CAN Communication System (Diagnostics - Introduction): Diagnosis Lexus RX III

HOW TO PROCEED WITH TROUBLESHOOTING

Note. DTCs for the CAN communication system are as follows: U0073, U0100, U0101, U0104, U0114, U0122, U0123, U0124, U0126, U0129, U0131, U0132, U0140, U0142, U0149, U0151, U0155, U0163, U0164, U0182, U0199, U0200, U0208, U0230, U0235, U0327, U1000, U1002, U1100, U1101, U1102, U1104, U1105, U1110, U110B, U1115, U1126, U1121, U1132 and U1133. Refer to HOW TO PROCEED WITH TROUBLESHOOTING troubleshooting of each system if DTCs regarding the CAN communication system are not output.

HINT

*: Use the Techstream.

Scheme 31

Scheme 32

Scheme 33

1. VEHICLE BROUGHT TO WORKSHOP NEXT: Go to next step
2. CUSTOMER PROBLEM ANALYSIS Interview the customer and confirm the problem. NEXT: Go to next step
3. CHECK BATTERY Standard Voltage 11 to 14 V HINT: If the voltage is below 11 V, recharge or replace the battery before proceeding to the next step. NEXT: Go to next step
4. CHECK AND CLEAR DTCS* HINT: CAN communication DTCs are stored when there is an open or short in any of the communication wires. Any problems with the power source of a corresponding ECU or sensor, or problems in the ECU or the sensor itself also cause these DTCs to be stored. If a CAN communication wire connector is disconnected with the engine switch on (IG), the ECUs of the corresponding system and related systems store a DTC. NEXT: Go to next step
5. CHECK DLC3 BRANCH WIRE AND CAN NO. 1 BUS MAIN WIRE (CANH - CANL) NOTE: Turn the engine switch off before measuring the resistances between CAN bus main wires and between CAN bus branch wires. Turn the engine switch off before inspecting CAN bus wires for a ground short. After the engine switch is turned off, check that the key reminder warning system and light reminder warning system are not operating. Before measuring the resistance, leave the vehicle as is for at least 1 minute and do not operate the engine switch, any other switches or the doors. If any doors need to be opened in order to check connectors, open the doors and leave them open. HINT: Operating the engine switch, any other switches or a door triggers related ECU and sensor communication on the CAN. This communication will cause the resistance value to change. Even after DTCs are cleared, if a DTC is stored again after driving the vehicle for a while, the malfunction may be occurring due to vibration of the vehicle. In such a case, wiggling the ECUs or wire harness while performing the inspection below may help determine the cause of the malfunction. Turn the engine switch off. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition F17-6 (CANH) - F17-14 (CANL) Engine switch off 54 to 69 ohms TEXT IN ILLUSTRATION *1 DLC3 Result Result Proceed to OK A NG (70 ohms or higher) B NG (Below 54 ohms) C B --> GO TO OPEN IN CAN MAIN BUS WIRE. Refer to «Open in CAN Main Bus Line»(ref-400934-S24627715492011051800000) C --> GO TO SHORT IN CAN BUS LINES. Refer to «Check CAN Bus Lines for Short Circuit»(ref-400934-S38084095702011051800000) A: Go to next step
6. CHECK FOR SHORT TO GND IN CAN NO. 1 BUS (CANH, CANL - CG) Turn the engine switch off. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition F17-6 (CANH) - F17-4 (CG) Engine switch off 200 ohms or higher F17-14 (CANL) - F17-4 (CG) Engine switch off 200 ohms or higher TEXT IN ILLUSTRATION *1 DLC3 NG --> GO TO SHORT TO GND IN CAN BUS LINE. Refer to «Check CAN Bus Line for Short to GND»(ref-400934-S20549892062011051800000) OK: Go to next step
7. CHECK FOR SHORT TO +B IN CAN NO. 1 BUS (CANH, CANL - BAT) Disconnect the cable from the negative (-) battery terminal. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition F17-6 (CANH) - F17-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kohms or higher F17-14 (CANL) - F17-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kohms or higher TEXT IN ILLUSTRATION *1 DLC3 NG --> GO TO SHORT TO +B IN CAN BUS LINE. Refer to «Check CAN Bus Line for Short to +B»(ref-400934-S02629274522011051800000) OK: Go to next step
8. CHECK INSTALLED SYSTEMS (ECU AND SENSOR) THAT USE CAN COMMUNICATION Based on the vehicle equipment and specifications, confirm the systems that use CAN communication. Refer to «DIAGNOSIS SYSTEM»(ref-400834-S42883997332011051800000) . NEXT: Go to next step
9. CHECK ECUS CONNECTED TO CAN BUS* Select "CAN Bus Check" from screen on the Techstream. Refer to «DIAGNOSIS SYSTEM»(ref-400834-S42883997332011051800000) . Observe the screen for approximately 1 minute to check the ECUs and sensors displayed on the screen. Result Result Proceed to All ECUs and sensors connected to the CAN communication system are displayed on the screen. (CAN bus circuit is currently normal.) A All ECUs except the main body ECU connected to the CAN MS bus are not displayed on the screen. The main body ECU outputs DTC U1002. (Open or short in CAN MS bus main wires.) B*1 All ECUs connected to the CAN MS bus are not displayed on the screen. (Open in main body ECU branch wire or main body ECU malfunction.) C All ECUs except the power management control ECU connected to the CAN No. 2 bus are not displayed on the screen. The power management control ECU (power management1) outputs DTC U1002. (Open or short in CAN No. 2 bus main wires.) D*1 All ECUs except the power management control ECU connected to the power management bus are not displayed on the screen. The power management control ECU (power management2) outputs DTC U1002. (Open or short in power management bus main wires.) E*1 All ECUs connected to the CAN No. 2 bus and power management bus are not displayed on the screen. (Open in power management control ECU branch wires or power management control ECU malfunction.) F One of the ECUs and sensors connected to the CAN communication system is not displayed on the screen. (Open in ECU or sensor branch wires, or communication interrupted.) G Some ECUs and sensors repeatedly appear and disappear on the screen, during this check. (Open in one side of ECU or sensor branch wires.) H NOTE: The systems (ECUs and sensors) that adopt CAN communication vary depending on the vehicle and optional equipment. Check which systems (ECUs and sensors) are installed on the vehicle. Refer to «DIAGNOSIS SYSTEM»(ref-400834-S42883997332011051800000) . Non-installed ECUs or sensors will not be displayed. Do not mistake them for being in the communication stop mode. The ECUs and sensors that repeatedly appear and disappear from the screen during this check are considered normal. (The response to the Techstream and its display are affected by signals output from other ECUs which have an open circuit in either of their CAN bus branch wires.) HINT: *1: See Diagnostic Trouble Code Chart instead of Communication Stop Mode Table when some of the ECUs connected to the CAN MS bus, the CAN No. 2 bus and power management bus are not displayed on the screen. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-400834-S03841674552011051800000) . The ECUs connected to the CAN MS bus are displayed on the screen by the main body ECU. The ECUs connected to the CAN No. 2 bus are displayed on the screen by the power management control ECU. B --> GO TO U1002 (MAIN BODY). Refer to «DTC U1002: Lost Communication with Gateway Module (Main Body)»(ref-400935-S34910331292011051800000) C --> GO TO MAIN BODY ECU COMMUNICATION STOP MODE. Refer to «Main Body ECU Communication Stop Mode»(ref-400934-S04429073262011051800000) D --> GO TO U1002 (POWER MANAGEMENT1). Refer to «DTC U1002: Lost Communication with Gateway Module (Power Management1)»(ref-400935-S28434143502011051800000) E --> GO TO U1002 (POWER MANAGEMENT2). Refer to «DTC U1002: Lost Communication with Gateway Module (Power Management2)»(ref-400935-S13188483782011051800000) F --> GO TO POWER MANAGEMENT CONTROL ECU COMMUNICATION STOP MODE. Refer to «Power Management Control ECU Communication Stop Mode»(ref-400934-S37961057362011051800000) G --> GO TO COMMUNICATION STOP MODE TABLE. Refer to «PROBLEM SYMPTOMS TABLE»(ref-400834-S35123105772011051800000) H --> GO TO OPEN IN ONE SIDE OF CAN BRANCH LINE. Refer to «Open in One Side of CAN Branch Line»(ref-400934-S35212887272011051800000) A: Go to next step
10. RECHECK DTC HINT: Sometimes CAN communication system DTCs are output, but all ECUs and sensors connected to the CAN communication system are displayed on the Techstream. In this case, previous or history DTCs may indicate the cause of the problem. ECUs related to a problem in the CAN bus will store DTCs to indicate communication malfunctions. The communication stop mode in the CAN bus can be determined by comparing the combination of DTCs that have been set. Refer to 11 DTC Combination Table for the CAN bus. The main body ECU will store communication error DTCs when the ECUs connected to the CAN MS bus cannot communicate, or if a network malfunction occurs. The power management control ECU will store communication error DTCs when the ECUs connected to the CAN No. 2 bus and power management bus cannot communicate, or if a network malfunction occurs. Result Result Proceed to Communication error DTCs other than the codes output from the main body ECU and/or power management control ECU is output. (A malfunction occurred in the CAN No. 1 bus.) A The main body ECU outputs DTC 1002. (A malfunction occurred in the CAN MS bus.) B The power management control ECU (power management1) outputs DTC 1002. (A malfunction occurred in the CAN No. 2 bus.) C The power management control ECU (power management2) outputs DTC 1002. (A malfunction occurred in the power management bus.) D The main body ECU or power management ECU output DTCs other than DTC 1002. (A malfunction occurred in an ECU branch wire connected to the CAN No. 2 bus, CAN MS bus or power management bus.) E B --> GO TO U1002 (MAIN BODY). Refer to «DTC U1002: Lost Communication with Gateway Module (Main Body)»(ref-400935-S34910331292011051800000) C --> GO TO U1002 (POWER MANAGEMENT1). Refer to «DTC U1002: Lost Communication with Gateway Module (Power Management1)»(ref-400935-S28434143502011051800000) D --> GO TO U1002 (POWER MANAGEMENT2). Refer to «DTC U1002: Lost Communication with Gateway Module (Power Management2)»(ref-400935-S13188483782011051800000) E --> GO TO DIAGNOSTIC TROUBLE CODE CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-400834-S03841674552011051800000) A: Go to next step
11. DTC COMBINATION TABLE Confirm trouble according to the combination of output DTCs regarding the CAN communication system. Refer to «DIAGNOSIS SYSTEM»(ref-400834-S42883997332011051800000) . HINT: Previous CAN communication system DTCs may be the cause if CAN communication system DTCs are output and all ECUs and sensors connected to the CAN communication system are displayed on "CAN Bus Check" of the Techstream. NEXT: Go to next step
12. CIRCUIT INSPECTION NEXT: Go to next step
13. IDENTIFICATION OF PROBLEM NEXT: Go to next step
14. REPAIR OR REPLACEMENT NEXT: Go to next step
15. CONFIRMATION TEST* NEXT --> END

