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Power Window Control System (Diagnostic Codes & Symptom Tests): Diagnosis Lexus GS IV

Windows 5 illustrations ~3409 words

INSPECTION PROCEDURE

Note. If the power window regulator motor assembly has been replaced with a new one, initialize the power window control system. Refer to INITIALIZATION [03/2012 - ] . If the power window regulator motor assembly and door window regulator sub-assembly have been removed and installed, or if the power window regulator motor assembly was reused when a door glass or door glass run was replaced, initialize the power window control system. Refer to INITIALIZATION [03/2012 - ] .

Note. Inspect the fuses for circuits related to this system before performing the following inspection procedure. If the power window regulator motor assembly has been replaced with a new one, initialize the power window control system. Refer to INITIALIZATION [03/2012 - ] . If the power window regulator motor assembly and door window regulator sub-assembly have been removed and installed, or if the power window regulator motor assembly was reused when a door glass or door glass run was replaced, initialize the power window control system. Refer to INITIALIZATION [03/2012 - ] .

Note. If the power window regulator motor assembly has been replaced with a new one, initialize the power window control system. Refer to INITIALIZATION [03/2012 - ] . If the power window regulator motor assembly and door window regulator sub-assembly have been removed and installed, or if the power window regulator motor assembly was reused when a door glass or door glass run was replaced, initialize the power window control system. Refer to INITIALIZATION [03/2012 - ] .

Note. If the power window regulator motor assembly has been replaced with a new one, initialize the power window control system. Refer to INITIALIZATION [03/2012 - ] . If the power window regulator motor assembly and door window regulator sub-assembly have been removed and installed, or if the power window regulator motor assembly was reused when a door glass or door glass run was replaced, initialize the power window control system. Refer to INITIALIZATION [03/2012 - ] .

Note. Inspect the fuses and relays for circuits related to this system before performing the following inspection procedure. If the power window regulator motor assembly has been replaced with a new one, initialize the power window control system. Refer to INITIALIZATION [03/2012 - ] . If the power window regulator motor assembly and door window regulator sub-assembly have been removed and installed, or if the power window regulator motor assembly was reused when a door glass or door glass run was replaced, initialize the power window control system. Refer to INITIALIZATION [03/2012 - ] .

HINT

Since the power window control system has functions that use LIN communication, first confirm that there is no malfunction in the communication system by inspecting the LIN communication functions in accordance with the "How to Proceed with Troubleshooting" procedures. Then, conduct the following inspection procedure.

