Reading and Clearing Diagnostic Trouble Codes

METHOD OF READING THE DIAGNOSTIC TROUBLE CODES

When using the scan tool




1. Connect the scan tool to the data link connector (16-pin) underneath the instrument under cover.

CAUTION: Connection and disconnection of the scan tool should always be carried out with the ignition switch in the OFF position.




2. With the ignition switch in the ON position, turn the auto-cruise control main switch to ON and take a reading of the diagnostic trouble codes.




When using the voltmeter
Use the special tool to connect a voltmeter between the ground terminal and the diagnostic output terminal of data link connector.
Read the diagnostic trouble code by the indicator's deflection.




DIAGNOSTIC RESULT DISPLAY METHOD WHEN USING THE VOLTMETER

NOTE: Other diagnosis items are also output as voltage waveforms corresponding to diagnosis code numbers.

METHOD OF ERASING THE DIAGNOSTIC TROUBLE CODES
The diagnostic trouble codes can be erased by disconnecting the (-) cable from the battery for 10 seconds or more and then re-connecting it, or by the following procedure.
1. Turn the ignition switch to ON.
2. With the SET switch at the ON position, turn the main switch to ON, and within 1 second after this, turn the RESUME switch to ON.
3. With the SET switch once more at the ON position, turn the stop light switch ON for a continuous period of 5 seconds or more.




INPUT SWITCH CODE INSPECTION METHOD
1. Connect the scan tool to the data link connector (16-pin) underneath the instrument under cover.
2. With the ignition switch in the ON position, turn the cruise control SET switch to the ON position.
3. Within 1 second after turning the cruise control main switch to ON, turn the cruise control RESUME switch to ON.
4. Operate each switch listed in the input inspection table and take a reading of the input switch codes with the scan tool.




Input Inspection Table