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Pre-Collision System (Diagnostic Codes & Circuit Tests): Other Lexus IS II facelift

Collision/avoidance ~2360 words

PROCEDURE

  1. INSPECT FRONT SEAT OUTER BELT ASSEMBLY RH Disconnect the P8 connector of the front seat outer belt assembly RH. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Condition Specified Condition P8-1 - Body ground Always 1 Mohms or higher P8-2 - Body ground Always 1 Mohms or higher Reconnect the P8 connector of the front seat outer belt assembly RH. NG --> See step 4 OK: Go to next step
  2. CHECK HARNESS AND CONNECTOR (FRONT SEAT OUTER BELT ASSEMBLY RH - SEAT BELT CONTROL ECU) Disconnect the negative (-) battery terminal. WARNING: Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system. Disconnect the P8 connector of the front seat outer belt assembly RH. Disconnect the Q58 connector of the seat belt control ECU. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Condition Specified Condition P8-1 - Body ground Always 1 Mohms or higher P8-2 - Body ground Always 1 Mohms or higher P8-1 - P8-2 Always 1 Mohms or higher Reconnect the Q58 connector of the seat belt control ECU and P8 connector of the front seat outer belt assembly RH. Connect the negative (-) battery terminal. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (FRONT SEAT OUTER BELT ASSEMBLY RH - SEAT BELT CONTROL ECU) OK --> See step 3
  3. REPLACE SEAT BELT CONTROL ECU. Refer to «REMOVAL»(ref-387199-S23033253832011022400000)
  4. REPLACE FRONT SEAT OUTER BELT ASSEMBLY RH. Refer to «REMOVAL»(ref-387199-S03101934742011022400000)
  1. INSPECT FRONT SEAT OUTER BELT ASSEMBLY LH Disconnect the Q13 connector of the front seat outer belt assembly LH. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Condition Specified Condition Q13-1 - Body ground Always 1 Mohms or higher Q13-2 - Body ground Always 1 Mohms or higher Reconnect the Q13 connector of the front seat outer belt assembly LH. NG --> See step 4 OK: Go to next step
  2. CHECK HARNESS AND CONNECTOR (FRONT SEAT OUTER BELT ASSEMBLY LH - SEAT BELT CONTROL ECU) Disconnect the negative (-) battery terminal. WARNING: Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system. Disconnect the Q13 connector of the front seat outer belt assembly LH. Disconnect the Q58 connector of the seat belt control ECU. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Condition Specified Condition Q13-1 - Body ground Always 1 Mohms or higher Q13-2 - Body ground Always 1 Mohms or higher Q13-1 - Q13-2 Always 1 Mohms or higher Reconnect the Q13 connector of the front seat outer belt assembly LH and Q58 connector of the seat belt control ECU. Connect the negative (-) battery terminal. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (FRONT SEAT OUTER BELT ASSEMBLY LH - SEAT BELT CONTROL ECU) OK --> See step 3
  3. REPLACE SEAT BELT CONTROL ECU. Refer to «REMOVAL»(ref-387199-S23033253832011022400000)
  4. REPLACE FRONT SEAT OUTER BELT ASSEMBLY LH. Refer to «REMOVAL»(ref-387199-S03101934742011022400000)
  1. CHECK DTC OUTPUT Turn the engine switch on (IG). Clear the DTCs stored in memory. Refer to «DTC CHECK / CLEAR»(ref-387434-S30010391652011022400000) . Turn the engine switch off. Turn the engine switch on (IG). Check for DTCs. Refer to «DTC CHECK / CLEAR»(ref-387434-S30010391652011022400000) . OK No DTC is output. NG --> See step 3 OK --> See step 2
  2. USE SIMULATION METHOD TO CHECK. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-387197-S20875652652011022400000)
  3. REPLACE SEAT BELT CONTROL ECU. Refer to «REMOVAL»(ref-387199-S23033253832011022400000)
  1. CHECK DTC OUTPUT (CAN COMMUNICATION SYSTEM) Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-387434-S30010391652011022400000) . Recheck for DTCs. OK CAN communication system DTC is not output. NG --> See step 4 OK: Go to next step
  2. CHECK DTC OUTPUT (DYNAMIC RADAR CRUISE CONTROL SYSTEM) Turn the cruise control main switch on. Drive the vehicle at a speed of 25 mph (40 km/h) or more. Check DTC for dynamic radar cruise control system. Refer to «DTC CHECK / CLEAR»(ref-387436-S38461501962011022400000) . OK DTC P1570 is not output. NG --> See step 5 OK: Go to next step
