Mitsubishi Evolution X. Manual — part 489
DOOR
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BODY
42A-59
DIAGNOSTIC TROUBLE CODE PROCEDURES <POWER WINDOW>
CODE NO. L0730 P/W (DR) SW pulse 1 disconnection
CAUTION
Before replacing the ECU, ensure that the input
and output signal circuits are normal.
.
COMMENTS ON TROUBLE SYMPTOM
If the pulse 1 signal from the front power window
motor (LH) cannot be received, the power window
main switch sets the diagnosis trouble code No.
L0730.
.
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)
DOOR
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BODY
42A-60
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 (terminals Nos. 8, 9 and 12)
and front power window motor (LH) connector E-14
(terminals Nos. 3, 5 and 6).
Q: Is the wiring harness between power window main
switch connector E-15 (terminals Nos. 8, 9 and 12) and
front power window motor (LH) connector E-14
(terminals Nos. 3, 5 and 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) Operate the driver’s door window switch on the power
window main switch.
(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.
DOOR
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BODY
42A-61
CODE NO. L0732 P/W (DR) SW pulse 2 disconnection
CAUTION
Before replacing the ECU, ensure that the input
and output signal circuits are normal.
.
COMMENTS ON TROUBLE SYMPTOM
If the pulse 2 signal from the front power window
motor (LH) cannot be received, the power window
main switch sets the diagnosis trouble code No.
L0732.
.
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)
DOOR
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BODY
42A-62
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 (terminals Nos. 9, 11 and 12)
and front power window motor (LH) connector E-14
(terminals Nos. 5, 2 and 6).
Q: Is the wiring harness between power window main
switch connector E-15 (terminals Nos. 9, 11 and 12) and
front power window motor (LH) connector E-14
(terminals Nos. 5, 2 and 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) Operate the driver’s door window switch on the power
window main switch.
(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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