Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSFORD1996CROWN VICTORIA POLICE INTERCEPTOR, 4.6 9REPAIR AND DIAGNOSIS (SINGLE PAGE)BODY & FRAMEBODY, CAB CONTROL SYSTEMSMODULE COMMUNICATIONS NETWORK SYSTEMSELF-DIAGNOSTIC SYSTEMDATA LINK DIAGNOSTICS
1996 Ford Crown Victoria Police Interceptor, 4.6 9
Data Link Diagnostics
1996 Ford Crown Victoria Police Interceptor, 4.6 9SECTION Data Link Diagnostics
- The ignition switch must be in the RUN position or test will fail. This test is used to verify the proper operation of communication circuit of each module on the multiplex communication network or diagnostic communication network or diagnostic communication network. Perform New Generation Star Tester Hookup and vehicle selection. See NEW GENERATION STAR (NGS) TESTER USAGE .
- Rotate dial to menu item "Diagnostic Data Link" and press trigger.
- If results of Circuit 914 (+) = 0000 and Circuit 915 (-) = 0000, then the Multiplex Communication Network link test passed. See Figure . If non-zeros returned, then go to COMMUNICATION SYSTEM DIAGNOSIS .
- If results of Circuit 70 (LB/W) = 0, then the Diagnostic Communication Network Link Test passed. If non-zeros returned, then go to COMMUNICATION SYSTEM DIAGNOSIS .
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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.