Note. DTCs for the CAN communication system are as follows: U0073, U0100, U0101, U0104, U0114, U0122, U0123, U0124, U0126, U0129, U0131, U0132, U0140, U0142, U0149, U0151, U0155, U0163, U0164, U0182, U0199, U0200, U0208, U0230, U0235, U0327, U1000, U1002, U1100, U1101, U1102, U1104, U1105, U1110, U110B, U1115, U1126, U1121, U1132 and U1133. Refer to DIAGNOSTIC TROUBLE CODE CHART troubleshooting of each system if DTCs regarding the CAN communication system are not output.

HINT

*: Use the Techstream.

1. VEHICLE BROUGHT TO WORKSHOP NEXT: Go to next step
2. CUSTOMER PROBLEM ANALYSIS Interview the customer and confirm the problem. NEXT: Go to next step
3. CHECK BATTERY Standard Voltage 11 to 14 V HINT: If the voltage is below 11 V, recharge or replace the battery before proceeding to the next step. NEXT: Go to next step
4. CHECK AND CLEAR DTCS* HINT: CAN communication DTCs are stored when there is an open or short in any of the communication wires. Any problems with the power source of a corresponding ECU or sensor, or problems in the ECU or the sensor itself also cause these DTCs to be stored. If a CAN communication wire connector is disconnected with the engine switch on (IG), the ECUs of the corresponding system and related systems store a DTC. NEXT: Go to next step
5. CHECK DLC3 BRANCH WIRE AND CAN NO. 1 BUS MAIN WIRE (CANH - CANL) NOTE: Turn the engine switch off before measuring the resistances between CAN bus main wires and between CAN bus branch wires. Turn the engine switch off before inspecting CAN bus wires for a ground short. After the engine switch is turned off, check that the key reminder warning system and light reminder warning system are not operating. Before measuring the resistance, leave the vehicle as is for at least 1 minute and do not operate the engine switch, any other switches or the doors. If any doors need to be opened in order to check connectors, open the doors and leave them open. HINT: Operating the engine switch, any other switches or a door triggers related ECU and sensor communication on the CAN. This communication will cause the resistance value to change. Even after DTCs are cleared, if a DTC is stored again after driving the vehicle for a while, the malfunction may be occurring due to vibration of the vehicle. In such a case, wiggling the ECUs or wire harness while performing the inspection below may help determine the cause of the malfunction. Turn the engine switch off. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition F17-6 (CANH) - F17-14 (CANL) Engine switch off 54 to 69 ohms TEXT IN ILLUSTRATION *1 DLC3 Result Result Proceed to OK A NG (70 ohms or higher) B NG (Below 54 ohms) C B --> GO TO OPEN IN CAN MAIN BUS WIRE. Refer to «Open in CAN Main Bus Line»(ref-400934-S05075203232011051800000) C --> GO TO SHORT IN CAN BUS LINES. Refer to «Check CAN Bus Lines for Short Circuit»(ref-400934-S07284085492011051800000) A: Go to next step
6. CHECK FOR SHORT TO GND IN CAN NO. 1 BUS (CANH, CANL - CG) Turn the engine switch off. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition F17-6 (CANH) - F17-4 (CG) Engine switch off 200 ohms or higher F17-14 (CANL) - F17-4 (CG) Engine switch off 200 ohms or higher TEXT IN ILLUSTRATION *1 DLC3 NG --> GO TO SHORT TO GND IN CAN BUS LINE. Refer to «Check CAN Bus Line for Short to GND»(ref-400934-S25293406762011051800000) OK: Go to next step
7. CHECK FOR SHORT TO +B IN CAN NO. 1 BUS (CANH, CANL - BAT) Disconnect the cable from the negative (-) battery terminal. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition F17-6 (CANH) - F17-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kohms or higher F17-14 (CANL) - F17-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kohms or higher TEXT IN ILLUSTRATION *1 DLC3 NG --> GO TO SHORT TO +B IN CAN BUS LINE. Refer to «Check CAN Bus Line for Short to +B»(ref-400934-S17846433652011051800000) OK: Go to next step
8. CHECK INSTALLED SYSTEMS (ECU AND SENSOR) THAT USE CAN COMMUNICATION Based on the vehicle equipment and specifications, confirm the systems that use CAN communication. Refer to «DIAGNOSIS SYSTEM»(ref-400834-S01955420032011051800000) . NEXT: Go to next step
9. CHECK ECUS CONNECTED TO CAN BUS* Select "CAN Bus Check" from screen on the Techstream. Refer to «DIAGNOSIS SYSTEM»(ref-400834-S01955420032011051800000) . Observe the screen for approximately 1 minute to check the ECUs and sensors displayed on the screen. Result Result Proceed to All ECUs and sensors connected to the CAN communication system are displayed on the screen. (CAN bus circuit is currently normal.) A All ECUs except the main body ECU connected to the CAN MS bus are not displayed on the screen. The main body ECU outputs DTC U1002. (Open or short in CAN MS bus main wires.) B*1 All ECUs connected to the CAN MS bus are not displayed on the screen. (Open in main body ECU branch wire or main body ECU malfunction.) C All ECUs except the power management control ECU connected to the CAN No. 2 bus are not displayed on the screen. The power management control ECU (power management1) outputs DTC U1002. (Open or short in CAN No. 2 bus main wires.) D*1 All ECUs except the power management control ECU connected to the power management bus are not displayed on the screen. The power management control ECU (power management2) outputs DTC U1002. (Open or short in power management bus main wires.) E*1 All ECUs connected to the CAN No. 2 bus and power management bus are not displayed on the screen. (Open in power management control ECU branch wires or power management control ECU malfunction.) F One of the ECUs and sensors connected to the CAN communication system is not displayed on the screen. (Open in ECU or sensor branch wires, or communication interrupted.) G Some ECUs and