Dodge Nitro. Manual — part 223

2. Disconnect electrical connector (3) from the dynamics sensor (2).

3. Remove the two nuts (1) securing the sensor to the floor.

4. Remove the sensor (2).

INSTALLATION

SENSOR-DYNAMICS

Fig. 7: Identifying Nuts, Dynamics Sensor & Electrical Connector
Courtesy of CHRYSLER LLC

1. Install the dynamics sensor (2) to the vehicle.

2. Install the electrical connector (3) making sure that the connector is fully seated into the sensor (2)

3. Install the two retaining nuts (1) and tighten to 9 N.m (80 in. lbs.).

4. Install the floor console. Refer to INSTALLATION .

SENSOR-STEERING ANGLE

DESCRIPTION

SENSOR-STEERING ANGLE

Under transient cornering conditions the lateral acceleration sensor does not measure the true sway force on the
car. In order to compensate for this the system uses the driver's steering command (Steering angle sensor) and
vehicle speed to estimate the true sway force. This signal is matched with the lateral acceleration sensor signal
to ensure a significantly-reduced transient sway of the vehicle body.

REMOVAL

NOTE:

Steering angle sensor is part of the airbag clockspring and is not serviced
separately from the clockspring.

2007 Dodge Nitro R/T

2007 BRAKES ABS Service Information - Nitro

SENSOR-STEERING ANGLE

1. For removal of the steering angle sensor. Refer to REMOVAL .

INSTALLATION

SENSOR-STEERING ANGLE

1. For installation of the steering angle sensor. Refer to INSTALLATION .

ESP SWITCH

DESCRIPTION

SWITCH - ESP

Fig. 8: Identifying Instrument Panel Switches
Courtesy of CHRYSLER LLC

The ESP switch (5) is located in the center stack (1) of the instrument panel. If the switch is damaged or
inoperative the complete accessory switch bank assembly must be replaced.

REMOVAL

SWITCH - ESP

NOTE:

Steering angle sensor is part of the airbag clockspring and is not serviced
separately from the clockspring.

NOTE:

Steering angle sensor is part of the airbag clockspring and is not serviced
separately from the clockspring.

WARNING:

On vehicles equipped with airbags, disable the airbag system before

2007 Dodge Nitro R/T

2007 BRAKES ABS Service Information - Nitro

Fig. 9: Identifying Center Bezel, Screws & Accessory Switch Bank
Courtesy of CHRYSLER LLC

1. Disconnect and isolate the battery negative cable.

2. Remove the center bezel from the instrument panel, refer to REMOVAL .

3. Remove the four screws (2) that secure the accessory switch bank (3) to the back of the center bezel (1)

and remove the switch bank.

INSTALLATION

SWITCH - ESP

attempting any steering wheel, steering column, or instrument panel
component diagnosis or service. Disconnect and isolate the negative
battery (ground) cable, then wait two minutes for the airbag system
capacitor to discharge before performing further diagnosis or service.
This is the only sure way to disable the airbag system. Failure to take the
proper precautions could result in accidental airbag deployment and
possible personal injury or death.

NOTE:

The ESP switch is integral to the accessory switch bank and cannot be serviced
separately. The complete accessory switch bank assembly must be replaced.

2007 Dodge Nitro R/T

2007 BRAKES ABS Service Information - Nitro

Fig. 10: Identifying Center Bezel, Screws & Accessory Switch Bank
Courtesy of CHRYSLER LLC

1. Position the accessory switch bank (3) onto the back of the instrument panel center bezel (1).

2. Install the four screws (2) that secure the accessory switch bank to the center bezel. Tighten the screws to

2 N.m (17 in. lbs.).

3. Install the center bezel onto the instrument panel, refer to INSTALLATION .

4. Connect the battery negative cable.

5. Verify ESP system operation.

HYDRAULIC/MECHANICAL

HCU (HYDRAULIC CONTROL UNIT)

DESCRIPTION

HYDRAULIC CONTROL UNIT

The HCU consists of a valve body, pump motor, and wire harness.

OPERATION

HYDRAULIC CONTROL UNIT

Accumulators in the valve body store extra fluid released to the system for ABS mode operation. The pump
provides the fluid volume needed and is operated by a DC type motor. The motor is controlled by the ABM.

The valves modulate brake pressure during antilock braking and are controlled by the ABM.

NOTE:

There are different accessory switch banks available based on the option
content of the vehicle. Ensure the switch pod being installed matches the
vehicle options.

2007 Dodge Nitro R/T

2007 BRAKES ABS Service Information - Nitro