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Active Torque Control 4WD System (Diagnostic Codes & Circuit Tests): Other Lexus RX III рестайлинг

Transfer Case ~3936 words

PROCEDURE

  1. CHECK FOR DTC (CAN COMMUNICATION SYSTEM AND BRAKE CONTROL SYSTEM) Check if the CAN communication system DTC is output. Refer to «DIAGNOSIS SYSTEM [03/2012 - 07/2012]»(ref-602741-S17182073442014030500000) . Start the engine. Drive the vehicle, accelerate to a speed of 3 km/h (2 mph) or more, and check if the speed sensor DTC (brake control system DTC) is output. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-602555-S42628919292014030500000) . Result Result Proceed to Neither CAN communication system DTC nor speed sensor DTC (brake control system DTC) is output A CAN communication system DTC is output B Speed sensor DTC (brake control system DTC) is output C B --> See step 7 C --> See step 8 A: Go to next step
  2. INSPECT BATTERY Check the battery voltage. Standard Voltage 11 to 14 V NG --> INSPECT CHARGING SYSTEM OK: Go to next step
  3. CHECK WIRE HARNESS (4WD CONTROL ECU - BATTERY) Disconnect the ECU connector. Measure the voltage of the wire harness side connector. Standard Voltage Tester Connection Switch Condition Specified Condition O2-11 (IG1) - Body Ground Engine switch on (IG) 10 to 14 V TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to 4WD ECU) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  4. CHECK WIRE HARNESS (4WD CONTROL ECU - BODY GROUND) Disconnect the ECU connector. Measure the resistance of the wire harness side connector. Standard Resistance Tester Connection Condition Specified Condition O2-23 (GND) - Body Ground Always Below 1 ohms TEXT IN ILLUSTRATION *1 Rear view of wire harness connector (to 4WD Control ECU) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  5. RECONFIRM DTC Clear the DTC. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-602749-S16855062772014030500000) . Start the engine. Drive the vehicle, accelerate to a speed of 3 km/h (2 mph or more, and check if the same DTC is output. Result Result Proceed to DTC is output A DTC is not output B HINT: Reinstall the sensor, connectors, etc. and restore the vehicle to its prior condition before rechecking DTCs. B --> CHECK INTERMITTENT PROBLEMS A --> See step 6
  6. REPLACE 4WD ECU ASSEMBLY. Refer to «REMOVAL [03/2012 - 07/2012]»(ref-602729-S07101840792014030500000)
  7. REPAIR CIRCUIT INDICATOR BY OUTPUT CODE (CAN COMMUNICATION SYSTEM). Refer to «DIAGNOSTIC TROUBLE CODE CHART [03/2012 - ]»(ref-602741-S04175569912014030500000)
  8. REPAIR CIRCUIT INDICATOR BY OUTPUT CODE (BRAKE CONTROL SYSTEM). Refer to «DIAGNOSTIC TROUBLE CODE CHART [03/2012 - ]»(ref-602555-S21986890902014030500000)
  1. CHECK FOR DTC (CAN COMMUNICATION SYSTEM AND BRAKE CONTROL SYSTEM) Check if the CAN communication system DTC is output. Refer to «DIAGNOSIS SYSTEM [07/2012 - ]»(ref-602741-S11538301432014030500000) . Start the engine. Drive the vehicle, accelerate to a speed of 3 km/h (2 mph) or more, and check if the speed sensor DTC (brake control system DTC) is output. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-602555-S42628919292014030500000) . Result Result Proceed to Neither CAN communication system DTC nor speed sensor DTC (brake control system DTC) is output A CAN communication system DTC is output B Speed sensor DTC (brake control system DTC) is output C B --> See step 7 C --> See step 8 A: Go to next step
  2. INSPECT BATTERY Check the battery voltage. Standard Voltage 11 to 14 V NG --> INSPECT CHARGING SYSTEM OK: Go to next step
