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Pre-Collision System (Diagnostic Codes & Circuit Tests): Other Lexus GS IV

Airbag ~5618 words

PROCEDURE

  1. CHECK FRONT SEAT OUTER BELT ASSEMBLY Disconnect the front seat outer belt assembly RH or front seat outer belt assembly LH connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 1 - Body ground Always 1 Mohms or higher 2 - Body ground Always 1 Mohms or higher TEXT IN ILLUSTRATION *a Component without harness connected (Front Seat Outer Belt Assembly) RESULT Result Proceed to NG A OK (B2001 is output) B OK (B2006 is output) C B --> See step 4 C --> See step 5 A: Go to next step
  2. CHECK HARNESS AND CONNECTOR (FRONT SEAT OUTER BELT ASSEMBLY - SEAT BELT CONTROL ECU) Disconnect the front seat outer belt assembly LH*1 and front seat outer belt assembly RH*2 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 U1-1 - Body ground Always 10 kohms or higher U1-2 - Body ground Always 10 kohms or higher FOR RH Tester Connection Condition Specified Condition T9-1 - Body ground Always 10 kohms or higher T9-2 - Body ground Always 10 kohms or higher TEXT IN ILLUSTRATION *A for LH *B for RH *a Front view of wire harness connector (to Front Seat Outer Belt Assembly) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 3
  3. REPLACE SEAT BELT CONTROL ECU. Refer to «REMOVAL [03/2012 - ]»(ref-600645-S28400278042014022400000)
  4. REPLACE FRONT SEAT OUTER BELT ASSEMBLY RH. Refer to «REMOVAL [03/2012 - ]»(ref-600659-S14748853652014022400000)
  5. REPLACE FRONT SEAT OUTER BELT ASSEMBLY LH. Refer to «REMOVAL [03/2012 - ]»(ref-600659-S14748853652014022400000)
  1. CHECK FOR DTC Clear the DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600626-S14193556412014022400000) . Check for DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600626-S14193556412014022400000) . OK DTCs B2015 to B2047 are not output. NG --> See step 3 OK --> See step 2
  2. USE SIMULATION METHOD TO CHECK. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [03/2012 - ]»(ref-600412-S12576599882014022400000)
  3. REPLACE SEAT BELT CONTROL ECU. Refer to «REMOVAL [03/2012 - ]»(ref-600645-S28400278042014022400000)
  1. CHECK FOR DTC (ELECTRONICALLY CONTROLLED BRAKE SYSTEM) Check for DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600441-S41685570292014022400000) . RESULT Result Proceed to Electronically controlled brake system DTC is not output A Electronically controlled brake system DTC is output B B --> See step 2 A --> See step 3
  2. GO TO ELECTRONICALLY CONTROLLED BRAKE SYSTEM. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [03/2012 - ]»(ref-600441-S41501498992014022400000)
  3. REPLACE SEAT BELT CONTROL ECU. Refer to «REMOVAL [03/2012 - ]»(ref-600645-S28400278042014022400000)
  1. CHECK FOR DTC (CAN COMMUNICATION SYSTEM) Select "Bus Check" from the "System Select". Refer to «DIAGNOSIS SYSTEM [03/2012 - ]»(ref-600620-S06280412312014022400000) . Select "Communication Malfunction DTC" from the "Bus Check" screen, and then select "Enter". RESULT Result Proceed to CAN communication system DTC is not output A CAN communication system DTC is output B B --> See step 6 A: Go to next step
  2. CHECK FOR DTC (PRE-COLLISION SYSTEM) Clear the DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600626-S14193556412014022400000) . Check for DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600626-S14193556412014022400000) . NG --> See step 3 OK --> See step 7
  3. REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) Replace the main body ECU (multiplex network body ECU) with a new one. Refer to «REMOVAL [03/2012 - ]»(ref-600595-S12145438012014022400000) . NEXT: Go to next step
  4. CHECK FOR DTC (PRE-COLLISION SYSTEM) Clear the DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600626-S14193556412014022400000) . Check for DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600626-S14193556412014022400000) . OK DTC B2064 is not output. NG --> See step 5 OK --> END (MAIN BODY ECU [MULTIPLEX NETWORK BODY ECU] WAS DEFECTIVE)
  5. REPLACE SEAT BELT CONTROL ECU. Refer to «REMOVAL [03/2012 - ]»(ref-600645-S28400278042014022400000)
  6. GO TO CAN COMMUNICATION SYSTEM. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [03/2012 - ]»(ref-600588-S38298476802014022400000)
  7. USE SIMULATION METHOD TO CHECK. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [03/2012 - ]»(ref-600412-S12576599882014022400000)
  1. CHECK FOR DTC (AIRBAG SYSTEM) Clear The DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600414-S09698904342014022400000) . Check for DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600414-S09698904342014022400000) . RESULT Result Proceed to DTC B1650 or B1656 is not output A DTC B1650 or B1656 is output B B --> See step 4 A: Go to next step
