Lancer L4-2.4L SOHC (2005)
2. Check that normal conditions are displayed on the items described in the table.
Q: Are normal conditions displayed on the "IG SW (IG1)" and "FRONT DOOR SW"?
Normal conditions are displayed for all the items : Go to Step 4.
The scan tool does not show the respective normal condition for item "IG SW (IG1)" : Refer to Inspection Procedure M-2 "ETACS-ECU
does not receive any signal from the ignition switch (IG1)."
The scan tool does not show the respective normal condition for item "FRONT DOOR SW" : Refer to Inspection Procedure M-4
"ETACS-ECU does not receive any signal from the driver's or the front passenger's door switch."
STEP 4. Check the input signal (by using the pulse check mode of the monitor).
Check the following switches and input signals:
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Key reminder switch
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All door switches
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Interior light loaded signal
1. Operate scan tool MB991958 according to the procedure below to display "PULSE CHECK."
a. Select "SYSTEM SELECT."
b. Select "SWS."
c. Select "PULSE CHECK."
2. Check if scan tool MB991958 sounds or not.
Q: When the key reminder switch, each door switch and the interior light are operated, does scan tool MB991958 sound in each case?
Buzzer of scan tool MB991958 sounds normally : Replace the ETACS-ECU. Verify that the dome light illuminates normally.
Scan tool MB991958 does not sound when the ignition key is removed and reinserted : Refer to Inspection Procedure N-1 "ETACS-ECU
does not receive any signal from the key reminder switch."
When one of the doors is opened and closed, scan tool MB991958 does not sound : Refer to Inspection Procedure N-4 "ETACS-ECU does not
