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Contents Wiring diagrams Section: Anti-Lock/traction Control All sections

Electronically Controlled Brake System (Diagnostic Codes & Symptom Tests): Other Lexus GS IV

Anti-Lock/traction Control ~12795 words

PROCEDURE

  1. CHECK ABS CONTROL SYSTEM Clear the DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600441-S41685570292014022400000) . Turn the power switch on (READY). Drive the vehicle at a speed of approximately 40 km/h (25 mph) or more for 60 seconds or more. Check if the same DTC is recorded. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600441-S41685570292014022400000) . Result Result Proceed to DTC (ABS control system DTC) is not output A DTC (ABS control system DTC) is output B B --> See step 4 A: Go to next step
  2. RECONFIRM DTC Turn the power switch off. Clear the DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600441-S41685570292014022400000) . Turn the power switch on (READY). Drive the vehicle at a speed of approximately 40 km/h (25 mph) or more for 60 seconds or more. Check if the same DTC is recorded. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600441-S41685570292014022400000) . Result Result Proceed to DTCs (36 and 43) are not output A DTCs (36 and/or 43) are output B B --> See step 5 A --> See step 3
  3. CHECK FOR INTERMITTENT PROBLEMS. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [03/2012 - ]»(ref-600412-S12576599882014022400000)
  4. REPAIR CIRCUITS INDICATED BY OUTPUT DTCS. Refer to «DIAGNOSTIC TROUBLE CODE CHART [03/2012 - ]»(ref-600441-S14604054422014022400000)
  5. REPLACE SKID CONTROL ECU ASSEMBLY. Refer to «REMOVAL [03/2012 - ]»(ref-600606-S38751024972014022400000)
  1. CHECK ELECTRONICALLY CONTROLLED BRAKE SYSTEM Clear the DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600441-S41685570292014022400000) . Turn the power switch on (READY). Drive the vehicle at a speed of approximately 40 km/h (25 mph) or more for 60 seconds or more. Check if the same DTC is recorded. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600441-S41685570292014022400000) . Result Result Proceed to DTC (Electronically controlled brake system DTC) is not output A DTC (Electronically controlled brake system DTC) is output B B --> See step 4 A: Go to next step
  2. RECONFIRM DTC Turn the power switch off. Clear the DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600441-S41685570292014022400000) . Turn the power switch on (READY). Drive the vehicle at a speed of approximately 40 km/h (25 mph) or more for 60 seconds or more. Check if the same DTC is recorded. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600441-S41685570292014022400000) . Result Result Proceed to DTCs (42 and 45) are not output A DTCs (42 and/or 45) are output B B --> See step 5 A --> See step 3
  3. CHECK FOR INTERMITTENT PROBLEMS. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [03/2012 - ]»(ref-600412-S12576599882014022400000)
  4. REPAIR CIRCUITS INDICATED BY OUTPUT DTCS. Refer to «DIAGNOSTIC TROUBLE CODE CHART [03/2012 - ]»(ref-600441-S14604054422014022400000)
  5. REPLACE SKID CONTROL ECU ASSEMBLY. Refer to «REMOVAL [03/2012 - ]»(ref-600606-S38751024972014022400000)
  1. PERFORM INITIALIZATION AND CALIBRATION OF LINEAR SOLENOID VALVE Perform initialization and calibration of the linear solenoid valve. Refer to «INITIALIZATION [03/2012 - ]»(ref-600441-S22422215162014022400000) . HINT: Before carrying out Perform Initialization and Calibration of Linear Solenoid Valve, C1203/95 will be output. NEXT: Go to next step
  2. RECONFIRM DTC Turn the power switch off. Clear the DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600441-S41685570292014022400000) . Turn the power switch on (IG). Check if the same DTC is recorded. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600441-S41685570292014022400000) . Result Result Proceed to DTC (C1203/95) is output A DTC (C1203/95) is not output B B --> END A: Go to next step
  3. CHECK PART NUMBER (SKID CONTROL ECU ASSEMBLY) Check that a proper skid control ECU assembly is installed. OK Proper skid control ECU assembly is installed. Check if the skid control ECU assembly had been replaced before the DTC was stored. OK Skid control ECU assembly had not been replaced. Result Result Proceed to OK A NG (The skid control ECU assembly had been replaced) B NG (A proper skid control ECU assembly is not installed) C B --> See step 5 C --> See step 8 A: Go to next step
  4. RECONFIRM DTC Clear the DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600441-S41685570292014022400000) . Turn the power switch on (IG). Check if the same DTC is recorded. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600441-S41685570292014022400000) . Result Result Proceed to DTC (C1203/95) is not output A DTC (C1203/95) is output B B --> See step 8 A --> See step 6
  5. CHECK INITIALIZATION AND CALIBRATION OF LINEAR SOLENOID VALVE After replacing the skid control ECU assembly, check that the initialization and calibration of the linear solenoid valve is being performed. OK Initialization and calibration of the linear solenoid valve is being performed. HINT: If a new skid control ECU assembly is installed, C1203/95 is output before initialization and calibration of the linear solenoid valve is performed. NG --> See step 7 OK --> See step 8
  6. CHECK FOR INTERMITTENT PROBLEMS. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [03/2012 - ]»(ref-600412-S12576599882014022400000)
  7. PERFORM INITIALIZATION AND CALIBRATION OF LINEAR SOLENOID VALVE. Refer to «INITIALIZATION [03/2012 - ]»(ref-600441-S22422215162014022400000)
  8. REPLACE SKID CONTROL ECU ASSEMBLY. Refer to «REMOVAL [03/2012 - ]»(ref-600606-S38751024972014022400000)
  1. PERFORM ZERO POINT CALIBRATION OF YAW RATE AND ACCELERATION SENSOR Perform zero point calibration of the yaw rate and acceleration sensor. Refer to «CALIBRATION [03/2012 - ]»(ref-600441-S38783757642014022400000) . NEXT: Go to next step
  2. RECONFIRM DTC Turn the power switch off. Clear the DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600441-S41685570292014022400000) . Turn the power switch on (READY). Drive the vehicle at a speed of 30 km/h (18 mph) or more, turn the steering wheel, and decelerate (depress the brake pedal) the vehicle. Check if the same DTC is recorded. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600441-S41685570292014022400000) . Result Result Proceed to DTCs (C1210/36 and/or C1336/98) are output A DTCs (C1210/36 and C1336/98) are not output B HINT: The DTCs are recorded because zero point calibration has not been completed. End the procedure because the same DTCs are not recorded after completion of zero point calibration. B --> END A: Go to next step
  3. CHECK YAW RATE SENSOR INSTALLATION Turn the power switch off. Check that the yaw rate sensor has been installed properly. Refer to «INSTALLATION [03/2012 - ]»(ref-600606-S33557195542014022400000) . OK The sensor bolt should be tightened to the specified torque. The sensor should not be tilted. NG --> See step 6 OK: Go to next step
  4. REPLACE YAW RATE SENSOR Replace the yaw rate sensor. Refer to «REMOVAL [03/2012 - ]»(ref-600606-S13756556792014022400000) . NOTE: Check the yaw rate sensor signal after replacement. Refer to «TEST MODE PROCEDURE [03/2012 - ]»(ref-600441-S00576269522014022400000) . NEXT: Go to next step
  5. RECONFIRM DTC Clear the DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600441-S41685570292014022400000) . Turn the power switch on (READY). Drive the vehicle at a speed of 30 km/h (18 mph) or more, turn the steering wheel, and decelerate (depress the brake pedal) the vehicle. Check if the same DTC is recorded. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600441-S41685570292014022400000) . Result Result Proceed to DTCs (C1210/36 and/or C1336/98) are output A DTCs (C1210/36 and C1336/98) are not output B B --> END A --> See step 7
  6. INSTALL YAW RATE SENSOR CORRECTLY. Refer to «INSTALLATION [03/2012 - ]»(ref-600606-S33557195542014022400000)
  7. REPLACE SKID CONTROL ECU ASSEMBLY. Refer to «REMOVAL [03/2012 - ]»(ref-600606-S38751024972014022400000)
  1. CHECK DTC Check that no speed sensor malfunction DTC is output. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600441-S41685570292014022400000) . HINT: When C1464/31, C1465/32, C1466/33 and/or C1467/34 are output together with C1235/35, C1236/36, C1238/38, and/or C1239/39, inspect and repair the trouble areas indicated by C1464/31, C1465/32, C1466/33 and/or C1467/34 first. Result Result Proceed to DTCs (C1238/38 and/or C1239/39) are output A DTCs (C1235/35 and/or C1236/36) are output B Speed sensor malfunction DTCs (C1464/31, C1465/32, C1466/33 and/or C1467/34) are output C B --> See step 11 C --> See step 19 A: Go to next step
  2. CHECK REAR SPEED SENSOR TIP See step 6 NG --> CLEAN OR REPLACE REAR SPEED SENSOR OK: Go to next step
  3. CHECK REAR SPEED SENSOR ROTOR See step 7 NG --> CLEAN OR REPLACE REAR SPEED SENSOR ROTOR OK: Go to next step
  4. CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU ASSEMBLY - REAR SPEED SENSOR) See step 8 NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  5. INSPECT SKID CONTROL ECU ASSEMBLY (SENSOR OUTPUT) See step 9 NG --> See step 17 OK: Go to next step
  6. RECONFIRM DTC Turn the power switch off. Reconnect the rear speed sensor connector. Clear the DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600441-S41685570292014022400000) . Turn the power switch on (READY). Drive the vehicle at a speed of 20 km/h (12 mph) or more for at least 15 seconds. Check if the same DTC is output. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600441-S41685570292014022400000) . Result Result Proceed to DTCs (C1238/38 and/or C1239/39) are output A DTCs (C1238/38 and C1239/39) are not output B B --> See step 18 A: Go to next step
  7. REPLACE REAR SPEED SENSOR See step 11 NEXT: Go to next step
  8. RECONFIRM DTC Clear the DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600441-S41685570292014022400000) . Turn the power switch on (READY). Drive the vehicle at a speed of 20 km/h (12 mph) or more for at least 15 seconds. Check if the same DTC is output. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600441-S41685570292014022400000) . Result Result Proceed to DTCs (C1238/38 and/or C1239/39) are output A DTCs (C1238/38 and C1239/39) are not output B B --> END A: Go to next step