  3. CHECK DTC OUTPUT (PRE-COLLISION SYSTEM) Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-387434-S30010391652011022400000) . Recheck for DTCs. OK DTC B2055 is not output. NG --> See step 6 OK --> See step 7
  4. GO TO CAN COMMUNICATION SYSTEM. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-387391-S01390035312011022400000)
  5. GO TO DYNAMIC RADAR CRUISE CONTROL SYSTEM. Refer to «DTC P1570: Radar Sensor Malfunction»(ref-387437-S35750602482011022400000)
  6. REPLACE SEAT BELT CONTROL ECU. Refer to «REMOVAL»(ref-387199-S23033253832011022400000)
  7. USE SIMULATION METHOD TO CHECK. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-387197-S20875652652011022400000)
  1. CHECK DTC OUTPUT (CAN COMMUNICATION SYSTEM) Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-387434-S30010391652011022400000) . Recheck for DTCs. OK CAN communication system DTC is not output. NG --> See step 4 OK: Go to next step
  2. CHECK DTC OUTPUT (DYNAMIC RADAR CRUISE CONTROL SYSTEM) Turn the cruise control main switch on. Drive the vehicle at a speed of 25 mph (40 km/h) or more. Check DTC for dynamic radar cruise control system. Refer to «DTC CHECK / CLEAR»(ref-387436-S38461501962011022400000) . OK DTC P1572 is not output. NG --> See step 5 OK: Go to next step
  3. CHECK DTC OUTPUT (PRE-COLLISION SYSTEM) Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-387434-S30010391652011022400000) . Recheck for DTCs. OK DTC B2056 is not output. NG --> See step 6 OK --> See step 7
  4. GO TO CAN COMMUNICATION SYSTEM. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-387391-S01390035312011022400000)
  5. GO TO DYNAMIC RADAR CRUISE CONTROL SYSTEM. Refer to «DTC P1572: Improper Aiming of Radar Sensor Beam Axis»(ref-387437-S29462572832011022400000)
  6. REPLACE SEAT BELT CONTROL ECU. Refer to «REMOVAL»(ref-387199-S23033253832011022400000)
  7. USE SIMULATION METHOD TO CHECK. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-387197-S20875652652011022400000)
  1. CHECK DTC OUTPUT (CAN COMMUNICATION SYSTEM) Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-387434-S30010391652011022400000) . Recheck for DTCs. OK CAN communication system DTC is not output. NG --> See step 7 OK: Go to next step
  2. CHECK DTC OUTPUT (VEHICLE STABILITY CONTROL SYSTEM) Turn the engine switch off. Start the engine. Drive the vehicle at a speed of 18 mph (30 km/h) or more, turn the steering wheel, and decelerate the vehicle (depress the brake pedal). Check DTC for vehicle stability control system. Refer to «DTC CHECK / CLEAR»(ref-387412-S28162937332011022400000) . OK Vehicle stability control system DTC is not output. NG --> See step 5 OK: Go to next step
  3. CHECK DTC OUTPUT (PRE-COLLISION SYSTEM) Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-387434-S30010391652011022400000) . Recheck for DTCs. OK DTC B2057 is not output. NG --> See step 6 OK --> See step 4
  4. USE SIMULATION METHOD TO CHECK. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-387197-S20875652652011022400000)
  5. GO TO VEHICLE STABILITY CONTROL SYSTEM. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-387412-S40536036342011022400000)
  6. REPLACE SEAT BELT CONTROL ECU. Refer to «REMOVAL»(ref-387199-S23033253832011022400000)
  7. GO TO CAN COMMUNICATION SYSTEM. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-387391-S01390035312011022400000)
  1. CHECK DTC OUTPUT (CAN COMMUNICATION SYSTEM) Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-387434-S30010391652011022400000) . Recheck for DTCs. OK CAN communication system DTC is not output. NG --> See step 6 OK: Go to next step
  2. CHECK DTC OUTPUT (VEHICLE STABILITY CONTROL SYSTEM) Turn the engine switch off. Turn the engine switch on (IG) again. Drive the vehicle and turn the steering wheel to the right and left at a speed of 22 mph (35 km/h) or more. Check DTC for vehicle stability control system. Refer to «DTC CHECK / CLEAR»(ref-387412-S28162937332011022400000) . OK Vehicle stability control system DTC is not output. NG --> See step 7 OK: Go to next step
