Lancer LS L4-2.0L SOHC (2002)
3. Select "LIGHTING - H/L AUTO-CUT" (FUNCTION DIAG), and check that normal conditions are displayed on the items described in the table.
4. When the driver's door is opened, check that normal conditions are displayed on the items described in the table.
Q: Are normal conditions displayed on the "TAILLIGHT SW", "IG SW (IG1)", "FRONT DOOR SW" and "H/L AUTO-CUT"?
YES: Replace the front-ECU. Check that the headlight automatic shutdown function works normally.
NO:
-
Normal condition is not displayed on the "TAIL LIGHT SW: Refer to Inspection Procedure L-5 "ETACS-ECU does not receive a signal
from the tail light switch."
-
Normal condition is not displayed on the "IG SW (IG1)": Refer to Inspection Procedure L-2 "ETACS-ECU does not receive a signal from
the ignition switch (IG1)."
-
Normal condition is not displayed on the "FRONT DOOR SW": Refer to Inspection Procedure L-5 "ETACS-ECU does not receive a
signal from the driver's or the front passenger's door switch."
-
Normal condition is not displayed on the "H/L AUTO-CUT": Replace the front-ECU. Check that the headlight automatic shutdown
function works normally.
Inspection Procedure I-10
Headlight, Tail Light: 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
Malfunction of the front-ECU
DIAGNOSIS
Replace the front-ECU.
Check that the headlight dimmer switch automatic resetting function works normally.
Inspection Procedure J-1
Flasher Timer: Turn-signal Lights does not Flash when the Turn-signal Light Switch is Turned On