ABS / Air Bag 2004 User Guide

Chapter 5: Diagnostic Codes (Read / Clear Codes)

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5: Diagnostic Codes (Read / Clear Codes)

The Diagnostics Codes (or Read Codes and Clear Codes) functions let you read, review, and clear diagnostic trouble codes (DTCs) for a vehicle.

The diagnostic trouble code option(s) that appear on the Diagnostic Menu screen vary depending on the vehicle being tested. For some vehicles, the menu option is Diagnostic Codes (see Figure 5.1); for other vehicles, there are two menu options: Read Codes and Clear Codes (see Figure 5.2).

The Diagnostic Codes option appears on the Diag- nostic Menu screen for vehicles that allow reading of DTCs with a scan tool. This chapter includes the fol- lowing procedures for using the Diagnostic Codes functions:

Read Codes” on page 34

Figure 5.1: Diagnostic Menu Screen with Diagnostic Codes Option

Review Codes” on page 37

Clear Codes” on page 38

Self Diagnostics” on page 39

Wiggle Test” on page 41

The Read Codes and Clear Codes options appear on the Diagnostic Menu screen (instead of the Diagnostic Codes option) for vehicles that require reading of DTCs by visually viewing them as “flash codes.” For this type of vehicle, you identify the vehicle’s “flash code” num- bers and manually enter the numbers into the NGIS tool to see their descriptions. This chapter includes the fol- lowing procedures for using the Read Codes and Clear Codes options when they appear directly on the Diag- nostic Menu screen:

Read Codes (Flash Codes)” on page 42

Clear Codes (Flash Codes)” on page 44

Note: Before performing the procedures in this chapter, fol-

low the instructions in “Chapter 2: Start-up Steps” on page 13.

Note: The ABS Air Bag 2004 software has an automatic Diagnostic Code Triggered Record function. For vehicles with datastream access, if a diagnostic fault occurs while you are testing a vehicle, the software automatically 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.

Figure 5.2: Diagnostic Menu Screen with Read Codes and Clear Codes Options

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OTC Wireless switch/hub manual Diagnostic Codes Read / Clear Codes, Diagnostic Menu Screen with Diagnostic Codes Option

switch/hub specifications

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