Mitsubishi Evolution X. Manual — part 490
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42A-63
CODE NO. L0734 P/W (DR) Above window position
CAUTION
Before replacing the ECU, ensure that the input
and output signal circuits are normal.
.
COMMENTS ON TROUBLE SYMPTOM
If the driver's door window glass exceeds the fully
closed position, power window main switch sets the
diagnostic trouble code No. L0734.
.
PROBABLE CAUSES
• Malfunction of the front power window motor (LH)
• Malfunction of the power window main switch
DIAGNOSTIC PROCEDURE
STEP 1. Check the power window fully closed position
(1) Carry out the learning procedures of the power window fully
.
(2) Recheck if the diagnostic trouble code is set.
a. Erase the diagnostic trouble code.
b. Press the driver’s door window switch (on the power
window main switch) down to open the window, and pull
up the driver’s door window switch to fully close the
window.
c. Check if the diagnostic trouble code is set.
Q: Is the check result normal?
YES : The procedure is complete.
NO : Go to Step 2.
STEP 2. Diagnostic trouble code recheck
Replace the front power window motor (LH). Recheck if the
diagnostic trouble code is set.
(1) Erase the diagnostic trouble code.
(2) Press the driver’s door window switch (on the power
window main switch) down to open the window, and pull up
the driver’s door window switch to fully close the window.
(3) Check if the diagnostic trouble code is set.
Q: Is the diagnostic trouble code set?
YES : Replace the power window main switch.
NO : The procedure is complete. Verify that the power
window works normally.
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42A-64
CODE NO. L0736 P/W (DR) Sensor fail (ground)
CAUTION
Before replacing the ECU, ensure that the input
and output signal circuits are normal.
.
COMMENTS ON TROUBLE SYMPTOM
If the ground fault of the front power window motor
(LH) sensor power supply is detected, power window
main switch sets the diagnosis trouble code No.
L0736
.
PROBABLE CAUSES
• Malfunction of the front power window motor (LH)
• Malfunction of the power window main switch
• Damaged wiring harness and connectors
AC609756
FRONT
POWER
WINDOW
MOTOR (LH)
FRONT
(LH)
CPU
IC
IC
LIN DRIVE
CIRCUIT
POWER WINDOW MAIN SWITCH
BLA
CK
BLA
CK
BLA
CK
BLA
CK
BLA
CK
BLA
CK
BLUE
BLUE
ORANGE
LIGHT GREEN
GREEN
VIOLET
AC
Driver's Side Power Window Circuit
AC608167AO
Connectors: E-14, E-15
E-15
E-14 (GR)
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42A-65
DIAGNOSTIC PROCEDURE
STEP 1. Check power window main switch connector E-15,
front power window motor (LH) connector E-14 for loose,
corroded or damaged terminals, or terminals pushed back
in the connector.
Q: Are power window main switch connector E-15, front
power window motor (LH) connector E-14 in good
condition?
YES : Go to Step 2.
NO : Repair or replace the damaged component(s). Refer
to GROUP 00E, Harness Connector Inspection
. Verify that the power window works
normally.
STEP 2. Check the wiring harness between power window
main switch connector E-15 (terminal No. 12) and front
power window motor (LH) connector E-14 (terminal No. 6).
Q: Is the wiring harness between power window main
switch connector E-15 (terminal No. 12) and front power
window motor (LH) connector E-14 (terminal No. 6) in
good condition?
YES : Go to Step 3.
NO : The wiring harness may be damaged or the
connector(s) may have loose, corroded or damaged
terminals, or terminals pushed back in the connector.
Repair the wiring harness as necessary. Verify that
the power window works normally.
STEP 3. Diagnostic trouble code recheck
Replace the front power window motor (LH). Recheck if the
diagnostic trouble code is set.
(1) Erase the diagnostic trouble code.
(2) Turn the ignition switch from the LOCK (OFF) position to the
ON position.
(3) Check if the diagnostic trouble code is set.
Q: Is the diagnostic trouble code set?
YES : Replace the power window main switch.
NO : The procedure is complete. Verify that the power
window works normally.
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42A-66
CODE NO. L0740 P/W (DR) 3 times jam - protection
CAUTION
Before replacing the ECU, ensure that the input
and output signal circuits are normal.
.
COMMENTS ON TROUBLE SYMPTOM
If the anti-trap function is activated consecutively
three times or more, power window main switch sets
the diagnostic trouble code No. L0740.
.
PROBABLE CAUSES
• Malfunction of the front power window motor (LH)
• Malfunction of the power window main switch
DIAGNOSTIC PROCEDURE
STEP 1. Check the power window fully closed position
(1) Carry out the learning procedures of the power window fully
.
(2) Recheck if the diagnostic trouble code is set.
a. Erase the diagnostic trouble code.
b. Turn the ignition switch from the LOCK (OFF) position to
the ON position.
c. Check if the diagnostic trouble code is set.
Q: Is the check result normal?
YES : The procedure is complete.
NO : Go to Step 2.
STEP 2. Diagnostic trouble code recheck
Replace the front power window motor (LH). Recheck if the
diagnostic trouble code is set.
(1) Erase the diagnostic trouble code.
(2) Turn the ignition switch from the LOCK (OFF) position to the
ON position.
(3) Check if the diagnostic trouble code is set.
Q: Is the diagnostic trouble code set?
YES : Replace the power window main switch.
NO : The procedure is complete. Verify that the power
window works normally.
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