Power Window Control System - Diagnosis: Other — Lexus ES XV30 facelift (2003-2006)

PRE-CHECK

POWER WINDOW OPERATION MODE HINT: Initial condition that the customizing function by the hand-held tester is not chosen is shown. Standard: POWER WINDOW OPERATION CHECKING REFERENCE Power window operation Ignition switch ON Ignition switch OFF Operative after key-OFF Ignition switch OFF Inoperative after key-OFF Manual UP Jam protection function operative Inoperative Inoperative Manual DOWN Operative Inoperative Inoperative AUTO UP Jam protection function operative Inoperative Inoperative AUTO DOWN Operative Inoperative Inoperative UP interlocked with key operation Inoperative Inoperative Inoperative DOWN interlocked with key operation Inoperative Operative Operative UP interlocked with wireless operation Inoperative Inoperative Inoperative DOWN interlocked with wireless operation Inoperative Operative Operative
POWER WINDOW FAIL-SAFE FUNCTION When an abnormality is detected in the limit switch and pulse sensor for operating the jam protection function (DTC: B1231, B1232, B1233, B1234), the following power window operations will be prohibited for fail-safe. Standard: CHECKING REFERENCE Power window operation Ignition switch ON Ignition switch OFF Operative after key-OFF Ignition switch OFF Inoperative after key-OFF Manual UP Operative (AUTO UP held) Operation prohibited - Manual DOWN Operative Operation prohibited - AUTO UP Operation prohibited Operation prohibited - AUTO DOWN Operation prohibited Operation prohibited - UP interlocked with key operation - Operation prohibited Operation prohibited DOWN interlocked with key operation - Operation prohibited Operation prohibited UP interlocked with wireless operation - Operation prohibited Operation prohibited DOWN interlocked with wireless operation - Operation prohibited Operation prohibited HINT: In case of normal limit switch, prohibition (fail-safe function) will be cancelled by fully opening the door glass of fully closed by manual operation, then AUTO operation will be possible.
USING HAND-HELD TESTER Hook up the hand-held tester to the DLC3. Monitor the ECU data by following the prompts on the tester screen. HINT: Hand-held tester has a "Snapshot" function which records the monitored data. Refer to the hand-held tester operator's manual for further details.
DTC CLEAR The DTC and freeze frame data will be erased by either action. Operate the OBDII scan tool (complying with SAE J1978) or hand-held tester to erase the codes. (See the OBD II scan tool's instruction book for operating instructions.)
DATA LIST HINT: According to the DATA LIST displayed by the OBD II scan tool or hand-held tester, you can read the value of the switch, sensor, actuator and so on without parts removal. Reading the DATA LIST as a first step of troubleshooting is one of the method to shorten the labor time. Connect the OBD II scan tool or hand-held tester to the DLC3. Turn the ignition switch ON. According to the display on tester, read the "DATA LIST". Standard [Driver side J/B (body ECU) (Data list of switch signal by DTC check)]: Measurement Item/Range (DTC No.) AND Item Item Measurement Item/Range (DTC No.) Normal Condition Diagnosis Note (Power window switch circuit on driver door) P/W master SW signal (except window lock SW/B1221 «POWER WINDOW ACTIVE TEST (DRIVER'S DOOR)»(ref-210380-S35949693222005122000000) ) B1221: Operating (ON) either SW of the master SW No output of B1221 :No operation of any SW (OFF) - (Power window switch circuit on passenger door) P/W master SW signal (except window lock SW/B1223 «POWER WINDOW ACTIVE TEST (PASSENGER'S DOOR)»(ref-210380-S30234532772005122000000) ) B1223: Passenger's door P/W SW or Manual door lock SW is on No output of B1223: No operation of any SW (OFF) - HINT: DTC No. B1221 and B1223 are the codes to inform of each