Lancer L4-2.0L SOHC (2004)
Normal conditions are displayed for all the items : Replace the front-ECU. Verify that the headlight automatic shutdown function now works
normally.
The scan tool does not show the respective normal condition for item "TAILLIGHT SW" : Refer to Inspection Procedure N-5
"ETACS-ECU does not receive a signal from the taillight switch."
The scan tool does not show the respective normal condition for item "IG SW (IG1)" : Refer to Inspection Procedure N-2 "ETACS-ECU
does not receive a 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 N-4
"ETACS-ECU does not receive a signal from the driver's or the front passenger's door switch."
The scan tool does not show the respective normal condition for item "H/L AUTO-CUT" : Replace the front-ECU. Verify that the headlight
automatic shutdown function now works normally.
Inspection Procedure J-10
Headlight and Taillight: Headlight dimmer switch automatic resetting function does not work normally.
Headlight (Dimmer/Passing) Input Signal
CIRCUIT OPERATION
The headlight dimmer switch automatic resetting function is controlled by the front-ECU.
TECHNICAL DESCRIPTION (COMMENT)
If the headlight dimmer switch automatic resetting function does not work normally, the front-ECU may be defective.
TROUBLESHOOTING HINT
The front-ECU may be defective
DIAGNOSIS
Replace the front-ECU.
Verify that the headlight dimmer switch automatic resetting function works normally.
Inspection Procedure J-11
Headlight and Taillight: Daytime running light function does not work normally. <vehicles with daytime running light function>