  3. CHECK WIRE HARNESS (4WD CONTROL ECU - BATTERY) Disconnect the ECU connector. Measure the voltage of the wire harness side connector. Standard Voltage Tester Connection Switch Condition Specified Condition O2-11 (IG1) - Body Ground Engine switch on (IG) 10 to 14 V TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to 4WD ECU) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  4. CHECK WIRE HARNESS (4WD CONTROL ECU - BODY GROUND) Disconnect the ECU connector. Measure the resistance of the wire harness side connector. Standard Resistance Tester Connection Condition Specified Condition O2-23 (GND) - Body Ground Always Below 1 ohms TEXT IN ILLUSTRATION *1 Rear view of wire harness connector (to 4WD Control ECU) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  5. RECONFIRM DTC Clear the DTC. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-602749-S16855062772014030500000) . Start the engine. Drive the vehicle, accelerate to a speed of 3 km/h (2 mph or more, and check if the same DTC is output. Result Result Proceed to DTC is output A DTC is not output B HINT: Reinstall the sensor, connectors, etc. and restore the vehicle to its prior condition before rechecking DTCs. B --> CHECK INTERMITTENT PROBLEMS A --> See step 6
  6. REPLACE 4WD ECU ASSEMBLY. Refer to «REMOVAL [07/2012 - ]»(ref-602729-S06882064082014030500000)
  7. REPAIR CIRCUIT INDICATOR BY OUTPUT CODE (CAN COMMUNICATION SYSTEM). Refer to «DIAGNOSTIC TROUBLE CODE CHART [03/2012 - ]»(ref-602741-S04175569912014030500000)
  8. REPAIR CIRCUIT INDICATOR BY OUTPUT CODE (BRAKE CONTROL SYSTEM). Refer to «DIAGNOSTIC TROUBLE CODE CHART [03/2012 - ]»(ref-602555-S21986890902014030500000)
  1. CHECK FOR DTC (SFI SYSTEM) Check if the SFI system DTC is output. Refer to «DTC CHECK / CLEAR [03/2012 - 07/2012]»(ref-602560-S42705218842014030500000) . Result Result Proceed to SFI system DTC is not output A SFI system DTC is output B B --> See step 3 A --> See step 2
  2. REPLACE 4WD ECU ASSEMBLY. Refer to «REMOVAL [03/2012 - 07/2012]»(ref-602729-S07101840792014030500000)
  3. GO TO SFI SYSTEM. Refer to «DIAGNOSTIC TROUBLE CODE CHART [03/2012 - 07/2012]»(ref-602699-S37427334262014030500000)
  1. CHECK FOR DTC (SFI SYSTEM) Check if the SFI system DTC is output. Refer to «DTC CHECK / CLEAR [07/2012 - ]»(ref-602560-S10249755982014030500000) . Result Result Proceed to SFI system DTC is not output A SFI system DTC is output B B --> See step 3 A --> See step 2
  2. REPLACE 4WD ECU ASSEMBLY. Refer to «REMOVAL [07/2012 - ]»(ref-602729-S06882064082014030500000)
  3. GO TO SFI SYSTEM. Refer to «DIAGNOSTIC TROUBLE CODE CHART [07/2012 - ]»(ref-602699-S06530808582014030500000)
  1. CHECK FOR DTC Clear the DTC. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-602749-S16855062772014030500000) . Turn the engine switch off. Turn the engine switch on (IG) again. Drive the vehicle, accelerate to a speed of 20 km/h (12 mph) or more, and check if the speed sensor DTC (brake control system DTC) is output. Result Result Proceed to Brake control system DTC (speed sensor or deceleration sensor DTC) is not output A Brake control system DTC (speed sensor or deceleration sensor DTC) is output B HINT: When DTCs indicating a CAN communication system malfunction are output, repair the CAN communication system before repairing each corresponding sensor. B --> See step 5 A: Go to next step