  2. CHECK FOR DTC Clear The DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600626-S14193556412014022400000) . Check for DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600626-S14193556412014022400000) . RESULT Result Proceed to DTC B2074 or B2075 is not output A DTC B2074 or B2075 is output B B --> See step 3 A --> See step 5
  3. REPLACE SEAT BELT CONTROL ECU. Refer to «REMOVAL [03/2012 - ]»(ref-600645-S28400278042014022400000)
  4. GO TO AIRBAG SYSTEM. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [03/2012 - ]»(ref-600414-S14754552662014022400000)
  5. USE SIMULATION METHOD TO CHECK. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [03/2012 - ]»(ref-600412-S12576599882014022400000)
  1. CHECK FOR DTC (CAN COMMUNICATION SYSTEM) Select "Bus Check" from the "System Select". Refer to «DIAGNOSTIC TROUBLE CODE CHART [03/2012 - ]»(ref-600620-S30655672282014022400000) . Select "Communication Malfunction DTC" from the "Bus Check" screen, and then select "Enter". OK CAN communication system DTC is not output. NG --> See step 4 OK: Go to next step
  2. CHECK FOR DTC (PRE-COLLISION SYSTEM) Clear the DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600626-S14193556412014022400000) . Check for DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600626-S14193556412014022400000) . OK DTC B2085 is not output. NG --> See step 5 OK --> See step 3
  3. USE SIMULATION METHOD TO CHECK. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [03/2012 - ]»(ref-600412-S12576599882014022400000)
  4. GO TO CAN COMMUNICATION SYSTEM. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [03/2012 - ]»(ref-600588-S38298476802014022400000)
  5. REPLACE SEAT BELT CONTROL ECU. Refer to «REMOVAL [03/2012 - ]»(ref-600645-S28400278042014022400000)
  1. CHECK FOR DTC (CRUISE CONTROL SYSTEM) Check for DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600617-S35142664312014022400000) . OK Cruise control system DTCs are not output. NG --> See step 8 OK: Go to next step
  2. CHECK FOR DTC (DYNAMIC RADAR CRUISE CONTROL SYSTEM) Check for DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600621-S12095371332014022400000) . OK Dynamic radar cruise control system DTCs are not output. NG --> See step 9 OK: Go to next step
  3. CHECK FOR DTC (LANE-KEEPING ASSIST SYSTEM) Check for DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600629-S13006290592014022400000) . OK Lane-keeping assist system DTCs are not output. NG --> See step 10 OK: Go to next step
  4. CHECK FOR DTC (PRE-COLLISION SYSTEM) Check the DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600626-S14193556412014022400000) . OK DTCs for Pre-Collision 2 are not output. NG --> See step 11 OK: Go to next step
  5. ADJUST LANE RECOGNITION CAMERA SENSOR ASSEMBLY Adjust the lane recognition camera sensor assembly. Refer to «ADJUSTMENT [03/2012 - ]»(ref-600437-S15758843452014022400000) . NEXT: Go to next step
  6. CHECK FOR DTC (PRE-COLLISION SYSTEM) Clear the DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600626-S14193556412014022400000) . Check for DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600626-S14193556412014022400000) . OK DTC B2090 is not output. NG --> See step 7 OK --> END
  7. REPLACE SEAT BELT CONTROL ECU. Refer to «REMOVAL [03/2012 - ]»(ref-600645-S28400278042014022400000)
  8. GO TO CRUISE CONTROL SYSTEM. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [03/2012 - ]»(ref-600617-S02132487412014022400000)
  9. GO TO DYNAMIC RADAR CRUISE CONTROL SYSTEM. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [03/2012 - ]»(ref-600621-S15917290982014022400000)
  10. GO TO LANE-KEEPING ASSIST SYSTEM. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [03/2012 - ]»(ref-600629-S05485218412014022400000)
  11. GO TO DIAGNOSTIC TROUBLE CODE CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART [03/2012 - ]»(ref-600626-S38304704132014022400000)
  1. CHECK FOR DTC (PRE-COLLISION SYSTEM) Clear the DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600626-S14193556412014022400000) . Check for DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600626-S14193556412014022400000) . OK DTC C1A01 is not output. NOTE: When replacing the driving support ECU, always replace it with a new one and be sure to perform initialization. Refer to «INITIALIZATION [03/2012 - ]»(ref-600437-S18083815732014022400000) . If an ECU which was installed to another vehicle is used, the information stored in the ECU will not match the information from the vehicle, and as a result, a DTC may be stored. NG --> See step 2 OK --> See step 3
  2. REPLACE DRIVING SUPPORT ECU. Refer to «REMOVAL [03/2012 - ]»(ref-600437-S11462274982014022400000)
  3. USE SIMULATION METHOD TO CHECK. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [03/2012 - ]»(ref-600412-S12576599882014022400000)
