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Home >> Mitsubishi >> 2004 >> Lancer L4-2.0L SOHC >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Information Bus >> Testing and Inspection >> Symptom Related Diagnostic Procedures >> Symptom Diagnostic Procedures >> D - Charts >> Inspection Procedure D-1

Inspection Procedure D-1

Power Windows: Power windows do not work at all.

Power Window Relay Circuit Part 1:




Power Window Relay Circuit Part 2:






CIRCUIT OPERATION
The ETACS-ECU turns on the power window relay (installed on the junction block) to activate the power windows when the ignition switch (IG1) is turned to the "ON" position.

TROUBLESHOOTING HINTS
- The power window relay may be defective
- The ETACS-ECU may be defective
- The wiring harness or connectors may have loose, corroded, or damaged terminals, or terminals pushed back in the connector

DIAGNOSIS

Required Special Tools:
- MB991223: Harness Set
- MB991958: Scan Tool (MUT-III Sub Assembly)
- MB991824: Vehicle Communication Interface (V.C.I.)
- MB991827: MUT-III USB Cable
- MB991911: MUT-III Main Harness B
- MB991862: SWS monitor kit

STEP 1. Use scan tool MB991958 to select "ECU COMM CHK" on the SWS monitor display.
Check the ETACS-ECU.

CAUTION: To prevent damage to scan tool MB991958, always turn the ignition switch to the "LOCK" (OFF) position before connecting or disconnecting scan tool MB991958. Connect the DLC harness before connecting the column-ECU harness. Be sure to connect SWS monitor kit MB991862 after turning on scan tool MB991958.







1. Connect scan tool MB991958 to the data link connector.
2. Connect SWS monitor kit MB991862 to the column switch connector.
3. Turn the ignition switch to the "ON" position.
4. Operate scan tool MB991958 according to the procedure below to display "ECU COMM CHK."
1. Select "SYSTEM SELECT."
2. Select "SWS."
3. Select "SWS MONITOR."
4. Select "ECU COMM CHK."

5. Scan tool MB991958 should show "OK" on the "ECU COMM CHK" menu for the "ETACS ECU" menu.

Q: Is "OK" displayed on the "ETACS ECU" menu?

YES: Go to Step 2.

NO: Refer to Inspection Procedure A-3 "Communication with ETACS-ECU is not possible."

STEP 2. Check the input signal by using "DATA LIST" menu of the SWS monitor. turn the ignition switch to the "ON" position before checking input signals from the ignition switch (IG1).







1. Operate the MUT-II as follows:
1. Select "SYSTEM SELECT."
2. Select "SWS."
3. Select "SWS MONITOR."
4. Select "DATA LIST."
5. Select "ETACS ECU."




2. Check that normal conditions are displayed on the items described in the table.

Q: Is normal condition displayed?

YES: Go to Step 3.

NO: Refer to Inspection Procedure N-2 "ETACS-ECU does not receive a signal from the ignition switch (IG1)."




STEP 3. Check power window relay connector C-224 for loose, corroded or damaged terminals, or terminals pushed back in the connector.

Q: Is power window relay connector C-224 in good condition?

YES: Go to Step 4.

NO: Repair or replace the damaged component(s). Refer to Harness Connector Inspection. Verify that the power windows work normally.







STEP 4. Check the power window relay.

Q: Is the power window relay normal?

YES: Go to Step 5.

NO: Replace the power window relay. Verify that the power windows work normally.

STEP 5. Check the fusible link 5. line of power supply circuit to the power window relay. Test at power window relay connector C-224.




1. Disconnect power window relay connector C-224 and measure the voltage available at the junction block side of the connector.




2. Measure the voltage between terminal 5 and ground.
- The voltage should equal 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 power window relay connector C-224 (terminal 5) and fusible link (5).

NOTE: Also check junction block connector C-211 and intermediate connector C-126 for loose, corroded, or damaged terminals, or terminals pushed back in the connector. If junction block connector C-211 or intermediate connectors C-126 is damaged, repair or replace the damaged component(s) as described in Harness Connector Inspection.

Q: Is the wiring harness between power window relay connector C-224 (terminal 5) and fusible link (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. Verify that the power windows work normally.

STEP 7. Check the ground circuit to the power window relay. Test at power window relay connector C-224.




1. Disconnect power window relay connector C-224 and measure the resistance available at the junction block side of the connector.




2. Measure the resistance value between terminal 3 and ground.
- The resistance should equal 2 Ohms or less.

Q: Is the measured resistance 2 Ohms or less?

YES: Go to Step 10.

NO: Go to Step 8.




STEP 8. Check the wiring harness between power window relay connector C-224 (terminal 3) and ground.

NOTE: Also check junction block connector C-214 for loose, corroded, or damaged terminals, or terminals pushed back in the connector. If junction block connector C-214 is damaged, repair or replace the damaged component(s) as described in Harness Connector Inspection.

Q: Is the wiring harness between power window relay connector C-224 (terminal 3) 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. Verify that the power windows work normally.




STEP 9. Check power window main switch connector E-05 for loose, corroded or damaged terminals, or terminals pushed back in the connector.

Q: Is power window main switch connector E-05 in good condition?

YES: Go to Step 10.

NO: Repair or replace the damaged component(s). Refer to Harness Connector Inspection. Verify that the power windows work normally.

STEP 10. Check the ground circuit to the power window main switch. Test at power window main switch connector E-05.




1. Disconnect power window main switch connector E-05 and measure the resistance available at the wiring harness side of the connector.




2. Measure the resistance value between terminal 8 and ground.
- The resistance should equal 2 Ohms or less.

Q: Is the measured resistance 2 Ohms or less?

YES: Go to Step 12.

NO: Go to Step 11.







STEP 11. Check the wiring harness between power window main switch E-05 (terminal 8) and ground.

NOTE: Also check intermediate connector C-17 for loose, corroded, or damaged terminals, or terminals pushed back in the connector. If intermediate connectors C-17 is damaged, repair or replace the damaged component(s) as described in Harness Connector Inspection.

Q: Is the wiring harness between power window main switch connector E-05 (terminal 8) 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. Verify that the power windows work normally.

STEP 12. Check the battery power supply circuit to the power window main switch. Test at power window main switch connector E-05.




1. Disconnect power window main switch connector E-05 and measure the voltage available at the wiring harness side of the connector.
2. Turn the ignition switch to the "ON" position.




3. Measure the voltage between terminal 10 and ground.
- The voltage should equal approximately 12 volts (battery positive voltage).

Q: Is the measured voltage approximately 12 volts (battery positive voltage)?

YES: Replace the power window main switch. Verify that the power windows work normally.

NO: Go to Step 13.




STEP 13. Check ETACS-ECU connector C-226 for loose, corroded or damaged terminals, or terminals pushed back in the connector.

Q: Is ETACS-ECU connector C-226 in good condition?

YES: Go to Step 14.

NO: Repair or replace the damaged component(s). Refer to Harness Connector Inspection. Verify that the power windows work normally.










STEP 14. Check the wiring harness between power window relay connector C-224 (terminal 4) and power window main switch connector E-05 (terminal 10).

NOTE: Also check junction block connector C-211 and intermediate connector C-17 for loose, corroded, or damaged terminals, or terminals pushed back in the connector. If junction block connector C-211 or intermediate connectors C-17 is damaged, repair or replace the damaged component(s) as described in Harness Connector Inspection.

Q: Is the wiring harness between power window relay connector C-224 (terminal 4) and power window main switch connector E-05 (terminal 10) in good condition?

YES: Replace the ETACS-ECU. Verify that the power windows work normally.

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 windows work normally.

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