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Home >> Ford >> 2003 >> Excursion 6.0 P, RWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 3 (ENGINE CONTROLS - SELF-DIAGNOSTICS - 7.3L (995, 996 F650/750, 99F E Series & 99F F450/550) DIESEL) >> Quick Test >> Introduction >> Diagnostic Aids

Diagnostic Aids

WARNING: This page is about a different variant/trim than selected.

After each service or repair procedure has been completed, repeat QUICK TEST to ensure all electronic engine control systems are functioning properly and DTCs are no longer present.

NOTE: If performing repeated self-tests on models with Federal emissions, disconnect glow plug relay to keep battery from going dead. Relay is located on top, right side of engine. Ignore any glow plug DTCs while glow plug relay is disconnected.
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