  1. READ VALUE USING TECHSTREAM (COUNTRY) Use the Data List to check if the country specification information is correct. Refer to «DATA LIST / ACTIVE TEST [03/2012 - ]»(ref-600626-S01077796042014022400000) . PRE-COLLISION 2 Tester Display Measurement Item/Range Normal Condition Diagnostic Note Country# (DSS) Driving support ECU country signal / JPN, NA, EURO, AUS, SAFC, OTHER, TWN, CHINA, THAI, GCC or NOFIX Actual country code - HINT: The country specification information stored in the driving support ECU is determined by the country specification information stored in the main body ECU (multiplex network body ECU). If the country specification information for the millimeter wave radar sensor matches the vehicle, the country specification information for the main body ECU (multiplex network body ECU) and driving support ECU is incorrect and the main body ECU (multiplex network body ECU) and driving support ECU need to be replaced. OK The country specification information in the driving support ECU matches the vehicle. NG --> REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) AND DRIVING SUPPORT ECU OK: Go to next step
  2. CHECK FOR DTC Clear the DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600626-S14193556412014022400000) . Check for DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600626-S14193556412014022400000) . OK DTC C1A02 is not output. NOTE: When replacing the driving support ECU, always replace it with a new one and be sure to perform initialization. Refer to «INITIALIZATION [03/2012 - ]»(ref-600437-S18083815732014022400000) . If an ECU which was installed to another vehicle is used, the information stored in the ECU will not match the information from the vehicle, and as a result, a DTC may be stored. NG --> See step 3 OK --> See step 4
  3. REPLACE DRIVING SUPPORT ECU. Refer to «REMOVAL [03/2012 - ]»(ref-600437-S11462274982014022400000)
  4. USE SIMULATION METHOD TO CHECK. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [03/2012 - ]»(ref-600412-S12576599882014022400000)
  1. READ VALUE USING TECHSTREAM (COUNTRY) Use the Data List to check if the country specification information is correct. Refer to «DATA LIST / ACTIVE TEST [03/2012 - ]»(ref-600626-S01077796042014022400000) . RADAR CRUISE Tester Display Measurement Item/Range Normal Condition Diagnostic Note Country# (F Radar Sens) Millimeter wave radar sensor country signal / JPN, NA, EURO, AUS, SAFC, OTHER, TWN, CHINA, THAI, GCC, NOFIX Actual country code - RESULT Result Proceed to Country specification information for vehicle and front millimeter wave radar sensor match A Country specification information for vehicle and front millimeter wave radar sensor do not match B HINT: The country specification information stored in the driving support ECU is determined by the country specification information stored in the main body ECU. If the country specification information for the millimeter wave radar sensor matches the vehicle, the country specification information for the main body ECU and driving support ECU is incorrect and the main body ECU and driving support ECU need to be replaced. B --> See step 4 A: Go to next step
  2. CHECK FOR DTC (PRE-COLLISION SYSTEM) Clear the DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600626-S14193556412014022400000) . Check for DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600626-S14193556412014022400000) . OK DTC C1A0A is not output. NOTE: When replacing the driving support ECU, always replace it with a new one and be sure to perform initialization. Refer to «INITIALIZATION [03/2012 - ]»(ref-600437-S18083815732014022400000) . If an ECU which was installed to another vehicle is used, the information stored in the ECU will not match the information from the vehicle, and as a result, a DTC may be stored. NG --> See step 5 OK --> See step 3
  3. USE SIMULATION METHOD TO CHECK. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [03/2012 - ]»(ref-600412-S12576599882014022400000)
  4. REPLACE MILLIMETER WAVE RADAR SENSOR ASSEMBLY. Refer to «REMOVAL [03/2012 - ]»(ref-600437-S01407174582014022400000)
  5. REPLACE DRIVING SUPPORT ECU. Refer to «REMOVAL [03/2012 - ]»(ref-600437-S11462274982014022400000)
  1. REPLACE LANE RECOGNITION CAMERA SENSOR ASSEMBLY Replace the lane recognition camera sensor assembly with a new one. Refer to «REMOVAL [03/2012 - ]»(ref-600437-S27310963172014022400000) . Adjust the lane recognition camera sensor. Refer to «ADJUSTMENT [03/2012 - ]»(ref-600437-S15758843452014022400000) . NEXT: Go to next step