switch condition and will be output when the switch is ON. In that these codes are displayed operating the switch or the switch or the codes are not displayed even with operating the switch, there may be trouble in the switch circuit. Standard [Power window regulator master switch (driver's door ECU)]: ITEM AND MEASUREMENT ITEM/DISPLAY (RANGE) Item Measurement Item/Display (Range) Normal condition Diagnostic Note D P/W AUTO SW P/W auto SW signal / ON or OFF ON: P/W auto UP/DOWN SW is ON OFF: P/W auto UP/DOWN SW is OFF - P P/W AUTO SW P/W auto SW signal/ ON or OFF ON: P/W auto UP/DOWN SW is ON OFF: P/W auto UP/DOWN SW is OFF - RR P/W AUTO SW P/W auto SW signal / ON or OFF ON: P/W auto UP/DOWN SW is ON OFF: P/W auto UP/DOWN SW is OFF - RL P/W AUTO SW P/W auto SW signal / ON or OFF ON: P/W auto UP/DOWN SW is ON OFF: P/W auto UP/DOWN SW is OFF - LIMIT SW Jam protection limit SW / ON or OFF ON: Window is almost fully open OFF: Window is open (1) (1) With the jam protection limit switch ON, the function of the jam protection will stop. If the switch does not come ON at the position where the windows are almost fully open, the windows will not fully close as the jam protection operates at the upper potion during the automatic UP performance. Standard [Power window regulator switch (passenger's door ECU)]: STANDARD [POWER WINDOW REGULATOR SWITCH (PASSENGER'S DOOR ECU) Item Measurement Item/Display (Range) Normal condition Diagnostic Note P P/W AUTO SW P/W auto SW signal / ON or OFF ON: P/W auto UP/DOWN SW is ON OFF: P/W auto UP/DOWN SW is OFF - LIMIT SW Jam protection limit SW/ ON or OFF ON: Window is almost fully open OFF: Window is open (1) (1) With the jam protection limit switch ON, the function of the jam protection will stop. If the switch does not come ON at the position where the windows are almost fully open, the windows will not fully close as the jam protection operates at the upper potion during the automatic UP performance. Standard [Power window regulator master switch (driver's door ECU)]: Standard [Power window regulator switch (passenger's door ECU]: HINT: The next data list is possible when the power window operated with "Manual UP" during the Active Test. ACTIVE TEST REFERENCE Item Measurement Item/Display (Range) Normal condition Diagnostic Note GRASS POS-1/4 To monitor the detection of a caught of the P/W / OK or CAUTION (Displayed during the active test) OK: No caught in the range between fully open and 1/4 open (1) GRASS POS-2/4 To monitor the detection of a caught of the P/W / OK or CAUTION (Displayed during the active test) OK: No caught in the range between fully 1/4 open and 2/4 open (1) GRASS POS-3/4 To monitor the detection of a caught of the P/W / OK or CAUTION (Displayed during the active test) OK: No caught in the range between fully 2/4 open and 3/4 open (1) GRASS POS-OPEN To monitor the detection of a caught of the P/W / OK or CAUTION (Displayed during the active test) OK: No caught in the range between fully 3/4 open and open (1) (1) In case that the CAUTION is displayed even without applying resistance in each range, there must be a caught somewhere in that range.
ACTIVE TEST Connect the OBD II scan tool or hand-held tester to the DLC3. Turn the ignition switch ON. According to the display on tester, perform the "ACTIVE TEST". Standard [Power window regulator master switch (driver's door ECU)]: Standard [Power window regulator switch (passenger's door ECU]: ITEM DIAGNOSTIC NOTE Item Test Details Diagnostic Note P/W UP/DOWN Drive the P/W Motor UP/DOWN During this ACTIVE TEST, jam protection caught detection can be monitored. (Refer to the DATA LIST for details) Standard [Driver side J/B (body ECU) (Rear LH door/Rear RH door)]: ITEM AND DIAGNOSTIC NOTE Item Test Details Diagnostic Note RL P/W Drive the RL P/W Motor UP/DOWN - RR P/W Drive the RR P/W Motor UP/DOWN