  9. REPLACE REAR SPEED SENSOR ROTOR See step 13 NEXT: Go to next step
  10. RECONFIRM DTC Clear the DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600441-S41685570292014022400000) . Turn the power switch on (READY). Drive the vehicle at a speed of 20 km/h (12 mph) or more for at least 15 seconds. Check if the same DTC is output. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600441-S41685570292014022400000) . Result Result Proceed to DTCs (C1238/38 and/or C1239/39) are output A DTCs (C1238/38 and C1239/39) are not output B B --> END A --> See step 17
  11. CHECK HARNESS AND CONNECTOR (SKID CONTROL SENSOR WIRE) See step 6 NG --> See step 20 OK: Go to next step
  12. CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU ASSEMBLY - FRONT SPEED SENSOR) See step 7 NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  13. INSPECT SKID CONTROL ECU ASSEMBLY (SENSOR OUTPUT) See step 8 NG --> See step 17 OK: Go to next step
  14. RECONFIRM DTC Turn the power switch off. Reconnect the front speed sensor connector. Clear the DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600441-S41685570292014022400000) . Turn the power switch on (READY). Drive the vehicle at a speed of 20 km/h (12 mph) or more for at least 15 seconds. Check if the same DTC is output. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600441-S41685570292014022400000) . Result Result Proceed to DTCs (C1235/35 and/or C1236/36) are output A DTCs (C1235/35 and C1236/36) are not output B B --> See step 18 A: Go to next step
  15. REPLACE FRONT SPEED SENSOR AND FRONT SPEED SENSOR ROTOR See step 10 NEXT: Go to next step
  16. RECONFIRM DTC Clear the DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600441-S41685570292014022400000) . Turn the power switch on (READY). Drive the vehicle at a speed of 20 km/h (12 mph) or more for at least 15 seconds. Check if the same DTC is output. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600441-S41685570292014022400000) . Result Result Proceed to DTCs (C1235/35 and/or C1236/36) are output A DTCs (C1235/35 and C1236/36) are not output B B --> END A --> See step 17
  17. REPLACE SKID CONTROL ECU ASSEMBLY. Refer to «REMOVAL [03/2012 - ]»(ref-600606-S38751024972014022400000)
  18. CHECK FOR INTERMITTENT PROBLEMS. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [03/2012 - ]»(ref-600412-S12576599882014022400000)
  19. REPAIR CIRCUITS INDICATED BY OUTPUT DTCS. Refer to «DIAGNOSTIC TROUBLE CODE CHART [03/2012 - ]»(ref-600441-S14604054422014022400000)
  20. REPLACE SKID CONTROL SENSOR WIRE. Refer to «REMOVAL [03/2012 - ]»(ref-600606-S02467365332014022400000)
  1. CHECK PART NUMBER (YAW RATE SENSOR) Check that the proper yaw rate sensor is installed. OK Proper sensor is installed. NG --> See step 4 OK: Go to next step
  2. RECONFIRM DTC Clear the DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600441-S41685570292014022400000) . Check if the same DTC is recorded. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600441-S41685570292014022400000) . Result Result Proceed to DTC (C1240/95) is not output A DTC (C1240/95) is output B B --> See step 5 A --> See step 3
  3. CHECK FOR INTERMITTENT PROBLEMS. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [03/2012 - ]»(ref-600412-S12576599882014022400000)
  4. REPLACE YAW RATE SENSOR. Refer to «REMOVAL [03/2012 - ]»(ref-600606-S13756556792014022400000)
  5. REPLACE SKID CONTROL ECU ASSEMBLY. Refer to «REMOVAL [03/2012 - ]»(ref-600606-S38751024972014022400000)
  1. CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU ASSEMBLY - BRAKE ACTUATOR ASSEMBLY) Make sure that there is no looseness at the locking part and the connecting part of the connectors. Disconnect the A14 and A16 skid control ECU assembly connectors and the A12 brake actuator assembly connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition A14-27 (VCM) - A12-35 (VCM) Always Below 1 ohms A14-27 (VCM) - Body ground Always 10 kohms or higher A14-26 (PAC1) - A12-46 (PAC1) Always Below 1 ohms A14-26 (PAC1) - Body ground Always 10 kohms or higher A14-14 (PMC1) - A12-38 (PMC1) Always Below 1 ohms A14-14 (PMC1) - Body ground Always 10 kohms or higher A14-44 (PFR) - A12-34 (PFR) Always Below 1 ohms A14-44 (PFR) - Body ground Always 10 kohms or higher A14-42 (PRL) - A12-36 (PRL) Always Below 1 ohms A14-42 (PRL) - Body ground Always 10 kohms or higher A14-28 (E) - A12-45 (E) Always Below 1 ohms A14-28 (E) - Body ground Always 10 kohms or higher A14-9 (PCK1) - A12-37 (PCK1) Always Below 1 ohms A14-9 (PCK1) - Body ground Always 10 kohms or higher A16-28 (VCM2) - A12-40 (VCM2) Always Below 1 ohms A16-28 (VCM2) - Body ground Always 10 kohms or higher A16-14 (PMC2) - A12-43 (PMC2) Always Below 1 ohms A16-14 (PMC2) - Body ground Always 10 kohms or higher A16-45 (PFL) - A12-39 (PFL) Always Below 1 ohms A16-45 (PFL) - Body ground Always 10 kohms or higher A16-43 (PRR) - A12-41 (PRR) Always Below 1 ohms A16-43 (PRR) - Body ground Always 10 kohms or higher A16-44 (E2) - A12-44 (E2) Always Below 1 ohms A16-44 (E2) - Body ground Always 10 kohms or higher A16-7 (PCK2) - A12-42 (PCK2) Always Below 1 ohms A16-7 (PCK2) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  2. READ VALUE USING TECHSTREAM (MASTER CYLINDER PRESSURE SENSOR) Reconnect the skid control ECU assembly connectors and the brake actuator assembly connector. Connect the Techstream to the DLC3. Turn the power switch on (IG). Select the Data List on the Techstream. Refer to «DATA LIST / ACTIVE TEST [03/2012 - ]»(ref-600441-S00637717752014022400000) . ABS/VSC/TRAC Tester Display Measurement Item/Range Normal Condition Diagnostic Note Master Cylinder Sensor Master cylinder pressure sensor 1 / Min.: 0.00 V, Max.: 5.00 V When brake pedal is released: 0.3 to 0.7 V Reading increases when brake pedal is depressed Master Cylinder Sensor2 Master cylinder pressure sensor 2 / Min.: 0.00 V, Max.: 5.00 V When brake pedal is released: 0.3 to 0.7 V Reading increases when brake pedal is depressed ECB* Solenoid (SMC1) Master cut solenoid (SMC1) / ON or OFF ON: Operating OFF: Not operating - ECB* Solenoid (SMC2) Master cut solenoid (SMC2) / ON or OFF ON: Operating OFF: Not operating - *: Electronically Controlled Brake System Check the output value of the master cylinder pressure sensor as the brake pedal is depressed. OK Output voltage is proportional to pedal stroke, and there is not a large difference in output between sensor 1 and sensor 2. HINT: If DTCs are stored due to the brake pedal being depressed, and electronically controlled brake system control is prohibited, check the Freeze Frame Data recorded at the time the DTCs were stored. If the Freeze Frame Data shows that there are no abnormalities in the output of the master cylinder pressure sensors and no difference in the output between sensor 1 and sensor 2, proceed to the next step. NG --> See step 7 OK: Go to next step
  3. READ VALUE USING TECHSTREAM (WHEEL CYLINDER PRESSURE SENSOR) Turn the power switch off. Install a hydro LSPV gauge and bleed air. Refer to «ON-VEHICLE INSPECTION [03/2012 - ] - Step 2»(ref-600606-S40849613872014022400000) . SST: 09709-29018 Turn the power switch on (IG). Select the Data List on the Techstream. Refer to «DATA LIST / ACTIVE TEST [03/2012 - ]»(ref-600441-S00637717752014022400000) . ABS/VSC/TRAC Tester Display Measurement Item/Range Normal Condition Diagnostic Note FR W/C Sensor Front wheel cylinder pressure sensor RH / Min.: 0.00 V, Max.: 5.00 V When brake pedal is released: 0.3 to 0.7 V Reading increases when brake pedal is depressed FL W/C Sensor Front wheel cylinder pressure sensor LH / Min.: 0.00 V, Max.: 5.00 V When brake pedal is released: 0.3 to 0.7 V Reading increases when brake pedal is depressed RR W/C Sensor Rear wheel cylinder pressure sensor RH / Min.: 0.00 V, Max.: 5.00 V When brake pedal is released: 0.3 to 0.7 V Reading increases when brake pedal is depressed RL W/C Sensor Rear wheel cylinder pressure sensor LH / Min.: 0.00 V, Max.: 5.00 V When brake pedal is released: 0.3 to 0.7 V Reading increases when brake pedal is depressed Check the output value of the wheel cylinder pressure sensor at each hydraulic pressure during electronically controlled brake system control. Standard Voltage Front Wheel Cylinder Pressure Sensor: for 17 inch Front Disc Brake Front Wheel Cylinder Pressure Sensor: for 18 inch Front Disc Brake Rear Wheel Cylinder Pressure Sensor: for 17 inch Front Disc Brake Rear Wheel Cylinder Pressure Sensor: for 18 inch Front Disc Brake Hydraulic Pressure MPa (kgf/cm 2 , psi) FR W/C Sensor (Data List Display) FL W/C Sensor (Data List Display) 3.84 (39.2, 557) 1.08 to 1.48 V 1.08 to 1.48 V 5.29 (53.9, 767) 1.38 to 1.78 V 1.38 to 1.78 V Hydraulic Pressure MPa (kgf/cm 2 , psi) FR W/C Sensor (Data List Display) FL W/C Sensor (Data List Display) 3.25 (33.1, 471) 0.96 to 1.36 V 0.96 to 1.36 V 4.85 (49.5, 703) 1.29 to 1.69 V 1.29 to 1.69 V Hydraulic Pressure MPa (kgf/cm 2 , psi) RR W/C Sensor (Data List Display) RL W/C Sensor (Data List Display) 3.84 (39.2, 557) 1.08 to 1.48 V 1.08 to 1.48 V 5.29 (53.9, 767) 1.38 to 1.78 V 1.38 to 1.78 V Hydraulic Pressure MPa (kgf/cm 2 , psi) RR W/C Sensor (Data List Display) RL W/C Sensor (Data List Display) 3.25 (33.1, 471) 0.96 to 1.36 V 0.96 to 1.36 V 4.85 (49.5, 703) 1.29 to 1.69 V 1.29 to 1.69 V HINT: If DTCs are stored due to the brake pedal being depressed, and electronically controlled brake system control is prohibited, check the Freeze Frame Data recorded at the time the DTCs were stored. If the Freeze Frame Data shows that there are no abnormalities in the output of the master cylinder pressure sensors and no difference in the output between sensor 1 and sensor 2, proceed to the next step. NG --> See step 7 OK: Go to next step
  4. RECONFIRM DTC Turn the power switch off. Clear the DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600441-S41685570292014022400000) . Perform a road test. Check if the same DTC is recorded. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600441-S41685570292014022400000) . Result Result Proceed to DTCs (C1246/46 and/or C1364/61) are output A DTCs (C1246/46 and C1364/61) are not output B B --> See step 8 A: Go to next step