  2. CHECK FOR DTC (PRE-COLLISION SYSTEM) Clear the DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600626-S14193556412014022400000) . Check for DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600626-S14193556412014022400000) . OK DTC C1A0C is not output. NOTE: When replacing the driving support ECU, always replace it with a new one and be sure to perform initialization. Refer to «INITIALIZATION [03/2012 - ]»(ref-600437-S18083815732014022400000) . If an ECU which was installed to another vehicle is used, the information stored in the ECU will not match the information from the vehicle, and as a result, a DTC may be stored. NG --> See step 3 OK --> END (LANE RECOGNITION CAMERA SENSOR ASSEMBLY WAS DEFECTIVE)
  3. REPLACE DRIVING SUPPORT ECU. Refer to «REMOVAL [03/2012 - ]»(ref-600437-S11462274982014022400000)
  1. REPLACE MILLIMETER WAVE RADAR SENSOR ASSEMBLY Replace the millimeter wave radar sensor assembly with a new one. Refer to «REMOVAL [03/2012 - ]»(ref-600437-S01407174582014022400000) . NEXT: Go to next step
  2. ADJUST MILLIMETER WAVE RADAR SENSOR ASSEMBLY Adjust the millimeter wave radar sensor assembly. Refer to «ADJUSTMENT [03/2012 - ]»(ref-600437-S16983927702014022400000) . NEXT: Go to next step
  3. CHECK FOR DTC (PRE-COLLISION SYSTEM) Clear the DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600626-S14193556412014022400000) . Check for DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600626-S14193556412014022400000) . OK DTC C1A10 is not output. NOTE: When replacing the driving support ECU, always replace it with a new one and be sure to perform initialization. Refer to «INITIALIZATION [03/2012 - ]»(ref-600437-S18083815732014022400000) . If an ECU which was installed to another vehicle is used, the information stored in the ECU will not match the information from the vehicle, and as a result, a DTC may be stored. NG --> See step 4 OK --> END (MILLIMETER WAVE RADAR SENSOR WAS DEFECTIVE)
  4. REPLACE DRIVING SUPPORT ECU. Refer to «REMOVAL [03/2012 - ]»(ref-600437-S11462274982014022400000)
  1. ADJUST MILLIMETER WAVE RADAR SENSOR ASSEMBLY Check that the bracket of the millimeter wave radar sensor assembly is not deformed. HINT: If the bracket is deformed, replace the millimeter wave radar sensor assembly. Adjust the millimeter wave radar sensor assembly. Refer to «ADJUSTMENT [03/2012 - ]»(ref-600437-S16983927702014022400000) . NEXT: Go to next step
  2. CHECK FOR DTC (PRE-COLLISION SYSTEM) Clear the DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600626-S14193556412014022400000) . Check for DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600626-S14193556412014022400000) . OK DTC C1A11 or C1A14 is not output. NOTE: When replacing the driving support ECU, always replace it with a new one and be sure to perform initialization. Refer to «INITIALIZATION [03/2012 - ]»(ref-600437-S18083815732014022400000) . If an ECU which was installed to another vehicle is used, the information stored in the ECU will not match the information from the vehicle, and as a result, a DTC may be stored. NG --> See step 3 OK --> END
  3. REPLACE DRIVING SUPPORT ECU. Refer to «REMOVAL [03/2012 - ]»(ref-600437-S11462274982014022400000)
  1. REPLACE LANE RECOGNITION CAMERA SENSOR ASSEMBLY Replace the lane recognition camera sensor assembly with a new one. Refer to «REMOVAL [03/2012 - ]»(ref-600437-S27310963172014022400000) . NEXT: Go to next step
  2. ADJUST LANE RECOGNITION CAMERA SENSOR ASSEMBLY Adjust the lane recognition camera sensor assembly. Refer to «ADJUSTMENT [03/2012 - ]»(ref-600437-S15758843452014022400000) . NEXT: Go to next step
  3. CHECK FOR DTC (PRE-COLLISION SYSTEM) Clear DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600626-S14193556412014022400000) . Make sure the following conditions are met: Pre-collision system: The power switch is on (IG). Radar cruise control system: The vehicle is being driven at a speed of approximately 50 km/h (31 mph) or more and the distance control switch is on. Lane keeping assist system: The vehicle is being driven at a speed of approximately 50 km/h (31 mph) or more and the lane keeping assist main switch is on. Check for DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600626-S14193556412014022400000) . OK DTC C1A20 is not output. NOTE: When replacing the driving support ECU, always replace it with a new one and be sure to perform initialization. Refer to «INITIALIZATION [03/2012 - ]»(ref-600437-S18083815732014022400000) . If an ECU which was installed to another vehicle is used, the information stored in the ECU will not match the information from the vehicle, and as a result, a DTC may be stored. NG --> See step 4 OK --> END (LANE RECOGNITION CAMERA SENSOR ASSEMBLY WAS DEFECTIVE)
  4. REPLACE DRIVING SUPPORT ECU. Refer to «REMOVAL [03/2012 - ]»(ref-600437-S11462274982014022400000)
  1. ADJUST LANE RECOGNITION CAMERA SENSOR ASSEMBLY Adjust the lane recognition camera sensor assembly. Refer to «ADJUSTMENT [03/2012 - ]»(ref-600437-S15758843452014022400000) . NEXT: Go to next step