sensors repeatedly appear and disappear on the screen, during this check. (Open in one side of ECU or sensor branch wires.) H NOTE: The systems (ECUs and sensors) that adopt CAN communication vary depending on the vehicle and optional equipment. Check which systems (ECUs and sensors) are installed on the vehicle. Refer to «DIAGNOSIS SYSTEM»(ref-400834-S01955420032011051800000) . Non-installed ECUs or sensors will not be displayed. Do not mistake them for being in the communication stop mode. The ECUs and sensors that repeatedly appear and disappear from the screen during this check are considered normal. (The response to the Techstream and its display are affected by signals output from other ECUs which have an open circuit in either of their CAN bus branch wires.) HINT: *1: See Diagnostic Trouble Code Chart instead of Communication Stop Mode Table when some of the ECUs connected to the CAN MS bus, the CAN No. 2 bus and power management bus are not displayed on the screen. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-400834-S25744716402011051800000) . The ECUs connected to the CAN MS bus are displayed on the screen by the main body ECU. The ECUs connected to the CAN No. 2 bus are displayed on the screen by the power management control ECU. B --> GO TO U1002 (MAIN BODY). Refer to «DTC U1002: Lost Communication with Gateway Module (Main Body)»(ref-400935-S15361488932011051800000) C --> GO TO MAIN BODY ECU COMMUNICATION STOP MODE. Refer to «Main Body ECU Communication Stop Mode»(ref-400934-S20281461582011051800000) D --> GO TO U1002 (POWER MANAGEMENT1). Refer to «DTC U1002: Lost Communication with Gateway Module (Power Management1)»(ref-400935-S28363516922011051800000) E --> GO TO U1002 (POWER MANAGEMENT2). Refer to «DTC U1002: Lost Communication with Gateway Module (Power Management2)»(ref-400935-S32350553762011051800000) F --> GO TO POWER MANAGEMENT CONTROL ECU COMMUNICATION STOP MODE. Refer to «Power Management Control ECU Communication Stop Mode»(ref-400934-S12956823192011051800000) G --> GO TO COMMUNICATION STOP MODE TABLE. Refer to «PROBLEM SYMPTOMS TABLE»(ref-400834-S32610306672011051800000) H --> GO TO OPEN IN ONE SIDE OF CAN BRANCH LINE. Refer to «Open in One Side of CAN Branch Line»(ref-400934-S21382190242011051800000) A: Go to next step
10. RECHECK DTC HINT: Sometimes CAN communication system DTCs are output, but all ECUs and sensors connected to the CAN communication system are displayed on the Techstream. In this case, previous or history DTCs may indicate the cause of the problem. ECUs related to a problem in the CAN bus will store DTCs to indicate communication malfunctions. The communication stop mode in the CAN bus can be determined by comparing the combination of DTCs that have been set. Refer to 11 DTC Combination Table for the CAN bus. The main body ECU will store communication error DTCs when the ECUs connected to the CAN MS bus cannot communicate, or if a network malfunction occurs. The power management control ECU will store communication error DTCs when the ECUs connected to the CAN No. 2 bus and power management bus cannot communicate, or if a network malfunction occurs. Result Result Proceed to Communication error DTCs other than the codes output from the main body ECU and/or power management control ECU is output. (A malfunction occurred in the CAN No. 1 bus.) A The main body ECU outputs DTC 1002. (A malfunction occurred in the CAN MS bus.) B The power management control ECU (power management1) outputs DTC 1002. (A malfunction occurred in the CAN No. 2 bus.) C The power management control ECU (power management2) outputs DTC 1002. (A malfunction occurred in the power management bus.) D The main body ECU or power management ECU output DTCs other than DTC 1002. (A malfunction occurred in an ECU branch wire connected to the CAN No. 2 bus, CAN MS bus or power management bus.) E B --> GO TO U1002 (MAIN BODY). Refer to «DTC U1002: Lost Communication with Gateway Module (Main Body)»(ref-400935-S15361488932011051800000) C --> GO TO U1002 (POWER MANAGEMENT1). Refer to «DTC U1002: Lost Communication with Gateway Module (Power Management1)»(ref-400935-S28363516922011051800000) D --> GO TO U1002 (POWER MANAGEMENT2). Refer to «DTC U1002: Lost Communication with Gateway Module (Power Management2)»(ref-400935-S32350553762011051800000) E --> GO TO DIAGNOSTIC TROUBLE CODE CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-400834-S25744716402011051800000) A: Go to next step
11. DTC COMBINATION TABLE Confirm trouble according to the combination of output DTCs regarding the CAN communication system. Refer to «DIAGNOSIS SYSTEM»(ref-400834-S01955420032011051800000) . HINT: Previous CAN communication system DTCs may be the cause if CAN communication system DTCs are output and all ECUs and sensors connected to the CAN communication system are displayed on "CAN Bus Check" of the Techstream. NEXT: Go to next step
12. CIRCUIT INSPECTION NEXT: Go to next step
13. IDENTIFICATION OF PROBLEM NEXT: Go to next step
14. REPAIR OR REPLACEMENT NEXT: Go to next step
15. CONFIRMATION TEST* NEXT --> END

PROBLEM SYMPTOMS TABLE

HINT

1. Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.
2. Inspect the fuses and relays related to this system before inspecting the suspected areas below.

RESULT OF CAN NO. 1 BUS CHECK

HINT

Refer to below on How to Proceed with Troubleshooting for the CAN No. 1 Bus Check procedure.

COMMUNICATION STOP MODE TABLE

HINT

1. Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.
2. Inspect the fuses and relays related to this system before inspecting the suspected areas below.

RESULT OF CAN NO. 1 BUS CHECK

HINT

Refer to HOW TO PROCEED WITH TROUBLESHOOTING How to Proceed with Troubleshooting for the CAN No. 1 Bus Check procedure.

