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Pre-Collision System (Diagnostic Codes & Circuit Tests): Other Lexus ES XV60

Airbag ~4170 words

PROCEDURE

  1. INSPECT FRONT SEAT OUTER BELT ASSEMBLY RH Disconnect the Q21 front seat outer belt assembly RH connector. HINT: Do not remove 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 Q21-1 - Body ground Always 1 Mohms or higher Q21-2 - Body ground Always 1 Mohms or higher TEXT IN ILLUSTRATION *a Component without harness connected (Front Seat Outer Belt Assembly RH) WARNING: Do not check the wrong connector. 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 H77 seat belt control ECU connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition H77-1 (MOR-) - Body ground Always 1 Mohms or higher H77-2 (MOR+) - Body ground Always 1 Mohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 3
  3. REPLACE SEAT BELT CONTROL ECU. Refer to «COMPONENTS [06/2012 - ]»(ref-598697-S36213278972014021400000)
  4. REPLACE FRONT SEAT OUTER BELT ASSEMBLY RH. Refer to «COMPONENTS [06/2012 - ]»(ref-598452-S27229546352014021400000)
  1. INSPECT FRONT SEAT OUTER BELT ASSEMBLY RH Disconnect the Q21 front seat outer belt assembly RH connector. HINT: Do not remove 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 Q21-1 - Q21-2 Always Below 20 ohms TEXT IN ILLUSTRATION *a Component without harness connected (Front Seat Outer Belt Assembly RH) WARNING: Do not check the wrong connector. 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 Q21 front seat outer belt assembly RH connector. Disconnect the H77 seat belt control ECU connector. Using a service wire, connect terminals 1 and 2 of the connector on the front seat outer belt assembly RH. NOTE: Do not forcibly insert the service wire into the terminals of the connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition H77-1 (MOR-) - H77-2 (MOR+) Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 3
  3. REPLACE SEAT BELT CONTROL ECU. Refer to «COMPONENTS [06/2012 - ]»(ref-598697-S36213278972014021400000)
  4. REPLACE FRONT SEAT OUTER BELT ASSEMBLY RH. Refer to «COMPONENTS [06/2012 - ]»(ref-598452-S27229546352014021400000)
  1. INSPECT FRONT SEAT OUTER BELT ASSEMBLY LH Disconnect the P21 front seat outer belt assembly LH connector. HINT: Do not remove 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 P21-1 - Body ground Always 1 Mohms or higher P21-2 - Body ground Always 1 Mohms or higher TEXT IN ILLUSTRATION *a Component without harness connected (Front Seat Outer Belt Assembly LH) WARNING: Do not check the wrong connector. 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 H77 seat belt control ECU connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition H77-3 (MOL+) - Body ground Always 1 Mohms or higher H77-4 (MOL-) - Body ground Always 1 Mohms or higher 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 «COMPONENTS [06/2012 - ]»(ref-598697-S36213278972014021400000)
  4. REPLACE FRONT SEAT OUTER BELT ASSEMBLY LH. Refer to «COMPONENTS [06/2012 - ]»(ref-598452-S27229546352014021400000)
  1. INSPECT FRONT SEAT OUTER BELT ASSEMBLY LH Disconnect the P21 front seat outer belt assembly LH connector. HINT: Do not remove 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 P21-1 - P21-2 Always Below 20 ohms TEXT IN ILLUSTRATION *a Component without harness connected (Front Seat Outer Belt Assembly LH) WARNING: Do not check the wrong connector. 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 P21 front seat outer belt assembly LH connector. Disconnect the H77 seat belt control ECU connector. Using a service wire, connect terminals 1 and 2 of the connector on the front seat outer belt assembly LH. NOTE: Do not forcibly insert the service wire into the terminals of the connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition H77-3 (MOL+) - H77-4 (MOL-) Always Below 1 ohms 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 «COMPONENTS [06/2012 - ]»(ref-598697-S36213278972014021400000)