  5. CHECK FREEZE FRAME DATA Check the INF code from the Freeze Frame Data memorized when the DTC (C1246/46 and/or C1364/61) is stored. Refer to «FREEZE FRAME DATA [03/2012 - ]»(ref-600441-S23556123262014022400000) . Result Result Proceed to INF code (sensor power supply malfunction) is output A INF code (sensor output malfunction) is output B B --> See step 7 A --> See step 6
  6. REPLACE SKID CONTROL ECU ASSEMBLY. Refer to «REMOVAL [03/2012 - ]»(ref-600606-S38751024972014022400000)
  7. REPLACE BRAKE ACTUATOR ASSEMBLY. Refer to «REMOVAL [03/2012 - ]»(ref-600606-S31889128972014022400000)
  8. CHECK FOR INTERMITTENT PROBLEMS. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [03/2012 - ]»(ref-600412-S12576599882014022400000)
  1. CHECK STOP LIGHT OPERATION Check that the stop lights come on when the brake pedal is depressed, and go off when the brake pedal is released. OK Condition Illumination Condition Brake pedal depressed ON Brake pedal released OFF NG --> See step 5 OK: Go to next step
  2. CHECK HARNESS AND CONNECTOR (STP TERMINAL) See step 10 NG --> See step 7 OK: Go to next step
  3. INSPECT NO. 2 INTEGRATION RELAY Remove the No. 2 integration relay. Refer to «REMOVAL [03/2012 - ]»(ref-600595-S15318216412014022400000) . Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 1A-11 (STP0) - 1A-22 (GNDA) Always 3 kohms or less 1A-11 (STP0) - 1B-10 (GNDB) Always 3 kohms or less TEXT IN ILLUSTRATION *a Component without harness connected (No. 2 Integration Relay) NG --> See step 10 OK: Go to next step
  4. RECONFIRM DTC Install the No. 2 integration relay. Refer to «INSTALLATION [03/2012 - ]»(ref-600595-S19538045142014022400000) . Reconnect the skid control ECU assembly connector. Turn the power switch off. Clear the DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600441-S41685570292014022400000) . Turn the power switch on (READY). Depress the brake pedal several times to test the stop light circuit. Check if the same DTC is recorded. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600441-S41685570292014022400000) . Result Result Proceed to DTC (C1249/49) is not output A DTC (C1249/49) is output B B --> See step 8 A --> See step 9
  5. CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU ASSEMBLY - STOP LIGHT SWITCH) See step 7 NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  6. INSPECT NO. 2 INTEGRATION RELAY Reconnect the No. 2 integration relay connector. Disconnect the A16 skid control ECU assembly connector. Check that the stop lights come on when the brake pedal is depressed, and go off when the brake pedal is released. OK Condition Illumination Condition Brake pedal depressed ON Brake pedal released OFF NG --> See step 10 OK --> See step 8
  7. CHECK HARNESS AND CONNECTOR (NO. 2 INTEGRATION RELAY - SKID CONTROL ECU ASSEMBLY) See step 13 NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 10
  8. REPLACE SKID CONTROL ECU ASSEMBLY. Refer to «REMOVAL [03/2012 - ]»(ref-600606-S38751024972014022400000)
  9. CHECK FOR INTERMITTENT PROBLEMS. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [03/2012 - ]»(ref-600412-S12576599882014022400000)
  10. REPLACE NO. 2 INTEGRATION RELAY. Refer to «REMOVAL [03/2012 - ]»(ref-600595-S15318216412014022400000)
  1. BRAKE PROBLEM CHECK Ask the customer if frequent braking was performed while the brake warning light / yellow (minor malfunction) was on. OK Result Proceed to Frequent braking was not performed A Frequent braking was performed B HINT: This DTC is output even if the accumulator pressure drops only temporarily due to frequent braking. B --> END A: Go to next step
  2. INSPECT BRAKE ACTUATOR ASSEMBLY See step 2 NG --> See step 4 OK: Go to next step
  3. READ VALUE USING TECHSTREAM (ACCUMULATOR PRESSURE SENSOR) Reconnect the brake actuator assembly connector. Connect the Techstream to the DLC3. Turn the power switch on (IG). Select the Data List on the Techstream. Refer to «DATA LIST / ACTIVE TEST [03/2012 - ]»(ref-600441-S00637717752014022400000) . ABS/VSC/TRAC Tester Display Measurement Item/Range Normal Condition Diagnostic Note Accumulator Sensor Accumulator pressure sensor / Min.: 0.00 V, Max.: 5.00 V Specified value: 2.6 to 3.8 V When brake fluid is stored in the accumulator: Accumulator pressure changes in accordance with volume of fluid stored in the accumulator Depress the brake pedal 4 or 5 times to operate the pump motor. Wait for 30 seconds without depressing the brake pedal. Check that the accumulator pressure sensor output value change is within the specified range. OK Accumulator pressure sensor output value change is less than 0.2 V. NG --> See step 4 OK --> See step 5
  4. REPLACE BRAKE ACTUATOR ASSEMBLY. Refer to «REMOVAL [03/2012 - ]»(ref-600606-S31889128972014022400000)
  5. CHECK FOR INTERMITTENT PROBLEMS. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [03/2012 - ]»(ref-600412-S12576599882014022400000)
  1. CHECK HYBRID CONTROL SYSTEM Check if the hybrid control system DTC is output. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600583-S31071724722014022400000) . Result Result Proceed to DTC is not output A DTC is output B B --> See step 3 A --> See step 2
  2. REPLACE POWER MANAGEMENT CONTROL ECU. Refer to «REMOVAL [03/2012 - ]»(ref-600595-S22014970062014022400000)
  3. INSPECT HYBRID CONTROL SYSTEM. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [03/2012 - ]»(ref-600583-S29316758402014022400000)
  1. PERFORM ZERO POINT CALIBRATION OF YAW RATE AND ACCELERATION SENSOR Perform zero point calibration of the yaw rate and acceleration sensor. Refer to «CALIBRATION [03/2012 - ]»(ref-600441-S38783757642014022400000) . HINT: When the stored zero point of the yaw rate and acceleration sensor is cleared, steering sensor zero point will also be cleared. If the zero point and output value of the yaw rate and acceleration sensor and the output value of the speed sensors are not normal, steering sensor zero point cannot be acquired normally even if the vehicle is driven straight ahead at 35 km/h (22 mph) or more. NEXT: Go to next step
  2. CHECK STEERING SENSOR ZERO POINT CALIBRATION Turn the power switch off. Turn the power switch on (READY). Drive the vehicle straight ahead at 35 km/h (22 mph) or more for at least 5 seconds. Check that the centered position of the steering wheel is correctly set while driving straight ahead. HINT: If front wheel alignment and steering position are adjusted as a result of an off-centered position of the steering wheel, acquire yaw rate and acceleration sensor zero point again after the adjustments are completed. OK The centered position of the steering wheel is correctly set. NG --> See step 4 OK: Go to next step
  3. RECONFIRM DTC Turn the power switch off. Clear the DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600441-S41685570292014022400000) . Turn the power switch on (READY). Drive the vehicle at a speed of 35 km/h (22 mph) or more and turn the steering wheel to the right and left. Check if the same DTC is recorded. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600441-S41685570292014022400000) . Result Result Proceed to DTC (C1290/66) is not output A DTC (C1290/66) is output B B --> See step 5 A --> END
  4. ADJUST FRONT WHEEL ALIGNMENT OR STEERING POSITION. Refer to «ADJUSTMENT [03/2012 - ]»(ref-600576-S35749324442014022400000)
  5. REPLACE SKID CONTROL ECU ASSEMBLY. Refer to «REMOVAL [03/2012 - ]»(ref-600606-S38751024972014022400000)
  1. REPLACE SKID CONTROL ECU ASSEMBLY Replace the skid control ECU assembly. Refer to «REMOVAL [03/2012 - ]»(ref-600606-S38751024972014022400000) . Perform initialization and calibration of the linear solenoid valve. Refer to «INITIALIZATION [03/2012 - ]»(ref-600441-S22422215162014022400000) . Perform the zero point calibration of the yaw rate and acceleration sensor. Refer to «CALIBRATION [03/2012 - ]»(ref-600441-S38783757642014022400000) . Perform the sensor check in the Test Mode procedure. Refer to «TEST MODE PROCEDURE [03/2012 - ]»(ref-600441-S00576269522014022400000) . NEXT --> END
  1. CHECK FOR FLUID LEAK Check that there is no fluid leakage in the brake line between the brake actuator assembly and the wheel cylinder which is indicated by DTCs. Check that the brake is not dragging. OK There is no fluid leakage or dragging. NG --> REPAIR OR REPLACE APPLICABLE PART OK: Go to next step
  2. PERFORM AIR BLEEDING Bleed the air from the front and rear brake systems. Refer to «BLEEDING [03/2012 - ]»(ref-600567-S29611316022014022400000) . NEXT: Go to next step
  3. CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU ASSEMBLY - BODY GROUND) Make sure that there is no looseness at the locking part and the connecting part of the connectors. Disconnect the A14 and A16 skid control ECU assembly connectors and the A12 brake actuator assembly connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition A14-28 (E) - Body ground Always 10 kohms or higher A14-27 (VCM) - Body ground Always 10 kohms or higher A14-42 (PRL) - Body ground Always 10 kohms or higher A14-26 (PAC1) - Body ground Always 10 kohms or higher A14-14 (PMC1) - Body ground Always 10 kohms or higher A14-9 (PCK1) - Body ground Always 10 kohms or higher A14-44 (PFR) - Body ground Always 10 kohms or higher A16-44 (E2) - Body ground Always 10 kohms or higher A16-28 (VCM2) - Body ground Always 10 kohms or higher A16-45 (PFL) - Body ground Always 10 kohms or higher A16-43 (PRR) - Body ground Always 10 kohms or higher A16-14 (PMC2) - Body ground Always 10 kohms or higher A16-7 (PCK2) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  4. READ VALUE USING TECHSTREAM (WHEEL CYLINDER PRESSURE SENSOR) Reconnect the skid control ECU assembly connectors and the brake actuator assembly connector. Connect a pedal effort gauge. Refer to «ON-VEHICLE INSPECTION [03/2012 - ] - Step 2»(ref-600606-S40849613872014022400000) . Connect the Techstream to the DLC3. Turn the power switch on (IG). Select the Data List on the Techstream. Refer to «DATA LIST / ACTIVE TEST [03/2012 - ]»(ref-600441-S00637717752014022400000) . ABS/VSC/TRAC Tester Display Measurement Item/Range Normal Condition Diagnostic Note FR W/C Sensor Front wheel cylinder pressure sensor RH / Min.: 0.00 V, Max.: 5.00 V When brake pedal is released: 0.3 to 0.7 V Reading increases when brake pedal is depressed FL W/C Sensor Front wheel cylinder pressure sensor LH / Min.: 0.00 V, Max.: 5.00 V When brake pedal is released: 0.3 to 0.7 V Reading increases when brake pedal is depressed RR W/C Sensor Rear