Scheme 103

Scheme 103: PROCEDURE
Scheme 103: PROCEDURE

Scheme 104

Scheme 104
Scheme 104

Scheme 105

Scheme 105
Scheme 105

Scheme 106

Scheme 106
Scheme 106
  1. READ VALUE USING TECHSTREAM (D DOOR P/W SW) Use the Data List to check if the front power window regulator motor LH functioning properly. Refer to «DATA LIST / ACTIVE TEST [03/2012 - ]»(ref-600430-S14258950922014022400000) . D-DOOR MOTOR Tester Display Measurement Item/Range Normal Condition Diagnostic Note D Door P/W Up SW Driver side power window manual up signal / ON or OFF ON: Front power window switch LH manual up operated OFF: Front power window switch LH not operated - D Door P/W Down SW Driver side power window manual down signal / ON or OFF ON: Front power window switch LH manual down operated OFF: Front power window switch LH not operated - OK On Techstream screen, each item changes between ON and OFF according to above chart. NG --> See step 3 OK: Go to next step
  2. PERFORM ACTIVE TEST USING TECHSTREAM (POWER WINDOW) Select the Active Test, use the Techstream to generate a control command, and then check that the power window regulator motor operates. Refer to «DATA LIST / ACTIVE TEST [03/2012 - ]»(ref-600430-S14258950922014022400000) . D-DOOR MOTOR Tester Display Test Part Control Range Diagnostic Note Power Window Driver side power window OFF/UP/DOWN - OK The power window regulator motor operates normally. NG --> See step 11 OK --> See step 10
  3. CHECK HARNESS AND CONNECTOR (FRONT MULTIPLEX NETWORK DOOR ECU LH - BATTERY AND BODY GROUND) Disconnect the front multiplex network door ECU LH connector. Measure the voltage and resistance according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition Q19-6 (BDR) - Q19-1 (GND) Always 11 to 14 V Q19-16 (BCUT) - Q19-1 (GND) Always 11 to 14 V Q19-3 (SIG) - Q19-1 (GND) Power switch on (IG) 11 to 14 V Standard Resistance Tester Connection Condition Specified Condition Q19-1 (GND) - Body ground Always Below 1 ohms TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Front Multiplex Network Door ECU LH) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  4. CHECK HARNESS AND CONNECTOR (MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY - FRONT MULTIPLEX NETWORK DOOR ECU LH) Disconnect the Q25 multiplex network master switch connector. Disconnect the Q19 front multiplex network door ECU LH connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition Q25-11 (B) - Q19-15 (CPBJ) Always Below 1 ohms Q25-12 (GND) - Q19-9 (SGND) Always Below 1 ohms Q25-11 (B) - Body ground Always 10 kohms or higher Q25-12 (GND) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  5. CHECK HARNESS AND CONNECTOR (FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY LH - FRONT MULTIPLEX NETWORK DOOR ECU LH) Disconnect the Q17 front power window regulator motor LH connector. Disconnect the Q19 front multiplex network door ECU LH connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition Q17-2 (B) - Q19-5 (BDRJ) Always Below 1 ohms Q17-1 (E) - Q19-2 (PWE) Always Below 1 ohms Q17-2 (B) - Body ground Always 10 kohms or higher Q17-1 (E) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  6. CHECK FRONT MULTIPLEX NETWORK DOOR ECU LH Measure the voltage according to the value(s) in the table below. HINT: Check from the rear of the connector while it is connected to the front multiplex network door ECU LH. TEXT IN ILLUSTRATION *a Component with harness connected (Front Multiplex Network Door ECU LH) - - Standard Voltage Tester Connection Condition Specified Condition Q19-5 (BDRJ) - Body ground Always 11 to 14 V Q19-15 (CPBJ) - Body ground Always 11 to 14 V NG --> See step 12 OK: Go to next step
  7. INSPECT FRONT DOOR MULTIPLEX NETWORK DOOR ECU LH Remove the front multiplex network door ECU LH. Refer to «DISASSEMBLY [03/2012 - ]»(ref-600591-S42206612232014022400000) . Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 2 (PWE) - 1 (GND) Always Below 1 ohms 9 (SGND) - 1 (GND) Always Below 1 ohms NG --> See step 12 OK: Go to next step
  8. CHECK HARNESS AND CONNECTOR (MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY - FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY LH) Disconnect the Q25 multiplex network master switch connector. Disconnect the Q17 power window regulator motor RH connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition Q25-20 (UP) - Q17-10 (UP1) Always Below 1 ohms Q25-15 (DOWN) - Q17-7 (DWN1) Always Below 1 ohms Q25-20 (UP) - Body ground Always 10 kohms or higher Q25-15 (DOWN) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  9. INSPECT FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY LH NOTE: Do not apply positive (+) auxiliary battery voltage to any terminals, except terminal 2 (B), to avoid damaging the pulse sensor inside the motor. Remove the front power window regulator motor assembly LH. Refer to «REMOVAL [03/2012 - ]»(ref-600673-S23573581472014022400000) . Apply positive (+) auxiliary battery voltage to the connector terminal 2 (B). Apply negative (-) auxiliary battery voltage to the connector terminals 1 (E) and 7 (DWN1) / 10 (UP1). Check that the motor gear rotates smoothly as follows. OK Measurement Condition Specified Condition Battery positive (+) --> 2 (B) Battery negative (-): 1 (E) (3 seconds or more) --> 1 (E) and 10 (UP1) (within 1 second) --> 1 (E) (within 1 second) --> 1 (E) and 10 (UP1) Motor gear rotates clockwise (UP) Battery positive (+) --> 2 (B) Battery negative (-): 1 (E) (3 seconds or more) --> 1 (E) and 7 (DWN1) (within 1 second) --> 1 (E) (within 1 second) --> 1 (E) and 7 (DWN1) Motor gear rotates counterclockwise (DOWN) TEXT IN ILLUSTRATION *1 Motor Gear Clockwise Counterclockwise If the result is not as specified, replace the regulator motor assembly. WARNING: Reset the power window regulator motor (initialize the pulse sensor) after installing the power window regulator motor and regulator assembly onto the door. NG --> See step 12 OK --> See step 10
  10. REPLACE MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY. Refer to «REMOVAL [03/2012 - ]»(ref-600673-S08550416372014022400000)
  11. REPLACE FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY LH. Refer to «REMOVAL [03/2012 - ]»(ref-600673-S23573581472014022400000)
  12. REPLACE FRONT MULTIPLEX NETWORK DOOR ECU LH. Refer to «DISASSEMBLY [03/2012 - ]»(ref-600591-S42206612232014022400000)

Note. Inspect the fuses and relays for circuits related to this system before performing the following inspection procedure. If the power window regulator motor assembly has been replaced with a new one, initialize the power window control system. Refer to INITIALIZATION [03/2012 - ] . If the power window regulator motor assembly and door window regulator sub-assembly have been removed and installed, or if the power window regulator motor assembly was reused when a door glass or door glass run was replaced, initialize the power window control system. Refer to INITIALIZATION [03/2012 - ] .

