CAN Communication System (Diagnostics - Introduction): Other Toyota Corolla XI

ILLUSTRATION

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1. OVERALL CAN BUS DIAGRAM The CAN communication system is composed of 1 bus. 1 ECM 2 Main Body ECU (Multiplex Network Body ECU) 3 Air Conditioning Amplifier Assembly (w/ Air Conditioning System) 4 Power Steering ECU Assembly 5 DLC3 6 Certification ECU (Smart Key ECU Assembly) (w/ Smart Key System) 7 Airbag Sensor Assembly 8 Steering Sensor 9 Skid Control ECU (Brake Actuator Assembly) 10 Navigation Receiver Assembly (for Navigation Receiver Type) 11 Radio and Display Receiver Assembly (for Radio and Display Type) 12 Combination Meter Assembly HINT: Refer to the following bus wiring diagrams for details.
2. V BUS HINT: The CAN communication system connects to other networks via ECUs that function as a gateway. Refer to «SYSTEM DIAGRAM [08/2013 - ]»(ref-635671-S13931875142014070300000)

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1. OVERALL CAN BUS DIAGRAM The CAN communication system is composed of 1 bus. 1 ECM 2 Main Body ECU (Multiplex Network Body ECU) 3 Air Conditioning Amplifier Assembly (w/ Air Conditioning System) 4 Power Steering ECU Assembly 5 DLC3 6 Certification ECU (Smart Key ECU Assembly) (w/ Smart Key System) 7 Airbag Sensor Assembly 8 Steering Sensor (w/ VSC) 9 Skid Control ECU (Brake Actuator Assembly) 10 Navigation Receiver Assembly (for Navigation Receiver Type) 11 Radio and Display Receiver Assembly (for Radio and Display Type) 12 Combination Meter Assembly HINT: Refer to the following bus wiring diagrams for details.
2. V BUS HINT: The CAN communication system connects to other networks via ECUs that function as a gateway. Refer to «SYSTEM DIAGRAM [08/2013 - ]»(ref-635671-S13931875142014070300000)

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1. BRIEF DESCRIPTION The Controller Area Network (CAN) is a serial data communication system for real time application. It is a vehicle multiplex communication system which has a high communication speed and the ability to detect malfunctions. Using the CANH and CANL bus lines as a pair, CAN communication is performed using a voltage differential. (A base voltage is applied to the pair of lines and a voltage differential is created when communicating.) Many ECUs or sensors installed on the vehicle operate by sharing information and communicating with each other. The CAN has two resistors of 120 ohms which are necessary to enable communication.
2. DEFINITION OF TERMS Main bus The main bus is a wire harness between the two terminating resistors on the bus. This is the main bus in the CAN communication system. Branch A branch is a wire harness which diverges from the main bus to an ECU or sensor. Terminating resistors Two resistors of 120 ohms are installed in parallel across the ends of the CAN main bus lines. They are called terminating resistors. These resistors allow the changes of the voltage differential between the CAN bus lines to be accurately judged. To allow proper function of CAN communication, it is necessary to have both terminating resistors installed. Since the two resistors are installed in parallel, this results in a measurement of approximately 60 ohms.
3. ECUS OR SENSORS WHICH COMMUNICATE THROUGH CAN COMMUNICATION SYSTEM V Bus Combination meter assembly Certification ECU (smart key ECU assembly)*1 Steering sensor Navigation receiver assembly*2 Radio and display receiver assembly*3 Airbag sensor assembly Power steering ECU assembly Air conditioning amplifier assembly*4 Skid control ECU (brake actuator assembly) Main body ECU (multiplex network body ECU) ECM HINT: *1: w/ Smart Key System *2: for Navigation Receiver Type *3: for Radio and Display Type *4: w/ Air Conditioning System
4. CIRCUIT DESCRIPTION The V bus has termination circuits with two resistors of 120 ohms.
5. TROUBLESHOOTING REMARKS DTCs for the CAN communication system can be checked using the Techstream. The DLC3 is connected to the CAN communication system, but no DTCs exist regarding problems in the DLC3 or the DLC3 branch lines. If there is a malfunction in the DLC3 or the DLC3 branch lines, ECUs on the CAN cannot output DTCs to the Techstream. Malfunctions in the CAN V bus (communication lines) can be checked by measuring the resistance between terminals of the DLC3. However, an open circuit in a branch line other than the DLC3 branch lines cannot be checked from the DLC3 (except for the DLC3 branch lines). NOTE: Do not insert the tester probes directly into the DLC3. Be sure to use service wires.
6. DIAGNOSTIC TROUBLE CODES FOR CAN COMMUNICATION SYSTEM HINT: See Diagnosis System. Refer to «DIAGNOSIS SYSTEM [08/2013 - 04/2014]»(ref-635647-S40458511452014070300000)
7. HOW TO DISTINGUISH CONNECTOR OF CAN JUNCTION CONNECTOR In the CAN communication system, the shape of connectors connected to the CAN junction connector which has an earth terminal are the same. The connectors connected to the CAN junction connector can be distinguished by the colors of the bus lines and the connecting side of the junction connector. HINT: See Terminals of ECU for bus line color or the shape of connecting surface. Refer to «TERMINALS OF ECU [08/2013 - 04/2014]»(ref-635647-S06587681412014070300000)

CAUTION / NOTICE / HINT

1. PRECAUTIONS WHEN TROUBLESHOOTING NOTE: Because the order of diagnosis is important to allow correct diagnosis, make sure to begin troubleshooting using How to Proceed with Troubleshooting when CAN communication system related DTCs are output. If the CAN communication system is malfunctioning, check the contact pressure of the terminals in connectors, as insufficient terminal contact pressure may be the cause. Refer to «ELECTRONIC CIRCUIT INSPECTION PROCEDURE [08/2013 - ]»(ref-635429-S33489855532014070300000) Refer to Diagnosis System for CAN communication system DTCs. Refer to troubleshooting of each system if DTCs regarding the CAN communication system are not output. Before measuring the resistance of the CAN bus, turn the ignition switch off and leave the vehicle for 1 minute or more without operating the key, switches or opening or closing the doors. After that, disconnect the cable from the negative (-) battery terminal and leave the vehicle for 1 minute or more before measuring the resistance. After turning the ignition switch off, waiting time may be required before disconnecting the cable from the negative (-) battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) battery terminal notices before proceeding with work. Refer to «PRECAUTION [08/2013 - ]»(ref-635429-S26537304232014070300000) CAN communication DTCs are output for CAN main bus and CAN branch malfunctions as well as for internal malfunctions or power source malfunctions of ECUs or sensors for systems using CAN communication. Therefore, when DTCs for internal malfunctions or power source malfunctions of corresponding systems are output at the same time as CAN communication DTCs, troubleshoot according to the internal malfunction and power source malfunction DTCs. The DLC3 branch and V bus main bus circuits can be checked for malfunctions by inspecting at the DLC3 terminals using an electrical tester. NOTE: When inspecting at the DLC3 connector, do not connect the tester directly to the terminals. Instead, connect using service wires. Inspections for an open in an ECU or sensor branch, or inspections for buses other than the V bus cannot be performed from the DLC3. An open in a branch for ECUs or sensors that are connected to the CAN main bus can be checked by performing a CAN bus check using the Techstream. (This inspection is possible when the DLC3 branch and V bus main bus lines are normal.) If the V bus had a communication error, the probable ECU or sensor for which communication stopped can be determined using the combination of communication DTCs (DTCs that start with U) that are output. When an open circuit is detected, before disconnecting related connectors for inspection, push in on the connector body to check that the connector is not loose or disconnected. When a connector is disconnected, check that the terminals and connector body are not cracked, deformed or corroded.

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1. VEHICLE BROUGHT TO WORKSHOP HINT: If the ignition switch can be turned to ON (the power source mode can be changed to on) when the vehicle is brought in for repair, check for DTCs and check the illumination condition of the indicators in the combination meter assembly and the basic operation of the vehicle (such as steering operation) promptly. Do not turn the ignition switch off until the inspection of the vehicle is finished, as some fail-safe functions are canceled when the ignition switch is turned off. If the ignition switch cannot be turned to ON (the power source mode cannot be changed to on) when the vehicle is brought in, measure the voltage of the battery. If the voltage is below 11 V, recharge or replace the battery before performing troubleshooting. If the ignition switch cannot be turned to ON even though the battery voltage is normal, repair this malfunction before performing troubleshooting. Refer to «PROBLEM SYMPTOMS TABLE [08/2013 - ]»(ref-635437-S07871495942014070300000) Result Proceed to NEXT Result: 1 NEXT See step 2
2. CUSTOMER PROBLEM ANALYSIS HINT: When troubleshooting, confirm that the problem symptoms have been accurately identified. Preconceptions should be discarded in order to make an accurate judgment. To clearly understand what the problem symptoms are, it is extremely important to ask the customer about the problem and the conditions at the time the malfunction occurred. Ask the customer if the vehicle is/was equipped with additional devices such as a theft deterrent device or monitor. (If equipped, explain to the customer that the additional devices will be removed before performing troubleshooting as the malfunction cannot be checked properly.) It is useful to confirm the symptoms and the conditions in which the vehicle was operating at the time when a malfunction occurred. This helps to narrow down the malfunctioning part. HINT: What was affected (system, part or meter warning indicators) What happened (details of the malfunction) When (occurrence date and time, frequency and if it recurs or not) Under what kind of situation did the problem occur (driving and operating condition at the occurrence and weather) Road type or condition (city, suburb, paved road, unpaved road, highway, etc.) Return conditions (what made the vehicle return to normal, for example, the ignition switch was turned off) POINTS TO BE CONFIRMED Symptom Electric power steering - Normal - A little heavier than usual - There was no assist Air conditioning - Whether the air conditioning system operated - Whether the blower fan operated Drive monitor display - Whether the update of multi-information display items stopped - Whether the numeric part of drivable distance was not displayed Wireless door lock function and smart entry function - Whether the lock/unlock function operated Operation of other systems of concern Meter warning lights Illumination of warning lights and the order in which they illuminated - Master* - Check engine (MIL) - ABS - Slip - Brake - EPS - SRS - Others Needle movement - Speedometer - Tachometer - Coolant temperature gauge* Content displayed on the cruise information display *: for Dot LCD Type Result Proceed to NEXT Result: 1 NEXT See step 3
3. CHECK TECHSTREAM OPERATION HINT: Read the Techstream operators manual before use. Refer to «GENERAL INFORMATION [08/2013 - ]»(ref-635429-S24386271762014070300000) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Check that the Techstream and ECUs can communicate with the ignition switch ON. HINT: If communication is not possible, the Techstream screen will indicate an error. If communication between the Techstream and ECUs is not possible, either the Techstream or vehicle has a malfunction. When communication between the Techstream and the vehicle is not possible, but communication is possible when the Techstream is connected to another vehicle, the vehicle is malfunctioning. Inspect the CANH and CANL branch lines of the DLC3 and the ECU power source circuits (in this case perform steps 7 to 9 first). In addition, check that the BAT terminal of the DLC3 receives battery voltage (11 V or more). If communication between the Techstream and ECUs is still not possible even when the Techstream is connected to another vehicle, the Techstream has the malfunction. Perform the self tests described in the Techstream operators manual. (The Techstream may be malfunctioning or its battery may be discharged.) Result Result Proceed to OK (Communication between the Techstream and the vehicle is possible.) A OK (Communication between the Techstream and the vehicle is not possible but communication is possible when connected to another vehicle.) B NG (Communication is not possible between the Techstream and the vehicle, nor between the Techstream and another vehicle.) C Result: 2 B See step 7 Result: 3 C REFER TO TECHSTREAM OPERATOR'S MANUAL Result: 1 A See step 4
4. CHECK DTC Using the Techstream, perform Health Check to read current and history DTCs and record them. NOTE: CAN communication DTCs are output when there is an open or short in any of the communication lines. Any problems with the power source of a corresponding ECU or sensor, or problems in the ECU or sensor itself also cause these DTCs to be output. If a CAN communication line connector is disconnected with the ignition switch ON, the ECUs of the corresponding system and related systems store a DTC. HINT: If an open in a CAN main bus line, a short between the CAN bus lines (CANH and CANL) or a +B or ground short in a CAN bus occurs, DTCs of almost all ECUs and sensors on the CAN bus may be output (or a message indicating a communication error may be displayed on the Techstream screen). In this case, check the resistance of the CAN bus (steps 7 to 9) first. If an open occurs in just one of the lines of a CAN branch, DTCs which are not related to malfunctioning parts may be output (DTCs may be displayed randomly), or a message indicating a communication error may be displayed on the Techstream. Read the freeze frame data using the Techstream and record it. Result Proceed to NEXT Result: 1 NEXT See step 5
5. PERFORM COMMUNICATION MALFUNCTION CHECK (CONNECTION STATUS CHECK USING TECHSTREAM) Select "Communication Malfunction Check" from the screen on the Techstream. Record all the DTCs stored for ECUs and sensors. Result Proceed to NEXT Result: 1 NEXT See step 6
6. PERFORM CAN BUS CHECK (CONNECTION STATUS CHECK USING TECHSTREAM) Based on the vehicle equipment and specifications, confirm the systems that use CAN communication. Refer to «DIAGNOSIS SYSTEM [08/2013 - 04/2014]»(ref-635647-S40458511452014070300000) & «DIAGNOSIS SYSTEM [04/2014 - ]»(ref-635652-S02842089492014070300000) Select "CAN Bus Check" from the screen on the Techstream. CAN Bus Check Observe the screen for approximately 2 minutes to check the ECUs and sensors displayed on the screen. Result Proceed to NEXT Result: 1 NEXT See step 7
7. CHECK DLC3 BRANCH LINE AND V BUS MAIN LINE (CANH - CANL) NOTE: Before measuring the resistance of the CAN bus, turn the ignition switch off and leave the vehicle for 1 minute or more without operating the key, switches or opening or closing the doors. After that, disconnect the cable from the negative (-) battery terminal and leave the vehicle for 1 minute or more before measuring the resistance. HINT: Operating the ignition 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. 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 E13-6 (CANH) - E13-14 (CANL) Cable disconnected from negative (-) battery terminal 54 to 69 ohms *1 DLC3 Result Result Proceed to OK A NG (70 ohms or higher) B NG (Below 54 ohms) C Result: 2 B GO TO OPEN IN CAN MAIN BUS LINE. Refer to «Open in CAN Main Bus Line [08/2013 - ]»(ref-635652-S19055914302014070300000) Result: 4 C GO TO SHORT IN CAN BUS LINES. Refer to «Check CAN Bus Lines for Short Circuit [08/2013 - 04/2014]»(ref-635652-S31815599282014070300000) Refer to «Check CAN Bus Lines for Short Circuit [04/2014 - ]»(ref-635652-S42329460222014070300000) Result: 1 A See step 8
8. CHECK FOR SHORT TO GND IN V BUS (CANH, CANL - CG) Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition E13-6 (CANH) - E13-4 (CG) Cable disconnected from negative (-) battery terminal 200 ohms or higher E13-14 (CANL) - E13-4 (CG) *1 DLC3 Result Result OK NG Result: 2 NG GO TO SHORT TO GND IN CAN BUS LINE. Refer to «Check CAN Bus Line for Short to GND [08/2013 - 04/2014]»(ref-635652-S33776109702014070300000) Refer to «Check CAN Bus Line for Short to GND [04/2014 - ]»(ref-635652-S37354378652014070300000) Result: 1 OK See step 9
9. CHECK FOR SHORT TO +B IN V BUS (CANH, CANL - BAT) Measure the resistance according to the value(s) in the table below. *1 DLC3 Standard Resistance Tester Connection Condition Specified Condition E13-6 (CANH) - E13-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kohms or higher E13-14 (CANL) - E13-16 (BAT) Result Result OK NG Result: 2 NG GO TO SHORT TO +B IN CAN BUS LINE. Refer to «Check CAN Bus Line for Short to +B [08/2013 - 04/2014]»(ref-635652-S23314909012014070300000) Refer to «Check CAN Bus Line for Short to +B [04/2014 - ]»(ref-635652-S29904818642014070300000) Result: 1 OK See step 10
10. CHECK RESULT OF CAN BUS CHECK (CONNECTION STATUS CHECK USING TECHSTREAM) Inspect or repair the probable malfunctioning part based on the check result of step 6 (the step in which CAN bus check was performed). CAN Bus Check Result of CAN Bus Check (Connection Status Check Using Techstream) 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 One of the ECUs and sensors connected to the V Bus is not displayed on the screen. (Open in ECU or sensor branch lines, or communication is interrupted.) B In addition to ECUs and sensors which are connected to the CAN communication system but are not displayed on the screen, there are ECUs or sensors for which the detection status changes (changes between detected and not detected) during the inspection. (Open in one side of ECU or sensor branch lines.) C NOTE: Non-installed ECUs or sensors will not be displayed. Do not mistake them for being in communication stop mode. It may be possible to select buses that do not have ECUs or sensors from the bus selection pull-down menu on the Techstream. This is not a malfunction. (This occurs when optional devices are not on a sub bus that is monitored by a gateway function equipped ECU.) HINT: Regarding CAN Bus Check, refer to How to Interpret CAN Bus Check Screen. Refer to «DIAGNOSIS SYSTEM [08/2013 - 04/2014]»(ref-635647-S40458511452014070300000) Refer to «DIAGNOSIS SYSTEM [04/2014 - ]»(ref-635652-S02842089492014070300000) If the detection status of ECUs changes during the inspection, one of the branch lines of a connected ECU or sensor may be open. (Signals from the ECU or sensor that has an open in one of its branch lines create electrical noise, affecting response to the Techstream and whether or not the ECUs and sensors are displayed.) Result: 2 B GO TO COMMUNICATION STOP MODE TABLE. Refer to «PROBLEM SYMPTOMS TABLE [08/2013 - ]»(ref-635647-S21839767952014070300000) Result: 3 C GO TO OPEN IN ONE SIDE OF CAN BRANCH LINE. Refer to «Open in One Side of CAN Branch Line [08/2013 - 04/2014]»(ref-635652-S06625583792014070300000) Refer to «Open in One Side of CAN Branch Line [04/2014 - ]»(ref-635652-S11512848522014070300000) Result: 1 A See step 11
11. CHECK RESULT OF CHECK COMMUNICATION MALFUNCTION CHECK Inspect or repair the probable malfunctioning part based on the check result of step 5 (the step in which checking for communication malfunction DTCs was performed). HINT: When checking for communication DTCs, refer to How to Interpret Communication DTCs (DTCs that start with U). Refer to «DIAGNOSIS SYSTEM [08/2013 - 04/2014]»(ref-635647-S40458511452014070300000) Refer to «DIAGNOSIS SYSTEM [04/2014 - ]»(ref-635652-S02842089492014070300000) If communication DTCs are stored, and all ECUs and sensors connected to the CAN communication system are displayed on the CAN Bus Check screen of the Techstream, a past malfunction that is currently not occurring is suspected. When a CAN branch of the V bus is malfunctioning, because the ECUs and sensors related to it detect the malfunction, the problem area can be determined using the combination of DTCs that are output. Result Proceed to NEXT Result: 1 NEXT See step 12
12. DTC COMBINATION TABLE Confirm the problem according to the combination of output DTCs regarding the CAN communication system. Refer to «DIAGNOSIS SYSTEM [08/2013 - 04/2014]»(ref-635647-S40458511452014070300000) Refer to «DIAGNOSIS SYSTEM [04/2014 - ]»(ref-635652-S02842089492014070300000) Result Result Proceed to Combination of DTCs is not in DTC Combination Table A Combination of DTCs is in DTC Combination Table B HINT: CAN communication system history DTCs may indicate the problem if CAN communication system DTCs are output and all ECUs and sensors connected to the CAN communication system are displayed on the CAN Bus Check screen of the Techstream. Result: 2 B GO TO COMMUNICATION STOP MODE TABLE. Refer to «PROBLEM SYMPTOMS TABLE [08/2013 - ]»(ref-635647-S21839767952014070300000) Result: 1 A See step 13
13. IDENTIFICATION OF PROBLEM (PAST MALFUNCTION IN MAIN BUS OF V BUS) Connect the cable to the negative (-) battery terminal. Clear the DTCs using the Techstream. Perform the tests in Symptom Simulation to check the wire harnesses and connectors including those for V bus main bus lines. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [08/2013 - 04/2014]»(ref-635429-S08037721622014070300000) & «HOW TO PROCEED WITH TROUBLESHOOTING [04/2014 - ]»(ref-635429-S26261876542014070300000) Based on the results of the check, inspect the parts that output DTCs to determine the malfunctioning part. HINT: If DTCs are output, do not turn the ignition switch off. Result Proceed to NEXT Result: 1 NEXT See step 14
14. REPAIR OR REPLACEMENT Result Proceed to NEXT Result: 1 NEXT See step 15
15. CONFIRMATION TEST Result Proceed to NEXT Result: 1 NEXT END