  2. READ VALUE USING TECHSTREAM (SPEED SENSOR SIGNAL) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Chassis / 4WD / Data List. Read the value displayed on the Techstream. Standard Tester Display Measurement Item/Range Normal Condition Diagnostic Note FR Wheel Speed FR Wheel Speed / Min.: 0 mph (0 km/h), Max.: 202 mph (326.4 km/h) Actual wheel speed Almost no difference from the speedometer FL Wheel Speed FL Wheel Speed / Min.: 0 mph (0 km/h), Max.: 202 mph (326.4 km/h) Actual wheel speed Almost no difference from the speedometer RR Wheel Speed RR Wheel Speed / Min.: 0 mph (0 km/h), Max.: 202 mph (326.4 km/h) Actual wheel speed Almost no difference from the speedometer RL Wheel Speed RL Wheel Speed / Min.: 0 mph (0 km/h), Max.: 202 mph (326.4 km/h) Actual wheel speed Almost no difference from the speedometer OK The speed value output from the speed sensor displayed on the Techstream is the same as the actual vehicle speed measured using a speedometer tester (calibrated chassis dynamometer). NG --> See step 4 OK: Go to next step
  3. READ VALUE USING TECHSTREAM (DECELERATION SENSOR SIGNAL) Read the value displayed on the Techstream. Standard Tester Display Measurement Item/Range Normal Condition Diagnostic Note Forward and Rearward G Deceleration sensor (Forward and Rearward G) / Min.: -25.10 m/s 2 Max.: 24.90 m/s 2 Approximately 0 +/-0.13 while stationary - OK The deceleration sensor output value is normal. NG --> See step 4 OK --> See step 6
  4. GO TO BRAKE CONTROL SYSTEM. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [03/2012 - 07/2012]»(ref-602555-S16582971432014030500000)
  5. REPAIR CIRCUIT INDICATOR BY OUTPUT CODE (BRAKE CONTROL SYSTEM). Refer to «DIAGNOSTIC TROUBLE CODE CHART [03/2012 - ]»(ref-602555-S21986890902014030500000)
  6. REPLACE 4WD ECU ASSEMBLY. Refer to «REMOVAL [03/2012 - 07/2012]»(ref-602729-S07101840792014030500000)
  1. CHECK FOR DTC Clear the DTC. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-602749-S16855062772014030500000) . Turn the engine switch off. Turn the engine switch on (IG) again and check that no CAN communication system DTC(s) is output. Refer to «DIAGNOSIS SYSTEM [03/2012 - 07/2012]»(ref-602741-S17182073442014030500000) . Start the engine. Drive the vehicle and turn the steering wheel to the right and left at a speed of 35 km/h (24 mph) and check that no brake control system (steering angle sensor) DTC (C1432, C1433 or C1434) is output. Refer to «DIAGNOSTIC TROUBLE CODE CHART [03/2012 - ]»(ref-602555-S21986890902014030500000) . Result Result Proceed to Neither CAN communication system DTC nor brake control system DTC is output A CAN communication system DTC is output B Brake control system (steering angle sensor) DTC (C1432, C1433 or C1434) is output C HINT: When DTCs indicating a CAN communication system malfunction are output, repair the CAN communication system before repairing each corresponding sensor. B --> See step 4 C --> See step 5 A: Go to next step
  2. CHECK WIRE HARNESS (STEERING ANGLE SENSOR - BATTERY) Remove the steering wheel and the column cover lower. Make sure that there is no looseness at the locking part and the connecting part of the connectors. Disconnect the steering angle sensor connector. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition F43-5 (IG) - Body ground Engine switch on (IG) 11 to 14 V F43-6 (BAT) - Body ground Always 11 to 14 V TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Steering Angle Sensor) NG --> REPAIR OR REPLACE HARNESS AND CONNECTOR OK: Go to next step
  3. CHECK WIRE HARNESS (STEERING ANGLE SENSOR - BODY GROUND) Turn the engine switch off. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition F43-2 (ESS) - Body ground Always Below 1 ohms TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Steering Angle Sensor) NG --> REPAIR OR REPLACE HARNESS AND CONNECTOR OK --> See step 6
