Component Tests and General Diagnostics

Using the scan tool or voltmeter, check whether or not the input signals from each switch are being input to the ETACS Unit.

When Using The Scan Tool:

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

CAUTION: Turn off the ignition switch beforehand whenever the scan tool is connected or disconnected.

2. If the scan tool makes a peep sound when each switch is operated (turned ON/OFF), the input signal to ECU is normally sent from the switch circuit system.

When Using A Voltmeter:

When using the Voltmeter
1. Connect a voltmeter to the ETACS terminal and the ground terminal of the data link connector using the special tool.
2. If the voltmeter pointer deflects once when each switch is operated (turned ON/OFF), the input signal to ECU is normally sent from the switch circuit system.