wheel cylinder pressure sensor RH / Min.: 0.00 V, Max.: 5.00 V When brake pedal is released: 0.3 to 0.7 V Reading increases when brake pedal is depressed RL W/C Sensor Rear wheel cylinder pressure sensor LH / Min.: 0.00 V, Max.: 5.00 V When brake pedal is released: 0.3 to 0.7 V Reading increases when brake pedal is depressed Check the output value of the wheel cylinder pressure sensor at each hydraulic pressure level during the electronically controlled brake system control. Standard Voltage Front Wheel Cylinder Pressure Sensor: for 17 inch Front Disc Brake Front Wheel Cylinder Pressure Sensor: for 18 inch Front Disc Brake Rear Wheel Cylinder Pressure Sensor: for 17 inch Front Disc Brake Rear Wheel Cylinder Pressure Sensor: for 18 inch Front Disc Brake Hydraulic Pressure MPa (kgf/cm 2 , psi) FR W/C Sensor (Data List Display) FL W/C Sensor (Data List Display) 3.84 (39.2, 557) 1.08 to 1.48 V 1.08 to 1.48 V 5.29 (53.9, 767) 1.38 to 1.78 V 1.38 to 1.78 V Hydraulic Pressure MPa (kgf/cm 2 , psi) FR W/C Sensor (Data List Display) FL W/C Sensor (Data List Display) 3.25 (33.1, 471) 0.96 to 1.36 V 0.96 to 1.36 V 4.85 (49.5, 703) 1.29 to 1.69 V 1.29 to 1.69 V Hydraulic Pressure MPa (kgf/cm 2 , psi) RR W/C Sensor (Data List Display) RL W/C Sensor (Data List Display) 3.84 (39.2, 557) 1.08 to 1.48 V 1.08 to 1.48 V 5.29 (53.9, 767) 1.38 to 1.78 V 1.38 to 1.78 V Hydraulic Pressure MPa (kgf/cm 2 , psi) RR W/C Sensor (Data List Display) RL W/C Sensor (Data List Display) 3.25 (33.1, 471) 0.96 to 1.36 V 0.96 to 1.36 V 4.85 (49.5, 703) 1.29 to 1.69 V 1.29 to 1.69 V NG --> See step 8 OK: Go to next step
  5. CHECK BRAKE DISC Turn the power switch off. Disconnect the brake pedal stroke sensor assembly connector. Perform a road test according to Freeze Frame Data or customer problem analysis. Check for brake line pressure vibration caused due to uneven wear of the disc according to brake pedal vibration. OK The brake pedal does not vibrate during braking. HINT: The brake pedal does not kick back due to wheel cylinder piston vibration during electronically controlled brake system control. If the brake pedal stroke sensor connector is disconnected, the fail-safe function will prohibit electronically controlled brake system control. The Active Test does not prohibit electronically controlled brake system control when the vehicle is driving, so disconnect the stroke sensor connector before continuing with inspection. Disc wear can be checked by measuring the disc thickness. Refer to «INSPECTION [03/2012 - ]»(ref-600569-S08531616642014022400000) for 17 inch Front Disc Brake. Refer to «INSPECTION [03/2012 - ]»(ref-600569-S35848272362014022400000) for 18 inch Front Disc Brake or refer to «INSPECTION [03/2012 - ]»(ref-600570-S20176446952014022400000) for rear). NG --> REPLACE BRAKE DISC OK: Go to next step
  6. RECONFIRM DTC Reconnect the brake pedal stroke sensor assembly connector. Clear the DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600441-S41685570292014022400000) . Perform a road test under the same malfunction conditions recreated based on the Freeze Frame Data or customer problem analysis. Check if the same DTC is recorded. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600441-S41685570292014022400000) . Result Result Proceed to DTCs (C1341/62, C1342/63, C1343/64 and C1344/65) are not output A DTCs (C1341/62, C1342/63, C1343/64 and/or C1344/65) are output B B --> See step 8 A --> See step 7
  7. CHECK FOR INTERMITTENT PROBLEMS. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [03/2012 - ]»(ref-600412-S12576599882014022400000)
  8. REPLACE BRAKE ACTUATOR ASSEMBLY. Refer to «REMOVAL [03/2012 - ]»(ref-600606-S31889128972014022400000)
  1. CHECK DTC Clear the DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600441-S41685570292014022400000) . Turn the power switch off. Turn the power switch on (IG). Check that the DTCs (electronically controlled brake system and hybrid control system) are recorded. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600441-S41685570292014022400000) for electronically controlled brake system or refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600583-S31071724722014022400000) for hybrid control system). Result Result Proceed to DTCs (except C1345/66, C1368/67 and hybrid control system DTC) are not output A Hybrid control system DTC is output B DTCs (except C1345/66 and/or C1368/67) are output C HINT: Before carrying out Perform Initialization and Calibration of the Linear Solenoid Valve, C1203/95 will be output. B --> See step 4 C --> See step 5 A: Go to next step
  2. PERFORM INITIALIZATION AND CALIBRATION OF LINEAR SOLENOID VALVE Turn the power switch off. Perform initialization and calibration of the linear solenoid valve. Refer to «INITIALIZATION [03/2012 - ]»(ref-600441-S22422215162014022400000) . NEXT: Go to next step
  3. RECONFIRM DTC Turn the power switch off. Clear the DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600441-S41685570292014022400000) . Turn the power switch on (IG). Check if the same DTC is recorded. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600441-S41685570292014022400000) . Result Result Proceed to DTCs (C1345/66 and C1368/67) are not output A DTCs (C1345/66 and/or C1368/67) are output B B --> See step 6 A --> END
  4. INSPECT HYBRID CONTROL SYSTEM. Refer to «DIAGNOSTIC TROUBLE CODE CHART [03/2012 - ]»(ref-600583-S36337690122014022400000)
  5. REPAIR CIRCUITS INDICATED BY OUTPUT DTCS. Refer to «DIAGNOSTIC TROUBLE CODE CHART [03/2012 - ]»(ref-600441-S14604054422014022400000)
  6. REPLACE BRAKE ACTUATOR ASSEMBLY. Refer to «REMOVAL [03/2012 - ]»(ref-600606-S31889128972014022400000)
  1. CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU ASSEMBLY - BRAKE ACTUATOR ASSEMBLY) Make sure that there is no looseness at the locking part and the connecting part of the connectors. Disconnect the A14 skid control ECU assembly connector and the A12 brake actuator assembly connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition A14-28 (E) - A12-45 (E) Always Below 1 ohms A14-28 (E) - Body ground Always 10 kohms or higher A14-27 (VCM) - A12-35 (VCM) Always Below 1 ohms A14-27 (VCM) - Body ground Always 10 kohms or higher A14-26 (PAC1) - A12-46 (PAC1) Always Below 1 ohms A14-26 (PAC1) - Body ground Always 10 kohms or higher A14-9 (PCK1) - A12-37 (PCK1) Always Below 1 ohms A14-9 (PCK1) -Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  2. RECONFIRM DTC Reconnect the skid control ECU assembly connector and the brake actuator assembly connector. Clear the DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600441-S41685570292014022400000) . Perform a road test. Check if the same DTC is output. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600441-S41685570292014022400000) . Result Result Proceed to DTC (C1365/54) is output A DTC (C1365/54) is not output B B --> See step 6 A: Go to next step
  3. CHECK FREEZE FRAME DATA Check the INF code from the Freeze Frame Data memorized when the DTC (C1365/54) is stored. Refer to «FREEZE FRAME DATA [03/2012 - ]»(ref-600441-S23556123262014022400000) . Result Result Proceed to INF code 211 is output A INF code 212, 214 and/or 215 is output B B --> See step 5 A --> See step 4
  4. REPLACE SKID CONTROL ECU ASSEMBLY. Refer to «REMOVAL [03/2012 - ]»(ref-600606-S38751024972014022400000)
  5. REPLACE BRAKE ACTUATOR ASSEMBLY. Refer to «REMOVAL [03/2012 - ]»(ref-600606-S31889128972014022400000)
  6. CHECK FOR INTERMITTENT PROBLEMS. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [03/2012 - ]»(ref-600412-S12576599882014022400000)
  1. CHECK HARNESS AND CONNECTOR (IG1 TERMINAL) Make sure that there is no looseness at the locking part and the connecting part of the connector. Disconnect the brake control power supply assembly connector. Turn the power switch on (IG). Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition X1-5 (IG1) - Body ground Power switch on (IG) 11 to 14 V TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Brake Control Power Supply Assembly) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (IG1 CIRCUIT) OK: Go to next step
  2. CHECK HARNESS AND CONNECTOR (GND TERMINAL) Turn the power switch off. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition X1-14 (GND) - Body ground Always Below 1 ohms TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Brake Control Power Supply Assembly) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (GND CIRCUIT) OK: Go to next step
  3. CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU ASSEMBLY - BRAKE CONTROL POWER SUPPLY ASSEMBLY) Make sure that there is no looseness at the locking part and the connecting part of the connectors. Disconnect the A14 and A16 skid control ECU assembly connectors. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition A14-8 (ENA) - X1-12 (ENA) Always Below 1 ohms A14-8 (ENA) - Body ground Always 10 kohms or higher A16-41 (FAIL) - X1-13 (FAIL) Always Below 1 ohms A16-41 (FAIL) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  4. RECONFIRM DTC Reconnect the skid control ECU assembly connectors and the brake control power supply assembly connector. Clear the DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600441-S41685570292014022400000) . Turn the power switch on (IG). Check if the same DTC is recorded. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600441-S41685570292014022400000) . Result Result Proceed to DTC (C1378/44) is output A DTC (C1378/44) is not output B B --> See step 6 A: Go to next step
  5. CHECK FREEZE FRAME DATA Check the INF code from the Freeze Frame Data memorized when the DTC (C1378/44) is stored. Refer to «FREEZE FRAME DATA [03/2012 - ]»(ref-600441-S23556123262014022400000) . Result Result Proceed to INF code (112) is not output A INF code (112) is output B B --> See step 8 A --> See step 7
  6. CHECK FOR INTERMITTENT PROBLEMS. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [03/2012 - ]»(ref-600412-S12576599882014022400000)
  7. REPLACE SKID CONTROL ECU ASSEMBLY. Refer to «REMOVAL [03/2012 - ]»(ref-600606-S38751024972014022400000)
  8. REPLACE BRAKE CONTROL POWER SUPPLY ASSEMBLY. Refer to «REMOVAL [03/2012 - ]»(ref-600606-S19284002652014022400000)
  1. CHECK FOR FLUID LEAK Check that there is no fluid leakage in the brake line between the brake actuator assembly and the wheel cylinder which is indicated by DTCs. Check that the brake is not dragging. OK There is no fluid leakage or dragging. NG --> REPAIR OR REPLACE APPLICABLE PART OK: Go to next step