  4. REPLACE FRONT SEAT OUTER BELT ASSEMBLY LH. Refer to «COMPONENTS [06/2012 - ]»(ref-598452-S27229546352014021400000)
  1. CHECK DTC OUTPUT Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Body Electrical / Pre-Collision / Trouble Codes. Clear the DTCs. Refer to «DTC CHECK / CLEAR [06/2012 - ]»(ref-598707-S17571527892014021400000) . Turn the engine switch off. Turn the engine switch on (IG). Recheck for DTCs. OK DTCs are not output. NG --> See step 3 OK --> See step 2
  2. CHECK FOR INTERMITTENT PROBLEMS (SYMPTOM SIMULATION). Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [06/2012 - ]»(ref-598449-S34618498472014021400000)
  3. REPLACE SEAT BELT CONTROL ECU. Refer to «COMPONENTS [06/2012 - ]»(ref-598697-S36213278972014021400000)
  1. INSPECT SEAT BELT CONTROL ECU (+B TERMINAL VOLTAGE) Disconnect the H77 seat belt control ECU connector. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition H77-7 (+B) - Body ground Engine switch off 11 to 14 V TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Seat Belt Control ECU) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (+B CIRCUIT) OK --> See step 2
  2. REPLACE SEAT BELT CONTROL ECU. Refer to «COMPONENTS [06/2012 - ]»(ref-598697-S36213278972014021400000)
  1. CHECK DTC OUTPUT (CAN COMMUNICATION SYSTEM) Clear the DTCs. Refer to «DIAGNOSIS SYSTEM [06/2012 - ]»(ref-598642-S28836115522014021400000) . Recheck for DTCs. OK CAN communication system DTCs are not output. NG --> See step 6 OK: Go to next step
  2. CHECK DTC OUTPUT (VSC SYSTEM) Check for VSC system DTCs. Refer to «DTC CHECK / CLEAR [06/2012 - ]»(ref-598453-S11665911462014021400000) . OK VSC system DTCs are not output. NG --> See step 4 OK: Go to next step
  3. CHECK DTC OUTPUT (PRE-COLLISION SYSTEM) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Body Electrical / Pre-Collision / Trouble Codes. Clear the DTCs. Refer to «DTC CHECK / CLEAR [06/2012 - ]»(ref-598707-S17571527892014021400000) . Drive the vehicle. Recheck for DTCs. OK DTC B2060 is not output. NG --> See step 5 OK --> See step 7
  4. GO TO VSC SYSTEM. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [06/2012 - ]»(ref-598453-S37749010122014021400000)
  5. REPLACE SEAT BELT CONTROL ECU. Refer to «COMPONENTS [06/2012 - ]»(ref-598697-S36213278972014021400000)
  6. GO TO CAN COMMUNICATION SYSTEM. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [06/2012 - ]»(ref-598635-S10414945732014021400000)
  7. CHECK FOR INTERMITTENT PROBLEMS (SYMPTOM SIMULATION). Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [06/2012 - ]»(ref-598449-S34618498472014021400000)
  1. CHECK DTC OUTPUT (CAN COMMUNICATION SYSTEM) Clear the DTCs. Refer to «DIAGNOSIS SYSTEM [06/2012 - ]»(ref-598642-S28836115522014021400000) . Recheck for DTCs. OK CAN communication system DTCs are not output. NG --> See step 7 OK: Go to next step
  2. CHECK DTC OUTPUT (PRE-COLLISION SYSTEM) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Body Electrical / Pre-Collision / Trouble Codes. Clear the DTCs. Refer to «DTC CHECK / CLEAR [06/2012 - ]»(ref-598707-S17571527892014021400000) . Recheck for DTCs. OK DTC B2064 is not output. NG --> See step 3 OK --> See step 6