TERMINALS OF ECU [08/2013 - 04/2014]

Note. After turning the ignition switch off, waiting time may be required before disconnecting the cable from the negative (-) battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) battery terminal notices before proceeding with work. Refer to PRECAUTION [08/2013 - ] Turn the ignition switch off before measuring the resistances between CAN main bus lines and between CAN branch lines. Turn the ignition switch off before inspecting CAN bus lines for a ground short. Before measuring the resistance of the CAN bus, turn the ignition switch off and leave the vehicle for 1 minute or more without operating the key, switches or opening or closing the doors. After that, disconnect the cable from the negative (-) battery terminal and leave the vehicle for 1 minute or more before measuring the resistance. This article describes the standard values for all CAN related components.

HINT

1. Operating the ignition 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.
2. 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.

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1. NO. 2 CAN JUNCTION CONNECTOR Check the No. 2 CAN junction connector. Connection diagram *a Front view of wire harness connector (No. 2 CAN Junction Connector) *b to No. 3 CAN Junction Connector *c to Skid Control ECU (Brake Actuator Assembly) *d to ECM Check the connection diagram of the components which are connected to the No. 2 CAN junction connector. Terminal No. (Symbol) Wiring Color Connected to A39-4 (CANH) L No. 3 CAN junction connector A39-15 (CANL) W A39-5 (CANH) V Skid control ECU (brake actuator assembly) A39-16 (CANL) W A39-6 (CANH) B ECM A39-17 (CANL) W
2. NO. 3 CAN JUNCTION CONNECTOR Check the No. 3 CAN junction connector. Connection diagram *a Front view of wire harness connector (No. 3 CAN Junction Connector) *b to No. 2 CAN Junction Connector *c to Air Conditioning Amplifier Assembly (w/ Air Conditioning System) *d to Navigation Receiver Assembly (for Navigation Receiver Type) *e to Radio and Display Receiver Assembly (for Radio and Display Type) *f to Combination Meter Assembly *g to Airbag Sensor Assembly *h to Certification ECU (Smart Key ECU Assembly) (w/ Smart Key System) *i to Main Body ECU (Multiplex Network Body ECU) *j to Power Steering ECU Assembly *k to Steering Sensor *l to DLC3 Check the connection diagram of the components which are connected to the No. 3 CAN junction connector. Terminal No. (Symbol) Wiring Color Connected to E55-1 (CANH) L No. 2 CAN junction connector E55-12 (CANL) W E55-2 (CANH) Y Air conditioning amplifier assembly*1 E55-13 (CANL) W E55-3 (CANH) G Navigation receiver assembly*2 E55-14 (CANL) W E55-3 (CANH) G Radio and display receiver assembly*3 E55-14 (CANL) W E55-4 (CANH) LG Combination meter assembly E55-15 (CANL) W E55-5 (CANH) V Airbag sensor assembly E55-16 (CANL) W E55-6 (CANH) P Certification ECU (smart key ECU assembly)*4 E55-17 (CANL) W E55-8 (CANH) B Main body ECU (multiplex network body ECU) E55-19 (CANL) W E55-9 (CANH) GR Power steering ECU assembly E55-20 (CANL) W E55-10 (CANH) SB Steering sensor E55-21 (CANL) W E55-11 (CANH) R DLC3 E55-22 (CANL) W *1: w/ Air Conditioning System *2: for Navigation Receiver Type *3: for Radio and Display Type *4: w/ Smart Key System
3. DLC3 Disconnect the cable from the negative (-) battery terminal. Measure the resistance according to the value(s) in the table below. *1 DLC3 - - Standard Resistance Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition E13-6 (CANH) - E13-14 (CANL) R - W HIGH-level CAN bus line - LOW-level CAN bus line Cable disconnected from negative (-) battery terminal 54 to 69 ohms E13-6 (CANH) - E13-4 (CG) R - W-B HIGH-level CAN bus line - Ground Cable disconnected from negative (-) battery terminal 200 ohms or higher E13-14 (CANL) - E13-4 (CG) W - W-B LOW-level CAN bus line - Ground Cable disconnected from negative (-) battery terminal 200 ohms or higher E13-6 (CANH) - E13-16 (BAT) R - G HIGH-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher E13-14 (CANL) - E13-16 (BAT) W - G LOW-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher
4. ECM *a Component without harness connected (ECM) - - Disconnect the cable from the negative (-) battery terminal. Disconnect the A40 and B33 ECM connectors. *a Front view of wire harness connector (to ECM) - - Measure the resistance according to the value(s) in the table below. Standard Resistance Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition A40-13 (CANH) - A40-26 (CANL) B - W HIGH-level CAN bus line - LOW-level CAN bus line Cable disconnected from negative (-) battery terminal 108 to 132 ohms A40-13 (CANH) - B33-16 (E1) B - BR HIGH-level CAN bus line - Ground Cable disconnected from negative (-) battery terminal 200 ohms or higher A40-26 (CANL) - B33-16 (E1) W - BR LOW-level CAN bus line - Ground Cable disconnected from negative (-) battery terminal 200 ohms or higher A40-13 (CANH) - A40-1 (BATT) B - B HIGH-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher A40-26 (CANL) - A40-1 (BATT) W - B LOW-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher
5. COMBINATION METER ASSEMBLY *a Component without harness connected (Combination Meter Assembly) - - Disconnect the cable from the negative (-) battery terminal. Disconnect the E43 combination meter assembly connector. *a Front view of wire harness connector (to Combination Meter Assembly) - - Measure the resistance according to the value(s) in the table below. Standard Resistance Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition E43-32 (CANH) - E43-31 (CANL) LG - W HIGH-level CAN bus line - LOW-level CAN bus line Cable disconnected from negative (-) battery terminal 108 to 132 ohms E43-32 (CANH) - E43-21 (ET) LG - BR HIGH-level CAN bus line - Ground Cable disconnected from negative (-) battery terminal 200 ohms or higher E43-31 (CANL) - E43-21 (ET) W - BR LOW-level CAN bus line - Ground Cable disconnected from negative (-) battery terminal 200 ohms or higher E43-32 (CANH) - E43-40 (B) LG - W HIGH-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher E43-31 (CANL) - E43-40 (B) W - W LOW-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher
6. DRIVER SIDE JUNCTION BLOCK ASSEMBLY AND MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) *1 Main Body ECU (Multiplex Network Body ECU) *2 1 connector *a Component without harness connected (Driver Side Junction Block Assembly and Main Body ECU (Multiplex Network Body ECU)) - - *1 Main Body ECU (Multiplex Network Body ECU) *2 2 Connectors *a Component without harness connected (Driver Side Junction Block Assembly and Main Body ECU (Multiplex Network Body ECU)) - - Disconnect the cable from the negative (-) battery terminal. Disconnect the E31 main body ECU (multiplex network body ECU) connector. *1 DLC3 - - *a Front view of wire harness connector (to Main Body ECU (Multiplex Network Body ECU)) - - Measure the resistance according to the value(s) in the table below. Standard Resistance Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition E31-14 (CANH) - E31-13 (CANL) B - W HIGH-level CAN bus line - LOW-level CAN bus line Cable disconnected from negative (-) battery terminal 54 to 69 ohms E31-14 (CANH) - E13-4 (CG) B - W-B HIGH-level CAN bus line - Ground Cable disconnected from negative (-) battery terminal 200 ohms or higher E31-13 (CANL) - E13-4 (CG) W - W-B LOW-level CAN bus line - Ground Cable disconnected from negative (-) battery terminal 200 ohms or higher E31-14 (CANH) - E13-16 (BAT) B - G HIGH-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher E31-13 (CANL) - E13-16 (BAT) W - G LOW-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher
7. SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY) *a Component without harness connected (Skid Control ECU (Brake Actuator Assembly)) - - Disconnect the cable from the negative (-) battery terminal. Disconnect the A41 skid control ECU (brake actuator assembly) connector. *a Front view of wire harness connector (to Skid Control ECU (Brake Actuator Assembly)) - - Measure the resistance according to the value(s) in the table below. Standard Resistance Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition A41-25 (CANH) - A41-14 (CANL) V - W HIGH-level CAN bus line - LOW-level CAN bus line Cable disconnected from negative (-) battery terminal 54 to 69 ohms A41-25 (CANH) - A41-1 (GND1) V - W-B HIGH-level CAN bus line - Ground Cable disconnected from negative (-) battery terminal 200 ohms or higher A41-14 (CANL) - A41-1 (GND1) W - W-B LOW-level CAN bus line - Ground Cable disconnected from negative (-) battery terminal 200 ohms or higher A41-25 (CANH) - A41-12 (+BS) V - W HIGH-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher A41-14 (CANL) - A41-12 (+BS) W - W LOW-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher
8. STEERING SENSOR *a Component without harness connected (Steering Sensor) - - Disconnect the cable from the negative (-) battery terminal. Disconnect the E50 steering sensor connector. *a Front view of wire harness connector (to Steering Sensor) - - Measure the resistance according to the value(s) in the table below. Standard Resistance Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition E50-3 (CANH) - E50-2 (CANL) SB - W HIGH-level CAN bus line - LOW-level CAN bus line Cable disconnected from negative (-) battery terminal 54 to 69 ohms E50-3 (CANH) - E50-1 (ESS) SB - BR HIGH-level CAN bus line - Ground Cable disconnected from negative (-) battery terminal 200 ohms or higher E50-2 (CANL) - E50-1 (ESS) W - BR LOW-level CAN bus line - Ground Cable disconnected from negative (-) battery terminal 200 ohms or higher E50-3 (CANH) - E50-5 (BAT) SB - W HIGH-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher E50-2 (CANL) - E50-5 (BAT) W - W LOW-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher
9. POWER STEERING ECU ASSEMBLY *a Component without harness connected (Power Steering ECU Assembly) - - Disconnect the cable from the negative (-) battery terminal. Disconnect the A25 and E40 power steering ECU assembly connectors. *a Front view of wire harness connector (to Power Steering ECU Assembly) - - Measure the resistance according to the value(s) in the table below. Standard Resistance Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition E40-7 (CANH) - E40-8 (CANL) GR - W HIGH-level CAN bus line - LOW-level CAN bus line Cable disconnected from negative (-) battery terminal 54 to 69 ohms E40-7 (CANH) - A25-2 (PGND) GR - W-B HIGH-level CAN bus line - Ground Cable disconnected from negative (-) battery terminal 200 ohms or higher E40-8 (CANL) - A25-2 (PGND) W - W-B LOW-level CAN bus line - Ground Cable disconnected from negative (-) battery terminal 200 ohms or higher E40-7 (CANH) - A25-1 (PIG) GR - L HIGH-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher E40-8 (CANL) - A25-1 (PIG) W - L LOW-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher
10. AIRBAG SENSOR ASSEMBLY *a Component without harness connected (Airbag Sensor Assembly) - - Disconnect the cable from the negative (-) battery terminal. Disconnect the E14 airbag sensor assembly connector. *1 DLC3 - - *a Front view of wire harness connector (to Airbag Sensor Assembly) - - Measure the resistance according to the value(s) in the table below. Standard Resistance Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition E14-13 (CANH) - E14-22 (CANL) V - W HIGH-level CAN bus line - LOW-level CAN bus line Cable disconnected from negative (-) battery terminal 54 to 69 ohms E14-13 (CANH) - E14-25 (E1) V - W-B HIGH-level CAN bus line - Ground Cable disconnected from negative (-) battery terminal 200 ohms or higher E14-22 (CANL) - E14-25 (E1) W - W-B LOW-level CAN bus line - Ground Cable disconnected from negative (-) battery terminal 200 ohms or higher E14-13 (CANH) - E13-16 (BAT) V - G HIGH-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher E14-22 (CANL) - E13-16 (BAT) W - G LOW-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher
11. CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) (w/ Smart Key System) *a Component without harness connected (Certification ECU (Smart Key ECU Assembly)) - - Disconnect the cable from the negative (-) battery terminal. Disconnect the E57 and E59 certification ECU (smart key ECU assembly) connectors. *a Front view of wire harness connector (to Certification ECU (Smart Key ECU Assembly)) - - Measure the resistance according to the value(s) in the table below. Standard Resistance Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition E59-14 (CANH) - E59-15 (CANL) P - W HIGH-level CAN bus line - LOW-level CAN bus line Cable disconnected from negative (-) battery terminal 54 to 69 ohms E59-14 (CANH) - E57-11 (E) P- W-B HIGH-level CAN bus line - Ground Cable disconnected from negative (-) battery terminal 200 ohms or higher E59-15 (CANL) - E57-11 (E) W - W-B LOW-level CAN bus line - Ground Cable disconnected from negative (-) battery terminal 200 ohms or higher E59-14 (CANH) - E57-2 (+B) P - L HIGH-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher E59-15 (CANL) - E57-2 (+B) W - L LOW-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher
12. NAVIGATION RECEIVER ASSEMBLY (for Navigation Receiver Type) *a Component without harness connected (Navigation Receiver Assembly) - - Disconnect the cable from the negative (-) battery terminal. Disconnect the E65 and E67 navigation receiver assembly connectors. *a Front view of wire harness connector (to Navigation Receiver Assembly) - - Measure the resistance according to the value(s) in the table below. Standard Resistance Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition E67-9 (CANH) - E67-10 (CANL) G - W HIGH-level CAN bus line - LOW-level CAN bus line Cable disconnected from negative (-) battery terminal 54 to 69 ohms E67-9 (CANH) - E65-7 (GND1) G - BR HIGH-level CAN bus line - Ground Cable disconnected from negative (-) battery terminal 200 ohms or higher E67-10 (CANL) - E65-7 (GND1) W - BR LOW-level CAN bus line - Ground Cable disconnected from negative (-) battery terminal 200 ohms or higher E67-9 (CANH) - E65-4 (+B1) G - SB HIGH-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher E67-10 (CANL) - E65-4 (+B1) W - SB LOW-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher
13. RADIO AND DISPLAY RECEIVER ASSEMBLY (for Radio and Display Type) *a Component without harness connected (Radio and Display Receiver Assembly) - - Disconnect the cable from the negative (-) battery terminal. Disconnect the E1 and E29 radio and display receiver assembly connectors. *a Front view of wire harness connector (to Radio and Display Receiver Assembly) - - Measure the resistance according to the value(s) in the table below. Standard Resistance Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition E29-9 (CANH) - E29-10 (CANL) G - W HIGH-level CAN bus line - LOW-level CAN bus line Cable disconnected from negative (-) battery terminal 54 to 69 ohms E29-9 (CANH) - E1-7 (GND1) G - BR HIGH-level CAN bus line - Ground Cable disconnected from negative (-) battery terminal 200 ohms or higher E29-10 (CANL) - E1-7 (GND1) W - BR LOW-level CAN bus line - Ground Cable disconnected from negative (-) battery terminal 200 ohms or higher E29-9 (CANH) - E1-4 (+B1) G - SB HIGH-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher E29-10 (CANL) - E1-4 (+B1) W - SB LOW-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher
14. AIR CONDITIONING AMPLIFIER ASSEMBLY (w/ Automatic Air Conditioning System) *a Component without harness connected (Air Conditioning Amplifier Assembly) - - Disconnect the cable from the negative (-) battery terminal. Disconnect the E37 air conditioning amplifier assembly connector. *a Front view of wire harness connector (to Air Conditioning Amplifier Assembly) - - Measure the resistance according to the value(s) in the table below. Standard Resistance Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition E37-11 (CANH) - E37-12 (CANL) Y - W HIGH-level CAN bus line - LOW-level CAN bus line Cable disconnected from negative (-) battery terminal 54 to 69 ohms E37-11 (CANH) - E37-14 (GND) Y - BR HIGH-level CAN bus line - Ground Cable disconnected from negative (-) battery terminal 200 ohms or higher E37-12 (CANL) - E37-14 (GND) W - BR LOW-level CAN bus line - Ground Cable disconnected from negative (-) battery terminal 200 ohms or higher E37-11 (CANH) - E37-21 (B) Y - W HIGH-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher E37-12 (CANL) - E37-21 (B) W - W LOW-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher
15. AIR CONDITIONING AMPLIFIER ASSEMBLY (w/ Manual Air Conditioning System) *a Component without harness connected (Air Conditioning Amplifier Assembly) - - Disconnect the cable from the negative (-) battery terminal. *1 DLC3 - - *a Front view of wire harness connector (to Air Conditioning Amplifier Assembly) - - Disconnect the E7 air conditioning amplifier assembly connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition E7-8 (CANH) - E7-9 (CANL) Y - W HIGH-level CAN bus line - LOW-level CAN bus line Cable disconnected from negative (-) battery terminal 54 to 69 ohms E7-8 (CANH) - E7-23 (GND) Y - BR HIGH-level CAN bus line - Ground Cable disconnected from negative (-) battery terminal 200 ohms or higher E7-9 (CANL) - E7-23 (GND) W - BR LOW-level CAN bus line - Ground Cable disconnected from negative (-) battery terminal 200 ohms or higher E7-8 (CANH) - E13-16 (BAT) Y - G HIGH-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher E7-9 (CANL) - E13-16 (BAT) W - G LOW-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher

TERMINALS OF ECU [04/2014 - ]

Note. After turning the ignition switch off, waiting time may be required before disconnecting the cable from the negative (-) battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) battery terminal notices before proceeding with work. Refer to PRECAUTION [08/2013 - ] Turn the ignition switch off before measuring the resistances between CAN main bus lines and between CAN branch lines. Turn the ignition switch off before inspecting CAN bus lines for a ground short. Before measuring the resistance of the CAN bus, turn the ignition switch off and leave the vehicle for 1 minute or more without operating the key or switches, or opening or closing the doors. After that, disconnect the cable from the negative (-) battery terminal and leave the vehicle for 1 minute or more before measuring the resistance. This article describes the standard values for all CAN related components.

HINT

1. Operating the ignition 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.
2. 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.

Scheme 42

Scheme 43

Scheme 44

Scheme 45

1. NO. 2 CAN JUNCTION CONNECTOR Check the No. 2 CAN junction connector. Connection diagram *a Front view of wire harness connector (to No. 2 CAN Junction Connector) *b to No. 3 CAN Junction Connector *c to Skid Control ECU (Brake Actuator Assembly) *d to ECM Check the connection diagram of the components which are connected to the No. 2 CAN junction connector. Terminal No. (Symbol) Wiring Color Connected to A39-4 (CANH) L No. 3 CAN junction connector A39-15 (CANL) W A39-5 (CANH) V Skid control ECU (brake actuator assembly) A39-16 (CANL) W A39-6 (CANH) B ECM A39-17 (CANL) W
2. NO. 3 CAN JUNCTION CONNECTOR Check the No. 3 CAN junction connector. Connection diagram *a Front view of wire harness connector (to No. 3 CAN Junction Connector) *b to No. 2 CAN Junction Connector *c to Air Conditioning Amplifier Assembly (w/ Air Conditioning System) *d to Navigation Receiver Assembly (for Navigation Receiver Type) *e to Radio and Display Receiver Assembly (for Radio and Display Type) *f to Combination Meter Assembly *g to Airbag Sensor Assembly *h to Certification ECU (Smart Key ECU Assembly) (w/ Smart Key System) *i to Main Body ECU (Multiplex Network Body ECU) *j to Power Steering ECU Assembly *k to Steering Sensor (w/ VSC) *l to DLC3 Check the connection diagram of the components which are connected to the No. 3 CAN junction connector. Terminal No. (Symbol) Wiring Color Connected to E55-1 (CANH) L No. 2 CAN junction connector E55-12 (CANL) W E55-2 (CANH) Y Air conditioning amplifier assembly*1 E55-13 (CANL) W E55-3 (CANH) G Navigation receiver assembly*2 E55-14 (CANL) W E55-3 (CANH) G Radio and display receiver assembly*3 E55-14 (CANL) W E55-4 (CANH) LG Combination meter assembly E55-15 (CANL) W E55-5 (CANH) V Airbag sensor assembly E55-16 (CANL) W E55-6 (CANH) P Certification ECU (smart key ECU assembly)*4 E55-17 (CANL) W E55-8 (CANH) B Main body ECU (multiplex network body ECU) E55-19 (CANL) W E55-9 (CANH) GR Power steering ECU assembly E55-20 (CANL) W E55-10 (CANH) SB Steering sensor*5 E55-21 (CANL) W E55-11 (CANH) R DLC3 E55-22 (CANL) W *1: w/ Air Conditioning System *2: for Navigation Receiver Type *3: for Radio and Display Type *4: w/ Smart Key System *5: w/ VSC
3. DLC3 Disconnect the cable from the negative (-) battery terminal. Measure the resistance according to the value(s) in the table below. *1 DLC3 - - Standard Resistance Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition E13-6 (CANH) - E13-14 (CANL) R - W HIGH-level CAN bus line - LOW-level CAN bus line Cable disconnected from negative (-) battery terminal 54 to 69 ohms E13-6 (CANH) - E13-4 (CG) R - W-B HIGH-level CAN bus line - Ground Cable disconnected from negative (-) battery terminal 200 ohms or higher E13-14 (CANL) - E13-4 (CG) W - W-B LOW-level CAN bus line - Ground Cable disconnected from negative (-) battery terminal 200 ohms or higher E13-6 (CANH) - E13-16 (BAT) R - G HIGH-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher E13-14 (CANL) - E13-16 (BAT) W - G LOW-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher
4. ECM *a Component without harness connected (ECM) - - Disconnect the cable from the negative (-) battery terminal. Disconnect the A40 and B33 ECM connectors. *a Front view of wire harness connector (to ECM) - - Measure the resistance according to the value(s) in the table below. Standard Resistance Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition A40-13 (CANH) - A40-26 (CANL) B - W HIGH-level CAN bus line - LOW-level CAN bus line Cable disconnected from negative (-) battery terminal 108 to 132 ohms A40-13 (CANH) - B33-16 (E1) B - BR HIGH-level CAN bus line - Ground Cable disconnected from negative (-) battery terminal 200 ohms or higher A40-26 (CANL) - B33-16 (E1) W - BR LOW-level CAN bus line - Ground Cable disconnected from negative (-) battery terminal 200 ohms or higher A40-13 (CANH) - A40-1 (BATT) B - B HIGH-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher A40-26 (CANL) - A40-1 (BATT) W - B LOW-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher
5. COMBINATION METER ASSEMBLY *a Component without harness connected (Combination Meter Assembly) - - Disconnect the cable from the negative (-) battery terminal. Disconnect the E43 combination meter assembly connector. *a Front view of wire harness connector (to Combination Meter Assembly) - - Measure the resistance according to the value(s) in the table below. Standard Resistance Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition E43-32 (CANH) - E43-31 (CANL) LG - W HIGH-level CAN bus line - LOW-level CAN bus line Cable disconnected from negative (-) battery terminal 108 to 132 ohms E43-32 (CANH) - E43-21 (ET) LG - BR HIGH-level CAN bus line - Ground Cable disconnected from negative (-) battery terminal 200 ohms or higher E43-31 (CANL) - E43-21 (ET) W - BR LOW-level CAN bus line - Ground Cable disconnected from negative (-) battery terminal 200 ohms or higher E43-32 (CANH) - E43-40 (B) LG - W HIGH-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher E43-31 (CANL) - E43-40 (B) W - W LOW-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher
6. DRIVER SIDE JUNCTION BLOCK ASSEMBLY AND MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) *1 Main Body ECU (Multiplex Network Body ECU) with 1 Connector - - *a Component without harness connected (Driver Side Junction Block Assembly and Main Body ECU (Multiplex Network Body ECU)) *b 1 connector *1 Main Body ECU (Multiplex Network Body ECU) with 2 Connectors - - *a Component without harness connected (Driver Side Junction Block Assembly and Main Body ECU (Multiplex Network Body ECU)) *b 2 Connectors Disconnect the cable from the negative (-) battery terminal. Disconnect the E31 main body ECU (multiplex network body ECU) connector. *1 DLC3 - - *a Front view of wire harness connector (to Main Body ECU (Multiplex Network Body ECU)) - - Measure the resistance according to the value(s) in the table below. Standard Resistance Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition E31-14 (CANH) - E31-13 (CANL) B - W HIGH-level CAN bus line - LOW-level CAN bus line Cable disconnected from negative (-) battery terminal 54 to 69 ohms E31-14 (CANH) - E13-4 (CG) B - W-B HIGH-level CAN bus line - Ground Cable disconnected from negative (-) battery terminal 200 ohms or higher E31-13 (CANL) - E13-4 (CG) W - W-B LOW-level CAN bus line - Ground Cable disconnected from negative (-) battery terminal 200 ohms or higher E31-14 (CANH) - E13-16 (BAT) B - G HIGH-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher E31-13 (CANL) - E13-16 (BAT) W - G LOW-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher
7. SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY) (w/o VSC) *a Component without harness connected (Skid Control ECU (Brake Actuator Assembly)) - - Disconnect the cable from the negative (-) battery terminal. Disconnect the A42 skid control ECU (brake actuator assembly) connector. *a Front view of wire harness connector (to Skid Control ECU (Brake Actuator Assembly)) - - Measure the resistance according to the value(s) in the table below. Standard Resistance Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition A42-25 (CANH) - A42-14 (CANL) V - W HIGH-level CAN bus line - LOW-level CAN bus line Cable disconnected from negative (-) battery terminal 54 to 69 ohms A42-25 (CANH) - A42-1 (GND1) V - W-B HIGH-level CAN bus line - Ground Cable disconnected from negative (-) battery terminal 200 ohms or higher A42-14 (CANL) - A42-1 (GND1) W - W-B LOW-level CAN bus line - Ground Cable disconnected from negative (-) battery terminal 200 ohms or higher A42-25 (CANH) - A42-12 (+BS) V - W HIGH-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher A42-14 (CANL) - A42-12 (+BS) W - W LOW-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher
8. SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY) (w/ VSC) *a Component without harness connected (Skid Control ECU (Brake Actuator Assembly)) - - Disconnect the cable from the negative (-) battery terminal. Disconnect the A41 skid control ECU (brake actuator assembly) connector. *a Front view of wire harness connector (to Skid Control ECU (Brake Actuator Assembly)) - - Measure the resistance according to the value(s) in the table below. Standard Resistance Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition A41-25 (CANH) - A41-14 (CANL) V - W HIGH-level CAN bus line - LOW-level CAN bus line Cable disconnected from negative (-) battery terminal 54 to 69 ohms A41-25 (CANH) - A41-1 (GND1) V - W-B HIGH-level CAN bus line - Ground Cable disconnected from negative (-) battery terminal 200 ohms or higher A41-14 (CANL) - A41-1 (GND1) W - W-B LOW-level CAN bus line - Ground Cable disconnected from negative (-) battery terminal 200 ohms or higher A41-25 (CANH) - A41-12 (+BS) V - W HIGH-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher A41-14 (CANL) - A41-12 (+BS) W - W LOW-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher
9. STEERING SENSOR (w/ VSC) *a Component without harness connected (Steering Sensor) - - Disconnect the cable from the negative (-) battery terminal. Disconnect the E50 steering sensor connector. *a Front view of wire harness connector (to Steering Sensor) - - Measure the resistance according to the value(s) in the table below. Standard Resistance Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition E50-3 (CANH) - E50-2 (CANL) SB - W HIGH-level CAN bus line - LOW-level CAN bus line Cable disconnected from negative (-) battery terminal 54 to 69 ohms E50-3 (CANH) - E50-1 (ESS) SB - BR HIGH-level CAN bus line - Ground Cable disconnected from negative (-) battery terminal 200 ohms or higher E50-2 (CANL) - E50-1 (ESS) W - BR LOW-level CAN bus line - Ground Cable disconnected from negative (-) battery terminal 200 ohms or higher E50-3 (CANH) - E50-5 (BAT) SB - W HIGH-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher E50-2 (CANL) - E50-5 (BAT) W - W LOW-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher
10. POWER STEERING ECU ASSEMBLY *a Component without harness connected (Power Steering ECU Assembly) - - Disconnect the cable from the negative (-) battery terminal. Disconnect the A25 and E40 power steering ECU assembly connectors. *a Front view of wire harness connector (to Power Steering ECU Assembly) - - Measure the resistance according to the value(s) in the table below. Standard Resistance Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition E40-7 (CANH) - E40-8 (CANL) GR - W HIGH-level CAN bus line - LOW-level CAN bus line Cable disconnected from negative (-) battery terminal 54 to 69 ohms E40-7 (CANH) - A25-2 (PGND) GR - W-B HIGH-level CAN bus line - Ground Cable disconnected from negative (-) battery terminal 200 ohms or higher E40-8 (CANL) - A25-2 (PGND) W - W-B LOW-level CAN bus line - Ground Cable disconnected from negative (-) battery terminal 200 ohms or higher E40-7 (CANH) - A25-1 (PIG) GR - L HIGH-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher E40-8 (CANL) - A25-1 (PIG) W - L LOW-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher
11. AIRBAG SENSOR ASSEMBLY *a Component without harness connected (Airbag Sensor Assembly) - - Disconnect the cable from the negative (-) battery terminal. Disconnect the E14 airbag sensor assembly connector. *1 DLC3 - - *a Front view of wire harness connector (to Airbag Sensor Assembly) - - Measure the resistance according to the value(s) in the table below. Standard Resistance Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition E14-13 (CANH) - E14-22 (CANL) V - W HIGH-level CAN bus line - LOW-level CAN bus line Cable disconnected from negative (-) battery terminal 54 to 69 ohms E14-13 (CANH) - E14-25 (E1) V - W-B HIGH-level CAN bus line - Ground Cable disconnected from negative (-) battery terminal 200 ohms or higher E14-22 (CANL) - E14-25 (E1) W - W-B LOW-level CAN bus line - Ground Cable disconnected from negative (-) battery terminal 200 ohms or higher E14-13 (CANH) - E13-16 (BAT) V - G HIGH-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher E14-22 (CANL) - E13-16 (BAT) W - G LOW-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher
12. CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) (w/ Smart Key System) *a Component without harness connected (Certification ECU (Smart Key ECU Assembly)) - - Disconnect the cable from the negative (-) battery terminal. Disconnect the E57 and E59 certification ECU (smart key ECU assembly) connectors. *a Front view of wire harness connector (to Certification ECU (Smart Key ECU Assembly)) - - Measure the resistance according to the value(s) in the table below. Standard Resistance Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition E59-14 (CANH) - E59-15 (CANL) P - W HIGH-level CAN bus line - LOW-level CAN bus line Cable disconnected from negative (-) battery terminal 54 to 69 ohms E59-14 (CANH) - E57-11 (E) P- W-B HIGH-level CAN bus line - Ground Cable disconnected from negative (-) battery terminal 200 ohms or higher E59-15 (CANL) - E57-11 (E) W - W-B LOW-level CAN bus line - Ground Cable disconnected from negative (-) battery terminal 200 ohms or higher E59-14 (CANH) - E57-2 (+B) P - L HIGH-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher E59-15 (CANL) - E57-2 (+B) W - L LOW-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher
13. NAVIGATION RECEIVER ASSEMBLY (for Navigation Receiver Type) *a Component without harness connected (Navigation Receiver Assembly) - - Disconnect the cable from the negative (-) battery terminal. Disconnect the E65 and E67 navigation receiver assembly connectors. *a Front view of wire harness connector (to Navigation Receiver Assembly) - - Measure the resistance according to the value(s) in the table below. Standard Resistance Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition E67-9 (CANH) - E67-10 (CANL) G - W HIGH-level CAN bus line - LOW-level CAN bus line Cable disconnected from negative (-) battery terminal 54 to 69 ohms E67-9 (CANH) - E65-7 (GND1) G - BR HIGH-level CAN bus line - Ground Cable disconnected from negative (-) battery terminal 200 ohms or higher E67-10 (CANL) - E65-7 (GND1) W - BR LOW-level CAN bus line - Ground Cable disconnected from negative (-) battery terminal 200 ohms or higher E67-9 (CANH) - E65-4 (+B1) G - SB HIGH-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher E67-10 (CANL) - E65-4 (+B1) W - SB LOW-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher
14. RADIO AND DISPLAY RECEIVER ASSEMBLY (for Radio and Display Type) *a Component without harness connected (Radio and Display Receiver Assembly) - - Disconnect the cable from the negative (-) battery terminal. Disconnect the E1 and E29 radio and display receiver assembly connectors. *a Front view of wire harness connector (to Radio and Display Receiver Assembly) - - Measure the resistance according to the value(s) in the table below. Standard Resistance Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition E29-9 (CANH) - E29-10 (CANL) G - W HIGH-level CAN bus line - LOW-level CAN bus line Cable disconnected from negative (-) battery terminal 54 to 69 ohms E29-9 (CANH) - E1-7 (GND1) G - BR HIGH-level CAN bus line - Ground Cable disconnected from negative (-) battery terminal 200 ohms or higher E29-10 (CANL) - E1-7 (GND1) W - BR LOW-level CAN bus line - Ground Cable disconnected from negative (-) battery terminal 200 ohms or higher E29-9 (CANH) - E1-4 (+B1) G - SB HIGH-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher E29-10 (CANL) - E1-4 (+B1) W - SB LOW-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher
15. AIR CONDITIONING AMPLIFIER ASSEMBLY (w/ Automatic Air Conditioning System) *a Component without harness connected (Air Conditioning Amplifier Assembly) - - Disconnect the cable from the negative (-) battery terminal. Disconnect the E37 air conditioning amplifier assembly connector. *a Front view of wire harness connector (to Air Conditioning Amplifier Assembly) - - Measure the resistance according to the value(s) in the table below. Standard Resistance Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition E37-11 (CANH) - E37-12 (CANL) Y - W HIGH-level CAN bus line - LOW-level CAN bus line Cable disconnected from negative (-) battery terminal 54 to 69 ohms E37-11 (CANH) - E37-14 (GND) Y - BR HIGH-level CAN bus line - Ground Cable disconnected from negative (-) battery terminal 200 ohms or higher E37-12 (CANL) - E37-14 (GND) W - BR LOW-level CAN bus line - Ground Cable disconnected from negative (-) battery terminal 200 ohms or higher E37-11 (CANH) - E37-21 (B) Y - W HIGH-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher E37-12 (CANL) - E37-21 (B) W - W LOW-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher
16. AIR CONDITIONING AMPLIFIER ASSEMBLY (w/ Manual Air Conditioning System) *a Component without harness connected (Air Conditioning Amplifier Assembly) - - Disconnect the cable from the negative (-) battery terminal. *1 DLC3 - - *a Front view of wire harness connector (to Air Conditioning Amplifier Assembly) - - Disconnect the E7 air conditioning amplifier assembly connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition E7-8 (CANH) - E7-9 (CANL) Y - W HIGH-level CAN bus line - LOW-level CAN bus line Cable disconnected from negative (-) battery terminal 54 to 69 ohms E7-8 (CANH) - E7-23 (GND) Y - BR HIGH-level CAN bus line - Ground Cable disconnected from negative (-) battery terminal 200 ohms or higher E7-9 (CANL) - E7-23 (GND) W - BR LOW-level CAN bus line - Ground Cable disconnected from negative (-) battery terminal 200 ohms or higher E7-8 (CANH) - E13-16 (BAT) Y - G HIGH-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher E7-9 (CANL) - E13-16 (BAT) W - G LOW-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher

