Hummer H3. Manual — part 1456

DIAGNOSTIC INFORMATION AND PROCEDURES

DIAGNOSTIC CODE INDEX

DIAGNOSTIC CODE INDEX

DIAGNOSTIC STARTING POINT - MANUAL TRANSMISSION

Begin the system diagnosis with Diagnostic System Check - Vehicle . The Diagnostic System
Check will provide the following information:

The identification of the control module or modules which command the system.

The ability of the control module or modules to communicate through the serial data circuit.

The identification of any stored DTCs and the status of the codes.

Use the Diagnostic System Check - Vehicle in order to identify the correct procedure for
diagnosing the system and where the procedure is located.

SCAN TOOL DATA LIST

Use the scan tool data values under the following conditions:

The Diagnostic System Check - Vehicle is complete.

The on-board diagnostics (OBDs) are functioning properly.

No DTCs are present.

The values below represent a typical display recorded from a properly functioning system.

Shift Control Lever Shaft Spring

508

Shift Control Lever Shaft Seal

509

Control Lever Boot

510

Shift Control Shaft Boot

511

Shift Control Lever Retainer

512

Control Lever Housing Gasket

513

Shift Control Lever Retainer Bolt

520

Shift Control Lever Assembly

DTC

Description

DTC P0502

Vehicle Speed Sensor (VSS) Circuit Low Voltage

DTC P0503

Vehicle Speed Sensor (VSS) Circuit Intermittent

2007 Hummer H3

2007 TRANSMISSION Manual Transmission - Aisin AR5 - H3

Only the parameters listed below are used in this manual for diagnosing. If a scan tool displays
other parameters, the values are not recommended by General Motors for use in diagnosis.

Scan tool values below were recorded under the following conditions:

Engine at idle

Upper radiator hose hot

Closed throttle

Transmission in Neutral

Closed Loop operation

Accessories OFF

Brake pedal not applied

Scan Tool Data List

IMPORTANT: Do not use a scan tool that displays faulty data. Report the

condition to the scan tool manufacturer. The use of a faulty scan
tool can result in misdiagnosis and the unnecessary replacement
of parts.

Scan Tool Parameter

Data List*

Units Displayed

Typical Data

Values

Vehicle Speed Sensor

ALL

km/h (mph)

0

*Data List Legend

Engine Data (1)

Air Data (2)

CMP Data (3)

Evap Data (4)

Fuel Trim Data (5)

HO2S Data (6)

Ignition Data (7)

Induction Data (8)

Misfire Data (9)

TAC Data (10)

Cooling/HVAC Data (11)

Cruise Control Data (12)

2007 Hummer H3

2007 TRANSMISSION Manual Transmission - Aisin AR5 - H3

SCAN TOOL DATA DEFINITIONS

The Transmission Scan Tool Data Definitions contain a brief description of manual transmission
related parameters available on the scan tool. The list is in alphabetical order. A given parameter
may appear in any one of the data lists. In some cases, the parameter may appear more than once
or in more than one data list in order to group certain related parameters together.

Vehicle Speed Sensor

This parameter displays the speed at which the vehicle is traveling. The scan tool displays
vehicle speed as kilometers per hour (km/h), miles per hour (mph). The vehicle speed is
calculated based on the input signal from the vehicle speed sensor.

DIAGNOSTIC TROUBLE CODE (DTC) TYPE DEFINITIONS

DTCs are categorized into emissions and non-emissions related types. If a DTC is set, the
malfunction indicator lamp (MIL) and failure data are utilized by the control module diagnostic
executive according to the DTC type. Each DTC is set based upon the individual DTCs running
and setting criteria. Read the Action Taken When the DTC Sets and Conditions for Clearing the
MIL/DTC in the supporting text for taking appropriate action to each DTC.

Emissions Related DTCs

Type A

The following actions occur at the time of the first failure:

The MIL is turned ON.

A DTC is stored in memory.

The Freeze Frame/Failure Records are stored.

The Failure Records are updated after the first failure of each ignition cycle.

Some Type A DTCs will not perform the above actions when the DTC first detects a failure. Two
consecutive failures are required. This allows systems, such as evaporative emission (EVAP), to
accurately identify what failure exists before setting a DTC and requesting MIL illumination.

Type B

Electrical/Theft Data (13)

IPC Data (14)

I/M Data (15)

2007 Hummer H3

2007 TRANSMISSION Manual Transmission - Aisin AR5 - H3

The following actions occur at one of the following times:

First failure:

The MIL is not turned ON.

A DTC is stored in memory as a Failed Last Test.

The Failure Records are stored.

Second consecutive drive cycle with a failure:

The MIL is turned ON.

A DTC is stored in memory as a history DTC.

The Freeze Frame data is stored.

The Failure Records are stored.

Second non-consecutive drive cycle with a failure:

The MIL is not turned ON.

A DTC is stored in memory as a Failed Last Test.

The Failure Records are stored.

Non-Emissions Related DTCs

Type C

The following actions occur at the time of a failure:

The MIL does not turn ON.

A DTC is stored in memory as a history DTC.

The Failure Records are stored.

The Failure Records are updated after the first failure of each ignition cycle.

Some Type C DTCs may also cause an auxiliary service lamp to be illuminated, and/or
display a message to the vehicle operator.

Type X

Actions did not occur. These DTCs are coded into the control module software, but will not run
for one of the following reasons:

The associated hardware is not installed with the vehicle emission package.

The diagnostic is not required for the vehicle emission package.

DIAGNOSTIC TROUBLE CODE (DTC) LIST/TYPE

2007 Hummer H3

2007 TRANSMISSION Manual Transmission - Aisin AR5 - H3