HINT

Since the power window control system has functions that use LIN communication, first confirm that there is no malfunction in the communication system by inspecting the LIN communication functions in accordance with the "How to Proceed with Troubleshooting" procedures. Then, conduct the following inspection procedure.

Scheme 107

Scheme 107: PROCEDURE
Scheme 107: PROCEDURE
  1. READ VALUE USING TECHSTREAM (P DOOR P/W SW) Use the Data List to check if the front power window regulator motor RH is functioning properly. Refer to «DATA LIST / ACTIVE TEST [03/2012 - ]»(ref-600430-S14258950922014022400000) . P-DOOR MOTOR Tester Display Measurement Item/Range Normal Condition Diagnostic Note P Door P/W Up SW Front passenger side power window manual up signal / ON or OFF ON: Front power window switch RH manual up operated OFF: Front power window switch RH not operated - P Door P/W Down SW Front passenger side power window manual down signal / ON or OFF ON: Front power window switch RH manual down operated OFF: Front power window switch RH not operated - OK On Techstream screen, each item changes between ON and OFF according to above chart. NG --> See step 2 OK --> See step 10
  2. INSPECT FRONT POWER WINDOW REGULATOR SWITCH ASSEMBLY RH Remove the front power window regulator switch RH. Refer to «REMOVAL [03/2012 - ]»(ref-600673-S29803788822014022400000) . Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition 2 (UP) - 5 (GND) Manual up operation Below 1 ohms 10 (DOWN) - 5 (GND) Manual down operation Below 1 ohms 4 (AUTO) - 5 (GND) Auto up/down operation Below 1 ohms 2 (UP) - 5 (GND) Not operated 10 kohms or higher 10 (DOWN) - 5 (GND) Not operated 10 kohms or higher 4 (AUTO) - 5 (GND) Not operated 10 kohms or higher NG --> See step 9 OK: Go to next step
  3. CHECK HARNESS AND CONNECTOR (FRONT POWER WINDOW REGULATOR SWITCH ASSEMBLY RH - FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY RH) Disconnect the Q9 front power window regulator switch LH connector. Disconnect the Q2 front power window regulator motor LH connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition Q9-2 (UP) - Q2-10 (UP1) Always Below 1 ohms Q9-10 (DOWN) - Q2-7 (DWN1) Always Below 1 ohms Q9-2 (UP) - Body ground Always 10 kohms or higher Q9-10 (DOWN) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  4. CHECK HARNESS AND CONNECTOR (FRONT MULTIPLEX NETWORK DOOR ECU RH - BATTERY AND BODY GROUND) Disconnect the front multiplex network door ECU RH connector. Measure the voltage and resistance according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition Q4-6 (BDR) - Q4-1 (GND) Always 11 to 14 V Q4-3 (SIG) - Q4-1 (GND) Power switch on (IG) 11 to 14 V Standard Resistance Tester Connection Condition Specified Condition Q4-1 (GND) - Body ground Always Below 1 ohms TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Front Multiplex Network Door ECU RH) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  5. CHECK HARNESS AND CONNECTOR (FRONT POWER WINDOW REGULATOR SWITCH ASSEMBLY RH - FRONT MULTIPLEX NETWORK DOOR ECU RH) Disconnect the Q9 front power window regulator switch RH connector. Disconnect the Q4 front multiplex network door ECU RH connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition Q9-5 (GND) - Q4-9 (SGND) Always Below 1 ohms Q9-5 (GND) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  6. CHECK HARNESS AND CONNECTOR (FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY RH - FRONT MULTIPLEX NETWORK DOOR ECU RH) Disconnect the Q2 front power window regulator motor RH connector. Disconnect the Q4 front multiplex network door ECU RH connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition Q2-2 (B) - Q4-5 (BDRJ) Always Below 1 ohms Q2-1 (E) - Q4-2 (PWE) Always Below 1 ohms Q2-2 (B) - Body ground Always 10 kohms or higher Q2-1 (E) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  7. CHECK FRONT MULTIPLEX NETWORK DOOR ECU RH Measure the voltage according to the value(s) in the table below. HINT: Check from the rear of the connector while it is connected to the front multiplex network door ECU RH. TEXT IN ILLUSTRATION *a Component with harness connected (Front Multiplex Network Door ECU RH) - - Standard Voltage Tester Connection Condition Specified Condition Q4-5 (BDRJ) - Body ground Always 11 to 14 V NG --> See step 11 OK: Go to next step
  8. INSPECT FRONT DOOR MULTIPLEX NETWORK DOOR ECU RH Remove the front multiplex network door ECU RH. Refer to «DISASSEMBLY [03/2012 - ]»(ref-600591-S42206612232014022400000) . Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 2 (PWE) - 1 (GND) Always Below 1 ohms 9 (SGND) - 1 (GND) Always Below 1 ohms NG --> See step 11 OK --> See step 10
  9. REPLACE FRONT POWER WINDOW REGULATOR SWITCH ASSEMBLY RH. Refer to «REMOVAL [03/2012 - ]»(ref-600673-S29803788822014022400000)
  10. REPLACE FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY RH. Refer to «REMOVAL [03/2012 - ]»(ref-600673-S23573581472014022400000)
  11. REPLACE FRONT MULTIPLEX NETWORK DOOR ECU RH. Refer to «DISASSEMBLY [03/2012 - ]»(ref-600591-S42206612232014022400000)

