Without Scan Tool
DIAGNOSIS FUNCTIONMETHOD OF READING THE DIAGNOSTIC TROUBLE CODES
When Using A Voltmeter
1. Connect an analog voltmeter to the diagnostic output terminal (No. 6 terminal) and the ground terminal (No. 4 or 5 terminal) of the data link connector 1.
CAUTION: Be sure to use the special tool (diagnostic trouble code check harness) to connect the voltmeter to the ground terminal (No. 4 or 5 terminal).
2. Obtain the diagnostic output by observing the voltmeter pointer deflection.
3. Repair the problem location, referring to the diagnostic chart.
DIAGNOSTIC RESULT DISPLAY METHOD WHEN USING THE CHECK ENGINE/MALFUNCTION INDICATOR LAMP
NOTE: Other diagnostic trouble codes also output as the same code numbers as when using the scan tool.