  2. PERFORM ACTIVE TEST USING TECHSTREAM (ACCUMULATOR PRESSURE SENSOR) Connect the Techstream to the DLC3. Turn the power switch on (IG). Select the Data List on the Techstream. Refer to «DATA LIST / ACTIVE TEST [03/2012 - ]»(ref-600441-S00637717752014022400000) . ABS/VSC/TRAC Tester Display Measurement Item/Range Normal Condition Diagnostic Note Accumulator Sensor Accumulator pressure sensor / Min.: 0.00 V, Max.: 5.00 V Specified value: 2.6 to 3.8 V When brake fluid is stored in the accumulator: Accumulator pressure changes in accordance with volume of fluid stored in the accumulator Wait a few minutes without operating the brake pedal. Check that the output value of the accumulator pressure sensor does not decrease and that the pump motor is not activated due to a decrease in accumulator pressure. OK Accumulator pressure does not decrease and the pump motor is not activated due to a decrease in accumulator pressure. NG --> See step 5 OK: Go to next step
  3. RECONFIRM DTC Clear the DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600441-S41685570292014022400000) . Turn the power switch on (READY). Check if the same DTC is recorded. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600441-S41685570292014022400000) . Result Result Proceed to DTC (C1391/69) is output A DTC (C1391/69) is not output B B --> See step 6 A --> See step 4
  4. CHECK FOR INTERMITTENT PROBLEMS. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [03/2012 - ]»(ref-600412-S12576599882014022400000)
  5. REPLACE BRAKE ACTUATOR ASSEMBLY. Refer to «REMOVAL [03/2012 - ]»(ref-600606-S31889128972014022400000)
  6. REPLACE SKID CONTROL ECU ASSEMBLY. Refer to «REMOVAL [03/2012 - ]»(ref-600606-S38751024972014022400000)
  1. CHECK DTC FOR ELECTRIC PARKING BRAKE SYSTEM Check for electric parking brake system DTCs and record any codes that are output. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600442-S15625206362014022400000) . NEXT --> See step 2
  2. INSPECT ELECTRIC PARKING BRAKE SYSTEM. Refer to «DIAGNOSTIC TROUBLE CODE CHART [03/2012 - ]»(ref-600442-S34571633122014022400000)
  1. CHECK HARNESS AND CONNECTOR (MOMENTARY INTERRUPTION) Using the Techstream, check for any momentary interruption in the wire harness and connector corresponding to the DTC. Refer to «CHECK FOR INTERMITTENT PROBLEMS [03/2012 - ]»(ref-600441-S26759275802014022400000) . ABS/VSC/TRAC Tester Display Measurement Item/Range Normal Condition Diagnostic Note HV Communication Open Hybrid vehicle communication open detection / Error or Normal Error: Momentary interruption Normal: Normal - OK There are no momentary interruptions. HINT: Perform the above inspection before removing the sensor and connector. NG --> See step 3 OK: Go to next step
  2. RECONFIRM DTC Turn the power switch off. Clear the DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600441-S41685570292014022400000) . Turn the power switch on (READY). Drive the vehicle at a speed of 15 km/h (9 mph) or more for 10 seconds or more. Check that no CAN communication system DTC is output. Refer to «DIAGNOSIS SYSTEM [03/2012 - ]»(ref-600620-S06280412312014022400000) . Check if the same DTC is recorded. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600441-S41685570292014022400000) . Result Result Proceed to DTC (C1438/59) is not output A DTC (C1438/59) is output B DTC (CAN communication system DTC) is output C B --> See step 7 C --> See step 5 A --> See step 6
  3. REPAIR OR REPLACE HARNESS OR CONNECTOR (SKID CONTROL ECU ASSEMBLY - POWER MANAGEMENT CONTROL ECU) Turn the power switch off. Repair or replace the harness or connector. Check for any momentary interruption between the skid control ECU assembly and the power management control ECU. Refer to «CHECK FOR INTERMITTENT PROBLEMS [03/2012 - ]»(ref-600441-S26759275802014022400000) . Check that there is no momentary interruption. NEXT: Go to next step
  4. RECONFIRM DTC Turn the power switch off. Clear the DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600441-S41685570292014022400000) . Turn the power switch on (READY). Drive the vehicle at a speed of 15 km/h (9 mph) or more for 10 seconds or more. Check that no CAN communication system DTC is output. Refer to «DIAGNOSIS SYSTEM [03/2012 - ]»(ref-600620-S06280412312014022400000) . Check if the same DTC is recorded. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600441-S41685570292014022400000) . Result Result Proceed to DTC (C1438/59) is not output A DTC (C1438/59) is output B DTC (CAN communication system DTC) is output C B --> See step 7 C --> See step 5 A --> END
  5. INSPECT CAN COMMUNICATION SYSTEM. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [03/2012 - ]»(ref-600588-S38298476802014022400000)
  6. CHECK FOR INTERMITTENT PROBLEMS. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [03/2012 - ]»(ref-600412-S12576599882014022400000)
  7. REPLACE SKID CONTROL ECU ASSEMBLY. Refer to «REMOVAL [03/2012 - ]»(ref-600606-S38751024972014022400000)
  1. CHECK DTC Clear the DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600441-S41685570292014022400000) . Turn the power switch off. Turn the power switch on (IG) and check that no CAN communication system DTCs are output. Refer to «DIAGNOSIS SYSTEM [03/2012 - ]»(ref-600620-S06280412312014022400000) . Drive the vehicle at a speed of 35 km/h (22 mph) and turn the steering wheel to the right and left and check that no speed sensor, yaw rate sensor and steering sensor DTCs are output. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600441-S41685570292014022400000) . Result Result Proceed to DTCs (C1439/66 and/or C1445/66) are output A CAN communication system DTC is output B Speed sensor, yaw rate sensor and/or steering sensor DTC is output C DTCs (C1439/66 and C1445/66) are not output D HINT: If there is a malfunction in the speed sensor or the yaw rate sensor, an abnormal value may be output although the steering angle sensor is normal. If the speed sensor and the yaw rate sensor DTCs are output simultaneously, repair the sensors and inspect the steering angle sensor. If DTC C1439/66 and/or C1445/66 is not output again, the DTC may have been stored due to a temporary loss of the steering angle zero calibration, such as when the power source voltage drops. B --> See step 5 C --> See step 6 D --> See step 4 A: Go to next step
  2. CHECK STEERING SENSOR ZERO POINT CALIBRATION Drive the vehicle straight ahead at 35 km/h (22 mph) or more for at least 5 seconds. Check that the centered position of the steering wheel is correctly set while driving straight ahead. HINT: If the front wheel alignment and steering position are adjusted as a result of an off-centered position of the steering wheel, acquire yaw rate and acceleration sensor zero point again after the adjustments are completed. OK The centered position of the steering wheel is correctly set. NG --> See step 7 OK: Go to next step
  3. RECONFIRM DTC Turn the power switch off. Clear the DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600441-S41685570292014022400000) . Turn the power switch on (READY). Drive the vehicle at a speed of 35 km/h (22 mph) or more and turn the steering wheel to the right and left. Check if the same DTC is recorded. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600441-S41685570292014022400000) . Result Result Proceed to DTCs (C1439/66 and C1445/66) are not output A Yaw rate sensor and/or steering sensor DTC is output B HINT: If DTC C1439/66 and/or C1445/66 is not output again, the DTC may have been stored due to a temporary loss of the steering angle zero calibration, such as when the power source voltage drops. B --> See step 6 A --> END
  4. CHECK FOR INTERMITTENT PROBLEMS. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [03/2012 - ]»(ref-600412-S12576599882014022400000)
  5. INSPECT CAN COMMUNICATION SYSTEM. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [03/2012 - ]»(ref-600588-S38298476802014022400000)
  6. REPAIR CIRCUITS INDICATED BY OUTPUT DTCS. Refer to «DIAGNOSTIC TROUBLE CODE CHART [03/2012 - ]»(ref-600441-S14604054422014022400000)
  7. ADJUST FRONT WHEEL ALIGNMENT OR STEERING POSITION. Refer to «ADJUSTMENT [03/2012 - ]»(ref-600576-S35749324442014022400000)
  1. CHECK DTC Clear the DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600441-S41685570292014022400000) . Perform a road test. Check if the same DTC is recorded. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600441-S41685570292014022400000) . Result Result Proceed to DTC (C1440/98) is output A DTC (C1440/98) is not output B Yaw rate sensor DTC is output C B --> END C --> See step 3 A: Go to next step
  2. CLEAR DTC Clear the DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600441-S41685570292014022400000) . HINT: If the skid control ECU assembly determines that the vehicle is being driven at a steep bank angle, the skid control ECU assembly stores DTC C1440/98 while VSC operation is temporarily disabled. It is not a malfunction if the system and sensor circuits are normal and if the normal VSC operation resumes. NEXT --> END
  3. REPAIR CIRCUITS INDICATED BY OUTPUT DTCS. Refer to «DIAGNOSTIC TROUBLE CODE CHART [03/2012 - ]»(ref-600441-S14604054422014022400000)
  1. CHECK DTC Clear the DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600441-S41685570292014022400000) . Turn the power switch on (READY). Run the engine for 60 seconds, and then turn the power switch off. Check if the same DTC is recorded. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600441-S41685570292014022400000) . Result Result Proceed to DTCs (C1442/44 and/or C1443/34) are output A DTCs (C1442/44 and C1443/34) are not output B B --> See step 2 A --> See step 3
  2. CHECK FOR INTERMITTENT PROBLEMS. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [03/2012 - ]»(ref-600412-S12576599882014022400000)
  3. REPLACE YAW RATE SENSOR. Refer to «REMOVAL [03/2012 - ]»(ref-600606-S13756556792014022400000)