  4. REPAIR CIRCUIT INDICATOR OUTPUT CODE (CAN COMMUNICATION SYSTEM). Refer to «DIAGNOSTIC TROUBLE CODE CHART [03/2012 - ]»(ref-602741-S04175569912014030500000)
  5. REPAIR OR REPLACE CIRCUIT INDICATOR OUTPUT CODE (STEERING ANGLE SENSOR CIRCUIT). Refer to «DIAGNOSTIC TROUBLE CODE CHART [03/2012 - ]»(ref-602555-S21986890902014030500000)
  6. REPLACE SPIRAL CABLE (STEERING ANGLE SENSOR). Refer to «REMOVAL [03/2012 - 07/2012]»(ref-602553-S03151199422014030500000)
  1. CHECK FOR DTC Clear the DTC. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-602749-S16855062772014030500000) . Turn the engine switch off. Turn the engine switch on (IG) again and check that no CAN communication system DTC(s) is output. Refer to «DIAGNOSIS SYSTEM [07/2012 - ]»(ref-602741-S11538301432014030500000) . Start the engine. Drive the vehicle and turn the steering wheel to the right and left at a speed of 35 km/h (24 mph) and check that no brake control system (steering angle sensor) DTC (C1432, C1433 or C1434) is output. Refer to «DIAGNOSTIC TROUBLE CODE CHART [03/2012 - ]»(ref-602555-S21986890902014030500000) . Result Result Proceed to Neither CAN communication system DTC nor brake control system DTC is output A CAN communication system DTC is output B Brake control system (steering angle sensor) DTC (C1432, C1433 or C1434) is output C HINT: When DTCs indicating a CAN communication system malfunction are output, repair the CAN communication system before repairing each corresponding sensor. B --> See step 4 C --> See step 5 A: Go to next step
  2. CHECK WIRE HARNESS (STEERING ANGLE SENSOR - BATTERY) Remove the steering wheel and the column cover lower. Make sure that there is no looseness at the locking part and the connecting part of the connectors. Disconnect the steering angle sensor connector. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition F43-5 (IG) - Body ground Engine switch on (IG) 11 to 14 V F43-6 (BAT) - Body ground Always 11 to 14 V TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Steering Angle Sensor) NG --> REPAIR OR REPLACE HARNESS AND CONNECTOR OK: Go to next step
  3. CHECK WIRE HARNESS (STEERING ANGLE SENSOR - BODY GROUND) Turn the engine switch off. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition F43-2 (ESS) - Body ground Always Below 1 ohms TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Steering Angle Sensor) NG --> REPAIR OR REPLACE HARNESS AND CONNECTOR OK --> See step 6
  4. REPAIR CIRCUIT INDICATOR OUTPUT CODE (CAN COMMUNICATION SYSTEM). Refer to «DIAGNOSTIC TROUBLE CODE CHART [03/2012 - ]»(ref-602741-S04175569912014030500000)
  5. REPAIR OR REPLACE CIRCUIT INDICATOR OUTPUT CODE (STEERING ANGLE SENSOR CIRCUIT). Refer to «DIAGNOSTIC TROUBLE CODE CHART [03/2012 - ]»(ref-602555-S21986890902014030500000)
  6. REPLACE SPIRAL CABLE (STEERING ANGLE SENSOR). Refer to «REMOVAL [07/2012 - ]»(ref-602553-S33625378332014030500000)
  1. CHECK WIRE HARNESS (4WD ECU - BATTERY) Disconnect the ECU connector. Measure the voltage of the wire harness side connector. Standard Voltage Tester Connection Condition Specified Condition O2-9 (BSLC) - Body Ground Always 11 to 14 V TEXT IN ILLUSTRATION *1 Rear view of wire harness connector (to 4WDl ECU) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  2. INSPECT ELECTROMAGNETIC CONTROL COUPLING (4WD LINEAR SOLENOID) Remove the coupling connector. Measure the resistance of the solenoid. Standard Resistance Tester Connection Condition Specified Condition 1 (BSF) - 2 (SLC) Always 2.2 to 2.6 ohms 1 (BSF) - Body ground Always 10 kohms or higher 2 (SLC) - Body ground Always 10 kohms or higher TEXT IN ILLUSTRATION *1 4WD Linear Solenoid NG --> See step 4 OK: Go to next step
