Dodge Caliber. Manual — part 134
C123F–STEERING ANGLE SENSOR COMPARATIVE PERFORMANCE
For a complete wiring diagram Refer to Section 8W.
•
When Monitored:
With ignition on, but not if a checksum failure of the stored offset values is detected.
Or, a CAN time-out failure is detected.
Or, a failure is detected by the Steering Angle Sensor.
•
Set Condition:
If the Anti-Lock Brakes Module detects that either the calculated steering wheel angle offset or the steering
wheel angle signal measured output is out of range.
Possible Causes
VEHICLE DAMAGE
STEERING COLUMN / INTERMEDIATE SHAFT DAMAGE
STEERING WHEEL ALIGNMENT
STEERING ANGLE SENSOR LOOSE
STEERING ANGLE SENSOR IMPROPERLY INSTALLED (WRONG MOUNTING POSITION)
STEERING ANGLE SENSOR
ANTI-LOCK BRAKE MODULE
Diagnostic Test
1.
PERFORM TEST DRIVE & VERIFY DTC IS STILL ACTIVE
NOTE: If present, diagnose and repair DTC C1219-STEERING ANGLE SENSOR ERRATIC PERFORMANCE,
C121A-STEERING ANGLE SENSOR NOT INITIALIZED, or C1240-STEERING ANGLE SENSOR OVERTRAVEL
PERFORMANCE before diagnosing this DTC.
Turn the ignition on.
With the scan tool, erase ABS DTCs.
Cycle the ignition switch.
WARNING: To avoid personal injury or death, check brake capability is available before road testing.
Test drive the vehicle by turning the vehicle left or right in a curving manner at a velocity between 10 and 25 km/hr
(6 and 15 m.p.h.).
Park the vehicle.
With the scan tool, read ABS DTCs.
Does this DTC reset?
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 VEHICLE, STEERING COLUMN, & INTERMEDIATE SHAFT FOR DAMAGE
NOTE: If possible, check vehicle repair history for collision damage.
Turn the ignition off.
Inspect the vehicle for damage causing tracking problems or steering wheel misalignment.
Inspect the steering column and intermediate shaft for damage.
Were any problems found?
Yes
>> Repair as necessary.
Perform ABS VERIFICATION TEST. (Refer to 5 - BRAKES - STANDARD PROCEDURE).
No
>> Go To 3
PM
BRAKES - ABS ELECTRICAL DIAGNOSTICS
5 - 237
3.
CHECK STEERING ANGLE SENSOR OUTPUT
Start the engine.
Turn the steering wheel so wheels point in a straight ahead position.
With the scan tool, read the Steering Angle Sensor position.
Is the Steering Angle Sensor Position within ± 15° degrees?
Yes
>> Go To 5
No
>> Go To 4
4.
CHECK STEERING ANGLE SENSOR INSTALLATION
WARNING: To avoid personal injury or death, on vehicles equipped with airbags, disable the supplemental
restraint system before attempting any steering wheel, steering column, airbag, occupant classification sys-
tem, seat belt tensioner, impact sensor, or instrument panel component diagnosis or service. Disconnect
and isolate the battery negative (ground) cable, then wait two minutes for the system capacitor to discharge
before performing further diagnosis or service. This is the only sure way to disable the supplemental
restraint system. Failure to take the proper precautions could result in accidental airbag deployment.
NOTE: Proper Steering Angle Sensor installation is crucial for proper operation.
Verify that the Steering Angle Sensor are properly installed.
Is the Steering Angle Sensor properly installed?
Yes
>> Go To 5
No
>> Repair as necessary and clear offsets by initializing ECU with wheels pointing straight ahead.
Perform ABS VERIFICATION TEST. (Refer to 5 - BRAKES - STANDARD PROCEDURE).
5.
RE-INITIALIZE THE ESP MODULE
Perform ECU initialization with drive test to clear offsets. Refer to Perform ABS VERIFICATION TEST. (Refer to 5 -
BRAKES - STANDARD PROCEDURE).
Is DTC C123F–STEERING ANGLE SENSOR COMPARATIVE PERFORMANCE still active?
Yes
>> Go To 6
No
>> Sensor was probably loose or calibrated with wheels not centered to vehicle. Test complete.
Perform the ABS VERIFICATION TEST. (Refer to 5 - BRAKES - STANDARD PROCEDURE).
6.
CHECK STEERING ANGLE SENSOR OUTPUT WHILE ROTATING THE STEERING WHEEL
With the scan tool, read the Steering Angle Sensor position while rotating the steering wheel to the right and then
to the left. The Steering Angle Sensor position should decrease when rotating the steering wheel to the right and
increase when rotating the steering wheel to the left.
Did the steering angle change accordingly?
