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Home/Lexus/LX/Lexus LX J200 (2007-2012)/Repair manual/Collision/avoidance/Pre-Collision System (Diagnostic Codes): Other
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Pre-Collision System (Diagnostic Codes): Other Lexus LX J200

Collision/avoidance ~2310 words

PROCEDURE

  1. CHECK SEAT BELT CONTROL ECU Disconnect the E41 seat belt control ECU connector. Measure the resistance according to the value(s) in the table below. Standard Resistance FOR LH Tester Connection Condition Specified Condition E41-3 (MOL+) - Body ground Always 1 Mohms or higher E41-4 (MOL-) - Body ground FOR RH Tester Connection Condition Specified Condition E41-1 (MOR-) - Body ground Always 1 Mohms or higher E41-2 (MOR+) - Body ground NG --> See step 2 OK --> See step 4
  2. CHECK HARNESS AND CONNECTOR (FRONT SEAT OUTER BELT - SEAT BELT CONTROL ECU) Disconnect the E41 seat belt control ECU connector. Disconnect the K11*1 or L5*2 front seat outer belt connector. *1: for LH *2: for RH Measure the resistance according to the value(s) in the table below. Standard Resistance FOR LH Tester Connection Condition Specified Condition K11-1 (MOL+) - Body ground Always 1 Mohms or higher K11-2 (MOL-) - Body ground FOR RH Tester Connection Condition Specified Condition L5-1 (MOR+) - Body ground Always 1 Mohms or higher L5-2 (MOR-) - Body ground RESULT Result Proceed to OK (for DTC B2001) A OK (for DTC B2006) B NG C C --> REPAIR OR REPLACE HARNESS OR CONNECTOR B --> See step 5 A --> See step 3
  3. REPLACE FRONT SEAT OUTER BELT ASSEMBLY RH. Refer to «REMOVAL»(ref-385314-S20923964312011021400000)
  4. REPLACE SEAT BELT CONTROL ECU. Refer to «REMOVAL»(ref-385291-S04469957702011021400000)
  5. REPLACE FRONT SEAT OUTER BELT ASSEMBLY LH. Refer to «REMOVAL»(ref-385314-S20923964312011021400000)
  1. CHECK DTC (PRE-COLLISION SYSTEM) Using the Techstream, enter the following menus: Body Electrical / Pre-Collision / Trouble Code. Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-385309-S01441144712011021400000) . Check for DTCs. Refer to «DTC CHECK / CLEAR»(ref-385309-S01441144712011021400000) . OK DTC is not output. NG --> See step 3 OK --> See step 2
  2. USE SIMULATION METHOD TO CHECK. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-385196-S09917434812011021400000)
  3. REPLACE SEAT BELT CONTROL ECU. Refer to «REMOVAL»(ref-385291-S04469957702011021400000)
  1. CHECK DTC (DYNAMIC RADAR CRUISE CONTROL SYSTEM) Using the Techstream, enter the following menus: Powertrain / Radar Cruise / Trouble Code. Clear the DTC. Refer to «DTC CHECK / CLEAR»(ref-385309-S01441144712011021400000) . Perform the following to make sure the DTC detection conditions are met. HINT: If the detection conditions are not met, the system cannot detect the malfunction. Drive the vehicle at a speed of 40 km/h (25 mph) or more. Turn the cruise control main switch on to set the vehicle-to-vehicle distance control mode to the standby state. Check for DTCs. Refer to «DTC CHECK / CLEAR»(ref-385309-S01441144712011021400000) . OK DTC P1570 is not output. NG --> See step 4 OK: Go to next step
  2. CHECK DTC (PRE-COLLISION SYSTEM) Using the Techstream, enter the following menus: Body Electrical / Pre-Collision / Trouble Code. Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-385309-S01441144712011021400000) . Check for DTCs. Refer to «DTC CHECK / CLEAR»(ref-385309-S01441144712011021400000) . OK DTC B2055 is not output. NG --> See step 5 OK --> See step 3
  3. USE SIMULATION METHOD TO CHECK. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-385196-S09917434812011021400000)
  4. GO TO DYNAMIC RADAR CRUISE CONTROL SYSTEM. Refer to «DTC P1570: Radar Sensor Malfunction»(ref-385230-S36900803412011021400000)
  5. REPLACE SEAT BELT CONTROL ECU. Refer to «REMOVAL»(ref-385291-S04469957702011021400000)
  1. CHECK DTC (DYNAMIC RADAR CRUISE CONTROL SYSTEM) Using the Techstream, enter the following menus: Powertrain / Radar Cruise / Trouble Code. Clear the DTC. Refer to «DTC CHECK / CLEAR»(ref-385229-S12970980452011021400000) . Perform the following to make sure the DTC detection conditions are met. HINT: If the detection conditions are not met, the system cannot detect the malfunction. Drive the vehicle at a speed of 40 km/h (25 mph) or more. Turn the cruise control main switch on to set the vehicle-to-vehicle distance control mode to the standby state. Check for DTCs. Refer to «DTC CHECK / CLEAR»(ref-385229-S12970980452011021400000) . OK DTC P1572 is not output. NG --> See step 4 OK: Go to next step
