Dodge Nitro. Manual — part 173

Rear WSS and Anti-Lock Brake Module for damage.

Is the Right Rear WSS loose or any of the wiring/connectors/terminals damaged?

Yes

Repair as necessary.

Perform ABS VERIFICATION TEST.

No

Go to 6).

6) CHECK RIGHT REAR WHEEL SPEED SENSOR FOR DAMAGE

Remove the Right Rear Wheel Speed Sensor.

Inspect the Right Rear Wheel Speed Sensor face for damage.

Is the Right Rear Wheel Speed Sensor damaged?

Yes

Replace sensor and hub assembly.

Perform ABS VERIFICATION TEST.

No

Go to 7).

7) CHECK RIGHT REAR TONE WHEEL/BEARING FOR DAMAGE

Inspect the Right Rear Tone Wheel/Bearing for damage, missing teeth, cracks, corrosion or looseness.

Is the Right Rear Tone Wheel/Bearing damaged?

Yes

Repair as necessary.

Perform ABS VERIFICATION TEST.

No

Go to 8).

8) RIGHT REAR WHEEL SPEED SENSOR

NOTE:

The Tone Wheel teeth should be perfectly square, not bent, or nicked.

2007 Dodge Nitro R/T

2007 BRAKES ABS - Electrical Diagnostics - Nitro

Replace the Right Rear Wheel Speed Sensor in accordance with the Service Information.

Perform ABS VERIFICATION TEST.

Road test the vehicle over 40 km/h (25 mph).

With the scan tool, read ABS DTCs.

Did DTC C1035-RIGHT REAR WHEEL SPEED COMPARATIVE PERFORMANCE reset?

Yes

Replace the Anti-Lock Brakes Module in accordance with the Service Information.

Perform ABS VERIFICATION TEST.

No

Test Complete.

C1041-LEFT FRONT TONE WHEEL PERFORMANCE

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS article.

When Monitored:

With the ignition on.

Set Condition:

When the Anti-Lock Brake Module detects periodic drops of a WSS signal.

Diagnostic Test

1) CHECK FOR A DTC C1041-LEFT FRONT TONE WHEEL PERFORMANCE

NOTE:

Vehicle must be driven above 40 km/h (25 mph) for set conditions to be
met.

Possible Causes

LEFT FRONT TONE WHEEL/BEARING DAMAGE
IMPROPER LEFT FRONT TIRE PRESSURE/MISMATCHED TIRES
DIRT, METAL, DAMAGED TONE WHEEL/SENSOR

NOTE:

This DTC must be active for the results of this test to be valid.

2007 Dodge Nitro R/T

2007 BRAKES ABS - Electrical Diagnostics - Nitro

Turn the ignition on.

With the scan tool, read DTCs.

Record DTC and Freeze Frame information.

With the scan tool, erase DTCs.

Cycle the ignition switch off then on.

Test drive the vehicle in a straight line to 40 km/h (25 mph).

With the scan tool, read DTCs.

Does the scan tool display: C1041-LEFT FRONT TONE WHEEL PERFORMANCE active?

Yes

Go to 3).

No

Go to 2).

2) CHECK WHEEL SPEED SENSOR SIGNALS

Turn the ignition on.

With the scan tool, monitor and graph ALL the WSS speeds and compare graph while an assistant drives
the vehicle.

Slowly accelerate as straight as possible from a stop to 40 km/h (25 mph).

Is the Left Front WSS speed showing 0 km/h (0 mph) or not matching other wheels or showing
erratic behavior?

Yes

CAUTION: Ensure brake capability is available before road testing.

NOTE:

Vehicle must be driven above 40 km/h (25 mph) for set conditions to be
met.

NOTE:

If graph shows periodic dropouts pay close attention to the tone wheel.

2007 Dodge Nitro R/T

2007 BRAKES ABS - Electrical Diagnostics - Nitro

Go to 3).

No

Refer to the ABS INTERMITTENT CONDITION.

3) CHECK FOR IMPROPER LEFT FRONT TIRE PRESSURE/MISMATCHED TIRES

Turn the ignition off.

Check and adjust the Left Front Tire pressure.

Check and adjust all other tire pressures.

Inspect for mismatched tires on vehicle.

Is the Left Front Tire improperly inflated or mismatched tires on vehicle?

Yes

Repair as necessary.

Perform ABS VERIFICATION TEST.

No

Go to 4).

4) CHECK THE LEFT FRONT TONE WHEEL/BEARING FOR DAMAGE

Check the Left Front Tone Wheel/Bearing for damage.

Check the Left Front Tone Wheel for dirt.

Was the tone wheel dirty?

Yes

Clean tone wheel and sensor. Clear codes and retest.

Perform ABS VERIFICATION TEST.

No

Replace the Left Front Tone Wheel/Bearing in accordance with the Service Information.

Perform ABS VERIFICATION TEST.

NOTE:

Check the tone wheel teeth for missing teeth, cracks, or looseness. Teeth
should be perfectly square, not bent, or nicked.

2007 Dodge Nitro R/T

2007 BRAKES ABS - Electrical Diagnostics - Nitro