  3. REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) Replace the main body ECU (multiplex network body ECU). Refer to «COMPONENTS [06/2012 - ]»(ref-598640-S14439059362014021400000) . NEXT: Go to next step
  4. CHECK DTC OUTPUT (PRE-COLLISION SYSTEM) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Body Electrical / Pre-Collision / Trouble Codes. Clear the DTCs. Refer to «DTC CHECK / CLEAR [06/2012 - ]»(ref-598707-S17571527892014021400000) . Recheck for DTCs. OK DTC B2064 is not output. NG --> See step 5 OK --> END (MAIN BODY ECU WAS DEFECTIVE)
  5. REPLACE SEAT BELT CONTROL ECU. Refer to «COMPONENTS [06/2012 - ]»(ref-598697-S36213278972014021400000)
  6. CHECK FOR INTERMITTENT PROBLEMS (SYMPTOM SIMULATION). Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [06/2012 - ]»(ref-598449-S34618498472014021400000)
  7. GO TO CAN COMMUNICATION SYSTEM. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [06/2012 - ]»(ref-598635-S10414945732014021400000)
  1. CHECK DTC OUTPUT (CAN COMMUNICATION SYSTEM) Clear the DTCs. Refer to «DIAGNOSIS SYSTEM [06/2012 - ]»(ref-598642-S28836115522014021400000) . Recheck for DTCs. OK CAN communication system DTCs are not output. NG --> See step 5 OK: Go to next step
  2. CHECK DTC OUTPUT (AIRBAG SYSTEM) Check for airbag system DTCs. Refer to «DTC CHECK / CLEAR [06/2012 - ]»(ref-598650-S20074771912014021400000) . OK Airbag system DTCs are not output. NG --> See step 6 OK: Go to next step
  3. CHECK DTC OUTPUT (OCCUPANT CLASSIFICATION SYSTEM) Check for occupant classification system DTCs. Refer to «DTC CHECK / CLEAR [06/2012 - ]»(ref-598481-S06219441952014021400000) . OK Occupant classification system DTCs are not output. NG --> See step 9 OK: Go to next step
  4. CHECK DTC OUTPUT (PRE-COLLISION SYSTEM) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Enter the following menus: Body Electrical / Pre-Collision / Trouble Codes. Clear the DTCs. Refer to «DTC CHECK / CLEAR [06/2012 - ]»(ref-598707-S17571527892014021400000) . Recheck for DTCs. OK DTC B2074 or B2075 is not output. NG --> See step 7 OK --> See step 8
  5. GO TO CAN COMMUNICATION SYSTEM. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [06/2012 - ]»(ref-598635-S10414945732014021400000)
  6. GO TO AIRBAG SYSTEM. Refer to «DIAGNOSTIC TROUBLE CODE CHART [06/2012 - ]»(ref-598650-S21031100462014021400000)
  7. REPLACE SEAT BELT CONTROL ECU. Refer to «COMPONENTS [06/2012 - ]»(ref-598697-S36213278972014021400000)
  8. CHECK FOR INTERMITTENT PROBLEMS (SYMPTOM SIMULATION). Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [06/2012 - ]»(ref-598449-S34618498472014021400000)
  9. GO TO OCCUPANT CLASSIFICATION SYSTEM. Refer to «DIAGNOSTIC TROUBLE CODE CHART [06/2012 - ]»(ref-598481-S11187031242014021400000)
  1. CHECK DTC OUTPUT (CAN COMMUNICATION SYSTEM) Clear the DTCs. Refer to «DIAGNOSIS SYSTEM [06/2012 - ]»(ref-598642-S28836115522014021400000) . Check for DTCs. OK CAN communication system DTCs are not output. NG --> See step 4 OK: Go to next step
  2. CHECK DTC OUTPUT (PRE-COLLISION SYSTEM) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Body Electrical / Pre-Collision / Trouble Codes. Clear the DTCs. Refer to «DTC CHECK / CLEAR [06/2012 - ]»(ref-598707-S17571527892014021400000) . Recheck for DTCs. OK DTC B2085 is not output. NG --> See step 5 OK --> See step 3
  3. CHECK FOR INTERMITTENT PROBLEMS (SYMPTOMS SIMULATION). Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [06/2012 - ]»(ref-598449-S34618498472014021400000)
  4. GO TO CAN COMMUNICATION SYSTEM. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [06/2012 - ]»(ref-598635-S10414945732014021400000)
  5. REPLACE SEAT BELT CONTROL ECU. Refer to «COMPONENTS [06/2012 - ]»(ref-598697-S36213278972014021400000)