  2. CHECK DTC (PRE-COLLISION SYSTEM) Using the Techstream, enter the following menus: Body Electrical / Pre-Collision / Trouble Code. Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-385309-S01441144712011021400000) . Check for DTCs. Refer to «DTC CHECK / CLEAR»(ref-385309-S01441144712011021400000) . OK DTC B2056 is not output. NG --> See step 5 OK --> See step 3
  3. USE SIMULATION METHOD TO CHECK. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-385196-S09917434812011021400000)
  4. GO TO DYNAMIC RADAR CRUISE CONTROL SYSTEM. Refer to «DTC P1572: Improper Aiming of Radar Sensor Beam Axis»(ref-385230-S38062227902011021400000)
  5. REPLACE SEAT BELT CONTROL ECU. Refer to «REMOVAL»(ref-385291-S04469957702011021400000)
  1. CHECK DTC (VEHICLE STABILITY CONTROL SYSTEM) Using the Techstream, enter the following menus: Chassis / ABS/VSC/TRAC / Trouble Code. Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-385226-S17305943052011021400000) . Check for DTCs. Refer to «DTC CHECK / CLEAR»(ref-385226-S17305943052011021400000) . OK DTC C1234 is not output. NG --> See step 4 OK: Go to next step
  2. CHECK DTC (PRE-COLLISION SYSTEM) Using the Techstream, enter the following menus: Body Electrical / Pre-Collision / Trouble Code. Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-385309-S01441144712011021400000) . Check for DTCs. Refer to «DTC CHECK / CLEAR»(ref-385309-S01441144712011021400000) . OK DTC B2057 is not output. NG --> See step 5 OK --> See step 3
  3. USE SIMULATION METHOD TO CHECK. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-385196-S09917434812011021400000)
  4. GO TO VEHICLE STABILITY CONTROL SYSTEM. Refer to «DTC C1232/32: Stuck in Deceleration Sensor; DTC C1234/34: Yaw Rate Sensor Malfunction; DTC C1243/43: Acceleration Sensor Stuck Malfunction; DTC C1244/44: Open or Short in Deceleration Sensor Circuit; DTC C1245/45: Acceleration Sensor Output Malfunction; DTC C1381/97: Acceleration Sensor Power Supply Voltage Malfunction»(ref-385232-S09397443202011021400000)
  5. REPLACE SEAT BELT CONTROL ECU. Refer to «REMOVAL»(ref-385291-S04469957702011021400000)
  1. CHECK DTC (CAN COMMUNICATION SYSTEM) Use the Techstream to check if the CAN communication system is functioning normally. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-385222-S11207754182011021400000) . OK DTC U0126 is not output. NG --> See step 4 OK: Go to next step
  2. CHECK DTC (PRE-COLLISION SYSTEM) Using the Techstream, enter the following menus: Body Electrical / Pre-Collision / Trouble Code. Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-385309-S01441144712011021400000) . Check for DTCs. Refer to «DTC CHECK / CLEAR»(ref-385309-S01441144712011021400000) . OK DTC B2058 is not output. NG --> See step 5 OK --> See step 3
  3. USE SIMULATION METHOD TO CHECK. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-385196-S09917434812011021400000)
  4. GO TO CAN COMMUNICATION SYSTEM. Refer to «DTC U0126: Lost Communication with Steering Angle Sensor Module»(ref-385287-S05618625062011021400000)
  5. REPLACE SEAT BELT CONTROL ECU. Refer to «REMOVAL»(ref-385291-S04469957702011021400000)
  1. READ VALUE USING TECHSTREAM (VEHICLE SPEED) Using the Techstream, enter the following menus: Body Electrical / Combination Meter / Data List. COMBINATION METER Tester Display Measurement Item/Range Normal Condition Diagnostic Note Vehicle Speed Meter Vehicle speed/ Min.: 0 km/h (0 mph) Max.: 255 km/h (158 mph) Almost same as actual speed (when driving) The speed is indicated on the speedometer. Read the value displayed on the Techstream. OK Vehicle speed displayed on the Techstream is almost the same as actual vehicle speed measured using speedometer tester (calibrated chassis dynamometer). NG --> See step 4 OK: Go to next step
  2. CHECK DTC (MALFUNCTION IN CAN COMMUNICATION SYSTEM WITH ECM) Using the Techstream, clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-385309-S01441144712011021400000) . Check for DTCs. Refer to «DTC CHECK / CLEAR»(ref-385309-S01441144712011021400000) . RESULT Result Proceed to DTC is not output A CAN communication system DTCs (U0073, U0100, U0122, U0126) are output B Pre-collision system DTC B2059 is output C C --> See step 6 B --> See step 5 A --> See step 3
