensor Signal cir-
cuit for a short to ground.
Perform ABS VERIFICATION TEST - VER 1. (Refer to 5 -
BRAKES/ELECTRICAL - DIAGNOSIS AND TESTING)
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BRAKES - ABS ELECTRICAL DIAGNOSTICS
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C1014-LEFT FRONT WHEEL SPEED COMPARATIVE PERFORMANCE (340) (CONTINUED)
8.
(B9) LEFT FRONT WHEEL SPEED SENSOR SUPPLY CIRCUIT OPEN
Measure the resistance of the (B9) Left Front Wheel Speed Sensor
Supply circuit.
Is the resistance below 5 ohms?
Yes
>> Go To 9
No
>> Repair the open (B9) Left Front Wheel Speed Sensor Sup-
ply circuit.
Perform ABS VERIFICATION TEST - VER 1. (Refer to 5 -
BRAKES/ELECTRICAL - DIAGNOSIS AND TESTING)
9.
(B8) LEFT FRONT WHEEL SPEED SENSOR SIGNAL CIRCUIT OPEN
Measure the resistance of the (B8) Left Front Wheel Speed Sensor
Signal circuit.
Is the resistance below 5 ohms?
Yes
>> Go To 10
No
>> Repair the open (B8) Left Front Wheel Speed Sensor Sig-
nal circuit.
Perform ABS VERIFICATION TEST - VER 1. (Refer to 5 -
BRAKES/ELECTRICAL - DIAGNOSIS AND TESTING)
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BRAKES - ABS ELECTRICAL DIAGNOSTICS
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