Hummer H3. Manual — part 1348

The use of the Diagnostic System Check will identify the correct procedure for diagnosing the
system and where the procedure is located.

SCAN TOOL OUTPUT CONTROLS

Scan Tool Output Controls

SCAN TOOL DATA LIST

The scan tool data lists contain all of the Instrument Panel, Gages and Console related parameters
that are available on the scan tool. The parameters in the list are arranged in alphabetical order.
The data list column indicates the location of the parameter within the scan tool menu selections.

Scan Tool

Output Control

Additional Menu

Selection(s)

Description

IPC Gages

-

The IPC drives all gages to the maximum physical
position when you select On. The IPC drives all
gages to the minimum physical position when you
select Off.

Lamp Test

-

The IPC illuminates the following indicators when
you select On:

ABS

Air Bag

Brake

CRUISE

Fasten safety belt

High beam

SECURITY

Upshift

The indicators should illuminate until commanded
Off.

PRNDL Display

-

An underscore illuminates under each indicator in
the PRNDL display until commanded Off.

Segments Test

-

All DIC and Odometer segments illuminate until
commanded Off.

2007 Hummer H3

2007 ACCESSORIES & EQUIPMENT Displays and Gages - H3

Use the scan tool data lists as directed by a diagnostic table or in order to supplement the
diagnostic procedures. Begin all of the diagnostic procedures with Diagnostic System Check -
Vehicle .

Use the scan tool data lists only after the following is determined:

There is no published DTC procedure nor published symptom procedure for the customer
concern.

The DTC or symptom procedure indicated by the Diagnostic System Check does not resolve
the customer concern.

The typical data values are obtained from a properly operating vehicle under the conditions
specified in the first row of the scan tool data list table. Comparison of the parameter values from
the suspect vehicle with the typical data values may reveal the source of the customer concern.

Body Control Module (BCM)

Scan Tool Parameter

Data List

Units Displayed

Typical Data

Value

Operating Conditions: Ignition ON/Engine OFF/Headlamps Off/Doors Closed/Park
Brake Unapplied
Battery Voltage Signal

Data

Volts

12.2 V

Cargo Lamp Switch

Inputs

Active/Inactive

Inactive

Courtesy Lamp Output

Outputs

On/Off

Off

Courtesy Lamp Switch

Inputs

Active/Inactive

Inactive

Driver Door Ajar Sw

Inputs

Door Ajar/Door

Closed

Door Closed

Driver Seatbelt

Inputs

Unbuckled/Buckled

Unbuckled

Hazard Lamp Switch

Inputs

Active/Inactive

Inactive

Headlamp Off Switch

Inputs

Active/Inactive

Inactive

Headlamp On Switch

Inputs

Active/Inactive

Inactive

Headlamp Relay

Outputs

On/Off

Off

High Beam Indicator Command

Outputs

On/Off

Off

High Beam Select Switch

Inputs

Active/Inactive

Inactive

Ignition Accessory

Inputs

Active/Inactive

Active

Ignition 1 Run/Crank

Inputs

Active/Inactive

Active

Ign. Off/Run/Crank

Inputs

Active/Inactive

Active

LF Turn/Hazard Lamp Command

Outputs

On/Off

Off

2007 Hummer H3

2007 ACCESSORIES & EQUIPMENT Displays and Gages - H3

Instrument Panel Cluster (IPC)

Powertrain Control Module (PCM)

LR Turn/Hazard Lamp Command

Outputs

On/Off

Off

Park Brake Switch

Inputs

Applied/Released

Released

Park Lamps Signal

Outputs

On/Off

Off

Park Lamp Switch

Inputs

On/Off

Off

Passenger Door Ajar Sw

Inputs

Door Ajar/Door

Closed

Door Closed

RF Turn/Hazard Lamp Command

Outputs

On/Off

Off

RR Turn/Hazard Lamp Command

Outputs

On/Off

Off

Security Indicator Command

Outputs

On/Off

Off

Scan Tool Parameter

Data List

Units Displayed

Typical Data

Value

Operating Conditions: Ignition ON/Engine OFF/Seat Belt Buckled/High Beams
Off/Park Brake Unapplied

Battery Voltage

Data

Voltage

12.2 V

(Varies)

Engine Coolant Temperature

Data

Celsius

(Fahrenheit)

Varies

Engine Speed

Data

RPM

0 RPM

Fuel Level

Data

%

Varies

PRNDL Switch

Inputs

Park, Reverse,

Neutral, Drive,

3rd, 2nd, 1st

Park

Trip Odometer

Data

kilometers (miles)

Varies

Trip Reset Switch

Inputs

Active/Inactive

Inactive

Vehicle Speed

Data

kilometers per

hour (miles per

hour)

0 mph (0 km/h)

Scan Tool Parameter

Data List

Units Displayed

Typical Data

Value

Operating Conditions: Engine Idling/Normal Operating Temperature

Ambient Air Temperature

Engine Data

Celsius

(Fahrenheit)

-35-60°C (-31-

140°F) (Varies)

Cruise Control

2007 Hummer H3

2007 ACCESSORIES & EQUIPMENT Displays and Gages - H3

Cruise Control Active

Active

IPC Data

Yes/No

No

ECT Sensor

Engine Data

Air Data

CMP Data

EVAP Data

Fuel Trim Data

HO2S Data

Ignition Data

Misfire Data

TAC Data

Cooling/HVAC

Data

Cruise Control

Data

Electrical/Theft

Data

IPC Data

I/M Data

Celsius

(Fahrenheit)

85-105°C (185-

220°F)

Engine Oil Level Switch

Engine Data

OK/Low

OK

Engine Oil Pressure Switch

Engine Data

CMP Data

Electrical/Theft

Data

IPC Data

OK/Low

OK

Engine Oil Temperature Calculated

IPC Data

Celsius

(Fahrenheit)

85-105°C (185-

220°F)

Engine Speed

Engine Data

Air Data

CMP Data

EVAP Data

Fuel Trim Data

HO2S Data

Ignition Data

Induction Data

Misfire Data

TAC Data

Cooling/HVAC

Data

RPM

±100 RPM from

desired idle

speed

2007 Hummer H3

2007 ACCESSORIES & EQUIPMENT Displays and Gages - H3