  2. CHECK FOR DTC (PRE-COLLISION SYSTEM) Clear DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600626-S14193556412014022400000) . Make sure the following conditions are met: HINT: If the detection conditions are not met, the system cannot detect malfunctions. Pre-collision system: The power switch is on (IG) (for DTC C1A23, the vehicle needs to be driven at a speed 10 km/h (6 mph) or more). Radar cruise control system: The vehicle is being driven at a speed of approximately 50 km/h (31 mph) or more and the distance control switch is on. Lane keeping assist system: The vehicle is being driven at a speed of approximately 50 km/h (31 mph) or more and the lane keeping assist main switch is on. Check for DTCs. OK DTCs C1A22 and C1A23 are not output. NG --> See step 3 OK --> END
  3. REPLACE LANE RECOGNITION CAMERA SENSOR ASSEMBLY Replace the lane recognition camera sensor assembly with a new one. Refer to «REMOVAL [03/2012 - ]»(ref-600437-S27310963172014022400000) . NEXT: Go to next step
  4. ADJUST LANE RECOGNITION CAMERA SENSOR ASSEMBLY Adjust the lane recognition camera sensor assembly. Refer to «ADJUSTMENT [03/2012 - ]»(ref-600437-S15758843452014022400000) . NEXT: Go to next step
  5. CHECK FOR DTC (PRE-COLLISION SYSTEM) Clear the DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600626-S14193556412014022400000) . Make sure the following conditions are met: HINT: If the detection conditions are not met, the system cannot detect malfunctions. Pre-collision system: The power switch is on (IG) (for DTC C1A23, the vehicle needs to be driven at a speed 10 km/h (6 mph) or more). Radar cruise control system: The vehicle is being driven at a speed of approximately 50 km/h (31 mph) or more and the distance control switch is on. Lane keeping assist system: The vehicle is being driven at a speed of approximately 50 km/h (31 mph) or more and the lane keeping assist main switch is on. Check for DTCs. OK DTCs C1A22 and C1A23 are not output. NOTE: When replacing the driving support ECU, always replace it with a new one and be sure to perform initialization. Refer to «INITIALIZATION [03/2012 - ]»(ref-600437-S18083815732014022400000) . If an ECU which was installed to another vehicle is used, the information stored in the ECU will not match the information from the vehicle, and as a result, a DTC may be stored. NG --> See step 6 OK --> END (LANE RECOGNITION CAMERA SENSOR ASSEMBLY WAS DEFECTIVE)
  6. REPLACE DRIVING SUPPORT ECU. Refer to «REMOVAL [03/2012 - ]»(ref-600437-S11462274982014022400000)
  1. REPLACE DRIVER MONITOR ECU Replace the driver monitor ECU with a new one. Refer to «REMOVAL [03/2012 - ]»(ref-600645-S11754677372014022400000) . NEXT: Go to next step
  2. CHECK FOR DTC (PRE-COLLISION SYSTEM) Clear the DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600626-S14193556412014022400000) . Check for DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600626-S14193556412014022400000) . OK DTC C1A30 is not output. NG --> See step 3 OK --> END (DRIVER MONITOR ECU WAS DEFECTIVE)
  3. REPLACE DRIVING SUPPORT ECU. Refer to «REMOVAL [03/2012 - ]»(ref-600437-S11462274982014022400000)
  1. REPLACE DRIVER MONITOR CAMERA Temporally replace the driver monitor camera with a new or normally functioning one. Refer to «REMOVAL [03/2012 - ]»(ref-600645-S33511224362014022400000) . NEXT: Go to next step
  2. CHECK FOR DTC (PRE-COLLISION SYSTEM) Clear the DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600626-S14193556412014022400000) . Check for DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600626-S14193556412014022400000) . OK DTC C1A31 is not output. NOTE: When replacing the driving support ECU, always replace it with a new one and be sure to perform initialization. Refer to «INITIALIZATION [03/2012 - ]»(ref-600437-S18083815732014022400000) . If an ECU which was installed to another vehicle is used, the information stored in the ECU will not match the information from the vehicle, and as a result, a DTC may be stored. NG --> See step 3 OK --> END (DRIVER MONITOR CAMERA WAS DEFECTIVE)
  3. REPLACE DRIVING SUPPORT ECU. Refer to «REMOVAL [03/2012 - ]»(ref-600437-S11462274982014022400000)
  1. CHECK FOR DTC (HYBRID CONTROL SYSTEM) Clear the DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600583-S31071724722014022400000) . Make sure the following conditions are met: HINT: If the detection conditions are not met, the system cannot detect malfunctions. Pre-collision system: The power switch on (IG). Radar cruise control system: The vehicle is being driven at a speed of approximately 50 km/h (31 mph) or more and the distance control switch is on. Check for DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600583-S31071724722014022400000) . OK Hybrid control system DTCs are not output. NG --> See step 8 OK: Go to next step
