Data Display

The scan tool displays the module data. This information assists in determining whether the module is operating properly, and whether the module is sending or receiving the proper data to and from a particular system. The module uses data received from other systems in order to carry out some functions. If the module receives the incorrect data from another system, the module may function improperly. Use the scan tool in order to review the data from the systems that interact with the module.

Displayed Input/Output Status

The scan tool also displays the module input/output status. Select the module input/output status display in order to display the data and determine if the switched inputs/outputs may be properly interpreted. The display also indicates if the input/output has changed states. For example, when a door is closed, the scan tool displays the input status of the door ajar switch as INACTIVE. When the door is open, the scan tool reads ACTIVE. Use this type of information when diagnosing a malfunction associated with a particular module input or an input that is shared with another system.

Control Outputs

Use a scan tool in order to control the module output functions. When the module output control is selected, the scan tool can command the module to turn an output on or off. This feature may be used in order to determine if the module is able to control an output regardless of the inputs or any specific program instructions. Once a test is selected, the scan tool will command the module to energize the selected output. The scan tool then displays the status of the selected output. The displayed information represents only what was module commanded, not what action was actually taken. Verify that the module is performing each of the selected output functions.

Scan Tool Menus

Refer to the Scan Tool Manual for complete information on scan tool diagnostics. The scan tool information relating to the variable effort steering (VES) system appears under Magna Steer in Chassis.

Diagnostic Trouble Codes (DTC)

The diagnostic trouble codes (DTC) function has the following 3 modes:

DTC Information: Current or history DTCs stored by the EBCM may be displayed.

DTC History: Displays the conditions under which a history DTC was set and the number of occurrences of the DTC.

Clear DTC Information: Current or history DTCs stored by the EBCM may be cleared.

Data Display

For a full description of the Data Display parameters relating to ABS, refer to Scan Tool Diagnostics in Antilock Brake System. For Data Display parameters relating to VES, refer to Scan Tool Data List and Scan Tool Data Definitions .

Magna Steer Test

In this test mode, the scan tool will command the variable effort steering to become more firm and less firm as you turn the steering wheel. The steering assist setting will be displayed on the scan tool as commanded.

Snapshot

In this test mode, the scan tool captures the data listed in the data displays before and after a snapshot-triggering condition which may or may not set a DTC.