COMMUNICATION STOP MODE TABLE

DIAGNOSIS SYSTEM

1. ECUS OR SENSORS WHICH COMMUNICATE THROUGH CAN COMMUNICATION SYSTEM CAN No. 1 Bus ECM Main body ECU (Multiplex network body ECU) Combination meter Power steering ECU Center airbag sensor assembly Skid control ECU (Brake actuator assembly) Steering angle sensor Yaw rate sensor Certification ECU (Smart key ECU) Power management control ECU Navigation ECU (Display and navigation module display)*1 CAN No. 2 Bus AFS ECU (Headlight swivel ECU) 4WD control ECU*2 Suspension control ECU*3 Driving support ECU*4 Seat belt control ECU*5 Parking assist ECU*6 Clearance warning ECU*7 CAN MS Bus Tilt and telescopic ECU (Multiplex tilt and telescopic ECU) Outer mirror control ECU RH Outer mirror control ECU LH Position control ECU LH*8 Power back door ECU (Back door motor unit)*9 Power management Bus Air conditioning amplifier HINT: *1: w/ Navigation system *2: for AWD *3: w/ Air suspension system *4: w/ Dynamic radar cruise control system *5: w/ Pre-collision system *6: w/ Parking assist monitor system *7: w/ Intuitive parking assist system *8: w/ Position memory system *9: w/ Power back door system
2. CHECK FOR INSTALLED SYSTEMS (ECUS AND SENSORS) THAT ADOPT CAN COMMUNICATION The systems (ECUs and sensors) that adopt CAN communication vary depending on the vehicle and optional equipment. Check which systems (ECUs and sensors) are installed on the vehicle. ECU/Sensor Name Techstream Display Applicability ECM Engine ECT Installed on all vehicles Main body ECU Main Body Installed on all vehicles Combination meter Combination Meter Installed on all vehicles Power steering ECU EPS Installed on all vehicles Air conditioning amplifier Air Conditioner Installed on all vehicles Center airbag sensor assembly SRS Airbag Installed on all vehicles Skid control ECU ABS/VSC/TRAC Installed on all vehicles Steering angle sensor Steering Angle Sensor Installed on all vehicles Yaw rate sensor Yaw Rate/Deceleration Sensor Installed on all vehicles Certification ECU Smart Access/Smart Key/Wireless Tuner Installed on all vehicles Power management ECU Electric Power Control Power Management1 Power Management2 Installed on all vehicles AFS ECU AFS/HL AutoLeveling Installed on all vehicles Multiplex tilt and telescopic ECU Tilt and Telescopic Installed on all vehicles Outer mirror control ECU RH Mirror R Installed on all vehicles Outer mirror control ECU LH Mirror L Installed on all vehicles Display and navigation module display AVN1 w/ Navigation system 4WD control ECU Four Wheel Drive Control AWD vehicles Suspension control ECU Air Suspension/AHC/EMS1 w/ Air suspension Driving support ECU Cruise Control (ACC) w/ Dynamic radar cruise control system Seat belt control ECU Pre-collision1 w/ Pre-collision system Parking assist ECU Parking Assist Monitor Intuitive Parking Assist* w/ Parking assist monitor system (*: w/ parking assist monitor and intuitive parking assist system) Clearance warning ECU Intuitive Parking Assist w/ Intuitive parking assist system Position control ECU LH D-Seat w/ Position memory system Power back door ECU Power Back Door w/ Power back door system
3. CAN BUS CHECK HINT: The ECUs and sensors that are properly connected to the CAN communication system can be displayed using the Techstream. Using the Techstream, select "CAN Bus Check" from "System Select".
4. DTC TABLE BY ECU HINT: In the CAN communication system, CAN communication system DTCs can be displayed by the ECU using the Techstream. If CAN communication system DTCs are output, trouble cannot be determined only by the DTCs. Perform troubleshooting according to How to Proceed with Troubleshooting. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-400834-S14071915672011051800000) . ECM / Techstream Display "Engine" DTC Code Detection Item U0100*2 Lost Communication with ECM/PCM "A" U0101*1 Lost Communication with Transfer Case Control Module U0122*2 Lost Communication with Vehicle Dynamics Control Module U0123*2 Lost Communication with Yaw Rate Sensor Module U0126*2 Lost Communication with Steering Angle Sensor Module U0235*2, 3 Lost Communication with Cruise Control Front Distance Range Sensor U1102*2, 3 Lost Communication with Radar Sensor U1104 Lost Communication with Driving Support ECU HINT: DTC communication uses the CAN communication system. *1: The ECM is malfunctioning if only U0101 is output. Refer to SFI System. Refer to «DTC U0101: Lost Communication with TCM»(ref-400785-S32336933382011051800000) . *2: Dynamic radar cruise control system DTC *3: If U0235 or U1102 is output alone, the CAN communication is normal. Refer to «DTC U0235: Lost Communication with Cruise Control Front Distance Range Sensor»(ref-400838-S30752950222011051800000) for U0235. Refer to «DTC U1102: Lost Communication with Radar Sensor»(ref-400838-S06245353922011051800000) for U1102). TCM / Techstream Display "ECT" DTC Code Detection Item U0100*4 Lost Communication with ECM / PCM "A" HINT: DTC communication uses the CAN communication system. *4: The ECM is malfunctioning if only U0100 is output. Refer to Automatic Transaxle System (U660E: Refer to «DTC U0100: Lost Communication with ECM / PCM "A"»(ref-400836-S02634107982011051800000) , U660F: Refer to «DTC U0100: Lost Communication with ECM / PCM "A"»(ref-400806-S31812875812011051800000) ). Main Body ECU (Multiplex Network Body ECU) / Techstream Display "Main Body" DTC Code Detection Item U0100 Lost Communication with ECM/ PCM "A" U0101 Lost Communication with TCM U0151 Lost Communication with Restraints Control Module U0155 Lost Communication with Instrument Panel Cluster U0163 Lost Communication with Navigation Control Module U0164 Lost Communication with HVAC Control Module U0182 Lost Communication with AFS U0199 Lost Communication with "Door Control Module A" U0200 Lost Communication with "Door Control Module B" U0208 Lost Communication with "Seat Control Module A" U0209 Lost Communication with "Seat Control Module B" U0230 Lost Communication with Rear Gate Module U0327 Software Incompatibility with Vehicle Security U1002 Lost Communication with Gateway Module (Main body ECU) U1110 Lost Communication with Clearance Sonar Module U1115 Lost Communication with Tilt and Telescopic Module U1126 Lost Communication with Parking Assist Monitor Module U1133 Lost Communication with PMN Module HINT: DTC communication uses the CAN communication system. Combination Meter / Techstream Display "Combination Meter" DTC Code Detection Item U0100 Lost Communication with ECM / PCM "A" U0129 Lost Communication with Brake System Control Module HINT: DTC communication uses the CAN communication system. Power Steering ECU / Techstream Display "EPS" DTC Code Detection Item U0100 Lost Communication with ECM / PCM "A" U0129 Lost Communication with Brake System Control Module U1104 Lost Communication with Driving Support ECU HINT: DTC communication uses the CAN communication system. Center Airbag Sensor Assembly / Techstream Display "SRS Airbag" HINT: The center airbag sensor assembly is connected to the CAN communication system, but CAN communication DTCs are not output. Skid control ECU (Brake Actuator) / Techstream Display "ABS/VSC/TRAC" DTC Code Detection Item U0073 Control Module Communication Bus OFF U0100 Lost Communication with ECM / PCM U0123 Lost Communication with Yaw Rate Sensor Module U0124 Lost Communication with Lateral Acceleration Sensor Module U0126 Lost Communication with Steering Angle Sensor Module HINT: DTC communication uses the CAN communication system. Steering Angle Sensor / Techstream Display "Steering Angle Sensor" HINT: The steering angle sensor is connected to the CAN communication system, but CAN communication DTCs are not output. Yaw Rate Sensor / Techstream Display "Yaw Rate / Deceleration Sensor" HINT: The yaw rate and acceleration sensor is connected to the CAN communication system, but CAN communication DTCs are not output. Certification ECU / Techstream Display "Smart Access/ Smart Key/ Wireless Tuner" HINT: The certification ECU (smart key ECU assembly) is connected to the CAN communication system, but CAN communication DTCs are not output. Navigation ECU (Display and navigation module display) / Techstream Display "AVN1" DTC Code Detection Item U0073 Sending Malfunction (Navigation to APGS) U0155 Meter ECU Communication U0164 Air Conditioner ECU Communication U1110 Clearance Sonar ECU Communication HINT: DTC communication uses the CAN communication system. Power Management Control ECU / Techstream Display "Electric Power Control" DTC Code Detection Item U0100 Lost Communication with ECM / PCM HINT: DTC communication uses the CAN communication system. "Electric Power Control" output DTC is communication error in the CAN No. 1 bus. Power Management Control ECU / Techstream Display "Power Management1" DTC Code Detection Item U0104 Lost Communication with Cruise Control Module U0114 Lost Communication with Four-Wheel Drive Clutch Control Module U0132 Lost Communication Ride Level Control Module U0182 