  2. CHECK FOR DTC (SFI SYSTEM) Clear DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600436-S38423165432014022400000) . Make sure the following conditions are met: HINT: If the detection conditions are not met, the system cannot detect malfunctions. Pre-collision system: The power switch on (IG). Radar cruise control system: The vehicle is being driven at a speed of approximately 50 km/h (31 mph) or more and the distance control switch is on. Check for DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600436-S38423165432014022400000) . OK SFI system DTCs are not output. NG --> See step 9 OK: Go to next step
  3. CHECK FOR DTC (PRE-COLLISION SYSTEM) Clear the DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600626-S14193556412014022400000) . Make sure the following conditions are met: HINT: If the detection conditions are not met, the system cannot detect malfunctions. Pre-collision system: The power switch on (IG) Radar cruise control system: The vehicle is being driven at a speed of approximately 50 km/h (31 mph) or more and the distance control switch is on. Check for DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600626-S14193556412014022400000) . OK DTC C1A40 is not output. NG --> See step 4 OK --> END (DRIVING SUPPORT ECU WAS DEFECTIVE)
  4. REPLACE DRIVING SUPPORT ECU Replace the driving support ECU with a new one. Refer to «REMOVAL [03/2012 - ]»(ref-600437-S11462274982014022400000) . NOTE: When replacing the driving support ECU, always replace it with a new one and be sure to perform initialization. Refer to «INITIALIZATION [03/2012 - ]»(ref-600437-S18083815732014022400000) . If an ECU which was installed to another vehicle is used, the information stored in the ECU will not match the information from the vehicle, and as a result, a DTC may be stored. NEXT: Go to next step
  5. CHECK FOR DTC Clear the DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600626-S14193556412014022400000) . Make sure the following conditions are met: HINT: If the detection conditions are not met, the system cannot detect malfunctions. Pre-collision system: The power switch on (IG). Radar cruise control system: The vehicle is being driven at a speed of approximately 50 km/h (31 mph) or more and the distance control switch is on. Check for DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600626-S14193556412014022400000) . OK DTC C1A40 is not output. NG --> See step 6 OK --> END (DRIVING SUPPORT ECU WAS DEFECTIVE)
  6. REPLACE POWER MANAGEMENT CONTROL ECU Replace the power management control ECU with a new one. Refer to «REMOVAL [03/2012 - ]»(ref-600595-S22014970062014022400000) . NEXT: Go to next step
  7. CHECK FOR DTC Clear the DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600626-S14193556412014022400000) . Make sure the following conditions are met: HINT: If the detection conditions are not met, the system cannot detect malfunctions. Pre-collision system: The power switch on (IG). Radar cruise control system: The vehicle is being driven at a speed of approximately 50 km/h (31 mph) or more and the distance control switch is on. Check for DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600626-S14193556412014022400000) . OK DTC C1A40 is not output. NG --> See step 10 OK --> END (DRIVING SUPPORT ECU WAS DEFECTIVE)
  8. GO TO HYBRID CONTROL SYSTEM. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [03/2012 - ]»(ref-600583-S29316758402014022400000)
  9. GO TO SFI SYSTEM. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [03/2012 - ]»(ref-600436-S13228048082014022400000)
  10. REPLACE ECM. Refer to «REMOVAL [03/2012 - ]»(ref-600565-S01816401622014022400000)
  1. CHECK FOR DTC (ELECTRONICALLY CONTROLLED BRAKE SYSTEM) Clear the DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600583-S31071724722014022400000) . Check for DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600583-S31071724722014022400000) . OK Electronically controlled brake system DTC is not output. NG --> See step 8 OK: Go to next step
  2. CHECK FOR DTC (HYBRID CONTROL SYSTEM) Clear the DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600583-S31071724722014022400000) . Check for DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600583-S31071724722014022400000) . OK Hybrid control system DTC is not output. NG --> See step 11 OK: Go to next step
  3. CHECK FOR DTC (PRE-COLLISION SYSTEM) Clear the DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600626-S14193556412014022400000) . Check for DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600626-S14193556412014022400000) . OK DTC C1A41 is not output. NG --> See step 4 OK --> See step 10
