Pinout Values and Diagnostic Parameters

Typical Breakout Box Voltage Readings:

- The AC voltage reading from a "true RMS" type Digital Volt-Ohmmeter (DVOM) (Fluke 87) may be significantly different from a reading taken when using a "standard" or averaging type DVOM (Rotunda 007-0001, Fluke 88, 75 etc.) leading to incorrect answers to Pinpoint Test questions.

- Do not connect the positive lead of the diagnostic harness or the CKP-VR sensor tee until directed to do so.

- The SPOUT and IDM detectors in the diagnostic harness will not work unless the positive and negative leads of the diagnostic harness are connected.

- KOEO = Key ON, Engine OFF.

- KOEC = Key ON, Engine Cranking.

- The vehicle battery voltage must be at least 12 volts DC.

- Be careful not to bring a fluorescent trouble lamp close to the vehicle wiring. If the key is ON and the Crankshaft Position (CKP) sensor is disconnected, the Ignition Control Module (ICM) may fire the coil.

- When using a DVOM to measure DC voltage readings, connect the positive lead to the jack identified with a (+) sign and the negative lead to the jack with a (-) sign.

- Repetitive Spark Mode will cause coil circuits to read higher than other non-repetitive coil circuits.

- Diagnostics are written to catch "Hard Faults" (Due to limitations of test equipment) only; intermittent failures will be difficult or impossible to diagnose using these procedures unless the failure is constantly present when Pinpoint Tests are run.