  3. CHECK WIRE HARNESS (ELECTROMAGNETIC CONTROL COUPLING - 4WD CONTROL ECU) Disconnect the ECU connector. Measure the resistance of the wire harness side connector. Standard Resistance Tester Connection Condition Specified Condition O2-13 (SLC+) - R5-1(BSF) Always Below 1 ohms O2-32 (SLC-) - R5-2 (SLC) Always Below 1 ohms O2-13 (SLC+) - Body ground Always 10 kohms or higher O2-32 (SLC-) - Body ground Always 10 kohms or higher TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to 4WD Linear Solenoid) *2 Rear view of wire harness connector (to 4WD ECU) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 5
  4. REPLACE ELECTRO MAGNETIC CONTROL COUPLING SUB-ASSEMBLY. Refer to «REMOVAL [03/2012 - ]»(ref-602751-S41134955542014030500000)
  5. REPLACE 4WD ECU ASSEMBLY. Refer to «REMOVAL [03/2012 - 07/2012]»(ref-602729-S07101840792014030500000)
  1. CHECK TIRE CONDITION Check the size and condition of all 4 tires. Refer to «INSPECTION [03/2012 - ]»(ref-602752-S17906129122014030500000) . HINT: This DTC is output when tire deformation or a difference in tire size is detected. OK The diameter and air pressure of all 4 tires are the same. NG --> REPLACE TIRE SO THAT ALL 4 TIRES ARE THE SAME IN SIZE OK: Go to next step
  2. CHECK DTC Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Check if the Brake control system DTC is output. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-602555-S42628919292014030500000) . Read the DTCs using the Techstream. Result Display (DTC Output) Proceed to Only "C1299" is output A "C1299" and other DTCs (Brake control system DTC) B B --> See step 6 A: Go to next step
  3. RECONFIRM DTC Clear the DTC. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-602749-S16855062772014030500000) . Start the engine. Drive the vehicle at the speed of 20 km/h (12 mph) or more and check that the same DTC is output. Result Result Proceed to DTC is output (C1299) A DTC is not output B B --> END A: Go to next step
  4. REPLACE 4WD ECU ASSEMBLY NEXT: Go to next step
  5. RECONFIRM DTC Clear the DTC. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-602749-S16855062772014030500000) . Start the engine. Drive the vehicle at the speed of 20 km/h (12 mph) or more and check that the same DTC is output. Result Result Proceed to DTC is output (C1299) A DTC is not output B B --> END A --> REPLACE ELECTRO MAGNETIC CONTROL COUPLING SUB-ASSEMBLY
  6. REPAIR CIRCUITS INDICATED BY OUTPUT DTCS (BRAKE CONTROL SYSTEM). Refer to «DIAGNOSTIC TROUBLE CODE CHART [03/2012 - ]»(ref-602555-S21986890902014030500000)
  1. CHECK FOR DTC Check for DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-602749-S16855062772014030500000) . Record the output DTCs (4WD control system). HINT: When DTCs indicating a CAN communication system malfunction are output, repair the CAN communication system before repairing each corresponding sensor. NEXT --> See step 2
  2. GO TO CAN COMMUNICATION SYSTEM. Refer to «DIAGNOSTIC TROUBLE CODE CHART [03/2012 - ]»(ref-602741-S04175569912014030500000)