Lost Communication with Lighting Control Module U1002 Lost Communication with Gateway Module U1100 Lost Communication with Pre-Clash Module U1110 Lost Communication with Clearance Sonar Module U110B Lost Communication with Parking Assist Control Module "B" HINT: DTC communication uses the CAN communication system. "Power Management1" output DTC is communication error in the CAN No. 2 bus. Power Management Control ECU / Techstream Display "Power Management2" DTC Code Detection Item U0100 Lost Communication with ECM / PCM U0164 Lost Communication with HVAC Control Module U1002 Lost Communication with Gateway Module HINT: DTC communication uses the CAN communication system. "Power Management2" output DTC is communication error in the power management bus. Air Conditioning Amplifier / Techstream Display "Air Conditioner" DTC Code Detection Item U0100 Communication Malfunction (Engine ECU) U0101 Lost Communication with TCM U0131 Communication Malfunction (Electric Power Steering ECU) U0142 Communication Malfunction (Main body ECU) U0155 Communication Malfunction (Meter ECU) U0163 Communication Malfunction (Navigation ECU) HINT: DTC communication uses the CAN communication system. DTCs can be checked using the air conditioning control panel (DTC 99 is output). AFS ECU (Headlight swivel ECU) / Techstream Display "AFS/HL AutoLeveling" DTC Code Detection Item U0073 Control Module Communication Bus OFF U0100 Lost Communication with ECM / PCM U0101 Lost Communication with TCM U0123 Lost Communication with Yaw Rate Sensor Module U0126 Lost Communication with Steering Angle Sensor Module U0129 Lost Communication with Brake System Control Module U0142 Lost Communication with Body Control Module U0163 Lost Communication with Navigation Control Module U1000*5 CAN Communication Failure (Message Registry) U1121*6 Lost Communication with Driver Seat Module HINT: DTC communication uses the CAN communication system. *5: The AFS ECU is malfunctioning if U1000 is output. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-400862-S06497858022011051800000) the appropriate lighting system. *6: Communication error with steering pad switch. 4WD Control ECU / Techstream Display "Four Wheel Drive Control" DTC Code Detection Item U0073 Control Module Communication Bus OFF U0100 Lost Communication with ECM / PCM U0129 Lost Communication with Brake System Control Module C1297 Steering Angle Sensor HINT: DTC communication uses the CAN communication system. Suspension Control ECU / Techstream Display "Air Suspension/AHC/EMS1" DTC Code Detection Item U0100 Lost Communication with ECM / PCM "A" U0101 Lost Communication with TCM U0122 Lost Communication with Vehicle Dynamics Control Module U0124 Lost Communication Lateral Acceleration Sensor Module U0140 Lost Communication Body Control Module HINT: DTC communication uses the CAN communication system. Driving Support ECU / Techstream Display "Cruise Control (ACC)" HINT: Driving support ECU DTCs are output by the ECM. Seat Belt Control ECU / Techstream Display "Pre-collision1" DTC Code Detection Item U0100 Lost Communication with ECM/PCM "A" U0122 Lost Communication with Vehicle Dynamics Control Module U0123 Lost Communication with Yaw Rate Sensor Module U0126 Lost Communication with Steering Angle Sensor Module U0140 Lost Communication with J/B ECU U0151 Lost Communication with Airbag ECU U0235*7 Lost Communication with Gateway ECU U1101 Lost Communication with Distance Control ECU U1102*7 Lost Communication with Radar Sensor U1104*7 Lost Communication with Driving Support ECU HINT: DTC communication uses the CAN communication system. *7: If U0235, U1102 or U1104 is output alone, CAN communication is normal. Parking Assist ECU / Techstream Display "Parking Assist Monitor" DTC Code Detection Item U0073 Control Module Communication Bus Off U0100 Lost Communication with ECM/PCM "A" U0126 Lost Communication with Steering Angle Sensor Module U0129 Lost Communication with Brake System Control Module U0140 Lost Communication with Body Control Module HINT: DTC communication uses the CAN communication system. Clearance Warning ECU / Techstream Display "Intuitive Parking Assist " DTC Code Detection Item U0101 Lost Communication with TCM U0142 Lost Communication with Body Control Module "B" U0155 Lost Communication with Instrument Panel Cluster (IPC) Control Module HINT: DTC communication uses the CAN communication system. Tilt and telescopic ECU (Multiplex Tilt and Telescopic ECU) / Techstream Display "Tilt and Telescopic" HINT: The multiplex tilt and telescopic ECU is connected to the CAN communication system, but CAN communication DTCs are not output. Outer Mirror Control ECU RH / Techstream Display "Mirror R" DTC Code Detection Item U0142 Lost Communication with Body Control Module HINT: DTC communication uses the CAN communication system. Outer Mirror Control ECU LH / Techstream Display "Mirror L" DTC Code Detection Item U0142 Lost Communication with Body Control Module HINT: DTC communication uses the CAN communication system. Position control ECU / Techstream Display "D-Seat" HINT: The position control ECU is connected to the CAN communication system, but CAN communication DTCs are not output. Power Back Door ECU (Back Door Motor Unit) / Techstream Display "Power Back Door" HINT: The back door motor unit (power back door ECU) is connected to the CAN communication system, but CAN communication DTCs are not output.
5. DTC COMBINATION TABLE CAN No. 1 Bus DTC Trouble Mode Output ECU Output DTC ECM Communication Stop Mode Skid Control ECU Communication Stop Mode Steering Angle Sensor Communication Stop Mode Yaw Rate Sensor Communication Stop Mode Skid control ECU U0073 X o*1, 3 X X U0100 o o*1 X X U0123 X o*1 X o U0124 X o*1 X o U0126 X o*1 o X Power steering ECU U0100 o X X X U0129 X o X X Power management control ECU (Electric Power Control) U0100 o X X X U0129 X o X X Combination meter U0100 o X X X U0129 X o X X Main body ECU U0100 o X X X U0101 o X X X U0151 X X X X U0155 X X X X U0163 X X X X U0327 X X X X U1133 X X X X Navigation ECU U0073 X X X X U0155 X X X X DTC Trouble Mode Output ECU Output DTC Certification ECU Communication Stop Mode Power Steering ECU Communication Stop Mode Power Management ECU Communication Stop Mode Center Airbag Sensor Communication Stop Mode Skid control ECU U0073 X X X X U0100 X X X X U0123 X X X X U0124 X X X X U0126 X X X X Power steering ECU U0100 X o*1 X X U0129 X o*1 X X Power management control ECU (Electric Power Control) U0100 X X o*1 X U0129 X X o*1 X Combination meter U0100 X X X X U0129 X X X X Main body ECU U0100 X X X X U0101 X X X X U0151 X X X o U0155 X X X X U0163 X X X X U0327 o X X X U1133 X X o X Navigation ECU U0073 X X X X U0155 X X X X DTC - Output ECU Output DTC Combination Meter ECU Communication Stop Mode Navigation ECU Communication Stop Mode Main Body ECU Communication Stop Mode Skid control ECU U0073 X X X U0100 X X X U0123 X X X U0124 X X X U0126 X X X Power steering ECU U0100 X X X U0129 X X X Power management control ECU (Electric Power Control) U0100 X X X U0129 X X X Combination meter U0100 o*1 X X U0129 o*1 X X Main body ECU U0100 X X o*2 U0101 X X o*2 U0151 X X o*2 U0155 o X o*2 U0163 X o o*2 U0327 X X o*2 U1133 X X o*2 Navigation ECU U0073 X o*1 X U0155 o o*1 X HINT: o: Set X: Not set or may be set according to the malfunctioning part when one side of the CAN branch wire opens. *1: DTC is not output during communication error, but will be output as a history DTC (past DTC) when communication returns to normal. *2: DTC is not output during communication error. *3: DTC U0100, U0123, U0124 and U0126 are not stored when DTC U0073 has already been stored. Skid Control ECU Communication Stop Mode. Refer to «Skid Control ECU Communication Stop Mode»(ref-400934-S31290657192011051800000) Power Steering ECU Communication Stop Mode. Refer to «Power Steering ECU Communication Stop Mode»(ref-400934-S34049029882011051800000) Steering Angle Sensor Communication Stop Mode. Refer to «Steering Angle Sensor Communication Stop Mode»(ref-400934-S39383574012011051800000) Yaw Rate Sensor Communication Stop Mode. Refer to «Yaw Rate Sensor Communication Stop Mode»(ref-400934-S24503761472011051800000) ECM Communication Stop Mode. Refer to «ECM Communication Stop Mode»(ref-400934-S16505488072011051800000) Main Body ECU Communication Stop Mode. Refer to «Main Body ECU Communication Stop Mode»(ref-400934-S04429073262011051800000) Combination Meter ECU Communication Stop Mode. Refer to «Combination Meter ECU Communication Stop Mode»(ref-400934-S35528856102011051800000) Center Airbag Sensor Communication Stop Mode. Refer to «Center Airbag Sensor Communication Stop Mode»(ref-400934-S34239694782011051800000) Certification ECU Communication Stop Mode. Refer to «Certification ECU Communication Stop Mode»(ref-400934-S39281953502011051800000) Power Management ECU Communication Stop Mode. Refer to «Power Management Control ECU Communication Stop Mode»(ref-400934-S37961057362011051800000)

