Hummer H3. Manual — part 630

applied to the wheels.

Digital Steering Position Sensor

The scan tool displays the digital steering position angle in degrees.

Lateral Accelerometer Input

The scan tool displays the sidways acceleration of the vehicle in meters per second (m/s) or
feet per second (ft/s).

Left Front Wheel Speed

The scan tool displays the actual speed of the left front wheel.

Left Rear Wheel Speed

The scan tool displays the actual speed of the left rear wheel.

LF Dump Valve Command

The scan tool displays the commanded state of the left front dump valve solenoid.

LF Iso. Valve Command

The scan tool displays the commanded state of the left front isolation valve solenoid.

LR Dump Valve Command

The scan tool displays the commanded state of the left rear dump valve solenoid.

LR Iso. Valve Command

The scan tool displays the commanded state of the left front isolation valve solenoid.

Longitudinal Accelerometer Sensor Signal

The scan tool displays the longitudinal accelerometer sensor signal voltage.

Master Cylinder Pressure Sensor Input

The scan tool displays the hydraulic brake pressure applied by the master cylinder.

2007 Hummer H3

2007 BRAKES Antilock Brake System - H3

Requested Torque

The scan tool displays between 11% and 90%. The PCM provides the percentage of engine
torque that is currently applied to the wheels. The lower the percentage the less torque
applied to the wheels.

Reverse Switch

The scan tool displays ON when the transmission gear selector is in reverse.

Right Front Wheel Speed

The scan tool displays the actual speed of the left front wheel.

Right Rear Wheel Speed

The scan tool displays the actual speed of the left rear wheel.

RF Dump Valve Command

The scan tool displays the commanded state of the left front dump valve solenoid.

RF Dump Valve Command

The scan tool displays On/Off. The scan tool displays On when the right front dump valve
solenoid is commanded on.

RF Iso. Valve Command

The scan tool displays the commanded state of the left front isolation valve solenoid.

RR Dump Valve Command

The scan tool displays the commanded state of the left rear dump valve solenoid.

RR Iso. Valve Command

The scan tool displays the commanded state of the left front isolation valve solenoid.

Stability System Active

The scan tool displays the active status of the vehicle stability enhancement system (VSES).

2007 Hummer H3

2007 BRAKES Antilock Brake System - H3

Stability System Enabled

The scan tool displays the operating status of the VSES.

System Configuration

The scan tool displays the configuration of the EBCM.

System Voltage

The scan tool displays the approximate voltage supplied by the battery and charging system.

TCS Status/EBCM -TCS Active

The scan tool displays Yes if the EBCM is requesting torque reduction from the PCM.

TCS Status/PCM -TCS Active

The scan tool displays Yes if the PCM is reducing engine torque during a traction control
event.

Traction Control Equipped

The scan to displays if the vehicle is equipped with traction control.

Traction Control Switch

The scan tool displays the status of the traction control switch that is reported by the BCM.

Transmission Type

The scan too displays whether the vehicle is equipped with a manual or automatic
transmission.

VSES Control Switch

The scan tool displays if the enabled/disabled status of the VSES system requested by the
BCM/traction switch. VSES can be disabled by use of the traction switch.

VSES Equipped

The scan tool displays if the vehicle is equipped with VSES.

2007 Hummer H3

2007 BRAKES Antilock Brake System - H3

Yaw Rate Sensor Input

The scan tool displays the degrees of vehicle rotation (yaw rate) per second.

DTC B0010

Diagnostic Instructions

Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.

Review Strategy Based Diagnosis for an overview of the diagnostic approach.

Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptor

DTC B0010

Reverse Gear Signal Circuit

Diagnostic Fault Information

DTC B0010

Circuit/System Description

The electronic brake module (EBCM) receives a 12-volt signal from the backup lamp supply
voltage circuit when the vehicle transmission is in reverse. The EBCM uses the backup lamp
supply voltage circuit to perform traction control and vehicle stability in reverse.

Conditions for Running the DTC

The ignition is ON.

The vehicle speed is greater than 15 km/h (9 mph) for 2 seconds continuously.

The vehicle is equipped with a manual transmission.

Conditions for Setting the DTC

The EBCM detects an open in the backup lamp supply voltage circuit.

Circuit

Short to

Ground

Open/High

Resistance

Short to

Voltage

Signal

Performance

Backup Lamp Supply Voltage

-

B0010

1

-

1. Reverse lamp always illuminated

2007 Hummer H3

2007 BRAKES Antilock Brake System - H3