  1. CHECK FOR DTC Check if the CAN communication system DTC is output. Refer to «DIAGNOSIS SYSTEM [03/2012 - 07/2012]»(ref-602741-S17182073442014030500000) . Check if the 4WD control system DTC is output. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-602749-S16855062772014030500000) . Result Result Proceed to Neither CAN communication system DTC nor 4WD control system DTC is output A CAN communication DTC is output B 4WD control system DTC is output C HINT: When DTCs indicating a CAN communication system malfunction are output, repair the CAN communication system before repairing each corresponding sensor. B --> See step 7 C --> See step 8 A: Go to next step
  2. CHECK IF 4WD ECU CONNECTOR IS SECURELY CONNECTED Check if the skid control ECU connector is securely connected. OK The connector is securely connected. NG --> CONNECT CONNECTOR TO ECU CORRECTLY OK: Go to next step
  3. CHECK BATTERY Check the battery voltage. Standard Voltage 11 to 14 V NG --> INSPECT CHARGING SYSTEM OK: Go to next step
  4. PERFORM ACTIVE TEST (4WD WARNING LIGHT) Warm up the engine. Turn the engine switch off. Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Chassis / 4WD / Active Test. According to the display on the Techstream, perform the Active Test. CHASSIS / 4WD / ACTIVE TEST Tester Display Test Part Control Range Diagnostic Note 4WD Warning Light Master Warning Light and Multi-information Display ON: Master warning light and Multi-information display on OFF: Master warning light and Multi-information display off Observe combination meter OK The warning light turns off. NG --> See step 5 OK --> See step 9
  5. CHECK WIRE HARNESS OR CONNECTOR (4WD ECU - BATTERY) Disconnect the ECU connector. Turn the engine switch on (IG). Measure the voltage of the wire harness side connector. Standard Voltage Tester Connection Condition Specified Condition O2-11 (IG1) - Body Ground Engine switch on (IG) 11 to 14 V TEXT IN ILLUSTRATION *1 Rear view of wire harness connector (to 4WD Control ECU) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  6. CHECK WIRE HARNESS OR CONNECTOR (4WD ECU - BODY GROUND) Disconnect the ECU connector. Measure the resistance of the wire harness side connector. Standard Resistance Tester Connection Condition Specified Condition O2-23 (GND) - Body Ground Always Below 1 ohms TEXT IN ILLUSTRATION *1 Rear view of wire harness connector (to 4WD Control ECU) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 10
  7. REPAIR CIRCUIT INDICATOR BY OUTPUT CODE (CAN COMMUNICATION SYSTEM). Refer to «DIAGNOSTIC TROUBLE CODE CHART [03/2012 - ]»(ref-602741-S04175569912014030500000)
  8. REPAIR CIRCUIT INDICATOR BY OUTPUT CODE (ACTIVE TORQUE CONTROL 4WD SYSTEM). Refer to «DIAGNOSTIC TROUBLE CODE CHART [03/2012 - ]»(ref-602749-S23360672912014030500000)
  9. REPLACE 4WD ECU ASSEMBLY. Refer to «REMOVAL [03/2012 - 07/2012]»(ref-602729-S07101840792014030500000)
  10. GO TO METER / GAUGE SYSTEM. Refer to «PROBLEM SYMPTOMS TABLE [03/2012 - 07/2012]»(ref-602745-S13547565002014030500000)
  1. CHECK FOR DTC Check if the CAN communication system DTC is output. Refer to «DIAGNOSIS SYSTEM [07/2012 - ]»(ref-602741-S11538301432014030500000) . Check if the 4WD control system DTC is output. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-602749-S16855062772014030500000) . Result Result Proceed to Neither CAN communication system DTC nor 4WD control system DTC is output A CAN communication DTC is output B 4WD control system DTC is output C HINT: When DTCs indicating a CAN communication system malfunction are output, repair the CAN communication system before repairing each corresponding sensor. B --> See step 7 C --> See step 8 A: Go to next step