CIRCUIT DISCRETION

When the ignition switch is ON, the passenger's door ECU (power window switch) monitors the signal via the power window regulator master switch and drives the power window motor.

Note. Power window system use a large-scale body multiplex communications. First of all, confirm the communication function depending on the "how to proceed with troubleshooting", and check that there is no abnormality in the communication system. Then finally proceed with the troubleshooting. Also, if the power window system has a malfunction in the jam protection function, the power window AUTO UP/DOWN does not operate and a diagnostic code is recorded. Confirm the diagnostic code before troubleshooting.

Scheme 33

Scheme 33: WIRING DIAGRAM

Scheme 34

Scheme 34: INSPECTION PROCEDURE

Scheme 35

CHECK WIRE HARNESS (LIMIT SWITCH CIRCUIT) Disconnect the F13 power window regulator switch and P8 power window regulator motor assy RH connectors. Check the continuity of between the disconnected connectors. Standard: CONTINUITY BETWEEN DISCONNECTED CONNECTORS Symbols (Terminal No.) (Switch <==> Motor) Specified condition LMT <==> LMT (F13-5 <==> P8-6) Continuity SGND <==> E (F13-13 <==> P8-1) Continuity NG: REPAIR OR REPLACE WIRE HARNESS AND CONNECTOR OK: Go to next step.
CHECK WIRE HARNESS (PULSE SENSOR CIRCUIT) Disconnect the F13 power window regulator switch and P8 power window regulator motor assy RH connectors. Check the continuity of between the disconnected connectors. Standard: CONTINUITY BETWEEN DISCONNECTED CONNECTORS Symbols (Terminal No.) (Switch <==> Motor) Specified condition PLS <==> PLS (F13-15 <==> P8-3) Continuity SGND <==> E (F13-13 <==> P8-1) Continuity NG: REPAIR OR REPLACE WIRE HARNESS AND CONNECTOR OK: Go to next step.
REPLACE POWER WINDOW REGULATOR MOTOR ASSY RH Replace the power window regulator motor assy RH. Check the power window operation. OK: END NG: REPLACE POWER WINDOW REGULATOR SWITCH ASSY

When the ignition switch is ON, the power window regulator switch monitors the signal via the power window motor.

Scheme 36

Scheme 36: WIRING DIAGRAM

Scheme 37

Scheme 37: INSPECTION PROCEDURE

Scheme 38

CHECK WIRE HARNESS (LIMIT SWITCH CIRCUIT) Disconnect the R16 power window regulator switch assy rear (RH side) and P10 power window regulator motor assy RH connectors. Check the continuity of between the disconnected connectors. Standard: CONTINUITY OF BETWEEN DISCONNECTED CONNECTORS Symbols (Terminal No.) (Switch <==> Motor) Specified condition LMT <==> LMT (R16-3 <==> P10-2) Continuity SGND <==> E (R16-5 <==> P10-3) Continuity NG : REPAIR OR REPLACE WIRE HARNESS AND CONNECTOR OK : Go to next step.
CHECK WIRE HARNESS (PULSE SENSOR CIRCUIT) Disconnect the R16 power window regulator switch assy rear (RH side) and P10 power window regulator motor assy RH connectors. Check the continuity of between the disconnected connectors. Standard: CONTINUITY OF BETWEEN DISCONNECTED CONNECTORS Symbols (Terminal No.) (Switch <==> Motor) Specified condition PLS <==> PLS (R16-4 <==> P10-6) Continuity SGND <==> E (R16-5 <==> P10-3) Continuity NG : REPAIR OR REPLACE WIRE HARNESS AND CONNECTOR OK : Go to next step.
REPLACE POWER WINDOW REGULATOR MOTOR ASSY RH Replace the power window regulator motor assy RH. Check the power window operation. OK : END NG : REPLACE POWER WINDOW REGULATOR SWITCH ASSY REAR

When the ignition switch is ON, the power window regulator master switch (driver's door ECU) send to the power window regulator switch (passenger's door ECU) for multiply a remote switch signal, and then the power window regulator switch (passenger's door ECU) drives the power window motor for the passenger. And the power window regulator master switch (driver's door ECU) send driver side J/B (body ECU) to the rear window regulator switch LH and RH for multiply a remote switch signal, and then the power window regulator switch LH drives the power window motor LH and the power window regulator switch RH drives the power window motor RH.