  1. CHECK DTC OUTPUT (DYNAMIC RADAR CRUISE CONTROL SYSTEM) Check for dynamic radar cruise control system DTCs. Refer to «DTC CHECK / CLEAR [06/2012 - ]»(ref-598637-S25256343292014021400000) . OK Dynamic radar cruise control system DTCs are not output. NG --> See step 4 OK: Go to next step
  2. CHECK DTC OUTPUT (DRIVING SUPPORT ECU ASSEMBLY (PRE-COLLISION 2)) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Body Electrical / Pre-Collision 2 / Trouble Codes. Check for DTCs. Refer to «DTC CHECK / CLEAR [06/2012 - ]»(ref-598707-S17571527892014021400000) . OK "Pre-Collision 2" DTCs are not output. NG --> See step 5 OK: Go to next step
  3. CHECK DTC OUTPUT (PRE-COLLISION SYSTEM) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Body Electrical / Pre-Collision / Trouble Codes. Clear the DTCs. Refer to «DTC CHECK / CLEAR [06/2012 - ]»(ref-598707-S17571527892014021400000) . Recheck for DTCs. OK DTC B2090 is not output. NG --> See step 6 OK --> END
  4. GO TO DYNAMIC RADAR CRUISE CONTROL SYSTEM. Refer to «DIAGNOSTIC TROUBLE CODE CHART [06/2012 - ]»(ref-598637-S20484929592014021400000)
  5. GO TO DIAGNOSTIC TROUBLE CODE CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART [06/2012 - ]»(ref-598707-S05515626262014021400000)
  6. REPLACE SEAT BELT CONTROL ECU. Refer to «COMPONENTS [06/2012 - ]»(ref-598697-S36213278972014021400000)
  1. CHECK DTC OUTPUT (PRE-COLLISION SYSTEM) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Body Electrical / Pre-Collision 2 / Trouble Codes. Clear the DTCs. Refer to «DTC CHECK / CLEAR [06/2012 - ]»(ref-598707-S17571527892014021400000) . Recheck for DTCs. OK DTC C1A01 is not output. NG --> See step 2 OK --> See step 3
  2. REPLACE DRIVING SUPPORT ECU ASSEMBLY. Refer to «COMPONENTS [06/2012 - ]»(ref-598474-S00377100682014021400000)
  3. CHECK FOR INTERMITTENT PROBLEMS (SYMPTOM SIMULATION). Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [06/2012 - ]»(ref-598449-S34618498472014021400000)
  1. CHECK DTC OUTPUT (CAN COMMUNICATION SYSTEM) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Body Electrical / Pre-Collision 2 / Trouble Codes. Clear the DTCs. Refer to «DTC CHECK / CLEAR [06/2012 - ]»(ref-598707-S17571527892014021400000) . Recheck for DTCs. OK CAN communication system DTCs are not output. NG --> See step 3 OK --> See step 2
  2. REPLACE DRIVING SUPPORT ECU ASSEMBLY. Refer to «COMPONENTS [06/2012 - ]»(ref-598474-S00377100682014021400000)
  3. GO TO CAN COMMUNICATION SYSTEM. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [06/2012 - ]»(ref-598635-S10414945732014021400000)
  1. CHECK MILLIMETER WAVE RADAR SENSOR ASSEMBLY Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Radar Cruise / Data List. RADAR CRUISE Tester Display Measurement Item/Range Normal Condition Diagnostic Note Country# (F Radar Sens) Millimeter wave radar sensor assembly country signal/JPN, NA, EURO, AUS, SAFC, OTHER, TWN, CHINA, THAI, GCC or NOFIX Actual country code - Read the Data List and check the country specification information of the millimeter wave radar sensor assembly and vehicle. RESULT Result Proceed to Country specification information for vehicle and millimeter wave radar sensor assembly match A Country specification information for vehicle and millimeter wave radar sensor assembly do not match B B --> See step 4 A: Go to next step
  2. REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) Replace the main body ECU (multiplex network body ECU). Refer to «REMOVAL [06/2012 - ]»(ref-598640-S21213941222014021400000) . NEXT: Go to next step