1. ECUS OR SENSORS WHICH COMMUNICATE THROUGH CAN COMMUNICATION SYSTEM CAN No. 1 Bus ECM Main body ECU (Multiplex network body ECU) Combination meter Power steering ECU Center airbag sensor assembly Skid control ECU (Brake actuator assembly) Steering angle sensor Yaw rate sensor Certification ECU (Smart key ECU) Power management control ECU Navigation ECU (Display and navigation module display)*1 CAN No. 2 Bus AFS ECU (Headlight swivel ECU) 4WD control ECU*2 Suspension control ECU*3 Driving support ECU*4 Seat belt control ECU*5 Parking assist ECU*6 Clearance warning ECU*7 CAN MS Bus Tilt and telescopic ECU (Multiplex tilt and telescopic ECU) Outer mirror control ECU RH Outer mirror control ECU LH Position control ECU LH*8 Power back door ECU (Back door motor unit)*9 Power management Bus Air conditioning amplifier HINT: *1: w/ Navigation system *2: for AWD *3: w/ Air suspension system *4: w/ Dynamic radar cruise control system *5: w/ Pre-collision system *6: w/ Parking assist monitor system *7: w/ Intuitive parking assist system *8: w/ Position memory system *9: w/ Power back door system
2. CHECK FOR INSTALLED SYSTEMS (ECUS AND SENSORS) THAT ADOPT CAN COMMUNICATION The systems (ECUs and sensors) that adopt CAN communication vary depending on the vehicle and optional equipment. Check which systems (ECUs and sensors) are installed on the vehicle. ECU/Sensor Name Techstream Display Applicability ECM Engine ECT Installed on all vehicles Main body ECU Main Body Installed on all vehicles Combination meter Combination Meter Installed on all vehicles Power steering ECU EPS Installed on all vehicles Air conditioning amplifier Air Conditioner Installed on all vehicles Center airbag sensor assembly SRS Airbag Installed on all vehicles Skid control ECU ABS/VSC/TRAC Installed on all vehicles Steering angle sensor Steering Angle Sensor Installed on all vehicles Yaw rate sensor Yaw Rate/Deceleration Sensor Installed on all vehicles Certification ECU Smart Access/Smart Key/Wireless Tuner Installed on all vehicles Power management ECU Electric Power Control Power Management1 Power Management2 Installed on all vehicles AFS ECU AFS/HL AutoLeveling Installed on all vehicles Multiplex tilt and telescopic ECU Tilt and Telescopic Installed on all vehicles Outer mirror control ECU RH Mirror R Installed on all vehicles Outer mirror control ECU LH Mirror L Installed on all vehicles Display and navigation module display AVN1 w/ Navigation system 4WD control ECU Four Wheel Drive Control AWD vehicles Suspension control ECU Air Suspension/AHC/EMS1 w/ Air suspension Driving support ECU Cruise Control (ACC) w/ Dynamic radar cruise control system Seat belt control ECU Pre-collision1 w/ Pre-collision system Parking assist ECU Parking Assist Monitor Intuitive Parking Assist* w/ Parking assist monitor system (*: w/ parking assist monitor and intuitive parking assist system) Clearance warning ECU Intuitive Parking Assist w/ Intuitive parking assist system Position control ECU LH D-Seat w/ Position memory system Power back door ECU Power Back Door w/ Power back door system
3. CAN BUS CHECK HINT: The ECUs and sensors that are properly connected to the CAN communication system can be displayed using the Techstream. Using the Techstream, select "CAN Bus Check" from "System Select".
4. DTC TABLE BY ECU HINT: In the CAN communication system, CAN communication system DTCs can be displayed by the ECU using the Techstream. If CAN communication system DTCs are output, trouble cannot be determined only by the DTCs. Perform troubleshooting according to How to Proceed with Troubleshooting. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-400834-S34883510432011051800000) . ECM / Techstream Display "Engine" DTC Code Detection Item U0100*2 Lost Communication with ECM/PCM "A" U0101*1 Lost Communication with Transfer Case Control Module U0122*2 Lost Communication with Vehicle Dynamics Control Module U0123*2 Lost Communication with Yaw Rate Sensor Module U0126*2 Lost Communication with Steering Angle Sensor Module U0235*2, 3 Lost Communication with Cruise Control Front Distance Range Sensor U1102*2, 3 Lost Communication with Radar Sensor U1104 Lost Communication with Driving Support ECU HINT: DTC communication uses the CAN communication system. *1: The ECM is malfunctioning if only U0101 is output. Refer to SFI System. Refer to «DTC U0101: Lost Communication with TCM»(ref-400785-S34325562242011051800000) . *2: Dynamic radar cruise control system DTC *3: If U0235 or U1102 is output alone, the CAN communication is normal. Refer to «DTC U0235: Lost Communication with Cruise Control Front Distance Range Sensor»(ref-400838-S36680262502011051800000) for U0235. Refer to «DTC U1102: Lost Communication with Radar Sensor»(ref-400838-S00482323142011051800000) for U1102). TCM / Techstream Display "ECT" DTC Code Detection Item U0100*4 Lost Communication with ECM / PCM "A" HINT: DTC communication uses the CAN communication system. *4: The ECM is malfunctioning if only U0100 is output. Refer to Automatic Transaxle System (U660E: Refer to «DTC U0100: Lost Communication with ECM / PCM "A"»(ref-400806-S31570214882011051800000) , U660F: Refer to «DTC U0100: Lost Communication with ECM / PCM "A"»(ref-400836-S16835500092011051800000) ). Main Body ECU (Multiplex Network Body ECU) / Techstream Display "Main Body" DTC Code Detection Item U0100 Lost Communication with ECM/ PCM "A" U0101 Lost Communication with TCM U0151 Lost Communication with Restraints Control Module U0155 Lost Communication with Instrument Panel Cluster U0163 Lost Communication with Navigation Control Module U0164 Lost Communication with HVAC Control Module U0182 Lost Communication with AFS U0199 Lost Communication with "Door Control Module A" U0200 Lost Communication with "Door Control Module B" U0208 Lost Communication with "Seat Control Module A" U0209 Lost Communication with "Seat Control Module B" U0230 Lost Communication with Rear Gate Module U0327 Software Incompatibility with Vehicle Security U1002 Lost Communication with Gateway Module (Main body ECU) U1110 Lost Communication with Clearance Sonar Module U1115 Lost