Part 3 of 3

INSPECTION PROCEDURE 4: Front and/or Rear Passenger's Power Window(s) do not work by means of The Power Window Main Switch.

CAUTION: Before replacing the ECU, ensure that the power supply circuit, the ground circuit and the communication circuit are normal.

Power Window Circuit (Part 1):

Power Window Circuit (Part 2):

CIRCUIT OPERATION
When you operate each power window switch for front or rear passengers (incorporated in the power window main switch), the corresponding power window motor operates, opening or closing each power window.

TECHNICAL DESCRIPTION (COMMENT)
If the corresponding power window opens and closes normally when each power window sub-switch is operated, the power window main switch may be defective.

TROUBLESHOOTING HINT
- The power window main switch may be defective
- The front power window sub switch may be defective
- The rear power window sub switches 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

DIAGNOSTIC PROCEDURE

Required Special Tools:
- MB992006: Extra fine probe
- MB991223: Harness set
- MB991958: Scan Tool (M.U.T.-III Sub Assembly)
- MB991824: Vehicles Communication Interface (V.C.I.)
- MB991827: M.U.T.-III USB Cable
- MB991910: M.U.T.-III Main Harness A (Vehicles with CAN communication system)

STEP 1. Check the power window main switch.
Check that the driver's power window works by means of the power window main switch.

Q: Is the check result normal?

YES : Go to Step 2.

NO : Refer to inspection procedure 2 "Driver's power window does not work by means of the power window main switch."

STEP 2. Check the power window sub switch.
Check that each power window works by means of the respective power window sub switch when the power window lock switch is turned off.

Q: Is the check result normal?

YES : Go to Step 3.

NO : Refer to inspection procedure 3 "Relevant power window(s) does not work by means of the front and rear passenger's power window sub switches."

STEP 3. Check the power supply system.
With the ignition switch in the LOCK (OFF) position, check if the following function operates normally:
- Hazard warning light

Q: Is the check result normal?

YES : Go to Step 4.

NO : Refer to Chassis Electrical - Malfunction of ETACS-ECU power supply circuit.

STEP 4. Using scan tool MB991958, read the diagnostic trouble code.

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.






1. Connect scan tool MB991958. Refer to "How to connect scan tool (M.U.T.-III)."
2. Turn the ignition switch to the "ON" position.
3. Check whether the ETACS-ECU related DTC is set.
4. Turn the ignition switch to the "LOCK" (OFF) position.

Q: Is the DTC set?

YES : Diagnose the ETACS-ECU. Refer to Local Interconnect Network (LIN), Diagnostic trouble code chart.

NO : Go to Step 5.

STEP 5. 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 6.

NO : Repair or replace the damaged component(s). Refer to General (Electrical), Harness Connector Inspection. When the power window main switch is operated, the front and/or rear passenger's power windows should raise and lower normally.

STEP 6. 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 4 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 9.

NO : Go to Step 7.

STEP 7. 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 8.

NO : Repair or replace the damaged component(s). Refer to General (Electrical), Harness Connector Inspection. When the When the power window main switch is operated, the front and/or rear passenger's power windows should raise and lower normally.

STEP 8. Check the wiring harness between ETACS-ECU connector C-315 (terminal No. 8) and power window main switch connector E-15 (terminal No. 4).

NOTE: Also check intermediate connector C-128. If intermediate connector C-128 is damaged, repair or replace the damaged component(s) as described in General (Electrical), Harness Connector Inspection.

Q: Is the wiring harness between ETACS-ECU connector C-315 (terminal No. 8) and power window main switch connector E-15 (terminal No. 4) 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. When the When the power window main switch is operated, the front and/or rear passenger's power windows should raise and lower normally.

STEP 9. Retest the system.
Replace the power window main switch. Check that the front and/or rear passenger's power windows work by means of the power window main switch.

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.

INSPECTION PROCEDURE 5: The Power Window Timer Function does not work Normally.

CAUTION: Before replacing the ECU, ensure that the power supply circuit, the ground circuit and the communication circuit are normal.

COMMENTS ON TROUBLE SYMPTOM
If the power window timer does not work normally, a malfunction of the power window main switch or ETACS-ECU is suspected.

PROBABLE CAUSES
- Malfunction of the front door switch (LH)
- Malfunction of the front door switch (RH)
- Malfunction of the power window main switch
- Malfunction of ETACS-ECU
- Damaged wiring harness and connectors

DIAGNOSTIC PROCEDURE

Required Special Tools:
- MB992006: Extra fine probe
- MB991223: Harness set
- MB991958: Scan Tool (M.U.T.-III Sub Assembly)
- MB991824: Vehicles Communication Interface (V.C.I.)
- MB991827: M.U.T.-III USB Cable
- MB991910: M.U.T.-III Main Harness A

STEP 1. Check the power supply system.
With the ignition switch in the LOCK (OFF) position, check if the following function operates normally:
- Hazard warning lamp

Q: Is the check result normal?