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1. ECUS OR SENSORS WHICH COMMUNICATE THROUGH CAN COMMUNICATION SYSTEM V Bus Combination meter assembly Power steering ECU assembly Main body ECU (multiplex network body ECU) Steering sensor Airbag sensor assembly ECM Skid control ECU (brake actuator assembly) Air conditioning amplifier assembly*1 Certification ECU (smart key ECU assembly)*2 Navigation receiver assembly*3 Radio and display receiver assembly*4 HINT: *1: w/ Air Conditioning System *2: w/ Smart Key System *3: for Navigation Receiver Type *4: for Radio and Display Type
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. HINT: The names of ECUs and sensors shown on the Techstream display may differ from those shown in the DTC Table by ECU article that follows. ECU/Sensor Name Techstream Display Applicability ECM ECM (Engine) Vehicles with 2ZR-FE ECM (Engine) VALVEMATIC Driver* Vehicles with 2ZR-FAE Combination meter assembly Combination Meter Installed on all vehicles Power steering ECU assembly Power Steering (EPS) Installed on all vehicles Main body ECU (multiplex network body ECU) Main Body Installed on all vehicles Steering sensor Spiral cable (Steering Angle Sensor) Installed on all vehicles Airbag sensor assembly Airbag Installed on all vehicles Skid control ECU (brake actuator assembly) Skid Control (ABS/VSC/TRAC) Installed on all vehicles Air conditioning amplifier assembly Air Conditioning Amplifier Vehicles with automatic air conditioning system Vehicles with manual air conditioning system Certification ECU (smart key ECU assembly) Certification (Smart) Vehicles with smart key system Navigation receiver assembly Display and Navigation (AVN1) Vehicles with navigation receiver type Radio and display receiver assembly Display and Navigation (AVN1) Vehicles with radio and display type HINT: The names of ECUs and sensors shown on the Techstream display may differ from those shown in the DTC Table by ECU article that follows. *: If "ECM (Engine)" is displayed but "VALVEMATIC Driver" is not displayed, a local CAN communication error between the ECM and continuously variable valve lift controller assembly is suspected. (Output DTC: U011B)
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 the CAN Bus Check screen. NOTE: It may be possible to select buses that do not have ECUs or sensors from the bus selection pull-down menu. This is not a malfunction. (This occurs when optional devices are not on a sub bus that is monitored by a gateway function equipped ECU.) In the bus selection pull down menu, all buses applicable to the model are displayed (e.g. LIN communication buses are also displayed). Therefore, refer to the wiring diagrams to check the names of sub buses for CAN communication. Refer to «SYSTEM DIAGRAM [08/2013 - 04/2014]»(ref-635647-S41550259732014070300000) HINT: Different connection statuses are indicated by the background color of ECUs and sensors that are displayed. EXPLANATION OF CAN BUS CHECK SCREEN Bus Type Background Color Connection Status V Bus White Communication has been normal since the start of the CAN bus check. Yellow Communication stop occurred at least once since the start of the CAN bus check, but communication is currently occurring (unstable communication). Red Communication was established at least once since the start of the CAN bus check, but communication is currently not occurring (unstable communication). Not displayed Communication stop has continued since the start of the CAN bus check.*1 Sub Bus (gateway function equipped ECU that does not have history of connected ECUs)*2 White Communication has been normal since the start of the CAN bus check. Yellow Communication stop occurred at least once since the start of the CAN bus check, but communication is currently occurring (unstable communication). Red Communication was established at least once since the start of the CAN bus check, but communication is currently not occurring (unstable communication). Not displayed Communication stop has continued since the start of the CAN bus check.*1 Sub Bus (gateway function equipped ECU that has history of connected ECUs)*3 White Communication has been normal since the start of the CAN bus check. Yellow Communication stop occurred at least once since the start of the CAN bus check, but communication is currently occurring (unstable communication). Red Currently not communicating (either of the following): Communication stop has continued since the start of the CAN bus check. Communication was established at least once since the start of the CAN bus check, but communication is currently not occurring. Not displayed Either of the following: If a gateway function equipped ECU cannot communicate, the sub bus and ECUs connected to the sub bus will not be displayed. If no ECUs are connected to the sub bus, "There is no system found on the Communication Bus" will be displayed. HINT: Gateway function equipped ECUs relay signals between the ECUs connected to the different buses. *1: ECUs that are present in the vehicle but are not displayed on the CAN Bus Check screen. *2: Gateway function equipped ECU that does not memorize the sub bus ECUs that are connected to it. *3: Gateway function equipped ECU that memorizes the sub bus ECUs that are connected to it. If none of the connected ECUs are displayed, or there is no response from the vehicle to the Techstream, check the DLC3 branch and the V bus main bus lines for a malfunction. Observe the connection response screen for approximately 2 minutes to check for a change in connection status of the connected ECUs and sensors. HINT: If an open occurs in one of the lines of a CAN branch (except DLC3), output from the other branch line (the line that is not open) will be unstable and it may interfere with the response (display) of other ECUs and sensors. If the connection status changes during the inspection, repair the open in the branch line of the ECU or sensor that does not respond (is not detected) and then perform the CAN bus check again.
4. HOW TO INTERPRET CAN BUS CHECK SCREEN When a communication stop is currently occurring, the probable malfunctioning part can be determined from the CAN bus check and by using the following methods. NOTE: The following CAN bus wiring diagram is provided only as an example. This wiring diagram is different from the actual wiring diagram for this vehicle. HINT: When a communication stop is currently occurring, it is easier to determine the probable malfunctioning part from the CAN bus check rather than from communication DTCs. Wait for approximately 2 minutes after turning the ignition switch to ON (or simulate the driving conditions that enable the malfunction to be reproduced) and select "CAN Bus Check". Then observe the communication status of each ECU on the screen. If a communication error of only 1 ECU or sensor is indicated on the CAN Bus Check screen, a communication stop of the ECU or sensor is suspected. Example: Open in both CAN branch lines of ECU B on the V bus *a V Bus *b Sub Bus *c Terminating Resistor *d Location of Malfunction *e Not displayed or background color changes to red or yellow *f CAN Bus Check Screen HINT: When there are communication stops, ECUs are present in the vehicle even though they are not displayed on the CAN Bus Check screen. If communication errors for multiple ECUs or sensors are indicated on the CAN Bus Check screen, then a communication stop of the ECU or sensor that shows a more serious communication stop (an ECU or a sensor which is not displayed) is suspected. Example: Open in a CAN branch line for ECU D on the V bus *a Background color periodically changes to yellow or red *b Not displayed or background color is yellow or red *c Not displayed EXPLANATION OF CAN BUS CHECK SCREEN Bus Type Background Color Connection Status V Bus White Communication has been normal since the start of the CAN bus check. Yellow Communication stop occurred at least once since the start of the CAN bus check, but communication is currently occurring (unstable communication). Red Communication was established at least once since the start of the CAN bus check, but communication is currently not occurring (unstable communication). Not displayed Communication stop has continued since the start of the CAN bus check.*1 Sub Bus (gateway function equipped ECU that does not have history of connected ECUs)*2 White Communication has been normal since the start of the CAN bus check. Yellow Communication stop occurred at least once since the start of the CAN bus check, but communication is currently occurring (unstable communication). Red Communication was established at least once since the start of the CAN bus check, but communication is currently not occurring (unstable communication). Not displayed Communication stop has continued since the start of the CAN bus check.*1 Sub Bus (gateway function equipped ECU that has history of connected ECUs)*3 White Communication has been normal since the start of the CAN bus check. Yellow Communication stop occurred at least once since the start of the CAN bus check, but communication is currently occurring (unstable communication). Red Currently not communicating (either of the following): Communication stop has continued since the start of the CAN bus check. Communication was established at least once since the start of the CAN bus check, but communication is currently not occurring. Not displayed Either of the following: If a gateway function equipped ECU cannot communicate, sub bus and ECUs connected to the sub bus will not be displayed. If no ECUs are connected to the sub bus, "There is no system found on the Communication Bus" will be displayed. HINT: Gateway function equipped ECUs relay signals between the ECUs connected to the different buses. *1: ECUs that are present in the vehicle but are not displayed on the CAN Bus Check screen. *2: Gateway function equipped ECU that does not memorize the sub bus ECUs that are connected to it. *3: Gateway function equipped ECU that memorizes the sub bus ECUs that are connected to it. The example of the CAN Bus Check screen in the illustration shows the result of electrical noise on the CAN bus which is caused by an open in a CAN branch line of ECU D (output from the other branch line is unstable) and the communication of ECU C is also unstable. In addition, in this example, ECU C is equipped with a gateway function. Therefore, communication is also unstable between the sub bus ECUs of ECU C and the V bus. The example in the illustration shows that ECU D is not displayed on the CAN Bus Check screen. This indicates a more significant communication stop. In this case, a communication stop of ECU D is suspected. If a communication error is indicated on both the V bus and sub bus on the CAN Bus Check screen, suspect any communication stop displayed for the V bus first. Example: Open in both CAN branch lines of ECU C on the V bus *a Not displayed or background color changes to red HINT: In the CAN bus check, it is possible to confirm the communication status of ECUs connected to the V bus after connecting the Techstream to the DLC3. As for sub buses, it is possible to confirm which sub bus connected ECUs can communicate with a gateway function equipped ECU on the V bus. If a gateway function equipped ECU has a communication error, ECUs connected to the gateway function equipped ECU are also affected, and communication stops will be indicated. The CAN Bus Check screen in the illustration shows that ECU C has a gateway function and a communication stop in ECU C is suspected. If the CAN Bus Check screen indicates a communication stop only in the sub bus, a communication stop in the sub bus is suspected. Example: Open in both CAN branch lines of ECU G on the sub bus *a Background color changes to red HINT: A communication error in a sub bus does not affect the V bus or other buses. When a gateway function equipped ECU has memorized the ECUs that are connected to the sub bus, if any of the ECUs connected to the gateway function equipped ECU has a communication error, the background color changes to yellow or red. (The displayed name will not disappear.) If both of the V bus main bus lines are open, ECUs or sensors that are located farther away from the DLC3 than the open part will be displayed as a communication stop on the CAN Bus Check screen. (In this case, ECU A and B are not displayed or their background color changes to red.) *a V Bus *b Sub Bus *c Terminating Resistor *d Location of Malfunction *e Not displayed or background color is red *f CAN Bus Check Screen HINT: If a communication error occurs in an ECU, it is not displayed on the CAN Bus Check screen even though the ECU is present. If both of the sub bus main bus lines are open, ECUs that are located farther away from the gateway function equipped ECU than the open part will be displayed as a communication stop on the CAN Bus Check screen. (In this case, ECU I and J are not displayed or their background color changes to red.) *a V Bus *b Sub Bus *c Terminating Resistor *d Location of Malfunction *e Not displayed or background color is red *f CAN Bus Check Screen *g Gateway Function Equipped ECU - - When any of the following malfunctions occur, CAN communication cannot be established and almost all ECUs and sensors on the bus show a communication error on the CAN Bus Check screen. *a When any of the following malfunctions occur on the V bus *b When any of the following malfunctions occur on a sub bus *c Not displayed DETAILS OF MALFUNCTION Short between CAN lines (CANH and CANL) Short between a CAN line (CANH or CANL) and +B Short between a CAN line (CANH or CANL) and ground Open in a CAN main bus line HINT: When a malfunction occurs on the V bus, almost all ECUs and sensors on the V bus and sub bus indicate a communication error (almost all ECUs are not displayed). As communication with the gateway function equipped ECU that is connected to the V bus stops, communication from the ECUs connected to the sub bus that is monitored by the gateway function equipped ECU also stops (these ECUs are not displayed). When a malfunction occurs in a sub bus, almost all ECUs connected to the sub bus indicate a communication error. A communication error in a sub bus does not affect the V bus or other buses. The malfunctioning part can be determined by checking for a short circuit between CAN bus lines or between a CAN bus line and ground or +B short using an electrical tester.
5. HOW TO INTERPRET COMMUNICATION DTCS (DTCS THAT START WITH U) If a CAN communication error cannot be reproduced, determine the suspected malfunctioning part using the DTCs stored in ECUs that are connected to the CAN buses by following the procedure below. HINT: Communication DTCs (DTCs that start with U) indicate a communication error between the ECU that stores the DTC and the ECU that is indicated by the DTC. If multiple ECUs store a communication DTC for a particular ECU, a communication stop of the ECU is suspected. *a Items to be Checked - - NOTE: This DTC table is from another model, and is only used here to show an example of DTCs that are output when there is an open in a CAN branch line for the main body ECU. This table does not show DTCs applicable to this vehicle. Even though a DTC title may indicate a communication error with a specific ECU, the ECU name used in the DTC name on the Techstream may differ depending on the ECU that stores the DTC. (Regarding output DTCs, refer to step 6 and the DTC chart for each ECU.) 6 HINT: As multiple ECUs indicate a communication stop with the main body ECU, the possibility of a communication stop of the main body ECU is high. If almost all of the communication DTCs of an ECU are stored, a communication stop of the ECU is suspected. *a Items to be Checked - - NOTE: This DTC table is from another model, and is only used here to show an example of DTCs that are output when there is an open in a CAN branch line for the main body ECU. This table does not show DTCs applicable to this vehicle. HINT: If almost all of the DTCs of the main body ECU are stored, the possibility of a communication stop of the main body ECU is high. When a CAN communication error occurs, many DTCs are output. DTCs other than communication error DTCs (such as DTCs that start with C or B) and communication DTCs for the ABS system are important DTCs, however it may be easier to determine the malfunctioning part by examining the overall situation without considering these DTCs. To help determine the part of the sub bus that has a communication error, prioritize the communication stop DTCs stored in the gateway function equipped ECU. *a Items to be Checked *b ECM *c Gateway Function Equipped ECU *d Location of Malfunction *e V Bus *f Sub Bus NOTE: This DTC table is from another model, and is only used here to show the ECUs connected to both a V bus and a sub bus. It shows DTCs output when there is an open in the main bus lines for the ECM on the sub bus. This table does not show DTCs applicable to this vehicle. HINT: As gateway function equipped ECUs (sub bus monitor ECU) monitor signals from all ECUs that are connected to sub buses, gateway function equipped ECUs can detect ECUs with a communication stop more accurately. When there is a communication stop for the gateway function equipped ECU (gateway), communication with ECUs connected to other buses such as the V bus stops. Therefore, communication DTCs for ECUs connected to other buses are also stored. When any of the following malfunctions occurs, many DTCs are likely to be output from many ECUs. Because of this, it may be difficult to determine the probable malfunctioning part. Short between CAN lines (CANH and CANL) Short between a CAN line (CANH or CANL) and ground Short between a CAN line (CANH or CANL) and +B Open in a CAN branch line (CANH or CANL) of an ECU or sensor Open in a CAN main bus line (CANH or CANL) between 2 ECUs that have a terminating resistor