  4. REPLACE DRIVING SUPPORT ECU Replace the driving support ECU with a new one. Refer to «REMOVAL [03/2012 - ]»(ref-600437-S11462274982014022400000) . NOTE: When replacing the driving support ECU, always replace it with a new one and be sure to perform initialization. Refer to «INITIALIZATION [03/2012 - ]»(ref-600437-S18083815732014022400000) . If an ECU which was installed to another vehicle is used, the information stored in the ECU will not match the information from the vehicle, and as a result, a DTC may be stored. NEXT: Go to next step
  5. CHECK FOR DTC Clear the DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600626-S14193556412014022400000) . Check for DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600626-S14193556412014022400000) . OK DTC C1A41 is not output. NG --> See step 6 OK --> END (DRIVING SUPPORT ECU IS DEFECTIVE)
  6. REPLACE SKID CONTROL ECU ASSEMBLY Replace the skid control ECU assembly with a new one. Refer to «REMOVAL [03/2012 - ]»(ref-600606-S38751024972014022400000) . NEXT: Go to next step
  7. CHECK FOR DTC (PRE-COLLISION SYSTEM) Clear the DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600626-S14193556412014022400000) . Check for DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600626-S14193556412014022400000) . OK DTC C1A41 is not output. NG --> See step 9 OK --> END (SKID CONTROL ECU ASSEMBLY IS DEFECTIVE)
  8. GO TO ELECTRONICALLY CONTROLLED BRAKE SYSTEM. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [03/2012 - ]»(ref-600583-S29316758402014022400000)
  9. REPLACE POWER MANAGEMENT CONTROL ECU. Refer to «REMOVAL [03/2012 - ]»(ref-600595-S22014970062014022400000)
  10. USE SIMULATION METHOD TO CHECK. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [03/2012 - ]»(ref-600412-S12576599882014022400000)
  11. GO TO HYBRID CONTROL SYSTEM. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [03/2012 - ]»(ref-600583-S29316758402014022400000)
  1. CHECK FOR DTC (ELECTRONICALLY CONTROLLED BRAKE SYSTEM) Clear the DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600441-S41685570292014022400000) . Check for DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600441-S41685570292014022400000) . OK DTCs C1435, C1436 and C1443 are not output. NG --> See step 3 OK: Go to next step
  2. CHECK FOR DTC (PRE-COLLISION SYSTEM) Clear the DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600626-S14193556412014022400000) . Check for DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600626-S14193556412014022400000) . NOTE: When replacing the driving support ECU, always replace it with a new one and be sure to perform initialization. Refer to «INITIALIZATION [03/2012 - ]»(ref-600437-S18083815732014022400000) . If an ECU which was installed to another vehicle is used, the information stored in the ECU will not match the information from the vehicle, and as a result, a DTC may be stored. NG --> See step 4 OK --> See step 5
  3. GO TO ELECTRONICALLY CONTROLLED BRAKE SYSTEM. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [03/2012 - ]»(ref-600441-S41501498992014022400000)
  4. REPLACE DRIVING SUPPORT ECU. Refer to «REMOVAL [03/2012 - ]»(ref-600437-S11462274982014022400000)
  5. USE SIMULATION METHOD TO CHECK. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [03/2012 - ]»(ref-600412-S12576599882014022400000)
  1. CHECK FOR DTC (ELECTRONICALLY CONTROLLED BRAKE SYSTEM) Clear the DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600441-S41685570292014022400000) . Check for DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600441-S41685570292014022400000) . OK DTCs C1432, C1433 and C1434 are not output. NG --> See step 3 OK: Go to next step
  2. CHECK FOR DTC (PRE-COLLISION SYSTEM) Clear the DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600626-S14193556412014022400000) . Check for DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600626-S14193556412014022400000) . OK DTC C1A47 is not output. NOTE: When replacing the driving support ECU, always replace it with a new one and be sure to perform initialization. Refer to «INITIALIZATION [03/2012 - ]»(ref-600437-S18083815732014022400000) . If an ECU which was installed to another vehicle is used, the information stored in the ECU will not match the information from the vehicle, and as a result, a DTC may be stored. NG --> See step 4 OK --> See step 5
  3. GO TO ELECTRONICALLY CONTROLLED BRAKE SYSTEM. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [03/2012 - ]»(ref-600441-S41501498992014022400000)
  4. REPLACE DRIVING SUPPORT ECU. Refer to «REMOVAL [03/2012 - ]»(ref-600437-S11462274982014022400000)
  5. USE SIMULATION METHOD TO CHECK. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [03/2012 - ]»(ref-600412-S12576599882014022400000)
