Diagnostic Tests: Notes

WARNING: While ignition switch is in ON position, DO NOT connect or disconnect battery, or any other electrical connector. Component damage may result.

CAUTION: When battery is disconnected, vehicle computer and memory system may lose memory data. Driveability problems may exist until computer systems have completed a relearn cycle. See COMPUTER RELEARN PROCEDURES - HYUNDAI article in GENERAL INFORMATION before disconnecting battery.

CAUTION: DO NOT spray carburetor cleaner on or near coils or plug wires. Allow enough time between checking areas for leaks for carburetor spray to dissipate.

NOTE: Before performing any diagnostic test, refer to SELF-DIAGNOSTIC SYSTEM for system functions and system diagnostic procedures.

NOTE: If more than one DTC is stored at ECM memory, always perform diagnosis from first DTC stored at ECM memory, unless stated otherwise in test procedure.

NOTE: For component testing procedure not covered in SELF-DIAGNOSTIC article, see SYSTEM & COMPONENT TESTING article.

NOTE: For identification of circuits, terminals and wire colors referenced in the testing procedure, see ENGINE PERFORMANCE in SYSTEM WIRING DIAGRAMS article in ELECTRICAL.

NOTE: After any repair has been made, see AFTER-REPAIR PROCEDURE under SELF DIAGNOSTIC SYSTEM. For component removal and installation, see REMOVAL & INSTALLATION article.

NOTE: In some instances, a short to ground or a short to power may cause damage to control modules. DO NOT replace control modules until testing proves these conditions no longer exist. Verify that ground circuits have good continuity to ground.