6. DTC TABLE BY ECU HINT: In the CAN communication system, the CAN communication DTCs of each ECU can be displayed using the Techstream. If CAN communication system DTCs are output, the malfunction cannot be determined only by the DTCs. Perform troubleshooting according to How to Proceed with Troubleshooting. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [08/2013 - ]»(ref-635647-S27781195552014070300000) If the system function temporarily returns to normal, DTCs may not be output again even though the following DTC check procedures are used. ECM (2ZR-FE) / Techstream Display "Engine and ECT" Powertrain > Engine and ECT > Trouble Codes HINT: This ECU uses the CAN communication system for DTC communication. ECM / TECHSTREAM DISPLAY "ENGINE AND ECT" DTC Detection Item DTC Detection Condition DTC Detection Pre-condition DTC Check Procedure Warning Indication in Meter DTC Storage Method U0129 Lost Communication with Skid Control ECU The ECM does not receive data from the skid control ECU (brake actuator assembly) for 2.22 seconds or more. Both conditions are met: The ignition switch is ON for 2.1 seconds or more. The power source voltage of the ECM is 10.5 V or more. Turn the ignition switch to ON and wait at least 4.32 seconds. MIL illuminates. DTC is stored until it is cleared using the Techstream. ECM (2ZR-FAE) / Techstream Display "Engine and ECT" Powertrain > Engine and ECT > Trouble Codes HINT: This ECU uses the CAN communication system for DTC communication. *: This DTC is stored due to a local CAN communication error between the ECM and continuously variable valve lift controller assembly. ECM / TECHSTREAM DISPLAY "ENGINE AND ECT" DTC Detection Item DTC Detection Condition DTC Detection Pre-condition DTC Check Procedure Warning Indication in Meter DTC Storage Method U0129 Lost Communication with Brake System Control Module The ECM does not receive data from the brake actuator assembly for 2.22 seconds or more. Both conditions are met: The ignition switch is ON for 2.1 seconds or more. The power source voltage of the ECM is 10.5 V or more. Turn the ignition switch to ON and wait at least 4.32 seconds. MIL illuminates. DTC is stored until it is cleared using the Techstream. U011B* Lost Communication with Rocker Arm Control Module "A" The ECM does not receive data from the continuously variable valve lift controller assembly for 0.99 seconds or more. Both conditions are met: The ignition switch is ON for 1 second or more. The power source voltage of the ECM is 10.5 V or more. Turn the ignition switch to ON and wait at least 1.99 seconds. MIL illuminates. DTC is stored until it is cleared using the Techstream. Skid Control ECU (Brake Actuator Assembly) / Techstream Display "ABS/VSC/TRAC" Chassis > ABS/VSC/TRAC > Trouble Codes HINT: This ECU uses the CAN communication system for DTC communication. SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY) / TECHSTREAM DISPLAY "ABS/VSC/TRAC" DTC Detection Item DTC Detection Condition DTC Detection Pre-condition DTC Check Procedure Warning Indication in Meter DTC Storage Method U0073 Control Module Communication Bus OFF The skid control ECU (brake actuator assembly) cannot send/receive data (bus off) once or more within 5 seconds. Both conditions are met: The ignition switch is ON for 1 second or more. The power source voltage of the skid control ECU (brake actuator assembly) (IG1 terminal voltage) is between 10 and 17.4 V. Turn the ignition switch to ON and wait at least 6 seconds. ABS warning light illuminates. Slip indicator light illuminates. Brake warning light illuminates. DTC is stored until it is cleared using the Techstream. U0100 Lost Communication with ECM / PCM The skid control ECU (brake actuator assembly) does not receive data from the ECM for 2 seconds or more. All conditions are met: The ignition switch is ON for 1 second or more. Vehicle speed is 15 km/h (9 mph) or more. The power source voltage of the skid control ECU (brake actuator assembly) (IG1 terminal voltage) is between 10 and 17.4 V. Turn the ignition switch to ON and drive the vehicle at a speed of 15 km/h (9 mph) or more for 3 seconds or more. Slip indicator light illuminates. DTC is stored until it is cleared using the Techstream. U0124 Lost Communication with Lateral Acceleration Sensor Module Either of the following conditions is met: When vehicle speed is 7 km/h (4 mph) or more, the skid control ECU (brake actuator assembly) does not receive data from the airbag sensor assembly for 1 second or more. The following condition occurs 10 times or more within 60 seconds: The skid control ECU (brake actuator assembly) does not receive data from the airbag sensor assembly once or more within 5 seconds. Both conditions are met: The ignition switch is ON for 1 second or more. The power source voltage of the skid control ECU (brake actuator assembly) (IG1 terminal voltage) is between 10 and 17.4 V. Turn the ignition switch to ON and wait at least 61 seconds, and then drive the vehicle at a speed of 7 km/h (4 mph) or more for 1 second or more. ABS warning light illuminates. Slip indicator light illuminates. DTC is stored until it is cleared using the Techstream. U0126 Lost Communication with Steering Angle Sensor Module Either of the following conditions is met: The skid control ECU (brake actuator assembly) does not receive data from the steering sensor for 1 second or more. The following condition occurs 10 times or more within 60 seconds: The skid control ECU (brake actuator assembly) does not receive data from the steering sensor once or more within 5 seconds. Both conditions are met: The ignition switch is ON for 1 second or more. The power source voltage of the skid control ECU (brake actuator assembly) (IG1 terminal voltage) is between 10 and 17.4 V. Turn the ignition switch to ON and wait at least 61 seconds. Slip indicator light illuminates. DTC is stored until it is cleared using the Techstream. Power Steering ECU Assembly / Techstream Display "EMPS" Chassis > EMPS > Trouble Codes HINT: This ECU uses the CAN communication system for DTC communication. POWER STEERING ECU ASSEMBLY / TECHSTREAM DISPLAY "EMPS" DTC Detection Item DTC Detection Condition DTC Detection Pre-condition DTC Check Procedure Warning Indication in Meter DTC Storage Method U0100 Lost Communication with ECM / PCM "A" The power steering ECU assembly does not receive data from the ECM for 300 seconds or more. All conditions are met: The ignition switch is ON for 3 seconds or more. Vehicle speed is 20 km/h (12 mph) or more. The power source voltage of the power steering ECU assembly is 9 V or more. Drive the vehicle at a speed of 20 km/h (12 mph) or more for 300 seconds or more. EPS warning light illuminates. DTC remains stored only while malfunction is occurring. U0129 Lost Communication with Brake System Control Module The power steering ECU assembly cannot receive data from the skid control ECU (brake actuator assembly) for 2.34 seconds or more. Both conditions are met: The ignition switch is ON for 3 seconds or more. The power source voltage of the power steering ECU assembly is 9 V or more. Turn the ignition switch to ON and wait at least 5.34 seconds. EPS warning light illuminates. DTC remains stored only while malfunction is occurring. Main Body ECU (Multiplex Network Body ECU) / Techstream Display "Main Body" Body Electrical > Main Body > Trouble Codes HINT: This ECU uses the CAN communication system for DTC communication. *1: w/ Smart Key System *2: w/ Air Conditioning System MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) / TECHSTREAM DISPLAY "MAIN BODY" DTC Detection Item DTC Detection Condition DTC Detection Pre-condition DTC Check Procedure Warning Indication in Meter DTC Storage Method U0100 Lost Communication with ECM / PCM "A" The main body ECU (multiplex network body ECU) does not receive data from the ECM for 10 seconds or more. Both conditions are met: Power source status change (+B OFF --> ON, ACC ON <----> OFF, IG ON <----> OFF) is detected and 10 seconds or more elapse. The power source voltage of the main body ECU (multiplex network body ECU) is 10 V or more. Turn the ignition switch to ON and wait at least 20 seconds. - DTC is stored until it is cleared using the Techstream. U0101 Lost Communication with TCM The main body ECU (multiplex network body ECU) does not receive data from the ECM for 10 seconds or more. Both conditions are met: Power source status change (+B OFF --> ON, ACC ON <----> OFF, IG ON <----> OFF) is detected and 10 seconds or more elapse. The power source voltage of the main body ECU (multiplex network body ECU) is 10 V or more. Turn the ignition switch to ON and wait at least 20 seconds. - DTC is stored until it is cleared using the Techstream. U0120*1 Lost Communication with Starter / Generator Control Module The main body ECU (multiplex network body ECU) does not receive data from the certification ECU (smart key ECU assembly) for 10 seconds or more. Both conditions are met: Power source status change (+B OFF --> ON, ACC ON <----> OFF, IG ON <----> OFF) is detected and 10 seconds or more elapse. The power source voltage of the main body ECU (multiplex network body ECU) is 10 V or more. Turn the ignition switch to ON and wait at least 20 seconds. - DTC is stored until it is cleared using the Techstream. U0151 Lost Communication with Restraints Control Module The main body ECU (multiplex network body ECU) does not receive data from the airbag sensor assembly for 10 seconds or more. Both conditions are met: Power source status change (+B OFF --> ON, ACC ON <----> OFF, IG ON <----> OFF) is detected and 10 seconds or more elapse. The power source voltage of the main body ECU (multiplex network body ECU) is 10 V or more. Turn the ignition switch to ON and wait at least 20 seconds. - DTC is stored until it is cleared using the Techstream. U0155 Lost Communication with Instrument Panel Cluster (IPC) Control Module The main body ECU (multiplex network body ECU) does not receive data from the combination meter assembly for 10 seconds or more. Both conditions are met: Power source status change (+B OFF --> ON, ACC ON <----> OFF, IG ON <----> OFF) is detected and 10 seconds or more elapse. The power source voltage of the main body ECU (multiplex network body ECU) is 10 V or more. Turn the ignition switch to ON and wait at least 20 seconds. - DTC is stored until it is cleared using the Techstream. U0164*2 Lost Communication with HVAC Control Module The main body ECU (multiplex network body ECU) does not receive data from the air conditioning amplifier assembly for 10 seconds or more. Both conditions are met: Power source status change (+B OFF --> ON, ACC ON <----> OFF, IG ON <----> OFF) is detected and 10 seconds or more elapse. The power source voltage of the main body ECU (multiplex network body ECU) is 10 V or more. Turn the ignition switch to ON and wait at least 20 seconds. - DTC is stored until it is cleared using the Techstream. U0327*1 Software Incompatibility with Vehicle Security Control Module The main body ECU (multiplex network body ECU) does not receive data from the certification ECU (smart key ECU assembly) for 10 seconds or more. Both conditions are met: Power source status change (+B OFF --> ON, ACC ON <----> OFF, IG ON <----> OFF) is detected and 10 seconds or more elapse. The power source voltage of the main body ECU (multiplex network body ECU) is 10 V or more. Turn the ignition switch to ON and wait at least 20 seconds. - DTC is stored until it is cleared using the Techstream. Certification ECU (Smart Key ECU Assembly) (w/ Smart Key System) / Techstream Display "Smart Key" Body Electrical > Smart Key > Trouble Codes HINT: This ECU uses the CAN communication system for DTC communication. CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) (W/ SMART KEY SYSTEM) / TECHSTREAM DISPLAY "SMART KEY" DTC Detection Item DTC Detection Condition DTC Detection Pre-condition DTC Check Procedure Warning Indication in Meter DTC Storage Method U0100 Lost Communication with ECM / PCM The certification ECU (smart key ECU assembly) does not receive data from the ECM for 10 seconds or more. Both conditions are met: Power source status change (+B OFF --> ON, ACC ON <----> OFF, IG ON <----> OFF) is detected and 10 seconds or more elapse. The power source voltage of the certification ECU (smart key ECU assembly) is 10 V or more. Turn the ignition switch to ON and wait at least 20 seconds. - DTC is stored until it is cleared using the Techstream. U0142 Lost Communication with Main Body ECU The certification ECU (smart key ECU assembly) does not receive data from the main body ECU (multiplex network body ECU) for 10 seconds or more. Both conditions are met: Power source status change (+B OFF --> ON, ACC ON <----> OFF, IG ON <----> OFF) is detected and 10 seconds or more elapse. The power source voltage of the certification ECU (smart key ECU assembly) is 10 V or more. Turn the ignition switch to ON and wait at least 20 seconds. - DTC is stored until it is cleared using the Techstream. U0155 Lost Communication with Combination Meter The certification ECU (smart key ECU assembly) does not receive data from the combination meter assembly for 10 seconds or more. Both conditions are met: Power source status change (+B OFF --> ON, ACC ON <----> OFF, IG ON <----> OFF) is detected and 10 seconds or more elapse. The power source voltage of the certification ECU (smart key ECU assembly) is 10 V or more. Turn the ignition switch to ON and wait at least 20 seconds. - DTC is stored until it is cleared using the Techstream. Certification ECU (Smart Key ECU Assembly) (w/ Smart Key System) / Techstream Display "Power Source Control" Body Electrical > Power Source Control > Trouble Codes HINT: This ECU uses the CAN communication system for DTC communication. CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) (W/ SMART KEY SYSTEM) / TECHSTREAM DISPLAY "POWER SOURCE CONTROL" DTC Detection Item DTC Detection Condition DTC Detection Pre-condition DTC Check Procedure Warning Indication in Meter DTC Storage Method U0100 Lost Communication with ECM / PCM The certification ECU (smart key ECU assembly) does not receive data from the ECM for 3.1 seconds or more. Both conditions are met: The ignition switch is ON for 10 seconds or more. The power source voltage of the certification ECU (smart key ECU assembly) is 9.5 V or more. Turn the ignition switch to ON and wait at least 13.1 seconds. - DTC is stored until it is cleared using the Techstream. U0140 Lost Communication with Main Body ECU The certification ECU (smart key ECU assembly) does not receive data from the main body ECU (multiplex network body ECU) for 3 seconds or more. Both conditions are met: The ignition switch is ON for 10 seconds or more. The power source voltage of the certification ECU (smart key ECU assembly) is 10 V or more. Turn the ignition switch to ON and wait at least 13 seconds. - DTC is stored until it is cleared using the Techstream. U0155 Lost Communication with Combination Meter The certification ECU (smart key ECU assembly) does not receive data from the combination meter assembly for 10 seconds or more. Both conditions are met: The ignition switch is ON for 10 seconds or more. The power source voltage of the certification ECU (smart key ECU assembly) is 10 V or more. Turn the ignition switch to ON and wait at least 20 seconds. - DTC is stored until it is cleared using the Techstream. Certification ECU (Smart Key ECU Assembly) (w/ Smart Key System) / Techstream Display "Starting Control" Body Electrical > Starting Control > Trouble Codes HINT: This ECU uses the CAN communication system for DTC communication. CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) (W/ SMART KEY SYSTEM) / TECHSTREAM DISPLAY "STARTING CONTROL" DTC Detection Item DTC Detection Condition DTC Detection Pre-condition DTC Check Procedure Warning Indication in Meter DTC Storage Method U0100 Lost Communication with ECM / PCM The certification ECU (smart key ECU assembly) does not receive data from the ECM for 2 seconds or more. Both conditions are met: The ignition switch is ON. The power source voltage of the certification ECU (smart key ECU assembly) is 10.5 V or more. Turn the ignition switch to ON and wait at least 2 seconds. - DTC remains stored only while malfunction is occurring. Air