  1. PERFORM ACTIVE TEST USING TECHSTREAM (DSS SIGNAL BUZZER) Turn the power switch off. Connect the Techstream to the DLC3. Turn the power switch on (IG). Turn the Techstream on. Enter the following menus: Chassis / ABS/VSC/TRAC / Active Test. Refer to «DATA LIST / ACTIVE TEST [03/2012 - ]»(ref-600626-S01077796042014022400000) . ABS/VSC/TRAC Tester Display Test Part Control Range Diagnostic Note Buzzer Skid control buzzer ON/OFF The buzzer can be heard. OK Skid control buzzer sounds. NG --> See step 4 OK: Go to next step
  2. REPLACE SKID CONTROL ECU ASSEMBLY Replace the skid control ECU assembly with a new one. Refer to «REMOVAL [03/2012 - ]»(ref-600606-S38751024972014022400000) . NEXT: Go to next step
  3. CHECK FOR DTC (PRE-COLLISION SYSTEM) Clear the DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600626-S14193556412014022400000) . Check for DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600626-S14193556412014022400000) . OK DTC C1A4A is not output. NOTE: When replacing the driving support ECU, always replace it with a new one and be sure to perform initialization. Refer to «INITIALIZATION [03/2012 - ]»(ref-600437-S18083815732014022400000) . If an ECU which was installed to another vehicle is used, the information stored in the ECU will not match the information from the vehicle, and as a result, a DTC may be stored. NG --> See step 5 OK --> END (BRAKE ACTUATOR ASSEMBLY WAS DEFECTIVE)
  4. GO TO ELECTRONICALLY CONTROLLED BRAKE SYSTEM. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [03/2012 - ]»(ref-600441-S41501498992014022400000)
  5. REPLACE DRIVING SUPPORT ECU. Refer to «REMOVAL [03/2012 - ]»(ref-600437-S11462274982014022400000)
  1. CHECK FOR DTC (ELECTRONICALLY CONTROLLED BRAKE SYSTEM) Clear the DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600441-S41685570292014022400000) . Check for DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600441-S41685570292014022400000) . OK Electronically controlled brake system DTCs are not output. NG --> See step 3 OK --> See step 2
  2. REPLACE DRIVING SUPPORT ECU. Refer to «REMOVAL [03/2012 - ]»(ref-600437-S11462274982014022400000)
  3. GO TO ELECTRONICALLY CONTROLLED BRAKE SYSTEM. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [03/2012 - ]»(ref-600441-S41501498992014022400000)
  1. CHECK FOR DTC (CAN COMMUNICATION SYSTEM) Select "Bus Check" from the "System Select". Refer to «DIAGNOSIS SYSTEM [03/2012 - ]»(ref-600620-S06280412312014022400000) . Select "Communication Malfunction DTC" from the "Bus Check" screen, and then select "Enter". RESULT Result Proceed to CAN communication system DTC is not output A CAN communication system DTC is output B B --> See step 3 A --> See step 2
  2. USE SIMULATION METHOD TO CHECK. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [03/2012 - ]»(ref-600412-S12576599882014022400000)
  3. GO TO CAN COMMUNICATION SYSTEM. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [03/2012 - ]»(ref-600588-S38298476802014022400000)
  1. READ VALUE USING TECHSTREAM (PCS BRAKE OFF SWITCH) Use the Data List to check if the pre-collision system cancel switch assembly is functioning properly. Refer to «DATA LIST / ACTIVE TEST [03/2012 - ]»(ref-600626-S01077796042014022400000) . PRE-COLLISION 2 Tester Display Measurement Item/Range Normal Condition Diagnostic Note PCS Brake OFF Switch pre-collision system cancel switch assembly signal / ON or OFF ON: pre-collision system cancel switch assembly on OFF: pre-collision system cancel switch assembly off - OK On screen, each item changes between ON and OFF according to above chart. NG --> See step 2 OK --> See step 4
  2. INSPECT PRE-COLLISION SYSTEM CANCEL SWITCH ASSEMBLY Remove the pre-collision system cancel switch assembly. Refer to «REMOVAL [03/2012 - ]»(ref-600691-S40531094332014022400000) . Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition 1 - 2 Pressed Below 1 ohms Not pressed 10 kohms or higher NG --> See step 5 OK: Go to next step
  3. CHECK HARNESS AND CONNECTOR (PRE-COLLISION SYSTEM CANCEL SWITCH ASSEMBLY - DRIVING SUPPORT ECU) Disconnect the N15 pre-collision system cancel switch assembly connector. Disconnect the N5 driving support ECU connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition N15-1 - N5-5 (PBSW) Always Below 1 ohms N15-2 - Body ground N15-1 - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 6
  4. PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to «PROBLEM SYMPTOMS TABLE [03/2012 - ]»(ref-600626-S08201809222014022400000)
  5. REPLACE PRE-COLLISION SYSTEM CANCEL SWITCH ASSEMBLY. Refer to «REMOVAL [03/2012 - ]»(ref-600691-S40531094332014022400000)
  6. REPLACE DRIVING SUPPORT ECU. Refer to «REMOVAL [03/2012 - ]»(ref-600437-S11462274982014022400000)

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