Scan Tool Diagnostics: Notes

WARNING: This page is about a different car, the 2003 Pontiac Aztek and 2003 Buick Rendezvous. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: DO NOT use a scan tool that displays faulty data. The use of a faulty scan tool can result in misdiagnosis and the unnecessary replacement of parts. Only the parameters listed under SCAN TOOL DEFINITIONS are used in diagnosing. If a scan tool displays other parameters, the values are not recommended by General Motors for use in diagnosis.

Only use scan tool diagnostics under the following conditions:

The Diagnostic System Check is complete.
The on-board diagnostics are functioning properly.
No DTCs are present.

The values listed in AWD SCAN TOOL DATA LIST table represent a typical display recorded from a properly functioning system, recorded under the following conditions:

Engine at idle.
Upper radiator hose hot.
Closed throttle.
Transmission in PARK.
Closed Loop operation.
Accessories OFF.
Brake pedal not applied.

AWD SCAN TOOL DATA LIST

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

AWD Circuit Status

⁽¹⁾

OK/Short/Open

AWD Clutch temperature Disable

⁽¹⁾

Yes/No

AWD Duty Cycle

⁽¹⁾

Percent

Varies

AWD Fluid temperature Disable

⁽¹⁾

Yes/No

AWD Voltage Disable

⁽¹⁾

Yes/No

AWD Mini Spare Disable

⁽¹⁾

Yes/No

AWD Overtemperature Display

⁽¹⁾

Yes/No

AWD Torque Management

⁽¹⁾

Active/Inactive

Inactive

AWD Wheel Speed Disable

⁽¹⁾

Yes/No

Last Disable Reason

⁽¹⁾

Fluid Temp, Clutch Temp, Wheel Speed, Voltage, Mini Spare, ABS System

Varies

Current Gear

⁽¹⁾⁽²⁾⁽³⁾⁽⁴⁾⁽⁵⁾⁽⁶⁾⁽⁷⁾

1, 2, 3, 4

ECT

⁽¹⁾⁽²⁾⁽³⁾

°C (°F)

Varies

Engine Speed

⁽¹⁾⁽²⁾⁽³⁾⁽⁴⁾⁽⁵⁾⁽⁶⁾⁽⁷⁾

RPM

650-750 RPM

Engine Torque

⁽¹⁾⁽²⁾⁽³⁾

N.m (Ft. Lbs.)

Varies

Gear Ratio

⁽¹⁾⁽²⁾⁽³⁾⁽⁴⁾⁽⁵⁾⁽⁶⁾

Ratio

3.98

Ignition Voltage

⁽¹⁾⁽²⁾

Volts

12.5-15.5

TP Angle

⁽¹⁾⁽²⁾⁽³⁾⁽⁴⁾⁽⁵⁾⁽⁶⁾⁽⁷⁾

Percent

Trans. Fluid Temp.

⁽¹⁾⁽²⁾⁽³⁾⁽⁷⁾

°C (°F)

Varies

Transmission ISS

⁽¹⁾⁽²⁾⁽³⁾⁽⁴⁾⁽⁵⁾⁽⁶⁾

RPM

600-700 RPM

Transmission OSS

⁽¹⁾⁽²⁾⁽³⁾⁽⁴⁾⁽⁵⁾⁽⁶⁾

RPM

Vehicle Speed

⁽¹⁾⁽²⁾⁽³⁾⁽⁴⁾⁽⁵⁾⁽⁶⁾

MPH (KM/H)

⁽¹⁾

AWD data.

⁽²⁾	Transmission data.

⁽³⁾

TCC data.

⁽⁴⁾	1-2 Shift data.

⁽⁵⁾	2-3 Shift data.

⁽⁶⁾	3-4 Shift data.

⁽⁷⁾	PC Solenoid data.