Preliminary Checkout, Equipment, and Notes

CHECKOUT
^ Visually inspect the engine compartment to ensure all vacuum hoses and spark plugs wires are properly routed and securely connected.
^ Examine all wiring harnesses and connectors for insulation damage, burned, overheated, loose, damaged pins, or broken conditions. Check sensor shield connector. Make sure ICM mounting screws are clean and tight.
^ Be certain the battery is fully charged.
^ All accessories should be off during diagnosis.

EQUIPMENT (REQUIRED)
^ DI diagnostic cable (Rotunda 007-00097, or equivalent)
^ Spark tester, neon bulb type (Ford Part# D89P-6666-A, or equivalent)
^ Volt-Ohmmeter (Rotunda Part# 007-00001, or equivalent)
^ Remote starter switch
^ EEC-IV breakout box (Rotunda Part# T83L-50-EEC-IV, or equivalent)
^ Spark tester, gap type (Ford Part# D81P-6666-A, or equivalent)
^ Inductive timing light
^ 12 volt test lamp

EQUIPMENT (RECOMMENDED)
^ TFI-IV Intermittent Analyzer (Rotunda 007-00035). Necessary for diagnosis of intermittent distributor ignition system faults. Step by step diagnostic procedures are included with tester. The TFI-IV Intermittent Analyzer can not be used with ICMs that have Computer Controlled Dwell (CCD) unless a CCD update has been added to the analyzer or a TFI-IV Intermittent Analyzer (Rotunda 007-00035) which has a CCD compatible label on the tester is used.

NOTES
^ A spark plug with a broken side electrode is not sufficient to check for spark and may lead to incorrect test results.
^ When making measurements on a wiring harness, both a visual inspection and a continuity test should be performed. Inspect the connector pins for damage (corrosion, bent or spread pins, etc.) when directed to remove a connector.
^ When making voltage checks a ground reading means any value within a range of 0 to 1 volt. Also BAT+ readings mean any value that is within a range of 10 to 14 volts.
^ When making voltage checks and a reference to ground is made, use either the negative battery lead or cast iron on the engine. B+ means the positive battery cable at the battery.
^ The AC voltage reading from a "true RMS" type DVOM may be significantly different taken from a "standard" or averaging DVOM, leading to incorrect answer of pinpoint test steps.