  1. RECONFIRM DTC Turn the power switch off. Clear the DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600441-S41685570292014022400000) . Turn the power switch on (READY). Drive the vehicle at a speed of 15 km/h (9 mph) or more and turn the steering wheel to the right and left. Check for DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600441-S41685570292014022400000) . Result Result Proceed to DTC is not output A DTC is output B HINT: If the CAN communication system DTC and the relevant sensor DTCs are output simultaneously, troubleshoot the relevant sensor DTCs (for ABS, VSC and/or electronically controlled brake system) after the CAN communication system returns to normal. B --> See step 2 A --> See step 3
  2. INSPECT CAN COMMUNICATION SYSTEM. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [03/2012 - ]»(ref-600588-S38298476802014022400000)
  3. CHECK FOR INTERMITTENT PROBLEMS. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [03/2012 - ]»(ref-600412-S12576599882014022400000)
  1. CHECK CAN COMMUNICATION SYSTEM See step 1 B --> See step 4 A: Go to next step
  2. CHECK ABS WARNING LIGHT Disconnect the skid control ECU assembly connectors. Turn the power switch on (IG). Check that the ABS warning light comes on. OK The ABS warning light comes on. HINT: If troubleshooting has been carried out according to Problem Symptoms Table, refer back to the table and proceed to the next step before replacing the part. Refer to «PROBLEM SYMPTOMS TABLE [03/2012 - ]»(ref-600441-S24114725172014022400000) . NG --> See step 3 OK --> See step 5
  3. INSPECT COMBINATION METER ASSEMBLY Turn the power switch off. Reconnect the skid control ECU assembly connectors. Perform the Active Test of the combination meter assembly (meter CPU) using the Techstream. Refer to «DATA LIST / ACTIVE TEST [03/2012 - ]»(ref-600424-S05000119232014022400000) . Check the combination meter assembly. OK The ABS warning light turns on or off in accordance with the Techstream operation. HINT: If troubleshooting has been carried out according to Problem Symptoms Table, refer back to the table and proceed to the next step. Refer to «PROBLEM SYMPTOMS TABLE [03/2012 - ]»(ref-600441-S24114725172014022400000) . NG --> See step 6 OK --> See step 5
  4. INSPECT CAN COMMUNICATION SYSTEM. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [03/2012 - ]»(ref-600588-S38298476802014022400000)
  5. REPLACE SKID CONTROL ECU ASSEMBLY. Refer to «REMOVAL [03/2012 - ]»(ref-600606-S38751024972014022400000)
  6. REPLACE COMBINATION METER ASSEMBLY. Refer to «REMOVAL [03/2012 - ]»(ref-600590-S40847194542014022400000)
  1. CHECK CAN COMMUNICATION SYSTEM See step 1 B --> See step 9 A: Go to next step
  2. CHECK DTC Check if ABS, VSC and/or electronically controlled brake system DTCs are output. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600441-S41685570292014022400000) . Result Result Proceed to DTC is not output A DTC is output B B --> See step 11 A: Go to next step
  3. CHECK IF SKID CONTROL ECU ASSEMBLY CONNECTOR IS SECURELY CONNECTED See step 2 NG --> CONNECT CONNECTOR TO ECU CORRECTLY OK: Go to next step
  4. CHECK AUXILIARY BATTERY See step 3 NG --> CHECK OR REPLACE CHARGING SYSTEM OR BATTERY OK: Go to next step
  5. CHECK HARNESS AND CONNECTOR (IG1 TERMINAL) See step 4 NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (IG1 CIRCUIT) OK: Go to next step
  6. CHECK HARNESS AND CONNECTOR (GND TERMINAL) See step 5 NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (GND CIRCUIT) OK: Go to next step
  7. INSPECT COMBINATION METER ASSEMBLY Reconnect the skid control ECU assembly connectors. Perform the Active Test of the combination meter assembly (meter CPU) using the Techstream. Refer to «DATA LIST / ACTIVE TEST [03/2012 - ]»(ref-600424-S05000119232014022400000) . Check the combination meter assembly. OK The brake warning light / red (malfunction) turns on or off in accordance with the Techstream operation. HINT: If troubleshooting has been carried out according to Problem Symptoms Table, refer back to the table and proceed to the next step before replacing the part. Refer to «PROBLEM SYMPTOMS TABLE [03/2012 - ]»(ref-600441-S24114725172014022400000) . NG --> See step 10 OK --> See step 8
  8. REPLACE SKID CONTROL ECU ASSEMBLY. Refer to «REMOVAL [03/2012 - ]»(ref-600606-S38751024972014022400000)
  9. INSPECT CAN COMMUNICATION SYSTEM. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [03/2012 - ]»(ref-600588-S38298476802014022400000)
  10. REPLACE COMBINATION METER ASSEMBLY. Refer to «REMOVAL [03/2012 - ]»(ref-600590-S40847194542014022400000)
  11. REPAIR CIRCUITS INDICATED BY OUTPUT DTCS. Refer to «DIAGNOSTIC TROUBLE CODE CHART [03/2012 - ]»(ref-600441-S14604054422014022400000)
  1. CHECK CAN COMMUNICATION SYSTEM See step 1 B --> See step 4 A: Go to next step
  2. CHECK BRAKE WARNING LIGHT / RED (MALFUNCTION) Disconnect the skid control ECU assembly connectors. Turn the power switch on (IG). Check that the brake warning light / red (malfunction) comes on. OK The brake warning light / red (malfunction) comes on. HINT: If troubleshooting has been carried out according to Problem Symptoms Table, refer back to the table and proceed to the next step before replacing the part. Refer to «PROBLEM SYMPTOMS TABLE [03/2012 - ]»(ref-600441-S24114725172014022400000) . NG --> See step 3 OK --> See step 5
  3. INSPECT COMBINATION METER ASSEMBLY Turn the power switch off. Reconnect the skid control ECU assembly connectors. Perform the Active Test of the combination meter assembly (meter CPU) using the Techstream. Refer to «DATA LIST / ACTIVE TEST [03/2012 - ]»(ref-600424-S05000119232014022400000) . Check the combination meter assembly. OK The brake warning light / red (malfunction) turns on or off in accordance with the Techstream operation. HINT: If troubleshooting has been carried out according to Problem Symptoms Table, refer back to the table and proceed to the next step. Refer to «PROBLEM SYMPTOMS TABLE [03/2012 - ]»(ref-600441-S24114725172014022400000) . NG --> See step 6 OK --> See step 5
  4. INSPECT CAN COMMUNICATION SYSTEM. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [03/2012 - ]»(ref-600588-S38298476802014022400000)
  5. REPLACE SKID CONTROL ECU ASSEMBLY. Refer to «REMOVAL [03/2012 - ]»(ref-600606-S38751024972014022400000)
  6. REPLACE COMBINATION METER ASSEMBLY. Refer to «REMOVAL [03/2012 - ]»(ref-600590-S40847194542014022400000)
  1. CHECK CAN COMMUNICATION SYSTEM See step 1 B --> See step 10 A: Go to next step
  2. CHECK IF SKID CONTROL ECU ASSEMBLY CONNECTOR IS SECURELY CONNECTED See step 2 NG --> CONNECT CONNECTOR TO ECU CORRECTLY OK: Go to next step
  3. CHECK AUXILIARY BATTERY See step 3 NG --> CHARGE OR REPLACE AUXILIARY BATTERY OK: Go to next step
  4. READ VALUE USING TECHSTREAM (VSC OFF SWITCH) Connect the Techstream to the DLC3. Turn the power switch on (IG). Select the Data List on the Techstream. Refer to «DATA LIST / ACTIVE TEST [03/2012 - ]»(ref-600441-S00637717752014022400000) . ABS/VSC/TRAC Tester Display Measurement Item/Range Normal Condition Diagnostic Note TRC(TRAC)/VSC OFF SW VSC OFF switch / ON or OFF ON: Switch on OFF: Switch off - TRAC/VSC Off Mode VSC OFF switch / Normal, TRC OFF, Unknown or VSC OFF Normal: Normal mode TRC OFF: TRAC off mode Unknown: Unspecified VSC OFF: VSC off mode - Using the Techstream, check that the switch input and mode condition on the Techstream changes according to VSC OFF switch operation. Result Result Proceed to OK A NG (Switch input and mode condition display do not change.) B NG (Switch input is normal, but mode condition display does not change.) C B --> See step 6 C --> See step 8 A: Go to next step
  5. INSPECT COMBINATION METER ASSEMBLY Turn the power switch off. Perform the Active Test of the combination meter assembly (meter CPU) using the Techstream. Refer to «DATA LIST / ACTIVE TEST [03/2012 - ]»(ref-600424-S05000119232014022400000) . Check the combination meter assembly. OK The multi-information display turns on or off in accordance with the Techstream operation. HINT: If troubleshooting has been carried out according to Problem Symptoms Table, refer back to the table and proceed to the next step before replacing the part. Refer to «PROBLEM SYMPTOMS TABLE [03/2012 - ]»(ref-600441-S24114725172014022400000) . NG --> See step 9 OK --> See step 8
  6. INSPECT VSC OFF SWITCH Remove the VSC OFF switch (integration control and panel assembly). Refer to «REMOVAL [03/2012 - ]»(ref-600606-S19782457282014022400000) . Inspect the VSC OFF switch (integration control and panel assembly). Refer to «INSPECTION [03/2012 - ]»(ref-600606-S19644776272014022400000) . NG --> See step 11 OK: Go to next step
  7. CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU ASSEMBLY - VSC OFF SWITCH) Disconnect the A14 skid control ECU assembly connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition A14-39 (CSW) - N6-15 (+) Always Below 1 ohms A14-39 (CSW) - Body ground Always 10 kohms or higher N6-8 (E) - Body ground Always Below 1 ohms HINT: If troubleshooting has been carried out according to Problem Symptoms Table, refer back to the table and proceed to the next step. Refer to «PROBLEM SYMPTOMS TABLE [03/2012 - ]»(ref-600441-S24114725172014022400000) . NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 8
  8. REPLACE SKID CONTROL ECU ASSEMBLY. Refer to «REMOVAL [03/2012 - ]»(ref-600606-S38751024972014022400000)
  9. INSPECT METER / GAUGE SYSTEM. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [03/2012 - ]»(ref-600424-S37567036452014022400000)
  10. INSPECT CAN COMMUNICATION SYSTEM. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [03/2012 - ]»(ref-600588-S38298476802014022400000)
  11. REPLACE INTEGRATION CONTROL AND PANEL ASSEMBLY. Refer to «REMOVAL [03/2012 - ]»(ref-600606-S19782457282014022400000)
  1. CHECK CAN COMMUNICATION SYSTEM See step 1 B --> See step 6 A: Go to next step
  2. PERFORM ACTIVE TEST USING TECHSTREAM (TRAC OFF INDICATOR) Connect the Techstream to the DLC3. Turn the power switch on (IG). Select the Active Test on the Techstream. Refer to «DATA LIST / ACTIVE TEST [03/2012 - ]»(ref-600441-S00637717752014022400000) . ABS/VSC/TRAC Tester Display Test Part Control Range Diagnostic Note TRC(TRAC) OFF Indicator Light Multi-information display (TRAC OFF indicator) Display ON/OFF Observe combination meter Check that the multi-information display (TRAC OFF indicator) on the combination meter assembly turns on or off in accordance with the Techstream operation. OK The multi-information display (TRAC OFF indicator) turns on or off in accordance with the Techstream operation. HINT: If troubleshooting has been carried out according to Problem Symptoms Table, refer back to the table and proceed to the next step before replacing the part. Refer to «PROBLEM SYMPTOMS TABLE [03/2012 - ]»(ref-600441-S24114725172014022400000) . NG --> See step 3 OK --> See step 4
