Dodge Caliber. Manual — part 124
•
When Monitored:
During active ABS control.
•
Set Condition:
If the Anti-Lock Brakes Module detects a pressure reduction phase and the following pressure hold phase is
too long.
Possible Causes
RIGHT FRONT TONE WHEEL DAMAGED
WHEEL SPEED SIGNALS SWAPPED
RIGHT FRONT WSS
ANTI-LOCK BRAKES MODULE
Diagnostic Test
1.
COMPARE WHEEL SPEED SENSOR SIGNALS
WARNING: To avoid personal injury or death, check brake capability is available before road testing.
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.).
Does the Right Front WSS speed differ from the other WSS speeds by 8 Km/h (5 m.p.h.) or show NO
speed?
Yes
>> Go To 2
No
>> Perform the ABS Intermittent Condition diagnostic procedure in this Section.
Refer to the ABS-INTERMITTENT CONDITION TEST. (Refer to 5 - BRAKES - DIAGNOSIS AND TEST-
ING)
2.
INSPECT TONE WHEEL/BEARING
Turn the ignition off.
Visually inspect the tone wheel and bearing for damage.
Check the tone wheel teeth for missing teeth, cracks, and looseness. The teeth must be perfectly square, not bent,
or nicked. Check the wheel bearing for worn/looseness.
Were any problems found?
Yes
>> Repair as necessary.
Perform ABS VERIFICATION TEST. (Refer to 5 - BRAKES - STANDARD PROCEDURE).
No
>> Go To 3
3.
CHECK WHEEL SPEED SENSOR WIRING
Check the Anti-Lock Brakes Module and Wheel Speed Sensors harness connectors for incorrectly wired connectors.
Were any problems found?
Yes
>> Repair as necessary.
Perform ABS VERIFICATION TEST. (Refer to 5 - BRAKES - STANDARD PROCEDURE).
No
>> Go To 4
PM
BRAKES - ABS ELECTRICAL DIAGNOSTICS
5 - 197
4.
RIGHT FRONT WHEEL SPEED SENSOR
Replace the Right Front Wheel Speed Sensor in accordance with the Service Information.
Perform ABS VERIFICATION TEST. (Refer to 5 - BRAKES - STANDARD PROCEDURE).
WARNING: To avoid personal injury or death, check brake capability is available before road testing.
Road test the vehicle over 40 km/h (25 m.p.h.).
NOTE: Vehicle must be driven above 40 km/h (25 m.p.h.) for set conditions to be meet.
With the scan tool, read ABS DTCs.
NOTE: The Anti-Lock Brake Module must sense ALL 4 wheels at 12 km/h (7.5 mph) before it will extinguish
the ABS indicators.
Did DTC C1047–RIGHT FRONT WHEEL PRESSURE PHASE MONITORING reset?
Yes
>> Replace the Anti-Lock Brakes Module in accordance with the Service Information.
Perform ABS VERIFICATION TEST. (Refer to 5 - BRAKES - STANDARD PROCEDURE).
No
>> Test Complete.
5 - 198
BRAKES - ABS ELECTRICAL DIAGNOSTICS
PM
C1048–LEFT REAR WHEEL PRESSURE PHASE MONITORING
For a complete wiring diagram Refer to Section 8W.
PM
BRAKES - ABS ELECTRICAL DIAGNOSTICS
5 - 199
•
When Monitored:
During active ABS control.
•
Set Condition:
If the Anti-Lock Brakes Module detects a pressure reduction phase and the following pressure hold phase is
too long.
Possible Causes
LEFT REAR TONE WHEEL/WHEEL BEARING
WHEEL SPEED SIGNALS SWAPPED
LEFT REAR WSS
ANTI-LOCK BRAKES MODULE
Diagnostic Test
1.
COMPARE WHEEL SPEED SENSOR SIGNALS
WARNING: To avoid personal injury or death, check brake capability is available before road testing.
With the scan tool, monitor ALL the WSS speeds while driving the vehicle.
Slowly accelerate as straight as possible from a stop to 40 km/h (25 m.p.h.).
Does the Left Rear WSS speed differ from the other WSS speeds by 8 Km/h (5 m.p.h.) or show NO
speed?
Yes
>> Go To 2
No
>> Perform the ABS Intermittent Condition diagnostic procedure in this Section.
Refer to the ABS-INTERMITTENT CONDITION TEST. (Refer to 5 - BRAKES - DIAGNOSIS AND TEST-
ING)
2.
INSPECT TONE WHEEL/BEARING
Turn the ignition off.
Visually inspect the tone wheel and bearing for damage.
Check the tone wheel teeth for missing teeth, cracks, and looseness. The teeth must be perfectly square, not bent,
or nicked. Check the wheel bearing for worn/looseness.
Were any problems found?
Yes
>> Repair as necessary.
Perform ABS VERIFICATION TEST. (Refer to 5 - BRAKES - STANDARD PROCEDURE).
No
>> Go To 3
3.
CHECK WHEEL SPEED SENSOR WIRING
Check the Anti-Lock Brakes Module and Wheel Speed Sensors harness connectors for incorrectly wired connectors.
Were any problems found?
Yes
>> Repair as necessary.
Perform ABS VERIFICATION TEST. (Refer to 5 - BRAKES - STANDARD PROCEDURE).
No
>> Go To 4
5 - 200
BRAKES - ABS ELECTRICAL DIAGNOSTICS
PM
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