Mitsubishi Evolution X. Manual — part 492
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42A-71
STEP 4. Check ETACS-ECU connector C-309 for loose,
corroded or damaged terminals, or terminals pushed back
in the connector.
Q: Is ETACS-ECU connector C-309 in good condition?
YES : Go to Step 5.
NO : Repair or replace the damaged component(s). Refer
to GROUP 00E, Harness Connector Inspection
. Verify that the power window works
normally.
STEP 5. Check the fusible link (34) line of power supply
circuit to the ETACS-ECU. Measure the voltage at
ETACS-ECU connector C-309.
(1) Disconnect ETACS-ECU connector C-309 and measure the
voltage available at the wiring harness side of the
connector.
(2) Measure the voltage between terminal 1 and ground.
• The voltage should measure approximately 12 volts
(battery positive voltage).
Q: Is the measured voltage approximately 12 volts (battery
positive voltage)?
YES : Go to Step 7.
NO : Go to Step 6.
STEP 6. Check the wiring harness between ETACS-ECU
connector C-309 (terminal 1) and fusible link (34).
Q: Is the wiring harness between ETACS-ECU connector
C-309 (terminal 1) and fusible link (34) in good
condition?
YES : No action is necessary and testing is complete.
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. Check that
the power window works normally.
STEP 7. Check ETACS-ECU connector C-307 for loose,
corroded or damaged terminals, or terminals pushed back
in the connector.
Q: Is ETACS-ECU connector C-307 in good condition?
YES : Go to Step 8.
NO : Repair or replace the damaged component(s). Refer
to GROUP 00E, Harness Connector Inspection
. Verify that the power window works
normally.
AC208730BI
Connector C-309
(harness side)
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BODY
42A-72
STEP 8. Check the fusible link (36) line of power supply
circuit to the ETACS-ECU. Measure the voltage at
ETACS-ECU connector C-307.
(1) Disconnect ETACS-ECU connector C-307 and measure the
voltage available at the wiring harness side of the
connector.
(2) Measure the voltage between terminal 2 and ground.
• The voltage should measure approximately 12 volts
(battery positive voltage).
Q: Is the measured voltage approximately 12 volts (battery
positive voltage)?
YES : Go to Step 10.
NO : Go to Step 9.
STEP 9. Check the wiring harness between ETACS-ECU
connector C-307 (terminal 2) and fusible link (36).
Q: Is the wiring harness between ETACS-ECU connector
C-307 (terminal 2) and fusible link (36) in good
condition?
YES : No action is necessary and testing is complete.
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. Check that
the power window works normally.
STEP 10. Check power window main switch connector
E-15 for loose, corroded or damaged terminals, or
terminals pushed back in the connector.
Q: Is power window main switch connector E-15 in good
condition?
YES : Go to Step 11.
NO : Repair or replace the damaged component(s). Refer
to GROUP 00E, Harness Connector Inspection
. Verify that the power window works
normally.
AC208730BJ
Connector C-307
(harness side)
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BODY
42A-73
STEP 11. Check the ETACS-ECU connector C-315 line
circuit to the power window main switch. Measure the
voltage at power window main switch connector E-15.
(1) Disconnect power window main switch connector E-15 and
measure the voltage available at the wiring harness side of
the connector.
(2) Measure the voltage between terminal 5 and ground.
• The voltage should measure approximately 12 volts
(battery positive voltage).
Q: Is the measured voltage approximately 12 volts (battery
positive voltage)?
YES : Go to Step 14.
NO : Go to Step 12.
STEP 12. Check ETACS-ECU connector C-315 for loose,
corroded or damaged terminals, or terminals pushed back
in the connector.
Q: Is ETACS-ECU connector C-315 in good condition?
YES : Go to Step 13.
NO : Repair or replace the damaged component(s). Refer
to GROUP 00E, Harness Connector Inspection
. Verify that the power window works
normally.
STEP 13. Check the wiring harness between ETACS-ECU
connector C-315 (terminal 10) and power window main
switch connector E-15 (terminal 5).
NOTE: Also check intermediate connector C-128 for loose, cor-
roded, or damaged terminals, or terminals pushed back in the
connector. If intermediate connector C-128 is damaged, repair
or replace the damaged component(s) as described in GROUP
00E, Harness Connector Inspection
Q: Is the wiring harness between ETACS-ECU connector
C-315 (terminal 10) and power window main switch
connector E-15 (terminal 5) in good condition?
YES : No action is necessary and testing is complete.
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. Check that
the power window works normally.
AC208730 BP
Connector E-15
(harness side)
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BODY
42A-74
STEP 14. Check the ground circuit to the power window
main switch. Measure the resistance at power window
main switch connector E-15.
(1) Disconnect power window main switch connector E-15 and
measure the resistance available at the wiring harness side
of the connector.
(2) Measure the resistance value between terminal 10 and
ground.
• The resistance should be 2 ohms or less.
Q: Is the measured resistance 2 ohms or less?
YES : Go to Step 16.
NO : Go to Step 15.
STEP 15. Check the wiring harness between power
window main switch connector E-15 (terminal 10) and
ground.
NOTE: Also check intermediate connector C-128 for loose, cor-
roded, or damaged terminals, or terminals pushed back in the
connector. If intermediate connector C-128 is damaged, repair
or replace the damaged component(s) as described in GROUP
00E, Harness Connector Inspection
Q: Is the wiring harness between power window main
switch connector E-15 (terminal 10) and ground in good
condition?
YES : No action is necessary and testing is complete.
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. Check that
the power window works normally.
STEP 16. Retest the system.
Check that the all power windows work.
Q: Is the check result normal?
YES : No action is necessary and testing is complete.
NO : Replace ETACS-ECU. Check that the power window
works normally.
AC209731
AC208731CA
Connector E-15
(harness side)
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