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WesTech Technical Information - Hyundai Code Retrieval
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Hyundai Code Retrieval

Accessing Diagnostic Trouble Codes

With Multi-Use Tester

Except 1993-95 Scoupe

  1. Turn ignition switch to Off.
  2. Connect harness connector of multi-use tester to diagnostic connector in fuse box, located on left kick panel.
  3. Connect power-source terminal of multi-use tester to cigarette lighter socket.
  4. Turn ignition switch On, then use multi-use tester to read self-diagnostic codes.
  5. Repair any malfunctions found using tester.
  6. Turn ignition switch Off, then disconnect battery ground cable for 10 seconds.
  7. Check that no malfunction codes are displayed with multi-use tester.
  8. Disconnect multi-use tester. If a test is to made during cranking, the power to cigarette lighter will be interrupted therefore, use a separate battery harness for multi-use tester.

With Analog Voltmeter

Except 1993-95 Scoupe

  1. Connect voltmeter to self-diagnosis connector, located in fuse box on left kick panel.
  2. Turn ignition switch On and note an immediate indication of ECM (ECU) memory contents will begin. If system is in normal condition, pointer of voltmeter indicates a normal pattern. If any abnormality is in the memory, pointer of voltmeter will deflect indicating an abnormal condition.
  3. After recording abnormal items, check and repair each part.
  4. After repairs have been completed, disconnect battery ground cable for at least 15 seconds to erase codes from memory.

Using On-Board Diagnostic Lamp

1993-95 Scoupe

  1. With ignition switch in the On position, ground the No. 10 terminal (L wire) of diagnostic connector for approximately 2.5 seconds.
  2. The diagnostic connector is located on the left hand kick panel. The first diagnostic trouble code or no fault detected will be indicated by the on-board diagnostic lamp. The onboard diagnostic lamp will indicated DTC's by flashing frequencies and 2 second pauses. As an example, one flash, followed by a 2 second pause, followed by two flashes and another 2 second pause, followed by two flashes and a 2 second pause, followed by three flashes and another 2 second pause, indicates a failure code 1223. The fault code will be repeated until the No. 10 terminal of the diagnostic connector is grounded to proceed to the next fault code.
  3. The last output consist of the end of output code 3333.

Clearing Diagnostic Trouble Codes

To erase any diagnostic codes, disconnect battery ground cable for 15 seconds and the ECM (ECU) memory will be erased.


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