  3. USE SIMULATION METHOD TO CHECK. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-385196-S09917434812011021400000)
  4. REPLACE COMBINATION METER. Refer to «REMOVAL»(ref-385212-S42439280212011021400000)
  5. GO TO CAN COMMUNICATION SYSTEM. Refer to «DIAGNOSIS SYSTEM»(ref-385222-S33412669092011021400000)
  6. REPLACE SEAT BELT CONTROL ECU. Refer to «REMOVAL»(ref-385291-S04469957702011021400000)
  1. CHECK DTC (CAN COMMUNICATION SYSTEM) Use the Techstream to check if the CAN communication system is functioning normally. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-385222-S11207754182011021400000) . OK DTC U0122 is not output. NG --> See step 6 OK: Go to next step
  2. CHECK DTC (VEHICLE STABILITY CONTROL SYSTEM) Using the Techstream, enter the following menus: Chassis / ABS/VSC/TRAC / Trouble Code. Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-385226-S17305943052011021400000) . Check for DTCs. Refer to «DTC CHECK / CLEAR»(ref-385226-S17305943052011021400000) . OK DTC is not output. NG --> See step 4 OK: Go to next step
  3. CHECK DTC (PRE-COLLISION SYSTEM) Using the Techstream, enter the following menus: Body Electrical / Pre-Collision / Trouble Code. Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-385309-S01441144712011021400000) . Check for DTCs. Refer to «DTC CHECK / CLEAR»(ref-385309-S01441144712011021400000) . OK DTC B2060 is not output. NG --> See step 5 OK --> See step 7
  4. GO TO VEHICLE STABILITY CONTROL SYSTEM. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-385226-S23998773362011021400000)
  5. REPLACE SEAT BELT CONTROL ECU. Refer to «REMOVAL»(ref-385291-S04469957702011021400000)
  6. GO TO CAN COMMUNICATION SYSTEM. Refer to «DTC U0122: Lost Communication with Vehicle Dynamics Control Module; DTC U0129: Lost Communication with Brake System Control Module»(ref-385287-S42903197162011021400000)
  7. USE SIMULATION METHOD TO CHECK. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-385196-S09917434812011021400000)
  1. CHECK DTC (DYNAMIC RADAR CRUISE CONTROL SYSTEM) Using the Techstream, enter the following menus: Powertrain / Radar Cruise / Trouble Code. Clear the DTC. Refer to «DTC CHECK / CLEAR»(ref-385229-S12970980452011021400000) . Perform the following to make sure the DTC detection conditions are met. HINT: If the detection conditions are not met, the system cannot detect the malfunction. Drive the vehicle at a speed of 40 km/h (25 mph) or more. Turn the cruise control main switch on to set the vehicle-to-vehicle distance control mode to the standby state. Check for DTCs. Refer to «DTC CHECK / CLEAR»(ref-385229-S12970980452011021400000) . OK DTC P1617 is not output. NG --> See step 4 OK: Go to next step
  2. CHECK DTC (PRE-COLLISION SYSTEM) Using the Techstream, enter the following menus: Body Electrical / Pre-Collision / Trouble Code. Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-385309-S01441144712011021400000) . Check for DTCs. Refer to «DTC CHECK / CLEAR»(ref-385309-S01441144712011021400000) . OK DTC B2065 is not output. NG --> See step 5 OK --> See step 3
  3. USE SIMULATION METHOD TO CHECK. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-385196-S09917434812011021400000)
  4. GO TO DYNAMIC RADAR CRUISE CONTROL SYSTEM. Refer to «DTC P1617: Distance Control ECU Malfunction»(ref-385230-S19113003122011021400000)
  5. REPLACE SEAT BELT CONTROL ECU. Refer to «REMOVAL»(ref-385291-S04469957702011021400000)
  1. PERFORM ACTIVE TEST USING TECHSTREAM (BUZZER) Using the Techstream, enter the following menus: Chassis / ABS/VSC/TRAC / Active Test. ABS/VSC/TRAC Tester Display Test Part Control Range Diagnostic Note Buzzer Skid control buzzer sounds OFF or ON - OK Skid control buzzer sounds. NG --> See step 3 OK --> See step 2
  2. REPLACE SEAT BELT CONTROL ECU. Refer to «REMOVAL»(ref-385291-S04469957702011021400000)
  3. GO TO VEHICLE STABILITY CONTROL SYSTEM. Refer to «Skid Control Buzzer Circuit»(ref-385232-S23634631332011021400000)
  1. CHECK DTC (VEHICLE STABILITY CONTROL SYSTEM) Using the Techstream, enter the following menus: Chassis / ABS/VSC/TRAC / Trouble Code. Check for DTCs. Refer to «DTC CHECK / CLEAR»(ref-385226-S17305943052011021400000) . OK DTC C1249 is not output. NG --> See step 4 OK: Go to next step
