ABS / Air Bag 2004 User Guide

Chapter 10: Special Tests

 

Basic Special Test Procedure

10: Special Tests

61

The Special Tests function lets you perform special bi-directional diagnostic tests on anti-lock brake sys- tems (ABS) and air bags. The tests let you use the NGIS tool to activate or control the system components.

Note: During a test, you use the tool to temporarily control a selected component. When you exit the test, the component returns to the normal setting.

This chapter includes a basic procedure for doing the special tests, brief descriptions of the special tests, and examples of common special test screens.

Note: While performing a special test, a Fault Code Detected screen may appear indicating a fault exists. Repair the prob- lem and clear the diagnostic test code(s) before continuing the special test. For details about clearing codes, refer to “Chapter 5: Diagnostic Codes (Read / Clear Codes)”.

Note: The ABS Air Bag 2004 software has an automatic Diagnostic Code Triggered Record function. If a diagnostic fault occurs while you are testing a vehicle, the software auto- matically alerts you with a screen message and creates a recording for playback. To replay these recordings, refer to “Playback a Data File” on page 21.

WARNING:

Before performing any tests, refer to the Safety Pre- cautions and instructions provided in this User Guide and the warnings provided by the vehicle manufacturer. In addition, follow any warnings and descriptions provided on the NGIS tool screens.

WARNING:

During active testing, bi-directional component activation is automatically “inhibited” when required to allow brake components adequate time to cool down. Do not bypass this cool-down period by restarting the test or by using any other means of bypassing the cool-down period.

Basic Special Test Procedure

The special tests vary for each vehicle, year, and component (ABS, Air Bag, etc.). This section provides basic steps for the special tests.

To perform special tests on a vehicle, follow these steps:

1Perform the steps in “Chapter 2: Start-up Steps” to enter the vehicle information and display the Diagnostic Menu screen.

Figure 10.1: Diagnostic Menu Screen

2From the Diagnostic Menu screen, select Special Tests. This displays the Special Tests menu screen (Figure 10.2 on page 62).

Note: If an identification screen appears, review the screen and press the ENTER key to display the Special Tests menu screen.

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OTC Wireless switch/hub manual Special Tests, Basic Special Test Procedure
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switch/hub specifications

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