Initial Inspection and Diagnostic Overview

1. Get a full understanding of the trouble symptoms by check the theft-alarm system, and then carry out troubleshooting.
2. The signals input to the ETACS-ECM from the switches which are related to the following systems should be normal.
- Central door locking system
- Headlight system
- Horn system
- Starting system
In addition, the signals input to the ETACS-ECM from the following switches should be normal.
- Hood switch
- Liftgate switch
- Liftgate key cylinder switch

NOTE:
1. The ECU may not accept the alarm canceling signal under the following conditions.
- If the liftgate key cylinder switch or door lock key cylinder switch is operated roughly
- If these switches have been installed incorrectly or switches themselves are defective
In such case, the alarm operation will take place when the door is opened using a key.
[However, when the door key cylinder switch has been shorted with the ignition switch ON, the ECU judges the detection switch as faulty. Since then, it will prevent setting of alarm until the shorting is corrected.]
2. If the liftgate is opened using a key and is left opened when the door key cylinder switch system has a trouble (wiring harness damage, open circuit, etc.), the ECU judges it as the liftgate holding mode and does not produce alarm even when the door is opened.