With Generic Scan Tool

SELF-DIAGNOSIS
The ECM monitors the input/output signals (some signals at all times and the others under specified conditions). When the ECM detects that an irregularity, it memorizes the diagnostic trouble code, and outputs the signal to the self-diagnosis output terminal.

The diagnosis results can be read using a Scan Tool (ST). Diagnostic trouble codes (DTC) will remain in the ECM as long as battery power is maintained. The diagnostic trouble code will, however, be erased when the battery terminal or the engine control module (ECM) connector is disconnected or erased by Generic Scan Tool.

CHECKING PROCEDURE (SELF-DIAGNOSIS)

NOTE:
A. When battery voltage is low, diagnostic trouble codes can not be read. Be sure to check the battery for voltage and other conditions before starting the test.
B. Diagnosis memory is erased if the battery or the ECM connector is disconnected. Do not disconnect the battery before the diagnostic trouble codes are completely read and recorded.

Inspection Procedure / Using Generic Scan Tool
1. Turn OFF the ignition switch.








2. Connect the scan tool to the data link connector in the coin box.
3. Turn ON the ignition switch.
4. Use the scan tool to check the diagnostic trouble code.
5. Repair the faulty part from the diagnosis chart.
6. Erase the diagnostic trouble code.
7. Disconnect the scan tool.