  2. CHECK IF 4WD ECU CONNECTOR IS SECURELY CONNECTED Check if the skid control ECU connector is securely connected. OK The connector is securely connected. NG --> CONNECT CONNECTOR TO ECU CORRECTLY OK: Go to next step
  3. CHECK BATTERY Check the battery voltage. Standard Voltage 11 to 14 V NG --> INSPECT CHARGING SYSTEM OK: Go to next step
  4. PERFORM ACTIVE TEST (4WD WARNING LIGHT) Warm up the engine. Turn the engine switch off. Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Chassis / 4WD / Active Test. According to the display on the Techstream, perform the Active Test. CHASSIS / 4WD / ACTIVE TEST Tester Display Test Part Control Range Diagnostic Note 4WD Warning Light Master Warning Light and Multi-information Display ON: Master warning light and Multi-information display on OFF: Master warning light and Multi-information display off Observe combination meter OK The warning light turns off. NG --> See step 5 OK --> See step 9
  5. CHECK WIRE HARNESS OR CONNECTOR (4WD ECU - BATTERY) Disconnect the ECU connector. Turn the engine switch on (IG). Measure the voltage of the wire harness side connector. Standard Voltage Tester Connection Condition Specified Condition O2-11 (IG1) - Body Ground Engine switch on (IG) 11 to 14 V TEXT IN ILLUSTRATION *1 Rear view of wire harness connector (to 4WD Control ECU) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  6. CHECK WIRE HARNESS OR CONNECTOR (4WD ECU - BODY GROUND) Disconnect the ECU connector. Measure the resistance of the wire harness side connector. Standard Resistance Tester Connection Condition Specified Condition O2-23 (GND) - Body Ground Always Below 1 ohms TEXT IN ILLUSTRATION *1 Rear view of wire harness connector (to 4WD Control ECU) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 10
  7. REPAIR CIRCUIT INDICATOR BY OUTPUT CODE (CAN COMMUNICATION SYSTEM). Refer to «DIAGNOSTIC TROUBLE CODE CHART [03/2012 - ]»(ref-602741-S04175569912014030500000)
  8. REPAIR CIRCUIT INDICATOR BY OUTPUT CODE (ACTIVE TORQUE CONTROL 4WD SYSTEM). Refer to «DIAGNOSTIC TROUBLE CODE CHART [03/2012 - ]»(ref-602749-S23360672912014030500000)
  9. REPLACE 4WD ECU ASSEMBLY. Refer to «REMOVAL [07/2012 - ]»(ref-602729-S06882064082014030500000)
  10. GO TO METER / GAUGE SYSTEM. Refer to «PROBLEM SYMPTOMS TABLE [07/2012 - ]»(ref-602745-S30164897722014030500000)
  1. INSPECT 4 WHEEL DRIVE CONTROL SWITCH Disconnect the connector of 4 wheel drive control switch. Refer to «REMOVAL [03/2012 - 07/2012]»(ref-602729-S06003835572014030500000) . Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 6 (B) - 7 (GND) Press continuously 4 Wheel Drive Control Switch Below 1 ohms Release 4 Wheel Drive Control Switch 10 kohms or higher TEXT IN ILLUSTRATION *1 Component without harness connected (4 Wheel Drive Control Switch) NG --> See step 4 OK: Go to next step
  2. CHECK HARNESS AND CONNECTOR (4WD ECU - BODY GROUND) Connect the connector of 4 wheel drive control switch. Disconnect the ECU connector. Measure the resistance of the wire harness side connector. Standard Resistance Tester Connection Condition Specified Condition O2-7 (4WDL) - Body Ground Press continuously 4 Wheel Drive Control Switch Below 1 ohms Release 4 Wheel Drive Control Switch 10 kohms or higher TEXT IN ILLUSTRATION *1 Rear view of wire harness connector (to 4WD ECU) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 3
  3. REPLACE 4WD ECU ASSEMBLY. Refer to «REMOVAL [03/2012 - 07/2012]»(ref-602729-S07101840792014030500000)
  4. REPLACE 4 WHEEL DRIVE CONTROL SWITCH. Refer to «REMOVAL [03/2012 - 07/2012]»(ref-602729-S06003835572014030500000)

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