YES : Go to Step 2.

NO : Refer to Chassis Electrical - Malfunction of ETACS-ECU power supply circuit.

STEP 2. Using scan tool MB991958, check data list.
Check the signals related to the power window timer function operation.






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.

1. Connect scan tool MB991958. Refer to "How to connect scan tool (M.U.T.-III)."
2. Turn the ignition switch to the "ON" position.
3. Check the data list of the ETACS.
- Turn the ignition switch to the LOCK (OFF) position.
- Close the driver's door.
- Close the passenger's door.






4. Turn the ignition switch to the "LOCK" (OFF) position.

OK: Normal condition is displayed.

Q: Is the check result normal?

YES ]Normal conditions are displayed for all the items.[ : Go to Step 3.

NO ]Normal condition is not displayed for item No. 254.[ : Refer to Chassis Electrical - inspection procedure 2: "The ignition switch (IG1) signal is not received."

NO ]Normal condition is not displayed for item No. 256.[ : Refer to Chassis Electrical - inspection procedure 5: "The front door switch (driver's side) signal is not received."

NO ]Normal condition is not displayed for item No. 257.[ : Refer to Chassis Electrical - inspection procedure 6: the front door switch (passenger's side) signal is not received.

STEP 3. Retest the system.
Check that the power window timer function works normally.

Q: Is the check result normal?

YES : No action is necessary and testing is complete.

NO : Replace the power window main switch. Check that the power window timer function works normally.

INSPECTION PROCEDURE 6: Power Window Anti-trap Function does not work Normally. ]Driver's side seat[

COMMENTS ON TROUBLE SYMPTOM
Malfunction of the power window motor revolution detection sensor is suspected.

PROBABLE CAUSES
- Malfunction of the power window motor
- Damaged wiring harness and connectors

DIAGNOSTIC PROCEDURE

Required Special Tools:
- MB992006: Extra fine probe
- MB991223: Harness set
- MB991958: Scan Tool (M.U.T.-III Sub Assembly)
- MB991824: Vehicles Communication Interface (V.C.I.)
- MB991827: M.U.T.-III USB Cable
- MB991910: M.U.T.-III Main Harness A

STEP 1. Using scan tool MB991958, read the diagnostic trouble code.

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.






1. Connect scan tool MB991958. Refer to "How to connect scan tool (M.U.T.-III)."
2. Turn the ignition switch to the "ON" position.
3. Check whether the power window main switch related DTC is set.
4. Turn the ignition switch to the "LOCK" (OFF) position.

Q: Is the DTC set?

YES : Diagnose the power window main switch. Refer to Diagnostic trouble code chart.

NO : Go to Step 2.

STEP 2. Check the power window operating current.
Check that the power window operating current is normal. Power Window Operating Current Check

Q: Is the check result normal?

YES : Door window glass adjustment. Then go to Step 3.

NO : Replace the power window motor. Verify that the power window anti-trap function works normally.

STEP 3. Confirm the power window learning function.
Check that the power window switch has learned the fully closed position of the windows.

Q: Is the check result normal?

YES : Go to Step 4.

NO : Make the power window switch learn the fully closed position of the windows. Verify that the power window anti-trap function works normally.

STEP 4. Retest the system.
Check that the power window anti-trap function works.

Q: Is the check result normal?

YES : No action is necessary and testing is complete.

NO : Replace the front power window motor (LH). Verify that the power window anti-trap function works normally.

INSPECTION PROCEDURE 7: The Window Glass Lowers Automatically while it is Rising.

COMMENTS ON TROUBLE SYMPTOM
If the sliding resistance is too great when the window is being raised or the window glass encounters an object, the window glass will lower by approximately 150 mm (5.9 inches).

PROBABLE CAUSES
- Improper adjusted door window glass
- Incorrectly installed or warped glass slider
- Malfunction of the power window motor
- Malfunction of the window regulator

DIAGNOSTIC PROCEDURE

STEP 1. Determine a trouble spot.

Q: Which type of the power window is installed on vehicle? Driver's side seat: Go to Step 2. Except driver's side seat: Go to Step 3.

STEP 2. Check the power window anti-trap function.
Check that the power window anti-trap function works. Power Window Safety Mechanism Check [Driver's Side]

Q: Is the check result normal?

YES : Go to Step 3.

NO : Refer to inspection procedure 6 "Power window anti-trap function does not work normally."

STEP 3. Check that the door window glasses are installed correctly.
Check that the door window glasses are installed correctly.

Q: Is the check result normal?

YES : Go to Step 4.

NO : Adjust the door window glass.

STEP 4. Retest the system.
Check that the power window does not lower while it is being raised.

Q: Is the check result normal?

YES : No action is necessary and testing is complete.

NO : Replace the power window motor of the defective window.