Dodge Nitro. Manual — part 208

2007 Dodge Nitro R/T

2007 BRAKES ABS - Electrical Diagnostics - Nitro

Fig. 72: Measuring Resistance Of (D51) Dynamics Sensor Low Data Link Circuit Between
Dynamics Sensor Harness Connector And Anti-Lock Brakes Module Harness Connector
Courtesy of CHRYSLER LLC

Measure the resistance of the (D51) Dynamics Sensor Low Data Link circuit between the Dynamics
Sensor harness connector and the Anti-Lock Brakes Module harness connector.

Is the resistance below 5.0 ohms?

Yes

Replace the Dynamics Sensor in accordance with the Service Information.

Perform ABS VERIFICATION TEST.

No

Repair the (D51) Dynamics Sensor Low Data Link circuit for an open.

Perform ABS VERIFICATION TEST.

U0126-LOST COMMUNICATION WITH STEERING ANGLE SENSOR

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS article.

When Monitored:

With the ignition on

Battery voltage between 10 and 16 volts

IOD fuse installed

Set Condition:

If the Anti-Lock Brakes Module fails to receive bus messages from the Steering Angle Sensor for
approximately 500 ms.

Diagnostic Test

Possible Causes

DTCs RELATED TO BATTERY VOLTAGE, IGNITION, OR VIN MESSAGES
WIRING HARNESS, TERMINAL, CONNECTOR DAMAGE
(F202) FUSED B(+) CIRCUIT OPEN
(Z937) GROUND CIRCUIT OPEN
CAN C BUS CIRCUITS OPEN OR SHORTED
STEERING ANGLE SENSOR POWER AND GROUND
STEERING ANGLE SENSOR
ANTI-LOCK BRAKES MODULE

2007 Dodge Nitro R/T

2007 BRAKES ABS - Electrical Diagnostics - Nitro

1) VERIFY DTC IS ACTIVE

Turn the ignition on.

With the scan tool, read and record ABS DTCs.

With the scan tool, read and record Environmental Data (EV Data).

With the scan tool, erase ABS DTCs.

Cycle the ignition switch.

With the scan tool, read ABS DTCs.

Does this DTC reset?

Yes

Go to 2).

No

The condition that caused the symptom is currently not present. Inspect the related wiring for a
possible intermittent condition. Look for any chafed, pierced, pinched, or partially broken wires.

Refer to the ABS INTERMITTENT CONDITION.

2) CHECK FOR ANY OF THE FOLLOWING ACTIVE DTCs

With the scan tool, read all active DTCs from all CAN C Bus modules.

Does the scan tool display any active DTCs related to the conditions listed above?

Yes

Diagnose and repair the DTC(s). Refer to the DIAGNOSTIC CODE INDEX .

Perform BODY VERIFICATION TEST - VER 1 .

No

Go to 3).

NOTE:

Ensure the IOD fuse is installed and battery voltage is between 10 and 16
volts before proceeding.

NOTE:

Check for CAN C hardware electrical, VIN Missing/Mismatch, battery or
ignition related DTCs.

2007 Dodge Nitro R/T

2007 BRAKES ABS - Electrical Diagnostics - Nitro

3) VERIFY THAT THE STEERING ANGLE SENSOR IS ACTIVE ON THE BUS

With the scan tool, select ECU View.

Verify that the Steering Angle Sensor is active on the bus.

Is the Steering Angle Sensor active on the bus?

Yes

Go to 4).

No

Refer to the Stored Lost Communication test procedure. Refer to the DIAGNOSTIC CODE
INDEX .

Perform BODY VERIFICATION TEST - VER 1 .

4) CHECK THE WIRING HARNESS, TERMINALS, AND CONNECTORS

Check the Steering Angle Sensor installation.

Visually inspect the related wiring harness. Look for any bruised, chafed, pierced, or partially broken
wires.

Visually inspect the related wiring harness connectors. Look for broken, bent, pushed out, or corroded
terminals.

Were any problems found?

Yes

Repair as necessary.

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
system, 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.

2007 Dodge Nitro R/T

2007 BRAKES ABS - Electrical Diagnostics - Nitro