Dodge Durango (HB). Manual — part 113
C107B–WHEEL SPEED COMPARATIVE PERFORMANCE
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BRAKES - ABS ELECTRICAL DIAGNOSTICS
5 - 231
C107B–WHEEL SPEED COMPARATIVE PERFORMANCE (CONTINUED)
For the Anti-Lock Brake System circuit diagram. (Refer to 5 - BRAKES - SCHEMATICS AND DIAGRAMS)
For a complete wiring diagram Refer to Section 8W.
•
When Monitored:
With the ignition on.
•
Set Condition:
When one or more WSS reading is different from the readings received from the other WSS’s. The Anti-Lock
Brake Module compares WSS readings from side-to-side on an axle and front-to-rear.
Possible Causes
WSS LOOSE - SIGNAL,SUPPLY CIRCUITS/CONNECTOR/TERMINAL DAMAGE
BRAKE SYSTEM FAULT
TONE WHEEL DAMAGE
WSS - INTERNAL FAULT
ANTI-LOCK BRAKE MODULE - INTERNAL FAULT
Diagnostic Test
1.
NOTE: This DTC must be active for the results of this test to be valid. CHECK FOR DTC C107B–WHEEL
SPEED COMPARATIVE PERFORMANCE
Turn the ignition on.
With the scan tool, record and erase DTC’s.
Cycle the ignition switch from off to on.
With the scan tool, read DTC’s
NOTE: The Anti-Lock Brake Module must sense ALL 4 wheels at
12 km/h (7.5 m.p.h.) before it will extinguish the ABS indicators.
Does the scan tool display: C107B–WHEEL SPEED COMPARA-
TIVE PERFORMANCE?
Yes
>> Go To 2
No
>> Refer to the INTERMITTENT CONDITION diagnostic pro-
cedure.
Perform ABS VERIFICATION TEST - VER 1.
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BRAKES - ABS ELECTRICAL DIAGNOSTICS
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C107B–WHEEL SPEED COMPARATIVE PERFORMANCE (CONTINUED)
2.
CHECK WHEEL SPEED SENSOR SIGNALS
Turn the ignition on.
With the scan tool, monitor ALL the WSS speeds while an assistant
drives the vehicle.
Slowly accelerate as straight as possible from a stop to 40 km/h (25
m.p.h.).
Is one or more WSS speeds showing 0 km/h (0 m.p.h.) or not
matching other wheel speeds?
Yes
>> Go To 3
No
>> Refer to the INTERMITTENT CONDITION diagnostic pro-
cedure.
Perform ABS VERIFICATION TEST - VER 1.
3.
CHECK WSS LOOSENESS, INSPECT SIGNAL,SUPPLY CIRCUITS/CONNECTORS/TERMINALS FOR
DAMAGE
NOTE: Check all terminals for broken, bent, pushed out, or cor-
roded terminals.
Turn the ignition off.
Inspect the Anti-Lock Brake Module harness connector, each WSS,
and each WSS harness connector.
Inspect each WSS for looseness and not properly fastened.
Inspect each WSS Signal and WSS Supply circuits between each
WSS and Anti-Lock Brake Module for damage.
Is any WSS loose or any of the wiring/connectors/terminals
damaged?
Yes
>> Repair as necessary.
Perform ABS VERIFICATION TEST - VER 1.
No
>> Go To 4
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BRAKES - ABS ELECTRICAL DIAGNOSTICS
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C107B–WHEEL SPEED COMPARATIVE PERFORMANCE (CONTINUED)
4.
CHECK BRAKE SYSTEM
Turn the ignition off.
Check the brake fluid level.
Check for trapped air in brake lines.
Inspect for brake fluid leakage on vehicle.
Inspect for loose mounted brake hardware.
Is any of the above conditions present?
Yes
>> Repair as necessary.
Perform ABS VERIFICATION TEST - VER 1.
No
>> Go To 5
5.
CHECK EACH TONE WHEEL FOR DAMAGE
Turn the ignition off.
Inspect each Tone Wheel for damage, missing teeth, cracks, or looseness.
NOTE: The Tone Wheel teeth should be perfectly square, not bent, or nicked.
Is the Tone Wheels damaged?
Yes
>> Repair as necessary.
Perform ABS VERIFICATION TEST - VER 1.
No
>> Go To 6
6.
ANTI-LOCK BRAKE MODULE – INTERNAL FAULT
Turn the ignition off.
Replace all WSS’s.
With the scan tool, erase DTC’s.
Road test the vehicle over 40 km/h (25 m.p.h.).
Turn the ignition on.
With the scan tool, read DTC’s
Did the DTC C107B–WHEEL SPEED COMPARATIVE PERFOR-
MANCE reset?
Yes
>> Replace the Anti-Lock Brake Module in accordance with
the Service Information.
Perform ABS VERIFICATION TEST - VER 1.
No
>> Test Complete.
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BRAKES - ABS ELECTRICAL DIAGNOSTICS
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