Communication with Tilt and Telescopic Module U1126 Lost Communication with Parking Assist Monitor Module U1133 Lost Communication with PMN Module HINT: DTC communication uses the CAN communication system. Combination Meter / Techstream Display "Combination Meter" DTC Code Detection Item U0100 Lost Communication with ECM / PCM "A" U0129 Lost Communication with Brake System Control Module HINT: DTC communication uses the CAN communication system. Power Steering ECU / Techstream Display "EPS" DTC Code Detection Item U0100 Lost Communication with ECM / PCM "A" U0129 Lost Communication with Brake System Control Module U1104 Lost Communication with Driving Support ECU HINT: DTC communication uses the CAN communication system. Center Airbag Sensor Assembly / Techstream Display "SRS Airbag" HINT: The center airbag sensor assembly is connected to the CAN communication system, but CAN communication DTCs are not output. Skid control ECU (Brake Actuator) / Techstream Display "ABS/VSC/TRAC" DTC Code Detection Item U0073 Control Module Communication Bus OFF U0100 Lost Communication with ECM / PCM U0123 Lost Communication with Yaw Rate Sensor Module U0124 Lost Communication with Lateral Acceleration Sensor Module U0126 Lost Communication with Steering Angle Sensor Module HINT: DTC communication uses the CAN communication system. Steering Angle Sensor / Techstream Display "Steering Angle Sensor" HINT: The steering angle sensor is connected to the CAN communication system, but CAN communication DTCs are not output. Yaw Rate Sensor / Techstream Display "Yaw Rate / Deceleration Sensor" HINT: The yaw rate and acceleration sensor is connected to the CAN communication system, but CAN communication DTCs are not output. Certification ECU / Techstream Display "Smart Access/ Smart Key/ Wireless Tuner" HINT: The certification ECU (smart key ECU assembly) is connected to the CAN communication system, but CAN communication DTCs are not output. Navigation ECU (Display and navigation module display) / Techstream Display "AVN1" DTC Code Detection Item U0073 Sending Malfunction (Navigation to APGS) U0155 Meter ECU Communication U0164 Air Conditioner ECU Communication U1110 Clearance Sonar ECU Communication HINT: DTC communication uses the CAN communication system. Power Management Control ECU / Techstream Display "Electric Power Control" DTC Code Detection Item U0100 Lost Communication with ECM / PCM HINT: DTC communication uses the CAN communication system. "Electric Power Control" output DTC is communication error in the CAN No. 1 bus. Power Management Control ECU / Techstream Display "Power Management1" DTC Code Detection Item U0104 Lost Communication with Cruise Control Module U0114 Lost Communication with Four-Wheel Drive Clutch Control Module U0132 Lost Communication Ride Level Control Module U0182 Lost Communication with Lighting Control Module U1002 Lost Communication with Gateway Module U1100 Lost Communication with Pre-Clash Module U1110 Lost Communication with Clearance Sonar Module U110B Lost Communication with Parking Assist Control Module "B" HINT: DTC communication uses the CAN communication system. "Power Management1" output DTC is communication error in the CAN No. 2 bus. Power Management Control ECU / Techstream Display "Power Management2" DTC Code Detection Item U0100 Lost Communication with ECM / PCM U0164 Lost Communication with HVAC Control Module U1002 Lost Communication with Gateway Module HINT: DTC communication uses the CAN communication system. "Power Management2" output DTC is communication error in the power management bus. Air Conditioning Amplifier / Techstream Display "Air Conditioner" DTC Code Detection Item U0100 Communication Malfunction (Engine ECU) U0101 Lost Communication with TCM U0131 Communication Malfunction (Electric Power Steering ECU) U0142 Communication Malfunction (Main body ECU) U0155 Communication Malfunction (Meter ECU) U0163 Communication Malfunction (Navigation ECU) HINT: DTC communication uses the CAN communication system. DTCs can be checked using the air conditioning control panel (DTC 99 is output). AFS ECU (Headlight swivel ECU) / Techstream Display "AFS/HL AutoLeveling" DTC Code Detection Item U0073 Control Module Communication Bus OFF U0100 Lost Communication with ECM / PCM U0101 Lost Communication with TCM U0123 Lost Communication with Yaw Rate Sensor Module U0126 Lost Communication with Steering Angle Sensor Module U0129 Lost Communication with Brake System Control Module U0142 Lost Communication with Body Control Module U0163 Lost Communication with Navigation Control Module U1000*5 CAN Communication Failure (Message Registry) U1121*6 Lost Communication with Driver Seat Module HINT: DTC communication uses the CAN communication system. *5: The AFS ECU is malfunctioning if U1000 is output. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-400862-S03561698412011051800000) the lighting system. *6: Communication error with steering pad switch. 4WD Control ECU / Techstream Display "Four Wheel Drive Control" DTC Code Detection Item U0073 Control Module Communication Bus OFF U0100 Lost Communication with ECM / PCM U0129 Lost Communication with Brake System Control Module C1297 Steering Angle Sensor HINT: DTC communication uses the CAN communication system. Suspension Control ECU / Techstream Display "Air Suspension/AHC/EMS1" DTC Code Detection Item U0100 Lost Communication with ECM / PCM "A" U0101 Lost Communication with TCM U0122 Lost Communication with Vehicle Dynamics Control Module U0124 Lost Communication Lateral Acceleration Sensor Module U0140 Lost Communication Body Control Module HINT: DTC communication uses the CAN communication system. Driving Support ECU / Techstream Display "Cruise Control (ACC)" HINT: Driving support ECU DTCs are output by the ECM. Seat Belt Control ECU / Techstream Display "Pre-collision1" DTC Code Detection Item U0100 Lost Communication with ECM/PCM "A" U0122 Lost Communication with Vehicle Dynamics Control Module U0123 Lost Communication with Yaw Rate Sensor Module U0126 Lost Communication with Steering Angle Sensor Module U0140 Lost Communication with J/B ECU U0151 Lost