2004 Pontiac Aztek Base, FWDFACTORY OEM SERVICE PROCEDURE

Scan Tool Data Definitions

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Battery Voltage

The scan tool displays 0.0-16.0 volts. The battery voltage input represents the system voltage measured at the BCM ignition feed input.

GM Part Number

The scan tool displays the 8-digit alphanumeric module part number.

Ignition Accessory

Input from ignition switch Accessory circuit. Used to determine power mode. Hot in ACC and ON.

Ignition 0

Input to the control module from the ignition switch indicating the ignition 0 position. Switch closed (HOT) in ignition switch positions UNLOCK, ACC, ON, and START.

Ignition 1

Input to the control module from the ignition switch indicating the ignition 1 position. Switch closed (HOT) in ignition switch positions ON and START.

Ignition 3

Input to the control module from the ignition switch indicating the ignition 3 position. Switch closed (HOT) in ignition switch position ON.

Julian Date of Build

This is the day of the year that the module was built.

Key in Ignition

Input from ignition switch indicating that the ignition key is inserted into the ignition switch. HOT with key in ignition switch.

SWC Switch Voltage

Indicates the steering wheel controls supply voltage.

SWC Switch Power

Indicates if voltage is supplied to the steering wheel controls.

Year Module Built

This is the year that the module was built.

Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.