Conditioning Amplifier Assembly (w/ Air Conditioning System) / Techstream Display "Air Conditioner" Body Electrical > Air Conditioner > Trouble Codes HINT: This ECU uses the CAN communication system for DTC communication. AIR CONDITIONING AMPLIFIER ASSEMBLY (W/ AIR CONDITIONING SYSTEM) / TECHSTREAM DISPLAY "AIR CONDITIONER" DTC Detection Item DTC Detection Condition DTC Detection Pre-condition DTC Check Procedure Warning Indication in Meter DTC Storage Method U0100 Lost Communication with ECM The air conditioning amplifier assembly does not receive data from the ECM for 5 seconds or more. Both conditions are met: The ignition switch is ON. The power source voltage of the air conditioning amplifier assembly is 10 V or more. Turn the ignition switch to ON and wait at least 5 seconds. - DTC is stored until it is cleared using the Techstream. U0131 Lost Communication with Electric Power Steering ECU The air conditioning amplifier assembly does not receive data from the power steering ECU assembly for 5 seconds or more. Both conditions are met: The ignition switch is ON. The power source voltage of the air conditioning amplifier assembly is 10 V or more. Turn the ignition switch to ON and wait at least 5 seconds. - DTC is stored until it is cleared using the Techstream. U0142 Lost Communication with Main Body ECU The air conditioning amplifier assembly does not receive data from the main body ECU (multiplex network body ECU) for 5 seconds or more. Both conditions are met: The ignition switch is ON. The power source voltage of the air conditioning amplifier assembly is 10 V or more. Turn the ignition switch to ON and wait at least 5 seconds. - DTC is stored until it is cleared using the Techstream. U0155 Lost Communication with Combination Meter The air conditioning amplifier assembly does not receive data from the combination meter assembly for 5 seconds or more. Both conditions are met: The ignition switch is ON. The power source voltage of the air conditioning amplifier assembly is 10 V or more. Turn the ignition switch to ON and wait at least 5 seconds. - DTC is stored until it is cleared using the Techstream. Navigation Receiver Assembly (for Navigation Receiver Type) / Techstream Display "Navigation System" Body Electrical > Navigation System > Trouble Codes HINT: This ECU uses the CAN communication system for DTC communication. *: w/ Air Conditioning System NAVIGATION RECEIVER ASSEMBLY (FOR NAVIGATION RECEIVER TYPE) / TECHSTREAM DISPLAY "NAVIGATION SYSTEM" DTC Detection Item DTC Detection Condition DTC Detection Pre-condition DTC Check Procedure Warning Indication in Meter DTC Storage Method U0073 Sending Malfunction (Navigation to APGS) The navigation receiver assembly does not send/receive data for 5 seconds or more. Both conditions are met: The ignition switch is ON. The power source voltage of the navigation receiver assembly is 9.5 V or more. Turn the ignition switch to ON and wait at least 5 seconds. Displays messages on the multi-information display. DTC is stored until it is cleared using the Techstream. U0100 Engine ECU Communication The navigation receiver assembly does not receive data from the ECM for 12 seconds or more. Both conditions are met: The ignition switch is ON for 1 second or more. The power source voltage of the navigation receiver assembly is 9.5 V or more. Turn the ignition switch to ON and wait at least 13 seconds. - DTC is stored until it is cleared using the Techstream. U0129 VSC (ECB) ECU Communication The navigation receiver assembly does not receive data from the skid control ECU (brake actuator assembly) for 1 second or more. Both conditions are met: The ignition switch is ON for 1 second or more. The power source voltage of the navigation receiver assembly is 9.5 V or more. Turn the ignition switch to ON and wait at least 2 seconds. - DTC is stored until it is cleared using the Techstream. U0140 Lost Communication with Body Control Module The navigation receiver assembly does not receive data from the main body ECU (multiplex network body ECU) for 10 seconds or more. Both conditions are met: The ignition switch is ON for 1 second or more. The power source voltage of the navigation receiver assembly is 9.5 V or more. Turn the ignition switch to ON and wait at least 11 seconds. - DTC is stored until it is cleared using the Techstream. U0155 Meter ECU Communication The navigation receiver assembly does not receive data from the combination meter assembly for 30 seconds or more. Both conditions are met: The ignition switch is ON for 1 second or more. The power source voltage of the navigation receiver assembly is 9.5 V or more. Turn the ignition switch to ON and wait at least 31 seconds. - DTC is stored until it is cleared using the Techstream. U0164* Air Conditioner ECU Communication The navigation receiver assembly does not receive data from the air conditioning amplifier assembly for 10 seconds or more. Both conditions are met: The ignition switch is ON for 1 second or more. The power source voltage of the navigation receiver assembly is 9.5 V or more. Turn the ignition switch to ON and wait at least 11 seconds. Displays messages on the multi-information display. DTC is stored until it is cleared using the Techstream. Radio and Display Receiver Assembly (for Radio and Display Type) / Techstream Display "Navigation System" Body Electrical > Navigation System > Trouble Codes HINT: This ECU uses the CAN communication system for DTC communication. *: w/ Air Conditioning System RADIO AND DISPLAY RECEIVER ASSEMBLY (FOR RADIO AND DISPLAY TYPE) / TECHSTREAM DISPLAY "NAVIGATION SYSTEM" DTC Detection Item DTC Detection Condition DTC Detection Pre-condition DTC Check Procedure Warning Indication in Meter DTC Storage Method U0073 Sending Malfunction (Navigation to APGS) The radio and display receiver assembly does not send/receive data for 5 seconds or more. Both conditions are met: The ignition switch is ON. The power source voltage of the radio and display receiver assembly is 9.5 V or more. Turn the ignition switch to ON and wait at least 5 seconds. Displays messages on the multi-information display. DTC is stored until it is cleared using the Techstream. U0100 Engine ECU Communication The radio and display receiver assembly does not receive data from the ECM for 12 seconds or more. Both conditions are met: The ignition switch is ON for 1 second or more. The power source voltage of the radio and display receiver assembly is 9.5 V or more. Turn the ignition switch to ON and wait at least 13 seconds. - DTC is stored until it is cleared using the Techstream. U0129 VSC (ECB) ECU Communication The radio and display receiver assembly does not receive data from the skid control ECU (brake actuator assembly) for 1 second or more. Both conditions are met: The ignition switch is ON for 1 second or more. The power source voltage of the radio and display receiver assembly is 9.5 V or more. Turn the ignition switch to ON and wait at least 2 seconds. - DTC is stored until it is cleared using the Techstream. U0140 Lost Communication with Body Control Module The radio and display receiver assembly does not receive data from the main body ECU (multiplex network body ECU) for 10 seconds or more. Both conditions are met: The ignition switch is ON for 1 second or more. The power source voltage of the radio and display receiver assembly is 9.5 V or more. Turn the ignition switch to ON and wait at least 11 seconds. - DTC is stored until it is cleared using the Techstream. U0155 Meter ECU Communication The radio and display receiver assembly does not receive data from the combination meter assembly for 30 seconds or more. Both conditions are met: The ignition switch is ON for 1 second or more. The power source voltage of the radio and display receiver assembly is 9.5 V or more. Turn the ignition switch to ON and wait at least 31 seconds. - DTC is stored until it is cleared using the Techstream. U0164* Air Conditioner ECU Communication The radio and display receiver assembly does not receive data from the air conditioning amplifier assembly for 10 seconds or more. Both conditions are met: The ignition switch is ON for 1 second or more. The power source voltage of the radio and display receiver assembly is 9.5 V or more. Turn the ignition switch to ON and wait at least 11 seconds. Displays messages on the multi-information display. DTC is stored until it is cleared using the Techstream. Combination Meter Assembly / Techstream Display "Combination Meter" Body Electrical > Combination Meter > Trouble Codes HINT: This ECU uses the CAN communication system for DTC communication. COMBINATION METER ASSEMBLY / TECHSTREAM DISPLAY "COMBINATION METER" DTC Detection Item DTC Detection Condition DTC Detection Pre-condition DTC Check Procedure Warning Indication in Meter DTC Storage Method U0100 Lost Communication with ECM / PCM "A" The combination meter assembly does not receive data from the ECM for 2 seconds or more. Both conditions are met: The ignition switch is ON. The power source voltage of the combination meter assembly is 9.5 V or more. Turn the ignition switch to ON and wait at least 2 seconds. - DTC is stored until it is cleared using the Techstream. U0129 Lost Communication with Brake System Control Module The combination meter assembly does not receive data from the skid control ECU (brake actuator assembly) for 2 seconds or more. Both conditions are met: The ignition switch is ON. The power source voltage of the combination meter assembly is 9.5 V or more. Turn the ignition switch to ON and wait at least 2 seconds. - DTC is stored until it is cleared using the Techstream. U0131 Lost Communication with Power Steering Control Module The combination meter assembly does not receive data from the power steering ECU assembly for 3 seconds or more. Both conditions are met: The ignition switch is ON. The power source voltage of the combination meter assembly is 9.5 V or more. Turn the ignition switch to ON and wait at least 3 seconds. EPS warning light illuminates. DTC is stored until it is cleared using the Techstream. U0142 Lost Communication with Body Control Module "B" The combination meter assembly does not receive data from the main body ECU (multiplex network body ECU) for 10 seconds or more. Both conditions are met: The ignition switch is ON. The power source voltage of the combination meter assembly is 9.5 V or more. Turn the ignition switch to ON and wait at least 10 seconds. - DTC is stored until it is cleared using the Techstream. U0151 Lost Communication with Restraints Control Module The combination meter assembly does not receive data from the airbag sensor assembly for 10 seconds or more. Both conditions are met: The ignition switch is ON. The power source voltage of the combination meter assembly is 9.5 V or more. Turn the ignition switch to ON and wait at least 10 seconds. SRS warning light illuminates. DTC is stored until it is cleared using the Techstream. Airbag Sensor Assembly / Techstream Display "SRS Airbag" HINT: The airbag sensor assembly is connected to the CAN communication system, but the airbag sensor assembly does not store or output CAN communication DTCs. Steering Sensor HINT: The steering sensor is connected to the CAN communication system, but the steering sensor does not store or output CAN communication DTCs.
7. DTC COMBINATION TABLE (OPEN IN CAN BRANCH OF V BUS, PAST COMMUNICATION ERROR) Regarding a past communication error of an ECU and sensor connected to the V bus (in this case, normal is displayed when performing the CAN bus check, but communication DTCs are output), the probable CAN branch that had a malfunction can be determined based on the following DTC combination table. HINT: Based on the table below and DTCs output from ECUs connected via CAN communication, the probable part for which communication stop occurred can be determined. Regarding an open in a CAN branch and a communication stop that is currently occurring, the malfunctioning part can be confirmed easily by performing the CAN bus check using the Techstream because the ECU or sensor connected to the CAN branch does not respond (the ECU or sensor name will not be displayed on the screen). If an open in a CAN main bus line, a short between the CAN bus lines (CANH and CANL) or a +B or ground short in the CAN bus occurs, DTCs of almost all ECUs (or sensors) on the CAN bus may be output, or a message indicating a communication error may be displayed on the Techstream screen. In this case, check the resistance of the CAN bus (steps 7 to 9) first. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [08/2013 - ]»(ref-635647-S27781195552014070300000) If an open occurs in just one of the lines of a CAN branch, DTCs which are not related to malfunctioning parts may be output (DTCs may be displayed randomly), or a message indicating a communication error may be displayed. - Trouble Mode (Open in One CAN Branch Line) V Bus Output ECU Output DTC Center Airbag Sensor Communication Stop Mode Refer to «Center Airbag Sensor Communication Stop Mode [08/2013 - ]»(ref-635652-S26690276942014070300000) Brake Actuator (Skid Control ECU) Communication Stop Mode Refer to «Brake Actuator (Skid Control ECU) Communication Stop Mode [08/2013 - 04/2014]»(ref-635652-S21167907862014070300000) Air Conditioning Amplifier Communication Stop Mode Refer to «Air Conditioning Amplifier Communication Stop Mode [08/2013 - ]»(ref-635652-S35759403902014070300000) V Bus Airbag Sensor Assembly - - - - Skid Control ECU (Brake Actuator Assembly) U0073 X X <-- U0100 <-- X <-- U0124 X X <-- U0126 <-- X <-- Air Conditioning Amplifier Assembly U0100 <-- <-- X U0131 <-- <-- X U0142 <-- <-- X U0155 <-- <-- X Navigation Receiver Assembly* U0100 <-- <-- <-- U0129 <-- X <-- U0140 <-- <-- <-- U0155 <-- <-- <-- U0164 <-- <-- X Radio and Display Receiver Assembly* U0100 <-- <-- <-- U0129 <-- X <-- U0140 <-- <-- <-- U0155 <-- <-- <-- U0164 <-- <-- X Certification ECU (Smart Key ECU Assembly) (Entry function) U0100 <-- <-- <-- U0142 <-- <-- <-- U0155 <-- <-- <-- Certification ECU (Smart Key ECU Assembly) (Power source switching function) U0100 <-- <-- <-- U0140 <-- <-- <-- U0155 <-- <-- <-- Certification ECU (Smart Key ECU Assembly) (Start function) U0100 <-- <-- <-- Power Steering ECU Assembly U0100 <-- <-- <-- U0129 <-- X <-- ECM (for 2ZR-FE) U0129 <-- X <-- ECM (for 2ZR-FAE) U0129 <-- X <-- V Bus Main Body ECU (Multiplex Network Body ECU) U0100 <-- <-- <-- U0101 <-- <-- <-- U0120 <-- <-- <-- U0151 X <-- <-- U0155 <-- <-- <-- U0164 <-- <-- X U0327 <-- <-- <-- Combination Meter Assembly U0100 <-- <-- <-- U0129 <-- X <-- U0131 <-- <-- <-- U0142 <-- <-- <-- U0151 X <-- <-- Steering Sensor - - - - - Trouble Mode (Open in One CAN Branch Line) V Bus Output ECU Output DTC Navigation Receiver Assembly Communication Stop Mode Refer to «Navigation Receiver Assembly Communication Stop Mode [08/2013 - ]»(ref-635652-S22668048202014070300000) Radio Receiver Assembly Communication Stop Mode Refer to «Radio Receiver Assembly Communication Stop Mode [08/2013 - ]»(ref-635652-S19578454902014070300000) Certification ECU Communication Stop Mode Refer to «Certification ECU Communication Stop Mode [08/2013 - ]»(ref-635652-S04039999142014070300000) Power Steering ECU Communication Stop Mode Refer to «Power Steering ECU Communication Stop Mode [08/2013 - ]»(ref-635652-S09635089812014070300000) V Bus Airbag Sensor Assembly - - - - - Skid Control ECU (Brake Actuator Assembly) U0073 <-- <-- <-- <-- U0100 <-- <-- <-- <-- U0124 <-- <-- <-- <-- U0126 <-- <-- <-- <-- Air Conditioning Amplifier Assembly U0100 <-- <-- <-- <-- U0131 <-- <-- <-- X U0142 <-- <-- <-- <-- U0155 <-- <-- <-- <-- Navigation Receiver Assembly* U0100 X - <-- <-- U0129 X - <-- <-- U0140 X - <-- <-- U0155 X - <-- <-- U0164 X - <-- <-- Radio and Display Receiver Assembly* U0100 - X <-- <-- U0129 - X <-- <-- U0140 - X <-- <-- U0155 - X <-- <-- U0164 - X <-- <-- Certification ECU (Smart Key ECU Assembly) (Entry function) U0100 <-- <-- X <-- U0142 <-- <-- X <-- U0155 <-- <-- X <-- V Bus Certification ECU (Smart Key ECU Assembly) (Power source switching function) U0100 <-- <-- X <-- U0140 <-- <-- X <-- U0155 <-- <-- X <-- Certification ECU (Smart Key ECU Assembly) (Start function) U0100 <-- <-- X <-- Power Steering ECU Assembly U0100 <-- <-- <-- X U0129 <-- <-- <-- X ECM (for 2ZR-FE) U0129 <-- <-- <-- <-- ECM (for 2ZR-FAE) U0129 <-- <-- <-- <-- Main Body ECU (Multiplex Network Body ECU) U0100 <-- <-- <-- <-- U0101 <-- <-- <-- <-- U0120 <-- <-- X <-- U0151 <-- <-- <-- <-- U0155 <-- <-- <-- <-- U0164 <-- <-- <-- <-- U0327 <-- <-- X <-- Combination Meter Assembly U0100 <-- <-- <-- <-- U0129 <-- <-- <-- <-- U0131 <-- <-- <-- <-- U0142 <-- <-- <-- <-- U0151 <-- <-- <-- <-- Steering Sensor - - - - - - Trouble Mode (Open in One CAN Branch Line) V Bus Output ECU Output DTC Main Body ECU Communication Stop Mode Refer to «Main Body ECU Communication Stop Mode [08/2013 - ]»(ref-635652-S35648032042014070300000) Steering Angle Sensor Communication Stop Mode Refer to «Steering Angle Sensor Communication Stop Mode [08/2013 - ]»(ref-635652-S10078873042014070300000) DLC3 V Bus Airbag Sensor Assembly - - - - Skid Control ECU (Brake Actuator Assembly) U0073 <-- <-- <-- U0100 <-- <-- <-- U0124 <-- <-- <-- U0126 <-- X <-- Air Conditioning Amplifier Assembly U0100 <-- <-- <-- U0131 <-- <-- <-- U0142 X <-- <-- U0155 <-- <-- <-- V Bus Navigation Receiver Assembly* U0100 <-- <-- <-- U0129 <-- <-- <-- U0140 X <-- <-- U0155 <-- <-- <-- U0164 <-- <-- <-- Radio and Display Receiver Assembly* U0100 <-- <-- <-- U0129 <-- <-- <-- U0140 X <-- <-- U0155 <-- <-- <-- U0164 <-- <-- <-- Certification ECU (Smart Key ECU Assembly) (Entry function) U0100 <-- <-- <-- U0142 X <-- <-- U0155 <-- <-- <-- Certification ECU (Smart Key ECU Assembly) (Power source switching function) U0100 <-- <-- <-- U0140 X <-- <-- U0155 <-- <-- <-- Certification ECU (Smart Key ECU Assembly) (Start function) U0100 <-- <-- <-- Power Steering ECU Assembly U0100 <-- <-- <-- U0129 <-- <-- <-- ECM (for 2ZR-FE) U0129 <-- <-- <-- ECM (for 2ZR-FAE) U0129 <-- <-- <-- Main Body ECU (Multiplex Network Body ECU) U0100 X <-- <-- U0101 X <-- <-- U0120 X <-- <-- U0151 X <-- <-- U0155 X <-- <-- U0164 X <-- <-- U0327 X <-- <-- Combination Meter Assembly U0100 <-- <-- <-- U0129 <-- <-- <-- U0131 <-- <-- <-- U0142 X <-- <-- U0151 <-- <-- <-- Steering Sensor - - - - HINT: X: DTC is likely to be output. <--: DTC is unlikely to be output. -: DTC is not output. *: DTC U0073 may be stored when communication is lost. - Trouble Mode (Open in Both CAN Branch Lines) V Bus Output ECU Output DTC Center Airbag Sensor Communication Stop Mode Refer to «Center Airbag Sensor Communication Stop Mode [08/2013 - ]»(ref-635652-S26690276942014070300000) Brake Actuator (Skid Control ECU) Communication Stop Mode Refer to «Brake Actuator (Skid Control ECU) Communication Stop Mode [08/2013 - 04/2014]»(ref-635652-S21167907862014070300000) Air Conditioning Amplifier Communication Stop Mode Refer to «Air Conditioning Amplifier Communication Stop Mode [08/2013 - ]»(ref-635652-S35759403902014070300000) V Bus Airbag Sensor Assembly - - - - Skid Control ECU (Brake Actuator Assembly) U0073 o o - U0100 - o - U0124 o o - U0126 - - - Air Conditioning Amplifier Assembly U0100 - - o U0131 - - o U0142 - - o U0155 - - o Navigation Receiver Assembly* U0100 - - - U0129 - o - U0140 - - - U0155 - - - U0164 - - o Radio and Display Receiver Assembly* U0100 - - - U0129 - o - U0140 - - - U0155 - - - U0164 - - o Certification ECU (Smart Key ECU Assembly) (Entry function) U0100 - - - U0142 - - - U0155 - - - Certification ECU (Smart Key ECU Assembly) (Power source switching function) U0100 - - - U0140 - - - U0155 - - - Certification ECU (Smart Key ECU Assembly) (Start function) U0100 - - - Power Steering ECU Assembly U0100 - - - U0129 - o - ECM (for 2ZR-FE) U0129 - o - ECM (for 2ZR-FAE) U0129 - o - Main Body ECU (Multiplex Network Body ECU) U0100 - - - U0101 - - - U0120 - - - U0151 o - - U0155 - - - U0164 - - o U0327 - - - Combination Meter Assembly U0100 - - - U0129 - o - U0131 - - - U0142 - - - U0151 o - - V Bus Steering Sensor - - - - - Trouble Mode (Open in Both CAN Branch Lines) V Bus Output ECU Output DTC Navigation Receiver Assembly Communication Stop Mode Refer to «Navigation Receiver Assembly Communication Stop Mode [08/2013 - ]»(ref-635652-S22668048202014070300000) Radio Receiver Assembly Communication Stop Mode Refer to «Radio Receiver Assembly Communication Stop Mode [08/2013 - ]»(ref-635652-S19578454902014070300000) Certification ECU Communication Stop Mode Refer to «Certification ECU Communication Stop Mode [08/2013 - ]»(ref-635652-S04039999142014070300000) Power Steering ECU Communication Stop Mode Refer to «Power Steering ECU Communication Stop Mode [08/2013 - ]»(ref-635652-S09635089812014070300000) V Bus Airbag Sensor Assembly - - - - - Skid Control ECU (Brake Actuator Assembly) U0073 - - - - U0100 - - - - U0124 - - - - U0126 - - - - Air Conditioning Amplifier Assembly U0100 - - - - U0131 - - - o U0142 - - - - U0155 - - - - Navigation Receiver Assembly* U0100 o - - - U0129 o - - - U0140 o - - - U0155 o - - - U0164 o - - - Radio and Display Receiver Assembly* U0100 - o - - U0129 - o - - U0140 - o - - U0155 - o - - U0164 - o - - Certification ECU (Smart Key ECU Assembly) (Entry function) U0100 - - o - U0142 - - o - U0155 - - o - Certification ECU (Smart Key ECU Assembly) (Power source switching function) U0100 - - o - U0140 - - o - U0155 - - o - Certification ECU (Smart Key ECU Assembly) (Start function) U0100 - - o - Power Steering ECU Assembly U0100 - - - o U0129 - - - o ECM (for 2ZR-FE) U0129 - - - - ECM (for 2ZR-FAE) U0129 - - - - V Bus Main Body ECU (Multiplex Network Body ECU) U0100 - - - - U0101 - - - - U0120 - - o - U0151 - - - - U0155 - - - - U0164 - - - - U0327 - - o - Combination Meter Assembly U0100 - - - - U0129 - - - - U0131 - - - o U0142 - - - - U0151 - - - - Steering Sensor - - - - - - Trouble Mode (Open in Both CAN Branch Lines) V Bus Output ECU Output DTC Main Body ECU Communication Stop Mode Refer to «Main Body ECU Communication Stop Mode [08/2013 - ]»(ref-635652-S35648032042014070300000) Steering Angle Sensor Communication Stop Mode Refer to «Steering Angle Sensor Communication Stop Mode [08/2013 - ]»(ref-635652-S10078873042014070300000) DLC3 V Bus Airbag Sensor Assembly - - - - Skid Control ECU (Brake Actuator Assembly) U0073 - - - U0100 - - - U0124 - - - U0126 - o - Air Conditioning Amplifier Assembly U0100 - - - U0131 - - - U0142 o - - U0155 - - - Navigation Receiver Assembly* U0100 - - - U0129 - - - U0140 o - - U0155 - - - U0164 - - - Radio and Display Receiver Assembly* U0100 - - - U0129 - - - U0140 o - - U0155 - - - U0164 - - - Certification ECU (Smart Key ECU Assembly) (Entry function) U0100 - - - U0142 o - - U0155 - - - Certification ECU (Smart Key ECU Assembly) (Power source switching function) U0100 - - - U0140 o - - U0155 - - - V Bus Certification ECU (Smart Key ECU Assembly) (Start function) U0100 - - - Power Steering ECU Assembly U0100 - - - U0129 - - - ECM (for 2ZR-FE) U0129 - - - ECM (for 2ZR-FAE) U0129 - - - Main Body ECU (Multiplex Network Body ECU) U0100 o - - U0101 o - - U0120 o - - U0151 o - - U0155 o - - U0164 o - - U0327 o - - Combination Meter Assembly U0100 - - - U0129 - - - U0131 - - - U0142 o - - U0151 - - - Steering Sensor - - - - HINT: o: DTC is output. -: DTC is not output. *: DTC U0073 may be stored when communication is lost. - Trouble Mode (Open in One CAN Main Bus Line) V Bus Output ECU Output DTC ECM Communication Stop Mode Refer to «ECM Communication Stop Mode [08/2013 - ]»(ref-635652-S01962750302014070300000) No. 2 CAN Junction Connector to No. 3 CAN Junction Connector Combination Meter ECU Communication Stop Mode Refer to «Combination Meter ECU Communication Stop Mode [08/2013 - ]»(ref-635652-S23062966882014070300000) V Bus Airbag Sensor Assembly - - - - Skid Control ECU (Brake Actuator Assembly) U0073 <-- X <-- U0100 X <-- <-- U0124 <-- X <-- U0126 <-- X <-- Air Conditioning Amplifier Assembly U0100 X X <-- U0131 <-- <-- <-- U0142 <-- <-- <-- U0155 <-- <-- X Navigation Receiver Assembly* U0100 X X <-- U0129 <-- X <-- U0140 <-- <-- <-- U0155 <-- <-- X U0164 <-- <-- <-- V Bus Radio and Display Receiver Assembly* U0100 X X <-- U0129 <-- X <-- U0140 <-- <-- <-- U0155 <-- <-- X U0164 <-- <-- <-- Certification ECU (Smart Key ECU Assembly) (Entry function) U0100 X X <-- U0142 <-- <-- <-- U0155 <-- <-- X Certification ECU (Smart Key ECU Assembly) (Power source switching function) U0100 X X <-- U0140 <-- <-- <-- U0155 <-- <-- X Certification ECU (Smart Key ECU Assembly) (Start function) U0100 X X <-- Power Steering ECU Assembly U0100 X X <-- U0129 <-- X <-- ECM (for 2ZR-FE) U0129 X <-- <-- ECM (for 2ZR-FAE) U0129 X <-- <-- Main Body ECU (Multiplex Network Body ECU) U0100 X X <-- U0101 X X <-- U0120 <-- <-- <-- U0151 <-- <-- <-- U0155 <-- <-- X U0164 <-- <-- <-- U0327 <-- <-- <-- Combination Meter Assembly U0100 X X <-- U0129 <-- X <-- U0131 <-- <-- <-- U0142 <-- <-- X U0151 <-- <-- <-- Steering Sensor - - - - HINT: X: DTC is likely to be output. <--: DTC is unlikely to be output. -: DTC is not output. *: DTC U0073 may be stored when communication is lost. - Trouble Mode (Open in Both CAN Main Bus Lines) V Bus Output ECU Output DTC ECM Communication Stop Mode Refer to «ECM Communication Stop Mode [08/2013 - ]»(ref-635652-S01962750302014070300000) No. 2 CAN Junction Connector to No. 3 CAN Junction Connector Combination Meter ECU Communication Stop Mode Refer to «Combination Meter ECU Communication Stop Mode [08/2013 - ]»(ref-635652-S23062966882014070300000) V Bus Airbag Sensor Assembly - - - - V Bus Skid Control ECU (Brake Actuator Assembly) U0073 - o - U0100 o - - U0124 - o - U0126 - o - Air Conditioning Amplifier Assembly U0100 o o - U0131 - - - U0142 - - - U0155 - - o Navigation Receiver Assembly* U0100 o o - U0129 - o - U0140 - - - U0155 - - o U0164 - - - Radio and Display Receiver Assembly* U0100 o o - U0129 - o - U0140 - - - U0155 - - o U0164 - - - Certification ECU (Smart Key ECU Assembly) (Entry function) U0100 o o - U0142 - - - U0155 - - o Certification ECU (Smart Key ECU Assembly) (Power source switching function) U0100 o o - U0140 - - - U0155 - - o Certification ECU (Smart Key ECU Assembly) (Start function) U0100 o o - Power Steering ECU Assembly U0100 o o - U0129 - o - ECM (for 2ZR-FE) U0129 o - - ECM (for 2ZR-FAE) U0129 o - - Main Body ECU (Multiplex Network Body ECU) U0100 o o - U0101 o o - U0120 - - - U0151 - - - U0155 - - o U0164 - - - U0327 - - - Combination Meter Assembly U0100 o o o U0129 - - o U0131 - - o U0142 - - o U0151 - - o Steering Sensor - - - - HINT: o: DTC is output. -: DTC is not output. *: DTC U0073 may be stored when communication is lost. - Trouble Mode (CAN Bus Lines Short Circuit or Short to GND) V Bus Output ECU Output DTC CANH to CANL CANH to Ground Short CANL to Ground Short V Bus Airbag Sensor Assembly - - - - Skid Control ECU (Brake Actuator Assembly) U0073 o o o U0100 o o o U0124 o o o U0126 o o o Air Conditioning Amplifier Assembly U0100 o o o U0131 o o o U0142 o o o U0155 o o o Navigation Receiver Assembly* U0100 o o o U0129 o o o U0140 o o o U0155 o o o U0164 o o o Radio and Display Receiver Assembly* U0100 o o o U0129 o o o U0140 o o o U0155 o o o U0164 o o o Certification ECU (Smart Key ECU Assembly) (Entry function) U0100 o o o U0142 o o o U0155 o o o Certification ECU (Smart Key ECU Assembly) (Power source switching function) U0100 o o o U0140 o o o U0155 o o o Certification ECU (Smart Key ECU Assembly) (Start function) U0100 o o o Power Steering ECU Assembly U0100 o o o U0129 o o o ECM (for 2ZR-FE) U0129 o o o ECM (for 2ZR-FAE) U0129 o o o Main Body ECU (Multiplex Network Body ECU) U0100 o o o U0101 o o o U0120 o o o U0151 o o o U0155 o o o U0164 o o o U0327 o o o V Bus Combination Meter Assembly U0100 o o o U0129 o o o U0131 o o o U0142 o o o U0151 o o o Steering Sensor - - - - HINT: o: DTC is output. -: DTC is not output. *: DTC U0073 may be stored when communication is lost.
8. CAN BUS WAVEFORMS HINT: This waveform is measured between terminals CANH and GND, and terminals CANL and GND of the DLC3. (Use this as a reference for diagnosis of CAN communication lines.) When malfunctions in multiple ECUs are suspected based on the CAN bus check and DTCs checked using the Techstream, check the resistance of the CAN bus using an ohmmeter first. If no problems are found, check the following waveforms. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [08/2013 - ]»(ref-635647-S27781195552014070300000) If a waveform is not similar to one of the following 3 patterns (Group 1), then an open in a CAN main bus line, an open in a CAN branch line, or a short between a CAN line (CANH or CANL) and ground is suspected (Group 2). Wiggle the connector and wire harness to check if the waveform changes. CAN bus waveforms (Group 1) Normal waveform Open in both of the lines (CANH and CANL) of a CAN branch HINT: Waveforms (waveforms shown using dotted lines) are not present from an ECU or sensor connected to a CAN branch with an open circuit in both lines. (Waveforms from other ECUs or sensors are normal.) Because this waveform is similar to a normal waveform, instead of using the waveform, the malfunctioning part can be narrowed down by performing a CAN bus check. Short between the CAN bus lines (CANH and CANL) HINT: Waveforms disappear. If the malfunction is in an ECU, disconnecting the ECU will change the waveform. If the waveform does not change, a malfunction in the wire harness is suspected. CAN bus waveforms (reference) (Group 2) NOTE: The following CAN bus waveforms can be used only as reference. The actual measured waveform may differ significantly depending on the location of the open or short circuit. Open in a CAN branch line (CANH) HINT: An abnormal waveform is output from an ECU with an open in one of its CAN branch lines. Because this abnormal output interferes with the signals from other ECUs, the output of other ECUs will also appear abnormal. Narrow down the malfunctioning part by checking DTCs or performing a CAN bus check, or by checking waveform changes when ECUs or sensors are disconnected. The waveform will change to one for an open in both sides of a CAN branch when the ECU or sensor with an open CAN branch line is disconnected. Open in a CAN branch line (CANL) HINT: An abnormal waveform is output from an ECU with an open in one of its CAN branch lines. Because this abnormal output interferes with the signals from other ECUs, the output of other ECUs will also appear abnormal. Narrow down the malfunctioning part by checking DTCs or performing a CAN bus check, or by checking waveform changes when ECUs or sensors are disconnected. The waveform will change to one for an open in both sides of a CAN branch when the ECU or sensor with an open CAN branch line is disconnected. Open in a CAN main bus line (CANH) HINT: Waveforms of ECUs or sensors that are closer to the DLC3 than the open part are almost normal. Waveforms of ECUs or sensors that are on the opposite side of the DLC3 from the open part are abnormal. An open in a CAN main bus line can be confirmed by measuring the resistance between the CANH and CANL terminals of any CAN branch. Short between a CAN bus line (CANH) and ground HINT: Narrow down the shorted part by checking for waveform changes when disconnecting connectors from the CAN junction connectors or when disconnecting ECUs or sensors. A short to ground in the CANH line can be confirmed by measuring the resistance between CANH and ground using an ohmmeter. Short between a CAN bus line (CANL) and ground HINT: Narrow down the shorted part by checking for waveform changes when disconnecting connectors from the CAN junction connectors or when disconnecting ECUs or sensors. A short to ground in the CANL line can be confirmed by measuring the resistance between CANL and ground using an ohmmeter.
