Initial Inspection and Diagnostic Overview

Input Signal Inspection Points:

When Using The Scan Tool (MUT-II)
1. Connect the scan tool to the data link connector.

CAUTION: Always turn the ignition switch off when connecting and disconnecting the scan tool.

2. If buzzer of the scan tool sounds once when a switch is operated (ON/OFF), the ECU input signal for that switch circuit system is normal.

Input Signal Inspection Points:

When Using The Voltmeter
1. Use the special tool to connect a voltmeter between the ground terminal and the ETACS terminal of data link connector.
2. If the voltmeter indicator deflects once when a switch is operated (ON/OFF), the ECU input signal for that switch circuit system is normal.