  3. CHECK DTC OUTPUT (PRE-COLLISION SYSTEM) Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-387434-S30010391652011022400000) . Recheck for DTCs. OK DTC B2058 is not output. NG --> See step 5 OK --> See step 4
  4. USE SIMULATION METHOD TO CHECK. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-387197-S20875652652011022400000)
  5. REPLACE SEAT BELT CONTROL ECU. Refer to «REMOVAL»(ref-387199-S23033253832011022400000)
  6. GO TO CAN COMMUNICATION SYSTEM. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-387391-S01390035312011022400000)
  7. GO TO VEHICLE STABILITY CONTROL SYSTEM. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-387412-S40536036342011022400000)
  1. CHECK DTC OUTPUT (CAN COMMUNICATION SYSTEM) Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-387434-S30010391652011022400000) . Recheck for DTCs. OK CAN communication system DTC is not output. NG --> See step 11 OK: Go to next step
  2. CHECK DTC OUTPUT (DYNAMIC RADAR CRUISE CONTROL SYSTEM) Check DTC for dynamic radar cruise control system. Refer to «DTC CHECK / CLEAR»(ref-387436-S38461501962011022400000) . OK DTC P0500 is not output. NG --> See step 9 OK: Go to next step
  3. CHECK DTC OUTPUT (VEHICLE STABILITY CONTROL SYSTEM) Turn the engine switch off. Start the engine. Drive the vehicle at a speed of 18 mph (30 km/h) or more for at least 60 seconds. Check DTC for vehicle stability control system. Refer to «DTC CHECK / CLEAR»(ref-387412-S28162937332011022400000) . OK Vehicle stability control system DTC is not output. NG --> See step 10 OK: Go to next step
  4. READ VALUE USING TECHSTREAM Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Body Electrical / Combination Meter / Data List. Check the Data List for proper functioning of the vehicle speed meter. Combination Meter Tester Display Test Part Control Range Diagnostic Note Vehicle Speed Meter Vehicle speed/Min: 0 km/h (0 mph), Max: 255 km/h (158 mph) Almost same as actual vehicle speed (When driving) - OK Vehicle speed displayed on the Techstream is almost the same as the actual vehicle speed. NG --> See step 8 OK: Go to next step
  5. REPLACE DISTANCE CONTROL ECU ASSEMBLY Replace the distance control ECU assembly. Refer to «REMOVAL»(ref-387354-S04804840852011022400000) . Initialize the distance control ECU. Refer to «INSTALLATION - Step 4»(ref-387354-S02713818932011022400000) . NEXT: Go to next step
  6. CHECK DTC OUTPUT (PRE-COLLISION SYSTEM) Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-387434-S30010391652011022400000) . Recheck for DTCs. OK DTC B2059 is not output. NG --> See step 7 OK --> END
  7. REPLACE SEAT BELT CONTROL ECU. Refer to «REMOVAL»(ref-387199-S23033253832011022400000)
  8. GO TO COMBINATION METER SYSTEM. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-387413-S41361652992011022400000)
  9. GO TO DYNAMIC RADAR CRUISE CONTROL SYSTEM. Refer to «DTC P0500: Vehicle Speed Sensor Malfunction; DTC P0503: Vehicle Speed Sensor "A" Intermittent / Erratic / High»(ref-387437-S40901150512011022400000)
  10. GO TO VEHICLE STABILITY CONTROL SYSTEM. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-387412-S40536036342011022400000)
  11. GO TO CAN COMMUNICATION SYSTEM. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-387391-S01390035312011022400000)
  1. CHECK DTC OUTPUT (CAN COMMUNICATION SYSTEM) Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-387434-S30010391652011022400000) . Recheck for DTCs. OK CAN communication system DTC is not output. NG --> See step 6 OK: Go to next step
  2. CHECK DTC OUTPUT (VEHICLE STABILITY CONTROL SYSTEM) Check DTC for vehicle stability control system. Refer to «DTC CHECK / CLEAR»(ref-387412-S28162937332011022400000) . OK DTC is not output. NG --> See step 4 OK: Go to next step
  3. CHECK DTC OUTPUT (PRE-COLLISION SYSTEM) Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-387434-S30010391652011022400000) . Recheck for DTCs. 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-387412-S40536036342011022400000)