Yes
>> Replace the Anti-Lock Brake Module in accordance with the Service Information.
Perform ABS VERIFICATION TEST. (Refer to 5 - BRAKES - STANDARD PROCEDURE).
No
>> Replace the Steering Angle Sensor in accordance with the Service Information and clear offsets by ini-
tializing ECU with wheels pointing straight ahead.
Perform the ABS VERIFICATION TEST. (Refer to 5 - BRAKES - STANDARD PROCEDURE).
5 - 238
BRAKES - ABS ELECTRICAL DIAGNOSTICS
PM
C1240–STEERING ANGLE SENSOR OVERTRAVEL PERFORMANCE
For a complete wiring diagram Refer to Section 8W.
•
When Monitored:
With ignition on, but not if a CAN time out failure is detected.
Or, if a fault is detected by the Steering Angle Sensor.
•
Set Condition:
If the Anti-Lock Brakes Module detects that the absolute value of the measured steering wheel angle is greater
than 720 degrees.
Possible Causes
VEHICLE DAMAGE
STEERING COLUMN / INTERMEDIATE SHAFT DAMAGE
STEERING WHEEL ALIGNMENT
STEERING ANGLE SENSOR LOOSE
STEERING ANGLE SENSOR IMPROPERLY INSTALLED (WRONG MOUNTING POSITION)
STEERING ANGLE SENSOR
ANTI-LOCK BRAKES MODULE
Diagnostic Test
1.
PERFORM TEST DRIVE & VERIFY DTC IS STILL ACTIVE
Turn the ignition on.
With the scan tool, erase ABS DTCs.
Cycle the ignition switch.
WARNING: To avoid personal injury or death, check brake capability is available before road testing.
Test drive the vehicle by turning the vehicle left or right in a curving manner at a velocity between 10 and 25 km/hr
(6 and 15 m.p.h.).
Park the vehicle.
With the scan tool, read ABS DTCs.
Does this DTC reset?
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 VEHICLE, STEERING COLUMN, & INTERMEDIATE SHAFT FOR DAMAGE
NOTE: If possible, check vehicle repair history for collision damage.
Turn the ignition off.
Inspect the vehicle for damage causing tracking problems or steering wheel misalignment.
Inspect the steering column and intermediate shaft for damage.
Were any problems found?
Yes
>> Repair as necessary.
Perform ABS VERIFICATION TEST. (Refer to 5 - BRAKES - STANDARD PROCEDURE).
No
>> Go To 3
PM
BRAKES - ABS ELECTRICAL DIAGNOSTICS
5 - 239
3.
CHECK STEERING ANGLE CHANGE
Turn steering wheel so wheels point in a straight ahead position.
With scan tool check steering angle if reading travels to 720 degrees whiling rotating wheel from lock to lock.
NOTE: Sensor damage can occur if wheel is turned over 720 degrees.
Rotate steering wheel to the right and the degrees will decrease and rotating steering wheel to the left the degrees
will increase.
Did the steering angle change accordingly and display less the 720 degrees from lock to lock?
Yes
>> Go To 4
No
>> Replace the Steering Angle Sensor in accordance with the Service Information and clear offsets by ini-
tializing ECU with wheels pointing straight ahead.
Perform ABS VERIFICATION TEST. (Refer to 5 - BRAKES - STANDARD PROCEDURE).
4.
CHECK STEERING ANGLE SENSOR INSTALLATION
WARNING: To avoid personal injury or death, on vehicles equipped with airbags, disable the supplemental
restraint system before attempting any steering wheel, steering column, airbag, occupant classification sys-
tem, seat belt tensioner, impact sensor, or instrument panel component diagnosis or service. Disconnect
and isolate the battery negative (ground) cable, then wait two minutes for the system capacitor to discharge
before performing further diagnosis or service. This is the only sure way to disable the supplemental
restraint system. Failure to take the proper precautions could result in accidental airbag deployment.
NOTE: Proper Steering Angle Sensor installation is crucial for proper operation.
Verify that the Steering Angle Sensor are properly installed. Refer to 8 - ELECTRICAL/RESTRAINTS/CLOCK-
SPRING - INSTALLATION.
Is the Steering Angle Sensor properly installed?
Yes
>> Replace the Steering Angle Sensor and clear offsets by initializing ECU with wheels pointing straight
ahead, in accordance with the Service Information.
Perform ABS VERIFICATION TEST. (Refer to 5 - BRAKES - STANDARD PROCEDURE).
No
>> Repair as necessary and clear offsets by initializing ECU with wheels pointing straight ahead.
Perform ABS VERIFICATION TEST. (Refer to 5 - BRAKES - STANDARD PROCEDURE).
5 - 240
BRAKES - ABS ELECTRICAL DIAGNOSTICS
PM
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