  3. INSPECT COMBINATION METER ASSEMBLY Turn the power switch off. Perform the Active Test of the combination meter assembly (meter CPU) using the Techstream. Refer to «DATA LIST / ACTIVE TEST [03/2012 - ]»(ref-600424-S05000119232014022400000) . Check the combination meter assembly. OK The multi-information display turns on or off in accordance with the Techstream operation. HINT: If troubleshooting has been carried out according to Problem Symptoms Table, refer back to the table and proceed to the next step. Refer to «PROBLEM SYMPTOMS TABLE [03/2012 - ]»(ref-600441-S24114725172014022400000) . NG --> See step 5 OK --> See step 4
  4. REPLACE SKID CONTROL ECU ASSEMBLY. Refer to «REMOVAL [03/2012 - ]»(ref-600606-S38751024972014022400000)
  5. INSPECT METER / GAUGE SYSTEM. Refer to «REMOVAL [03/2012 - ]»(ref-600590-S40847194542014022400000)
  6. INSPECT CAN COMMUNICATION SYSTEM. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [03/2012 - ]»(ref-600588-S38298476802014022400000)
  1. CHECK CAN COMMUNICATION SYSTEM See step 1 B --> See step 6 A: Go to next step
  2. CHECK IF SKID CONTROL ECU CONNECTOR IS SECURELY CONNECTED See step 2 NG --> CONNECT CONNECTOR TO ECU CORRECTLY OK: Go to next step
  3. CHECK AUXILIARY BATTERY See step 3 NG --> CHARGE OR REPLACE AUXILIARY BATTERY OK: Go to next step
  4. INSPECT COMBINATION METER ASSEMBLY Perform the Active Test of the combination meter assembly (meter CPU) using the Techstream. Refer to «DATA LIST / ACTIVE TEST [03/2012 - ]»(ref-600424-S05000119232014022400000) . Check the combination meter assembly. OK The brake warning light / yellow (minor malfunction) turns on or off in accordance with the Techstream operation. HINT: If troubleshooting has been carried out according to Problem Symptoms Table refer back to the table and proceed to the next step before replacing the part. Refer to «PROBLEM SYMPTOMS TABLE [03/2012 - ]»(ref-600441-S24114725172014022400000) . NG --> See step 7 OK --> See step 5
  5. REPLACE SKID CONTROL ECU ASSEMBLY. Refer to «REMOVAL [03/2012 - ]»(ref-600606-S38751024972014022400000)
  6. INSPECT CAN COMMUNICATION SYSTEM. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [03/2012 - ]»(ref-600588-S38298476802014022400000)
  7. REPLACE COMBINATION METER ASSEMBLY. Refer to «REMOVAL [03/2012 - ]»(ref-600590-S40847194542014022400000)
  1. CHECK CAN COMMUNICATION SYSTEM See step 1 B --> See step 5 A: Go to next step
  2. PERFORM ACTIVE TEST USING TECHSTREAM (BRAKE WARNING LIGHT / YELLOW (MINOR MALFUNCTION)) Connect the Techstream to the DLC3. Turn the power switch on (IG). Select the Active Test on the Techstream. Refer to «DATA LIST / ACTIVE TEST [03/2012 - ]»(ref-600441-S00637717752014022400000) . ABS/VSC/TRAC Tester Display Test Part Control Range Diagnostic Note ECB* Warning Light Brake warning light / yellow (minor malfunction) Warning light ON/OFF Observe combination meter *: Electronically Controlled Brake System Check that the brake warning light / yellow (minor malfunction) on the combination meter assembly turns on or off in accordance with the Techstream operation. OK The brake warning light / yellow (minor malfunction) turns on or off in accordance with the Techstream operation. HINT: If troubleshooting has been carried out according to Problem Symptoms Table, refer back to the table and proceed to the next step before replacing the part. Refer to «PROBLEM SYMPTOMS TABLE [03/2012 - ]»(ref-600441-S24114725172014022400000) . NG --> See step 3 OK --> See step 4
  3. INSPECT COMBINATION METER ASSEMBLY Turn the power switch off. Perform the Active Test of the combination meter assembly (meter CPU) using the Techstream. Refer to «DATA LIST / ACTIVE TEST [03/2012 - ]»(ref-600424-S05000119232014022400000) . Check the combination meter assembly. OK The brake warning light / yellow (minor malfunction) turns on or off in accordance with the Techstream operation. HINT: If troubleshooting has been carried out according to Problem Symptoms Table, refer back to the table and proceed to the next step before replacing the part. Refer to «PROBLEM SYMPTOMS TABLE [03/2012 - ]»(ref-600441-S24114725172014022400000) . NG --> See step 6 OK --> See step 4
  4. REPLACE SKID CONTROL ECU ASSEMBLY. Refer to «REMOVAL [03/2012 - ]»(ref-600606-S38751024972014022400000)
  5. INSPECT CAN COMMUNICATION SYSTEM. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [03/2012 - ]»(ref-600588-S38298476802014022400000)
  6. REPLACE COMBINATION METER ASSEMBLY. Refer to «REMOVAL [03/2012 - ]»(ref-600590-S40847194542014022400000)
  1. PRE-CHECK If the brake hold standby indicator light does not illuminate even though the brake hold switch (satellite switch set) is pushed, check that the brake hold function operation conditions are met. The driver's door is closed. Driver's seat belt is fastened. The engine hood is closed. The trunk is closed. The system is normal. HINT: If a malfunction occurs in one of the following systems, the brake hold operated indicator light will blink. If this occurs, perform troubleshooting on the malfunctioning system. Electronically controlled brake system ABS system VSC system Electric parking brake system Hybrid control system NEXT: Go to next step
  2. CHECK CAN COMMUNICATION SYSTEM See step 1 B --> See step 9 A: Go to next step
  3. INSPECT COMBINATION METER ASSEMBLY Perform the Active Test of the combination meter assembly (meter CPU) using the Techstream. Refer to «DATA LIST / ACTIVE TEST [03/2012 - ]»(ref-600424-S05000119232014022400000) . Check the combination meter assembly. OK The brake hold standby indicator light turns on or off in accordance with the Techstream operation. HINT: If troubleshooting has been carried out according to Problem Symptoms Table refer back to the table and proceed to the next step before replacing the part. Refer to «PROBLEM SYMPTOMS TABLE [03/2012 - ]»(ref-600441-S24114725172014022400000) . NG --> See step 10 OK: Go to next step
  4. PERFORM ACTIVE TEST USING TECHSTREAM (BRAKE HOLD STANDBY INDICATOR LIGHT) Connect the Techstream to the DLC3. Turn the power switch on (IG). Select the Active Test mode on the Techstream. ABS/VSC/TRAC Tester Display Test Part Control Range Diagnostic Note BH Standby Light Brake hold standby indicator light Indicator light ON/OFF Observe combination meter Check that the brake hold standby indicator light on the combination meter assembly turns on or off in accordance with the Techstream operation. OK The brake hold standby indicator light turns on or off in accordance with the Techstream operation. NG --> See step 11 OK: Go to next step
  5. INSPECT BRAKE HOLD SWITCH Remove the brake hold switch (satellite switch set). Refer to «REMOVAL [03/2012 - ]»(ref-600606-S09363749622014022400000) . Inspect the brake hold switch (satellite switch set). Refer to «INSPECTION [03/2012 - ]»(ref-600606-S20851088512014022400000) . NG --> See step 12 OK: Go to next step
  6. CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU ASSEMBLY - BRAKE HOLD SWITCH) Disconnect the A16 skid control ECU assembly connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition A16-23 (HZRI) - N42-7 (+B) Always Below 1 ohms A16-23 (HZRI) - Body ground Always 10 kohms or higher N42-4 (E) - Body ground Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (CTY CIRCUIT) OK: Go to next step
  7. INSPECT FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY Turn on the interior lights and check that they illuminate, and then set the switch so that the lights illuminate when the door is opened. Check that the lights illuminate when the driver door is opened. OK The interior lights illuminate when the driver door is opened. NG --> See step 14 OK: Go to next step
  8. CHECK HARNESS AND CONNECTOR (CTY TERMINAL) Disconnect the A14 skid control ECU assembly connector. Measure the voltage and pulse according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition A14-25 (CTY) - Body ground Driver door open Below 1 V Driver door closed Pulse generation NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (CTY CIRCUIT) OK --> See step 13
  9. INSPECT CAN COMMUNICATION SYSTEM. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [03/2012 - ]»(ref-600588-S38298476802014022400000)
  10. REPLACE COMBINATION METER ASSEMBLY. Refer to «REMOVAL [03/2012 - ]»(ref-600590-S40847194542014022400000)
  11. REPLACE SKID CONTROL ECU ASSEMBLY. Refer to «REMOVAL [03/2012 - ]»(ref-600606-S38751024972014022400000)
  12. REPLACE SATELLITE SWITCH SET. Refer to «REMOVAL [03/2012 - ]»(ref-600606-S09363749622014022400000)
  13. REPLACE SKID CONTROL ECU ASSEMBLY. Refer to «REMOVAL [03/2012 - ]»(ref-600606-S38751024972014022400000)
  14. INSPECT LIGHTING SYSTEM. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [03/2012 - ]»(ref-600423-S01453187142014022400000)
  1. PRE-CHECK Check that the brake hold standby indicator light operates normally. Refer to «Brake Hold Standby Indicator Light Circuit»(ref-600627-S16593538352014022400000) . If the brake hold operated indicator light does not illuminate although the brake hold standby indicator light is illuminated, check that the following brake hold operation (maintaining brake oil pressure) conditions are met. System is in operation standby state. Shift position is not P or R. Driver is depressing brake pedal and vehicle is fully stopped. Driver is not depressing accelerator pedal. Vehicle is not on steep decline. HINT: If a malfunction occurs in one of the following systems, the brake hold operated indicator light will blink. If this occurs, perform troubleshooting on the malfunctioning system. Electronically controlled brake system ABS system VSC system Electric parking brake system Hybrid control system NEXT: Go to next step
  2. INSPECT COMBINATION METER ASSEMBLY Perform the Active Test of the combination meter assembly (meter CPU) using the Techstream. Refer to «DATA LIST / ACTIVE TEST [03/2012 - ]»(ref-600424-S05000119232014022400000) . Check the combination meter assembly. OK The brake hold operated indicator light turns on or off in accordance with the Techstream operation. HINT: If troubleshooting has been carried out according to Problem Symptoms Table refer back to the table and proceed to the next step before replacing the part. Refer to «PROBLEM SYMPTOMS TABLE [03/2012 - ]»(ref-600441-S24114725172014022400000) . NG --> See step 4 OK: Go to next step