Communication with Airbag ECU U0235*7 Lost Communication with Gateway ECU U1101 Lost Communication with Distance Control ECU U1102*7 Lost Communication with Radar Sensor U1104*7 Lost Communication with Driving Support ECU HINT: DTC communication uses the CAN communication system. *7: If U0235, U1102 or U1104 is output alone, CAN communication is normal. Parking Assist ECU / Techstream Display "Parking Assist Monitor" DTC Code Detection Item U0073 Control Module Communication Bus Off U0100 Lost Communication with ECM/PCM "A" U0126 Lost Communication with Steering Angle Sensor Module U0129 Lost Communication with Brake System Control Module U0140 Lost Communication with Body Control Module HINT: DTC communication uses the CAN communication system. Clearance Warning ECU / Techstream Display "Intuitive Parking Assist " DTC Code Detection Item U0101 Lost Communication with TCM U0142 Lost Communication with Body Control Module "B" U0155 Lost Communication with Instrument Panel Cluster (IPC) Control Module HINT: DTC communication uses the CAN communication system. Tilt and telescopic ECU (Multiplex Tilt and Telescopic ECU) / Techstream Display "Tilt and Telescopic" HINT: The multiplex tilt and telescopic ECU is connected to the CAN communication system, but CAN communication DTCs are not output. Outer Mirror Control ECU RH / Techstream Display "Mirror R" DTC Code Detection Item U0142 Lost Communication with Body Control Module HINT: DTC communication uses the CAN communication system. Outer Mirror Control ECU LH / Techstream Display "Mirror L" DTC Code Detection Item U0142 Lost Communication with Body Control Module HINT: DTC communication uses the CAN communication system. Position control ECU / Techstream Display "D-Seat" HINT: The position control ECU is connected to the CAN communication system, but CAN communication DTCs are not output. Power Back Door ECU (Back Door Motor Unit) / Techstream Display "Power Back Door" HINT: The back door motor unit (power back door ECU) is connected to the CAN communication system, but CAN communication DTCs are not output.
5. DTC COMBINATION TABLE CAN No. 1 Bus DTC Trouble Mode Output ECU Output DTC ECM Communication Stop Mode Skid Control ECU Communication Stop Mode Steering Angle Sensor Communication Stop Mode Yaw Rate Sensor Communication Stop Mode Skid control ECU U0073 X o*1, 3 X X U0100 o o*1 X X U0123 X o*1 X o U0124 X o*1 X o U0126 X o*1 o X Power steering ECU U0100 o X X X U0129 X o X X Power management control ECU (Electric Power Control) U0100 o X X X U0129 X o X X Combination meter U0100 o X X X U0129 X o X X Main body ECU U0100 o X X X U0101 o X X X U0151 X X X X U0155 X X X X U0163 X X X X U0327 X X X X U1133 X X X X Navigation ECU U0073 X X X X U0155 X X X X DTC Trouble Mode Output ECU Output DTC Certification ECU Communication Stop Mode Power Steering ECU Communication Stop Mode Power Management ECU Communication Stop Mode Center Airbag Sensor Communication Stop Mode Skid control ECU U0073 X X X X U0100 X X X X U0123 X X X X U0124 X X X X U0126 X X X X Power steering ECU U0100 X o*1 X X U0129 X o*1 X X Power management control ECU (Electric Power Control) U0100 X X o*1 X U0129 X X o*1 X Combination meter U0100 X X X X U0129 X X X X Main body ECU U0100 X X X X U0101 X X X X U0151 X X X o U0155 X X X X U0163 X X X X U0327 o X X X U1133 X X o X Navigation ECU U0073 X X X X U0155 X X X X DTC - Output ECU Output DTC Combination Meter ECU Communication Stop Mode Navigation ECU Communication Stop Mode Main Body ECU Communication Stop Mode Skid control ECU U0073 X X X U0100 X X X U0123 X X X U0124 X X X U0126 X X X Power steering ECU U0100 X X X U0129 X X X Power management control ECU (Electric Power Control) U0100 X X X U0129 X X X Combination meter U0100 o*1 X X U0129 o*1 X X Main body ECU U0100 X X o*2 U0101 X X o*2 U0151 X X o*2 U0155 o X o*2 U0163 X o o*2 U0327 X X o*2 U1133 X X o*2 Navigation ECU U0073 X o*1 X U0155 o o*1 X HINT: o: Set X: Not set or may be set according to the malfunctioning part when one side of the CAN branch wire opens. *1: DTC is not output during communication error, but will be output as a history DTC (past DTC) when communication returns to normal. *2: DTC is not output during communication error. *3: DTC U0100, U0123, U0124 and U0126 are not stored when DTC U0073 has already been stored. Skid Control ECU Communication Stop Mode. Refer to «Skid Control ECU Communication Stop Mode»(ref-400934-S25717069012011051800000) Power Steering ECU Communication Stop Mode. Refer to «Power Steering ECU Communication Stop Mode»(ref-400934-S33426967552011051800000) Steering Angle Sensor Communication Stop Mode. Refer to «Steering Angle Sensor Communication Stop Mode»(ref-400934-S05283395052011051800000) Yaw Rate Sensor Communication Stop Mode. Refer to «Yaw Rate Sensor Communication Stop Mode»(ref-400934-S12263318372011051800000) ECM Communication Stop Mode. Refer to «ECM Communication Stop Mode»(ref-400934-S30071081472011051800000) Main Body ECU Communication Stop Mode. Refer to «Main Body ECU Communication Stop Mode»(ref-400934-S20281461582011051800000) Combination Meter ECU Communication Stop Mode. Refer to «Combination Meter ECU Communication Stop Mode»(ref-400934-S39848259082011051800000) Center Airbag Sensor Communication Stop Mode. Refer to «Center Airbag Sensor Communication Stop Mode»(ref-400934-S03035192182011051800000) Certification ECU Communication Stop Mode. Refer to «Certification ECU Communication Stop Mode»(ref-400934-S39281953502011051800000) Power Management ECU Communication Stop Mode. Refer to «Power Management Control ECU Communication Stop Mode»(ref-400934-S12956823192011051800000)

DIAGNOSTIC TROUBLE CODE CHART

POWER MANAGEMENT CONTROL ECU OUTPUT DTCS (TECHSTREAM DISPLAY/POWER MANAGEMENT1)

POWER MANAGEMENT CONTROL ECU OUTPUT DTCS (TECHSTREAM DISPLAY/POWER MANAGEMENT2)

MAIN BODY ECU OUTPUT DTCS (TECHSTREAM DISPLAY/MAIN BODY)

POWER MANAGEMENT CONTROL ECU OUTPUT DTCS (TECHSTREAM DISPLAY/POWER MANAGEMENT1)

POWER MANAGEMENT CONTROL ECU OUTPUT DTCS (TECHSTREAM DISPLAY/POWER MANAGEMENT2)

MAIN BODY ECU OUTPUT DTCS (TECHSTREAM DISPLAY/MAIN BODY)