Introduction To Diagnostic Testing

To select a desired diagnostic feature, the diagnostic system must first be programmed to display ".7.0" on the FDC. ".7.0" indicates system is ready for a diagnostic feature to be selected. To cause ".7.0" to be displayed on the FDC, See ENTERING SELF-DIAGNOSTICS  and DISPLAYING TROUBLE CODES  under SELF-DIAGNOSTICS in this article. With ".7.0" displayed, technician may select any of the following diagnostic tests appearing in this article:

• PCM Switch Tests  To select, see PCM SWITCH TESTS  under DIAGNOSTIC TESTING.
• PCM Data Parameters  To select, see PCM DATA PARAMETERS  under DIAGNOSTIC TESTING.
• PCM Code Snapshot  To select, see PCM CODE & INSTANT SNAPSHOT  under DIAGNOSTIC TESTING.
• PCM Instant Snapshot  To select, see PCM CODE & INSTANT SNAPSHOT  under DIAGNOSTIC TESTING.
• PCM Output Cycling  To select, see PCM OUTPUT CYCLING  under DIAGNOSTIC TESTING.
• PCM Output Overrides  To select, see PCM OUTPUT OVERRIDES  under DIAGNOSTIC TESTING.
• BCM Data Parameters  To select, see BCM DATA PARAMETERS  under DIAGNOSTIC TESTING.
• ECCP Program Override  To select, see ECCP PROGRAM OVERRIDE  under DIAGNOSTIC TESTING.
• Clear Codes  See CLEARING TROUBLE CODES  under SELF-DIAGNOSTICS.
• Exit Diagnostics  See EXITING DIAGNOSTICS  under SELF-DIAGNOSTICS.