Note. Power window system has a function with a large-scale body multiplex communications. First of all, inspect the communication function depending on the "how to proceed with troubleshooting", and check that there is no abnormality in the communication system. Then finally proceed with the troubleshooting. Also, if the power window system has a malfunction in the jam protection function, the AUTO operations are prohibited. Because of this, confirm the diagnostic code is normal before the troubleshooting.

Scheme 39

Scheme 39: WIRING DIAGRAM

Scheme 40

Scheme 40: INSPECTION PROCEDURE

CHECK POWER DOOR LOCK OPERATION NG: GO TO POWER DOOR LOCK CONTROL SYSTEM (See «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-210389-S13676071502005122000000) ) OK: Go to next step.
CHECK DTC Data list (for MANUAL UP/DOWN switch) Using the hand-held tester, check that DTC B1221 is output when the switch is operated. HINT: Using DTC "B1221" which is a code when any of the master switch is constantly turned on, the MANUAL UP/DOWN switch operation can be monitored. If there is an output of DTC "B1221" when the switch is operated, the switch circuit can be considered normal. Standard [Driver side J/B (body ECU) (Switch condition)]: STANDARD [DRIVER SIDE J/B (BODY ECU) (SWITCH CONDITION)] Item Measurement Item/Range (Display) Normal condition (Power window switch circuit on driver's door) Manual UP/DOWN switch signal/B1221 B1221: Manual UP/DOWN switch ON No output of B1221: Manual UP/DOWN switch OFF NG: REPLACE POWER WINDOW REGULATOR MASTER SWITCH ASSY OK: Go to next step.
CONFIRM REMOTE CONTROL POWER WINDOW BY MASTER SWITCH OPERATION HINT: When the rear door does not operate by master switch, proceed to "A". When the passenger's door does not operate by master switch, proceed to "B". B: REPAIR OR REPLACE WIRE HARNESS AND CONNECTOR MPX2 (D17-8) <==> MPX2 (F13-8) WIRE HARNESS A: Go to next step.
CHECK CONTINUITY OF COMMUNICATION LINE Disconnect the B5 and B6 connectors of the driver side J/B. Disconnect the R15 power window regulator switch assy rear (LH side) connector. Disconnect the R16 power window regulator switch assy rear (RH side) connector. Check the continuity of each terminal of the disconnected connectors. Standard (Rear door LH): CONTINUITY OF EACH TERMINAL OF DISCONNECTED CONNECTORS Symbols (Terminal No.) (Driver side J/B <==> Switch) Specified condition MPX4 <==> MPX1 (B6-5 <==> R15-8) Continuity Standard (Rear door RH): CONTINUITY OF EACH TERMINAL OF DISCONNECTED CONNECTORS Symbols (Terminal No.) (Driver side J/B <==> Switch) Specified condition MPX5 <==> MPX1 (B5-1 <==> R16-8) Continuity HINT: When the rear door LH does not inspect the continuity, proceed to "NG-A". When the rear door RH does not inspect the continuity, proceed to "NG-B". NG-A: REPAIR OR REPLACE WIRE HARNESS AND CONNECTOR MPX4 (B6-5) <==> MPX1 (R15-8) WIRE HARNESS NG-B: REPAIR OR REPLACE WIRE HARNESS AND CONNECTOR MPX5 (B5-1) <==> MPX1 (R16-8) WIRE HARNESS OK: REPLACE DRIVER SIDE JUNCTION BLOCK ASSY

When the driver's door is held in the locking state for 2.5 seconds or more via the key operation with no key inserted in the ignition switch, the power window regulator master switch (driver's door ECU) drives the power window motor at the same time when a signal is transmitted multiply to the power window regulator switch (passenger's door ECU) and driver side J/B (body ECU). Then the power window regulator switch (passenger's door ECU) drives the power window motor, and the driver side J/B (body ECU) is transmitted multiply to the rear power window regulator switch LH and RH, then the rear power window regulator switch LH drives the power window motor LH, the rear power window regulator switch RH drives the power window motor RH.

Power Window Control System - Diagnosis: Other Lexus ES XV30 facelift