Diagnostic Circuit Check: Notes

CAUTION: Ensure ignition is off when performing resistance tests. Perform all resistance and voltage tests using a Digital Volt-Ohmmeter (DVOM) with a minimum 10-megohm impedance, unless stated otherwise in test procedures.

NOTE: Powertrain Control Module (PCM) diagnostic memory is retained by direct power supply from battery. Memory is not cleared/erased by turning off ignition, but it will be cleared/erased if battery or PCM is disconnected. If PCM is replaced on vehicles with immobilizer system, immobilizer ECU and ignition key may also need to be replaced.

NOTE: All scan tool functions required in test procedures are available on manufacturer's MUT-II scan tool. Generic scan tools may not have the capability to carry out all tests.

NOTE: For terminal identification, see TERMINAL IDENTIFICATION . For circuit and wire color identification, see WIRING DIAGRAMS article.