  3. CHECK DTC OUTPUT (PRE-COLLISION SYSTEM) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Body Electrical / Pre-Collision 2 / Trouble Codes. Clear the DTCs. Refer to «DTC CHECK / CLEAR [06/2012 - ]»(ref-598707-S17571527892014021400000) . Recheck for DTCs. OK DTC C1A0A is not output. NG --> See step 5 OK --> END (MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) WAS DEFECTIVE)
  4. REPLACE MILLIMETER WAVE RADAR SENSOR ASSEMBLY. Refer to «COMPONENTS [06/2012 - ]»(ref-598474-S34402928122014021400000)
  5. REPLACE DRIVING SUPPORT ECU ASSEMBLY. Refer to «COMPONENTS [06/2012 - ]»(ref-598474-S00377100682014021400000)
  1. REPLACE MILLIMETER WAVE RADAR SENSOR ASSEMBLY Replace the millimeter wave radar sensor assembly. Refer to «COMPONENTS [06/2012 - ]»(ref-598474-S34402928122014021400000) . NEXT: Go to next step
  2. ADJUST MILLIMETER WAVE RADAR SENSOR ASSEMBLY Adjust the millimeter wave radar sensor assembly. Refer to «ADJUSTMENT [06/2012 - ]»(ref-598474-S22496836162014021400000) . NEXT: Go to next step
  3. CHECK DTC OUTPUT (PRE-COLLISION SYSTEM) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Body Electrical / Pre-Collision 2 / Trouble Codes. Clear the DTCs. Refer to «DTC CHECK / CLEAR [06/2012 - ]»(ref-598707-S17571527892014021400000) . Recheck for DTCs. OK DTC C1A10 is not output. NG --> See step 4 OK --> END (MILLIMETER WAVE RADAR SENSOR ASSEMBLY WAS DEFECTIVE)
  4. REPLACE DRIVING SUPPORT ECU ASSEMBLY. Refer to «COMPONENTS [06/2012 - ]»(ref-598474-S00377100682014021400000)
  1. ADJUST MILLIMETER WAVE RADAR SENSOR Check the millimeter wave radar sensor assembly installation. Refer to «INSTALLATION [06/2012 - ]»(ref-598474-S27365442222014021400000) . Adjust the millimeter wave radar sensor assembly. Refer to «ADJUSTMENT [06/2012 - ]»(ref-598474-S22496836162014021400000) . NEXT: Go to next step
  2. CHECK DTC OUTPUT (PRE-COLLISION SYSTEM) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Body Electrical / Pre-Collision 2 / Trouble Codes. Clear the DTCs. Refer to «DTC CHECK / CLEAR [06/2012 - ]»(ref-598707-S17571527892014021400000) . Drive the vehicle and attempt to reproduce the conditions present when the DTC was detected. Recheck for DTCs. OK DTC C1A11 or C1A14 is not output. HINT: After performing the radar sensor beam axis adjustment, if the same DTC is output again after the DTC detection conditions are met, replace the driving support ECU assembly. NG --> See step 3 OK --> END
  3. REPLACE DRIVING SUPPORT ECU ASSEMBLY. Refer to «COMPONENTS [06/2012 - ]»(ref-598474-S00377100682014021400000)
  1. CHECK DTC OUTPUT (VSC SYSTEM) Check for VSC system DTCs. Refer to «DTC CHECK / CLEAR [06/2012 - ]»(ref-598453-S11665911462014021400000) . OK VSC system DTCs are not output. NG --> See step 4 OK: Go to next step
  2. REPLACE BRAKE ACTUATOR ASSEMBLY (SKID CONTROL ECU) Replace the brake actuator assembly (skid control ECU). Refer to «COMPONENTS [06/2012 - ]»(ref-598641-S00469559512014021400000) . NEXT: Go to next step
  3. CHECK DTC OUTPUT (PRE-COLLISION SYSTEM) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Body Electrical / Pre-Collision 2 / Trouble Codes. Clear the DTCs. Refer to «DTC CHECK / CLEAR [06/2012 - ]»(ref-598707-S17571527892014021400000) . Drive the vehicle at a speed of 5 km/h (3 mph) or more. Recheck for DTCs. OK DTC C1A46 is not output. NG --> See step 5 OK --> END (BRAKE ACTUATOR ASSEMBLY (SKID CONTROL ECU) WAS DEFECTIVE)
  4. GO TO VSC SYSTEM. Refer to «DIAGNOSTIC TROUBLE CODE CHART [06/2012 - ]»(ref-598453-S02824470982014021400000)
  5. REPLACE DRIVING SUPPORT ECU ASSEMBLY. Refer to «COMPONENTS [06/2012 - ]»(ref-598474-S00377100682014021400000)