  2. CHECK DTC (PRE-COLLISION SYSTEM) Using the Techstream, enter the following menus: Body Electrical / Pre-Collision / Trouble Code. Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-385309-S01441144712011021400000) . Check for DTCs. Refer to «DTC CHECK / CLEAR»(ref-385309-S01441144712011021400000) . OK DTC B2071 is not output. NG --> See step 5 OK --> See step 3
  3. USE SIMULATION METHOD TO CHECK. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-385196-S09917434812011021400000)
  4. GO TO VEHICLE STABILITY CONTROL SYSTEM. Refer to «DTC C1249/49: Open in Stop Light Switch Circuit»(ref-385232-S07143819362011021400000)
  5. REPLACE SEAT BELT CONTROL ECU. Refer to «REMOVAL»(ref-385291-S04469957702011021400000)
  1. CHECK DTC (CAN COMMUNICATION SYSTEM) Use the Techstream to check if the CAN communication system is functioning normally. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-385222-S11207754182011021400000) . OK DTC U0151 is not output. NG --> See step 5 OK: Go to next step
  2. CHECK DTC (AIRBAG SYSTEM) Using the Techstream, enter the following menus: Body Electrical / SRS Airbag / Trouble Code. Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-385233-S26916866102011021400000) . Check for DTCs. Refer to «DTC CHECK / CLEAR»(ref-385233-S26916866102011021400000) . OK DTC B1655 is not output. NG --> See step 6 OK: Go to next step
  3. CHECK DTC (PRE-COLLISION SYSTEM) Using the Techstream, enter the following menus: Body Electrical / Pre-Collision / Trouble Code. Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-385309-S01441144712011021400000) . Check for DTCs. Refer to «DTC CHECK / CLEAR»(ref-385309-S01441144712011021400000) . OK DTC B2074 is not output. NG --> See step 7 OK --> See step 4
  4. USE SIMULATION METHOD TO CHECK. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-385196-S09917434812011021400000)
  5. GO TO CAN COMMUNICATION SYSTEM. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-385222-S04985080032011021400000)
  6. GO TO AIRBAG SYSTEM. Refer to «DTC B1655/37: Driver Side Seat Belt Buckle Switch Circuit Malfunction»(ref-385307-S06337489222011021400000)
  7. REPLACE SEAT BELT CONTROL ECU. Refer to «REMOVAL»(ref-385291-S04469957702011021400000)
  1. CHECK DTC (CAN COMMUNICATION SYSTEM) Use the Techstream to check if the CAN communication system is functioning normally. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-385222-S11207754182011021400000) . OK DTC U0151 is not output. NG --> See step 5 OK: Go to next step
  2. CHECK DTC (AIRBAG SYSTEM) Using the Techstream, enter the following menus: Body Electrical / SRS Airbag / Trouble Code. Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-385233-S26916866102011021400000) . Check for DTCs. Refer to «DTC CHECK / CLEAR»(ref-385233-S26916866102011021400000) . OK DTC B1650 is not output. NG --> See step 6 OK: Go to next step
  3. CHECK DTC (PRE-COLLISION SYSTEM) Using the Techstream, enter the following menus: Body Electrical / Pre-Collision / Trouble Code. Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-385309-S01441144712011021400000) . Check for DTCs. Refer to «DTC CHECK / CLEAR»(ref-385309-S01441144712011021400000) . OK DTC B2075 is not output. NG --> See step 7 OK --> See step 4
  4. USE SIMULATION METHOD TO CHECK. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-385196-S09917434812011021400000)
  5. GO TO CAN COMMUNICATION SYSTEM. Refer to «DIAGNOSIS SYSTEM»(ref-385222-S33412669092011021400000)
  6. GO TO AIRBAG SYSTEM. Refer to «DTC B1650/32: Occupant Classification System Malfunction»(ref-385307-S01732905962011021400000)
  7. REPLACE SEAT BELT CONTROL ECU. Refer to «REMOVAL»(ref-385291-S04469957702011021400000)
  1. CHECK DTC (CAN COMMUNICATION SYSTEM) Use the Techstream to check if the CAN communication system is functioning normally. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-385222-S11207754182011021400000) . OK DTC is not output. NG --> See step 3 OK --> See step 2
  2. USE SIMULATION METHOD TO CHECK. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-385196-S09917434812011021400000)
  3. GO TO CAN COMMUNICATION SYSTEM. Refer to «DIAGNOSIS SYSTEM»(ref-385222-S33412669092011021400000)

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