  5. REPLACE SEAT BELT CONTROL ECU. Refer to «REMOVAL»(ref-387199-S23033253832011022400000)
  6. GO TO CAN COMMUNICATION SYSTEM. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-387391-S01390035312011022400000)
  7. USE SIMULATION METHOD TO CHECK. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-387197-S20875652652011022400000)
  1. CHECK DTC OUTPUT (CAN COMMUNICATION SYSTEM) Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-387434-S30010391652011022400000) . Recheck for DTCs. OK CAN communication system DTC is not output. NG --> See step 6 OK: Go to next step
  2. CHECK DTC OUTPUT (AIRBAG SYSTEM) Turn the engine switch off. Turn the engine switch on (IG), and wait at least 60 seconds. Check DTC for airbag system. Refer to «DTC CHECK / CLEAR»(ref-387382-S36962992552011022400000) . OK DTC B1650 or B1655 is not output. NG --> See step 7 OK: Go to next step
  3. CHECK DTC OUTPUT (OCCUPANT CLASSIFICATION SYSTEM) Turn the engine switch off. Turn the engine switch on (IG). Check DTC for occupant classification system. Refer to «DTC CHECK / CLEAR»(ref-387438-S37030530952011022400000) . OK DTC B1771 is not output. NG --> See step 8 OK: Go to next step
  4. CHECK DTC OUTPUT (PRE-COLLISION SYSTEM) HINT: Before clearing the DTC B2063, first clear the DTCs of the occupant detection ECU, then clear the DTCs of the center airbag sensor assembly. Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-387434-S30010391652011022400000) . Recheck for DTCs. OK DTC B2063 is not output. NG --> See step 9 OK --> See step 5
  5. CHECK FOR INTERMITTENT PROBLEMS (SYMPTOM SIMULATION). Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-387197-S20875652652011022400000)
  6. GO TO CAN COMMUNICATION SYSTEM. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-387391-S01390035312011022400000)
  7. GO TO AIRBAG SYSTEM (B1650, B1655). Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-387382-S19759108612011022400000)
  8. GO TO OCCUPANT CLASSIFICATION SYSTEM (B1771). Refer to «DTC B1771: Passenger Side Buckle Switch Circuit Malfunction»(ref-387439-S02597545342011022400000)
  9. REPLACE SEAT BELT CONTROL ECU. Refer to «REMOVAL»(ref-387199-S23033253832011022400000)
  1. INITIALIZE SEAT BELT CONTROL ECU Initialize the seat belt control ECU. Refer to «INITIALIZATION»(ref-387434-S42110388422011022400000) . NEXT: Go to next step
  2. CHECK DTC OUTPUT (PRE-COLLISION SYSTEM) Delete the DTCs. Refer to «DTC CHECK / CLEAR»(ref-387434-S30010391652011022400000) . Recheck for DTCs. OK DTC B2064 is not output. NG --> See step 3 OK --> See step 6
  3. REPLACE GATEWAY ECU Replace the gateway ECU. NEXT: Go to next step
  4. CHECK DTC OUTPUT (PRE-COLLISION SYSTEM) Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-387434-S30010391652011022400000) . Recheck for DTCs. OK DTC B2064 is not output. NG --> See step 5 OK --> END
  5. REPLACE SEAT BELT CONTROL ECU. Refer to «REMOVAL»(ref-387199-S23033253832011022400000)
  6. USE SIMULATION METHOD TO CHECK. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-387197-S20875652652011022400000)
  1. CHECK DTC OUTPUT (DYNAMIC RADAR CRUISE CONTROL SYSTEM) Turn the cruise control main switch on. Drive the vehicle at a speed of 25 mph (40 km/h) or more. Check DTC for dynamic radar cruise control system. Refer to «DTC CHECK / CLEAR»(ref-387436-S38461501962011022400000) . OK DTC P1617 is not output. NG --> See step 4 OK: Go to next step
  2. CHECK DTC OUTPUT (PRE-COLLISION SYSTEM) Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-387434-S30010391652011022400000) . Recheck for DTCs. 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-387197-S20875652652011022400000)
  4. GO TO DYNAMIC RADAR CRUISE CONTROL SYSTEM. Refer to «DTC P1617: Distance Control ECU Malfunction»(ref-387437-S01765692182011022400000)
  5. REPLACE SEAT BELT CONTROL ECU. Refer to «REMOVAL»(ref-387199-S23033253832011022400000)

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