  1. CHECK DTC OUTPUT (VSC SYSTEM) Check for VSC system DTCs. Refer to «DTC CHECK / CLEAR [06/2012 - ]»(ref-598453-S11665911462014021400000) . OK VSC system DTCs are not output. NG --> See step 4 OK: Go to next step
  2. REPLACE BRAKE ACTUATOR ASSEMBLY (SKID CONTROL ECU) Replace the brake actuator assembly (skid control ECU). Refer to «COMPONENTS [06/2012 - ]»(ref-598641-S00469559512014021400000) . NEXT: Go to next step
  3. CHECK DTC OUTPUT (PRE-COLLISION SYSTEM) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Body Electrical / Pre-Collision 2 / Trouble Codes. Clear the DTCs. Refer to «DTC CHECK / CLEAR [06/2012 - ]»(ref-598707-S17571527892014021400000) . Drive the vehicle and attempt to reproduce the conditions present when the DTC was detected. Recheck for DTCs. OK DTC C1A47 is not output. NG --> See step 5 OK --> END (BRAKE ACTUATOR ASSEMBLY (SKID CONTROL ECU) WAS DEFECTIVE)
  4. GO TO VSC SYSTEM. Refer to «DIAGNOSTIC TROUBLE CODE CHART [06/2012 - ]»(ref-598453-S02824470982014021400000)
  5. REPLACE DRIVING SUPPORT ECU ASSEMBLY. Refer to «COMPONENTS [06/2012 - ]»(ref-598474-S00377100682014021400000)
  1. PERFORM ACTIVE TEST USING TECHSTREAM (DSS SIGNAL BUZZER) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Chassis / ABS/VSC/TRAC / Active Test / DSS Signal Buzzer. Check that the skid control buzzer sounds. ABS/VSC/TRAC Tester Display Test Part Control Range Diagnostic Note DSS Signal Buzzer Skid control buzzer ON/OFF - OK Skid control buzzer sounds. NG --> See step 4 OK: Go to next step
  2. REPLACE BRAKE ACTUATOR ASSEMBLY (SKID CONTROL ECU) Replace the brake actuator assembly (skid control ECU). Refer to «COMPONENTS [06/2012 - ]»(ref-598641-S00469559512014021400000) . NEXT: Go to next step
  3. CHECK DTC OUTPUT (PRE-COLLISION SYSTEM) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Body Electrical / Pre-Collision 2 / Trouble Codes. Clear the DTCs. Refer to «DTC CHECK / CLEAR [06/2012 - ]»(ref-598707-S17571527892014021400000) . Recheck for DTCs. OK DTC C1A4A is not output. NG --> See step 5 OK --> END (BRAKE ACTUATOR ASSEMBLY (SKID CONTROL ECU) WAS DEFECTIVE)
  4. GO TO VSC SYSTEM. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [06/2012 - ]»(ref-598453-S37749010122014021400000)
  5. REPLACE DRIVING SUPPORT ECU ASSEMBLY. Refer to «COMPONENTS [06/2012 - ]»(ref-598474-S00377100682014021400000)
  1. CHECK DTC OUTPUT (VSC SYSTEM) Check for VSC system DTCs. Refer to «DTC CHECK / CLEAR [06/2012 - ]»(ref-598453-S11665911462014021400000) . OK VSC system DTCs are not output. NG --> See step 4 OK: Go to next step
  2. REPLACE BRAKE ACTUATOR ASSEMBLY Replace the brake actuator assembly (skid control ECU). Refer to «COMPONENTS [06/2012 - ]»(ref-598641-S00469559512014021400000) . NEXT: Go to next step
  3. CHECK DTC OUTPUT (PRE-COLLISION SYSTEM) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Body Electrical / Pre-Collision 2 / Trouble Codes. Clear the DTCs. Refer to «DTC CHECK / CLEAR [06/2012 - ]»(ref-598707-S17571527892014021400000) . Drive the vehicle. Recheck for DTCs. OK DTC C1A50 is not output. NG --> See step 5 OK --> END (BRAKE ACTUATOR ASSEMBLY (SKID CONTROL ECU) WAS DEFECTIVE)
  4. GO TO VSC SYSTEM. Refer to «DIAGNOSTIC TROUBLE CODE CHART [06/2012 - ]»(ref-598453-S02824470982014021400000)
  5. REPLACE DRIVING SUPPORT ECU ASSEMBLY. Refer to «COMPONENTS [06/2012 - ]»(ref-598474-S00377100682014021400000)
  1. CHECK DTC OUTPUT Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Body Electrical / Pre-Collision and Pre-Collision 2 / Trouble Codes. Check for DTCs. Result Result Proceed to DTC U1104 is output A DTC U1104 is not output B B --> See step 7 A: Go to next step