Note. Inspect the fuses for circuits related to this system before performing the following inspection procedure. If the power window regulator motor assembly has been replaced with a new one, initialize the power window control system. Refer to INITIALIZATION [03/2012 - ] . If the power window regulator motor assembly and door window regulator sub-assembly have been removed and installed, or if the power window regulator motor assembly was reused when a door glass or door glass run was replaced, initialize the power window control system. Refer to INITIALIZATION [03/2012 - ] .

HINT

Since the power window control system has functions that use LIN communication, first confirm that there is no malfunction in the communication system by inspecting the LIN communication functions in accordance with the "How to Proceed with Troubleshooting" procedures. Then, conduct the following inspection procedure.

Note. Inspect the fuses for circuits related to this system before performing the following inspection procedure. If the power window regulator motor assembly has been replaced with a new one, initialize the power window control system. Refer to INITIALIZATION [03/2012 - ] . If the power window regulator motor assembly and door window regulator sub-assembly have been removed and installed, or if the power window regulator motor assembly was reused when a door glass or door glass run was replaced, initialize the power window control system. Refer to INITIALIZATION [03/2012 - ] .

HINT

Since the power window control system has functions that use LIN communication, first confirm that there is no malfunction in the communication system by inspecting the LIN communication functions in accordance with the "How to Proceed with Troubleshooting" procedures. Then, conduct the following inspection procedure.

Note. If the power window regulator motor assembly has been replaced with a new one, initialize the power window control system. Refer to INITIALIZATION [03/2012 - ] . If the power window regulator motor assembly and door window regulator sub-assembly have been removed and installed, or if the power window regulator motor assembly was reused when a door glass or door glass run was replaced, initialize the power window control system. Refer to INITIALIZATION [03/2012 - ] .

Note. If the power window regulator motor assembly has been replaced with a new one, initialize the power window control system. Refer to INITIALIZATION [03/2012 - ] . If the power window regulator motor assembly and door window regulator sub-assembly have been removed and installed, or if the power window regulator motor assembly was reused when a door glass or door glass run was replaced, initialize the power window control system. Refer to INITIALIZATION [03/2012 - ] .

Note. If the power window regulator motor assembly has been replaced with a new one, initialize the power window control system. Refer to INITIALIZATION [03/2012 - ] . If the power window regulator motor assembly and door window regulator sub-assembly have been removed and installed, or if the power window regulator motor assembly was reused when a door glass or door glass run was replaced, initialize the power window control system. Refer to INITIALIZATION [03/2012 - ] .

Note. If the power window regulator motor assembly has been replaced with a new one, initialize the power window control system. Refer to INITIALIZATION [03/2012 - ] . If the power window regulator motor assembly and door window regulator sub-assembly have been removed and installed, or if the power window regulator motor assembly was reused when a door glass or door glass run was replaced, initialize the power window control system. Refer to INITIALIZATION [03/2012 - ] .

Note. Recognition code registration is necessary when replacing the main body ECU (multiplex network body ECU). If the main body ECU (multiplex network body ECU) is replaced, refer to registration. Refer to REGISTRATION [03/2012 - ] .

HINT

Since the power window control system has functions that use LIN communication, first confirm that there is no malfunction in the communication system by inspecting the LIN communication functions in accordance with the "How to Proceed with Troubleshooting" procedures. Then, conduct the following inspection procedure.

Note. Recognition code registration is necessary when replacing the main body ECU (multiplex network body ECU). If the main body ECU (multiplex network body ECU) is replaced, refer to registration. Refer to REGISTRATION [03/2012 - ] .

Note. If the power window regulator motor assembly has been replaced with a new one, initialize the power window control system. Refer to INITIALIZATION [03/2012 - ] . If the power window regulator motor assembly and door window regulator sub-assembly have been removed and installed, or if the power window regulator motor assembly was reused when a door glass or door glass run was replaced, initialize the power window control system. Refer to INITIALIZATION [03/2012 - ] .

HINT

Since the power window control system has functions that use LIN communication, first confirm that there is no malfunction in the communication system by inspecting the LIN communication functions in accordance with the "How to Proceed with Troubleshooting" procedures. Then, conduct the following inspection procedure.

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