  3. PERFORM ACTIVE TEST USING TECHSTREAM (BRAKE HOLD OPERATED INDICATOR LIGHT) Connect the Techstream to the DLC3. Turn the power switch on (IG). Select the Active Test mode on the Techstream. ABS/VSC/TRAC Tester Display Test Part Control Range Diagnostic Note BH Operated Light Brake hold operated indicator light Indicator light ON/OFF Observe combination meter Check that the brake hold operated indicator light on the combination meter assembly turns on or off in accordance with the Techstream operation. OK The brake hold operated indicator light turns on or off in accordance with the Techstream operation. HINT: If troubleshooting has been carried out according to Problem Symptoms Table refer back to the table and proceed to the next step before replacing the part. Refer to «PROBLEM SYMPTOMS TABLE [03/2012 - ]»(ref-600441-S24114725172014022400000) . NG --> See step 5 OK --> See step 6
  4. REPLACE COMBINATION METER ASSEMBLY. Refer to «REMOVAL [03/2012 - ]»(ref-600590-S40847194542014022400000)
  5. REPLACE SKID CONTROL ECU ASSEMBLY. Refer to «REMOVAL [03/2012 - ]»(ref-600606-S38751024972014022400000)
  6. CHECK FOR INTERMITTENT PROBLEMS. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [03/2012 - ]»(ref-600412-S12576599882014022400000)
  1. CHECK CAN COMMUNICATION SYSTEM See step 1 B --> See step 10 A: Go to next step
  2. CHECK IF SKID CONTROL ECU CONNECTOR IS SECURELY CONNECTED See step 2 NG --> CONNECT CONNECTOR TO ECU CORRECTLY OK: Go to next step
  3. CHECK AUXILIARY BATTERY See step 3 NG --> CHARGE OR REPLACE AUXILIARY BATTERY OK: Go to next step
  4. READ VALUE USING TECHSTREAM (VSC OFF SWITCH) See step 4 B --> See step 6 C --> See step 8 A: Go to next step
  5. INSPECT COMBINATION METER ASSEMBLY Turn the power switch off. Perform the Active Test of the combination meter assembly (meter CPU) using the Techstream. Refer to «DATA LIST / ACTIVE TEST [03/2012 - ]»(ref-600424-S05000119232014022400000) . Check the combination meter assembly. OK The VSC OFF indicator light turns on or off in accordance with the Techstream operation. HINT: If troubleshooting has been carried out according to Problem Symptoms Table, refer back to the table and proceed to the next step before replacing the part. Refer to «PROBLEM SYMPTOMS TABLE [03/2012 - ]»(ref-600441-S24114725172014022400000) . NG --> See step 9 OK --> See step 8
  6. INSPECT VSC OFF SWITCH See step 6 NG --> See step 11 OK: Go to next step
  7. CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU ASSEMBLY - VSC OFF SWITCH) See step 7 NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 8
  8. REPLACE SKID CONTROL ECU ASSEMBLY. Refer to «REMOVAL [03/2012 - ]»(ref-600606-S38751024972014022400000)
  9. REPLACE COMBINATION METER ASSEMBLY. Refer to «REMOVAL [03/2012 - ]»(ref-600590-S40847194542014022400000)
  10. INSPECT CAN COMMUNICATION SYSTEM. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [03/2012 - ]»(ref-600588-S38298476802014022400000)
  11. REPLACE INTEGRATION CONTROL AND PANEL ASSEMBLY. Refer to «REMOVAL [03/2012 - ]»(ref-600606-S19782457282014022400000)
  1. CHECK CAN COMMUNICATION SYSTEM See step 1 B --> See step 6 A: Go to next step
  2. PERFORM ACTIVE TEST USING TECHSTREAM (VSC OFF INDICATOR LIGHT) Connect the Techstream to the DLC3. Turn the power switch on (IG). Select the Active Test on the Techstream. Refer to «DATA LIST / ACTIVE TEST [03/2012 - ]»(ref-600441-S00637717752014022400000) . ABS/VSC/TRAC Tester Display Test Part Control Range Diagnostic Note VSC OFF Indicator Light VSC OFF indicator light Indicator light ON/OFF Observe combination meter Check that the VSC OFF indicator light on the combination meter assembly turns on or off in accordance with the Techstream operation. OK The VSC OFF indicator light turns on or off in accordance with the Techstream operation. HINT: If troubleshooting has been carried out according to Problem Symptoms Table, refer back to the table and proceed to the next step before replacing the part. Refer to «PROBLEM SYMPTOMS TABLE [03/2012 - ]»(ref-600441-S24114725172014022400000) . NG --> See step 3 OK --> See step 4
  3. INSPECT COMBINATION METER ASSEMBLY Turn the power switch off. Perform the Active Test of the combination meter assembly (meter CPU) assembly using the Techstream. Refer to «DATA LIST / ACTIVE TEST [03/2012 - ]»(ref-600424-S05000119232014022400000) . Check the combination meter assembly. OK The VSC OFF indicator light turns on or off in accordance with the Techstream operation. HINT: If troubleshooting has been carried out according to Problem Symptoms Table, refer back to the table and proceed to the next step. Refer to «PROBLEM SYMPTOMS TABLE [03/2012 - ]»(ref-600441-S24114725172014022400000) . NG --> See step 5 OK --> See step 4
  4. REPLACE SKID CONTROL ECU ASSEMBLY. Refer to «REMOVAL [03/2012 - ]»(ref-600606-S38751024972014022400000)
  5. REPLACE COMBINATION METER ASSEMBLY. Refer to «REMOVAL [03/2012 - ]»(ref-600590-S40847194542014022400000)
  6. INSPECT CAN COMMUNICATION SYSTEM. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [03/2012 - ]»(ref-600588-S38298476802014022400000)
  1. CHECK CAN COMMUNICATION SYSTEM See step 1 B --> See step 6 A: Go to next step
  2. CHECK IF SKID CONTROL ECU CONNECTOR IS SECURELY CONNECTED See step 2 NG --> CONNECT CONNECTOR TO ECU CORRECTLY OK: Go to next step
  3. CHECK AUXILIARY BATTERY See step 3 NG --> CHARGE OR REPLACE AUXILIARY BATTERY OK: Go to next step
  4. INSPECT COMBINATION METER ASSEMBLY Perform the Active Test of the combination meter assembly (meter CPU) using the Techstream. Refer to «DATA LIST / ACTIVE TEST [03/2012 - ]»(ref-600424-S05000119232014022400000) . Check the combination meter assembly. OK The slip indicator light turns on or off in accordance with the Techstream operation. HINT: If troubleshooting has been carried out according to Problem Symptoms Table, refer back to the table and proceed to the next step before replacing the part. Refer to «PROBLEM SYMPTOMS TABLE [03/2012 - ]»(ref-600441-S24114725172014022400000) . NG --> See step 7 OK --> See step 5
  5. REPLACE SKID CONTROL ECU ASSEMBLY. Refer to «REMOVAL [03/2012 - ]»(ref-600606-S38751024972014022400000)
  6. INSPECT CAN COMMUNICATION SYSTEM. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [03/2012 - ]»(ref-600588-S38298476802014022400000)
  7. REPLACE COMBINATION METER ASSEMBLY. Refer to «REMOVAL [03/2012 - ]»(ref-600590-S40847194542014022400000)
  1. CHECK CAN COMMUNICATION SYSTEM See step 1 B --> See step 4 A: Go to next step
  2. PERFORM ACTIVE TEST USING TECHSTREAM (SLIP INDICATOR LIGHT) Connect the Techstream to the DLC3. Turn the power switch on (IG). Select the Active Test on the Techstream. Refer to «DATA LIST / ACTIVE TEST [03/2012 - ]»(ref-600441-S00637717752014022400000) . ABS/VSC/TRAC Tester Display Test Part Control Range Diagnostic Note Slip Indicator Light Slip indicator light Indicator light ON/OFF Observe combination meter Check that the slip indicator light on the combination meter assembly turns on or off in accordance with the Techstream operation. OK The slip indicator light turns on or off in accordance with the Techstream operation. HINT: If troubleshooting has been carried out according to Problem Symptoms Table, refer back to the table and proceed to the next step before replacing the part. Refer to «PROBLEM SYMPTOMS TABLE [03/2012 - ]»(ref-600441-S24114725172014022400000) . NG --> See step 3 OK --> See step 5
  3. INSPECT COMBINATION METER ASSEMBLY Turn the power switch off. Perform the Active Test of the combination meter assembly (meter CPU) using the Techstream. Refer to «DATA LIST / ACTIVE TEST [03/2012 - ]»(ref-600424-S05000119232014022400000) . Check the combination meter assembly. OK The slip indicator light turns on or off in accordance with the Techstream operation. HINT: If troubleshooting has been carried out according to Problem Symptoms Table, refer back to the table and proceed to the next step. Refer to «PROBLEM SYMPTOMS TABLE [03/2012 - ]»(ref-600441-S24114725172014022400000) . NG --> See step 6 OK --> See step 5
  4. INSPECT CAN COMMUNICATION SYSTEM. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [03/2012 - ]»(ref-600588-S38298476802014022400000)
  5. REPLACE SKID CONTROL ECU ASSEMBLY. Refer to «REMOVAL [03/2012 - ]»(ref-600606-S38751024972014022400000)
  6. REPLACE COMBINATION METER ASSEMBLY. Refer to «REMOVAL [03/2012 - ]»(ref-600590-S40847194542014022400000)
  1. CHECK CAN COMMUNICATION SYSTEM Check if a CAN communication system DTC is output. Refer to «DIAGNOSIS SYSTEM [03/2012 - ]»(ref-600620-S06280412312014022400000) . Result Result Proceed to DTC is not output A DTC is output B B --> See step 7 A: Go to next step
  2. CHECK HARNESS AND CONNECTOR (CG OF DLC3 - BODY GROUND) Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition N20-4 (CG) - Body ground Always Below 1 ohms TEXT IN ILLUSTRATION *a Front view of DLC3 NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  3. CHECK HARNESS AND CONNECTOR (TS OF DLC3 - POWER STEERING ECU ASSEMBLY) Disconnect the A29 power steering ECU assembly connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition N20-12 (TS) - A29-5 (TS) Always Below 1 ohms N20-12 (TS) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  4. CHECK POWER STEERING ECU ASSEMBLY Reconnect the power steering ECU assembly connector. Using SST, connect terminals 12 (TS) and 4 (CG) of the DLC3. SST: 09843-18040 Turn the power switch on (IG). Check that the power steering warning light is blinking. RESULT Result Proceed to Power steering warning light is blinking A Power steering warning light is not blinking B TEXT IN ILLUSTRATION *a Front view of DLC3 B --> See step 6 A --> See step 5
  5. REPLACE SKID CONTROL ECU ASSEMBLY. Refer to «REMOVAL [03/2012 - ]»(ref-600606-S38751024972014022400000)
  6. REPLACE POWER STEERING ECU ASSEMBLY. Refer to «REMOVAL [03/2012 - ]»(ref-600602-S19679755502014022400000)
  7. INSPECT CAN COMMUNICATION SYSTEM. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [03/2012 - ]»(ref-600588-S38298476802014022400000)

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