  2. CHECK CAN COMMUNICATION SYSTEM Select "CAN Bus Check" from the "System Selection Menu" on the Techstream. Select "Communication Malfunction Check" from the "CAN Bus Check" screen, and then select "OK". OK CAN communication is normal. NG --> See step 7 OK: Go to next step
  3. CHECK MILLIMETER WAVE RADAR SENSOR ASSEMBLY (IGB CIRCUIT) Disconnect the A55 millimeter wave radar sensor assembly connector. Turn the engine switch on (IG). Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition A55-5 (IGB) - Body ground Engine switch on (IG) 11 to 14 V TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Millimeter Wave radar sensor assembly) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (IGB CIRCUIT) OK: Go to next step
  4. CHECK HARNESS AND CONNECTOR (MILLIMETER WAVE RADAR SENSOR ASSEMBLY - BODY GROUND) Disconnect the A55 millimeter wave radar sensor assembly connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition A55-2 (SGND) - Body ground Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (SGND CIRCUIT) OK: Go to next step
  5. REPLACE MILLIMETER WAVE RADAR SENSOR ASSEMBLY Replace the millimeter wave radar sensor assembly. Refer to «REMOVAL [06/2012 - ]»(ref-598474-S19115265312014021400000) . Adjust the millimeter wave radar sensor assembly. Refer to «ADJUSTMENT [06/2012 - ]»(ref-598474-S22496836162014021400000) . NEXT: Go to next step
  6. CHECK DTC OUTPUT Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Clear the DTCs. Refer to «DTC CHECK / CLEAR [06/2012 - ]»(ref-598707-S17571527892014021400000) . Turn the cruise control main switch on. Drive the vehicle at the required speed (45 km/h (28 mph) or higher). Check if the same DTC is output. Refer to «DTC CHECK / CLEAR [06/2012 - ]»(ref-598707-S17571527892014021400000) . Result Result Proceed to DTC U1104 is not output A DTC U1104 is output B B --> See step 8 A --> END (MILLIMETER WAVE RADAR SENSOR ASSEMBLY WAS DEFECTIVE)
  7. GO TO CAN COMMUNICATION SYSTEM. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [06/2012 - ]»(ref-598635-S10414945732014021400000)
  8. REPLACE DRIVING SUPPORT ECU ASSEMBLY. Refer to «COMPONENTS [06/2012 - ]»(ref-598474-S00377100682014021400000)
  1. INSPECT PRE-COLLISION SYSTEM CANCEL SWITCH ASSEMBLY Remove the pre-collision system cancel switch assembly. Refer to «REMOVAL [06/2012 - ]»(ref-598712-S09613930582014021400000) . Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 1 - 2 Pressed Below 1 ohms Not pressed 10 kohms or higher TEXT IN ILLUSTRATION *a Component without harness connected (Pre-collision system cancel switch assembly) NG --> See step 4 OK: Go to next step
  2. CHECK HARNESS AND CONNECTOR (PRE-COLLISION SYSTEM CANCEL SWITCH ASSEMBLY - DRIVING SUPPORT ECU ASSEMBLY) Disconnect the K1 pre-collision system cancel switch assembly connector. Disconnect the H75 driving support ECU assembly connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition K1-1 - H75-5 (PBSW) Always Below 1 ohms K1-1 or H75-5 (PBSW) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  3. CHECK HARNESS AND CONNECTOR (PRE-COLLISION SYSTEM CANCEL SWITCH ASSEMBLY - BODY GROUND) Disconnect the K1 pre-collision system cancel switch assembly connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition K1-2 - Body ground Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 5
  4. REPLACE PRE-COLLISION SYSTEM CANCEL SWITCH ASSEMBLY. Refer to «COMPONENTS [06/2012 - ]»(ref-598712-S29837613142014021400000)
  5. REPLACE DRIVING SUPPORT ECU ASSEMBLY. Refer to «COMPONENTS [06/2012 - ]»(ref-598474-S00377100682014021400000)

More articles — Pre-Collision System (Diagnostic Codes & Circuit Tests)