9. DATA SENDING/RECEIVING TABLE Data sending/receiving table HINT: If Data List items related to sent/received data are not displayed properly, the part for which communication is interrupted can be determined using the table below. Data content Data Detected and Sent by Data Received by (Can be Checked in Data List) Data Received by (Cannot be Checked in Data List) Relevant Data List Item [Selected System] Accelerator position ECM Skid control ECU (brake actuator assembly) - Accelerator Position [Engine and ECT] Accelerator Opening Angle % [ABS/VSC/TRAC] Engine speed ECM Skid control ECU (brake actuator assembly) Power steering ECU assembly Certification ECU (smart key ECU assembly) Combination meter assembly Air conditioning amplifier assembly Airbag sensor assembly Navigation receiver assembly Radio and display receiver assembly Main body ECU (multiplex network body ECU) Engine Speed [Engine and ECT] Engine Revolutions [ABS/VSC/TRAC] Engine Revolution [EMPS] Engine Condition [Power Source Control] Engine RPM [Combination Meter] Engine coolant temperature ECM Air conditioning amplifier assembly Combination meter assembly Certification ECU (smart key ECU assembly) Coolant Temp [Engine and ECT] Engine Coolant Temp [Air Conditioner] Coolant Temperature [Combination Meter] Vehicle speed Skid control ECU (brake actuator assembly) ECM Power steering ECU assembly Combination meter assembly*3 Navigation receiver assembly Radio and display receiver assembly Airbag sensor assembly Vehicle Speed [Engine and ECT] Vehicle Speed [ABS/VSC/TRAC] Meter Vehicle Velocity [EMPS] Vehicle Speed Meter [Combination Meter] Vehicle Speed [Navigation System] Combination meter assembly*3 Certification ECU (smart key ECU assembly) Air conditioning amplifier assembly Main body ECU (multiplex network body ECU) Vehicle Speed Meter [Combination Meter] Vehicle Speed Signal [Power Source Control] Wheel speed Skid control ECU (brake actuator assembly) - ECM Power steering ECU assembly Airbag sensor assembly FR Wheel Speed [ABS/VSC/TRAC] FL Wheel Speed [ABS/VSC/TRAC] RR Wheel Speed [ABS/VSC/TRAC] RL Wheel Speed [ABS/VSC/TRAC] Shift position ECM Navigation receiver assembly Radio and display receiver assembly Certification ECU (smart key ECU assembly) Combination meter assembly*2 Airbag sensor assembly Main body ECU (multiplex network body ECU) Neutral Position SW Signal [Engine and ECT] Reverse Signal [Navigation System] Shift P Signal [Power Source Control] Ambient temperature Air conditioning amplifier assembly ECM Main body ECU (multiplex network body ECU) Navigation receiver assembly Radio and display receiver assembly Ambient Temp for A/C [Engine and ECT] Ambient Temp Sensor [Air Conditioner] Driver door courtesy switch Main body ECU (multiplex network body ECU) - Certification ECU (smart key ECU assembly) Combination meter assembly*2 FL Door Courtesy SW [Main Body] Steering angle sensor Steering sensor Skid control ECU (brake actuator assembly) Power steering ECU assembly Airbag sensor assembly Steering Angle Sensor [ABS/VSC/TRAC] Steering Angle Sens Sig [EMPS] Yaw rate sensor Airbag sensor assembly Skid control ECU (brake actuator assembly) Power steering ECU assembly Yaw Rate Sensor [ABS/VSC/TRAC] Deceleration sensor Airbag sensor assembly Skid control ECU (brake actuator assembly) ECM Power steering ECU assembly Deceleration Sensor [ABS/VSC/TRAC] Deceleration Sensor2 [ABS/VSC/TRAC] Lateral G [ABS/VSC/TRAC] Forward and Rearward G [ABS/VSC/TRAC] ECM power source voltage*1 ECM - - Battery Voltage [Engine and ECT] Combination meter assembly power source voltage*1 Combination meter assembly - - +B Voltage Value [Combination Meter] Skid control ECU (brake actuator assembly) power source voltage*1 Skid control ECU (brake actuator assembly) - - IG1 Voltage Value [ABS/VSC/TRAC] Power steering ECU assembly power source voltage*1 Power steering ECU assembly - - IG Power Supply [EMPS] Navigation receiver assembly power source voltage*1 Navigation receiver assembly - - Battery Voltage [Navigation System] Radio and display receiver assembly power source voltage*1 Radio and display receiver assembly - - Battery Voltage [Navigation System] Solar sensor*1*4 Air conditioning amplifier assembly - - Solar Sensor (D side) [Air Conditioner] Driver door touch sensor*1 Certification ECU (smart key ECU assembly) - - D-Door Touch Sensor [Smart Key] *1: Whether the ECU that sends data is functioning or not can be judged by using the Techstream to check items such as switches or sensors that send signals to the ECU via direct lines. *2: Although the received contents cannot be checked in the Data List, whether or not the data is received normally can be checked by observing the combination meter assembly. *3: The combination meter assembly receives a vehicle speed signal from the skid control ECU (brake actuator assembly) and sends the signal to other ECUs. *4: w/ Automatic air Conditioning System Details of relevant Data List items (Selected system: Engine and ECT) (for 2ZR-FE) HINT: Using the Techstream to read the Data List allows the values or states of switches, sensors, actuators and other items to be read without removing any parts. This non-intrusive inspection can be very useful because intermittent conditions or signals may be discovered before parts or wiring is disturbed. Reading the Data List information early in troubleshooting is one way to save diagnostic time. NOTE: In the table below, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether a part is faulty or not. HINT: Normal Condition: If no conditions are specifically stated for "idling", the shift lever should be in N (neutral) or P, the A/C switch should be off and all accessory switches should be off. Warm up the engine. Turn the A/C switch off. Turn the ignition switch off. Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List. According to the display on the Techstream, read the "Data List". Powertrain > Engine and ECT > Data List Tester Display Measurement Item Range Normal Condition Diagnostic Note Vehicle Speed Vehicle speed Min.: 0 km/h (0 mph), Max.: 255 km/h (158 mph) Actual vehicle speed This is the current vehicle speed. The vehicle speed is detected using the wheel speed sensors. Vehicle speed data is delayed when it is displayed. Therefore, even if the vehicle speed listed in the freeze frame data is 0 km/h (0 mph), this does not always mean that the malfunction occurred when the vehicle was stopped. Engine Speed Engine speed Min.: 0 RPM, Max.: 16383 RPM 700 to 800 RPM: Idling (for CVT, A/T models) 600 to 700 RPM: Idling (for M/T models) When the crankshaft position sensor is malfunctioning, "Engine Speed" is approximately 0 RPM or varies greatly from the actual engine speed. Coolant Temp Coolant temperature Min.: -40°C (-40°F), Max.: 140°C (284°F) 75 to 100°C (167 to 212°F): After warming up This is the engine coolant temperature. HINT: After warming up the engine, the engine coolant temperature is 75 to 100°C (167 to 212°F). After a long soak, the engine coolant temperature, intake air temperature and ambient air temperature are approximately equal. If the value is -40°C (-40°F), or higher than 135°C (275°F), the sensor circuit is open or shorted. Check if the engine overheats when the value indicates higher than 135°C (275°F). Battery Voltage Battery voltage Min.: 0 V, Max.: 65.535 V 11 to 14 V: Idling If 11 V or less, characteristics of some electrical components may change. Accelerator Position Accelerator pedal position Min.: 0%, Max.: 399.9% Actual accelerator pedal position This is the accelerator pedal position defined using the learned fully released position (sensor output) of accelerator pedal position sensor No. 1 as 0% and the fully depressed position as 100%. Neutral Position SW Signal Neutral Position SW Signal ON or OFF ON: Shift lever in P or N (neutral) - Ambient Temp for A/C Ambient temperature for A/C Min.: -40°C (-40°F), Max.: 215°C (419°F) - - Details of relevant Data List items (Selected system: Engine and ECT) (for 2ZR-FAE) HINT: Using the Techstream to read the Data List allows the values or states of switches, sensors, actuators and other items to be read without removing any parts. This non-intrusive inspection can be very useful because intermittent conditions or signals may be discovered before parts or wiring is disturbed. Reading the Data List information early in troubleshooting is one way to save diagnostic time. NOTE: In the table below, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether a part is faulty or not. HINT: Normal Condition: If no conditions are specifically stated for "idling", the shift lever should be in N or P, the A/C switch should be off and all accessory switches should be off. Warm up the engine. Turn the A/C switch off. Turn the ignition switch off. Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List. According to the display on the Techstream, read the "Data List". Powertrain > Engine and ECT > Data List Tester Display Measurement Item Range Normal Condition Diagnostic Note Vehicle Speed Vehicle speed Min.: 0 km/h (0 mph), Max.: 255 km/h (158 mph) Actual vehicle speed This is the current vehicle speed. The vehicle speed is detected using the wheel speed sensors. Vehicle speed data is delayed when it is displayed. Therefore, even if the vehicle speed listed in the freeze frame data is 0 km/h (0 mph), this does not always mean that the malfunction occurred when the vehicle was stopped. Engine Speed Engine speed Min.: 0 RPM, Max.: 16383 RPM 700 to 800 RPM: Idling When the crankshaft position sensor is malfunctioning, "Engine Speed" is approximately 0 RPM or varies greatly from the actual engine speed. Coolant Temp Coolant temperature Min.: -40°C (-40°F), Max.: 140°C (284°F) 75 to 100°C (167 to 212°F): After warming up This is the engine coolant temperature. HINT: After warming up the engine, the engine coolant temperature is 75 to 100°C (167 to 212°F). After a long soak, the engine coolant temperature, intake air temperature, engine oil temperature and ambient air temperature are approximately equal. If the value is -40°C (-40°F), or higher than 135°C (275°F), the sensor circuit is open or shorted. Check if the engine overheats when the value indicates higher than 135°C (275°F). Battery Voltage Battery voltage Min.: 0 V, Max.: 65.535 V 11 to 14 V: Idling If 11 V or less, characteristics of some electrical components may change. Accelerator Position Accelerator pedal position Min.: 0%, Max.: 399.9% Actual accelerator pedal position This is the accelerator pedal position defined using the learned fully released position (sensor output) of accelerator pedal position sensor No. 1 as 0% and the fully depressed position as 100%. Neutral Position SW Signal Park/Neutral position switch ON or OFF ON: Shift lever in P or N - Ambient Temp for A/C Ambient temperature for A/C Min.: -40°C (-40°F), Max.: 215°C (419°F) - - Details of relevant Data List items (Selected system: ABS/VSC/TRAC) HINT: Using the Techstream to read the Data List allows the values or states of switches, sensors, actuators and other items to be read without removing any parts. This non-intrusive inspection can be very useful because intermittent conditions or signals may be discovered before parts or wiring is disturbed. Reading the Data List information early in troubleshooting is one way to save diagnostic time. NOTE: In the table below, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether a part is faulty or not. Warm up the engine. Turn the ignition switch off. Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Chassis / ABS/VSC/TRAC / Data List. According to the display on the Techstream, read the "Data List". Chassis > ABS/VSC/TRAC > Data List Tester Display Measurement Item Range Normal Condition Diagnostic Note Deceleration Sensor Acceleration sensor reading Min.: -18.525 m/s 2 , Max.: 18.387 m/s 2 - During deceleration/acceleration: Changes continuously Deceleration Sensor2 Acceleration sensor 2 reading Min.: -18.525 m/s 2 , Max.: 18.387 m/s 2 - During deceleration/acceleration: Changes continuously Yaw Rate Sensor Yaw rate sensor Min.: -128°/s Max.: 127°/s Vehicle stopped: 0°/s Turning right: -128 to 0°/s Turning left: 0 to 127°/s - Steering Angle Sensor Steering angle sensor Min.: -3276.8°, Max.: 3276.7° Turning left: Increases Turning right: Decreases - Lateral G Lateral G Min.: -25.10 m/s 2 , Max.: 24.90 m/s 2 - During turning: Changes in proportion with acceleration Forward and Rearward G Forward and backward G Min.: -25.10 m/s 2 , Max.: 24.90 m/s 2 - During acceleration/deceleration: Changes in proportion with acceleration FR Wheel Speed Front wheel speed sensor RH reading Min.: 0 km/h (0 mph), Max.: 326 km/h (202 mph) Vehicle stopped: 0 km/h (0 mph) When driving at constant speed: No large fluctuations FL Wheel Speed Front wheel speed sensor LH reading Min.: 0 km/h (0 mph), Max.: 326 km/h (202 mph) Vehicle stopped: 0 km/h (0 mph) When driving at constant speed: No large fluctuations RR Wheel Speed Rear wheel speed sensor RH reading Min.: 0 km/h (0 mph), Max.: 326 km/h (202 mph) Vehicle stopped: 0 km/h (0 mph) When driving at constant speed: No large fluctuations RL Wheel Speed Rear wheel speed sensor LH reading Min.: 0 km/h (0 mph), Max.: 326 km/h (202 mph) Vehicle stopped: 0 km/h (0 mph) When driving at constant speed: No large fluctuations Vehicle Speed Maximum wheel speed sensor reading Min.: 0 km/h (0 mph), Max.: 326 km/h (202 mph) Vehicle stopped: 0 km/h (0 mph) When driving at constant speed: No large fluctuations Engine Revolutions Engine speed Min.: 0 RPM, Max.: 65535 RPM Engine stopped: 0 RPM When engine speed is constant: No large fluctuations Accelerator Opening Angle % Percentage of accelerator pedal opening angle Min.: 0.0%, Max.: 128.0% Accelerator pedal released: 0.0% During accelerator pedal operation: Changes in proportion with the pedal movement IG1 Voltage Value IG1 Voltage Value Min.: 0.00 V, Max.: 20.00 V Ignition switch ON: 11.00 to 14.00 V Changes in proportion to battery voltage Details of relevant Data List items (Selected system: EMPS) HINT: Using the Techstream to read the Data List allows the values or states of switches, sensors, actuators and other items to be read without removing any parts. This non-intrusive inspection can be very useful because intermittent conditions or signals may be discovered before parts or wiring is disturbed. Reading the Data List information early in troubleshooting is one way to save diagnostic time. NOTE: In the table below, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether a part is faulty or not. Turn the ignition switch off. Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Chassis / EMPS / Data List. According to the display on the Techstream, read the "Data List". Chassis > EMPS > Data List Tester Display Measurement Item Range Normal Condition Diagnostic Note Meter Vehicle Velocity Vehicle speed from speedometer Min.: 0.0 km/h (0.0 MPH) Max.: 300.0 km/h (186.4 MPH) 0 km/h (0 MPH): Engine running and vehicle stopped No significant fluctuation: Engine running and vehicle driven at constant speed - Engine Revolution Engine speed Min.: 0 RPM Max.: 12800 RPM No significant fluctuation Engine running at a constant speed IG Power Supply IG power source voltage Min.: 0.0000 V Max.: 20.1531 V 8 to 16 V Ignition switch ON Steering Angle Sens Sig Steering angle sensor signal state OK or NG(1) or NG(2) or NG(3) OK: Steering angle sensor signal received NG(1): The learning has not completed NG(2): Steering angle sensor abnormal NG(3): Communication Error - Details of relevant Data List items (Selected system: Combination Meter) HINT: Using the Techstream to read the Data List allows the values or states of switches, sensors, actuators and other items to be read without removing any parts. This non-intrusive inspection can be very useful because intermittent conditions or signals may be discovered before parts or wiring is disturbed. Reading the Data List information early in troubleshooting is one way to save diagnostic time. NOTE: In the table below, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether a part is faulty or not. Warm up the engine. Turn the ignition switch off. Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Body Electrical / Combination Meter / Data List. According to the display on the Techstream, read the "Data List". Body Electrical > Combination Meter > Data List Tester Display Measurement Item Range Normal Condition Diagnostic Note Vehicle Speed Meter Vehicle speed Min.: 0 km/h (0 mph), Max.: 255 km/h (158 mph) Almost the same as actual vehicle speed - Engine RPM Engine speed Min.: 0 RPM, Max.: 12750 RPM for 2ZR-FAE: 700 to 800 RPM: Idling for 2ZR-FE: 700 to 800 RPM: Idling (for CVT and A/T models) 600 to 700 RPM: Idling (for M/T models) - Coolant Temperature Engine coolant temperature Min.: 0°C (32°F), Max.: 127.5°C (261.5°F) 75 to 100 °C (167 to 212°F) (After warming up engine) - +B Voltage Value Battery voltage Min.: 0 V, Max.: 25.5 V 11 to 14 V - Details of relevant Data List items (Selected system: Power Source Control) HINT: Using the Techstream to read the Data List allows the values or states of switches, sensors, actuators and other items to be read without removing any parts. This non-intrusive inspection can be very useful because intermittent conditions or signals may be discovered before parts or wiring is disturbed. Reading the Data List information early in troubleshooting is one way to save diagnostic time. NOTE: In the table below, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether a part is faulty or not. Turn the ignition switch off. Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Body Electrical / Power Source Control / Data List. According to the display on the Techstream, read the "Data List". Body Electrical > Power Source Control > Data List Tester Display Measurement Item Normal Condition Reference Value Diagnostic Note Shift P Signal Shift position P* ON or OFF ON: Shift lever in P OFF: Shift lever not in P Use this item to determine if the shift position switch is malfunctioning. The engine cannot be started when this item is OFF. Engine Condition Engine state Stop or Run Stop: Engine stopped Run: Engine running - Vehicle Speed Signal Vehicle being driven or stopped Stop or Run Stop: Vehicle stopped Run: Vehicle being driven at 5 km/h (3 mph) or more - *: except Manual Transaxle Details of relevant Data List items (Selected system: Air Conditioner) HINT: Using the Techstream to read the Data List allows the values or states of switches, sensors, actuators and other items to be read without removing any parts. This non-intrusive inspection can be very useful because intermittent conditions or signals may be discovered before parts or wiring is disturbed. Reading the Data List information early in troubleshooting is one way to save diagnostic time. NOTE: In the table below, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether a part is faulty or not. Turn the ignition switch off. Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Body Electrical / Air Conditioner / Data List. According to the display on the Techstream, read the "Data List". Body Electrical > Air Conditioner > Data List Tester Display Measurement Item Range Normal Condition Diagnostic Note Ambient Temp Sensor Thermistor assembly Min.: -23.30°C (-9.94°F) Max.: 65.95°C (150.71°F) Actual ambient temperature displayed - Solar Sensor (D Side) Cooler (solar sensor) thermistor Min.: 0 Max.: 255 Cooler (solar sensor) thermistor value increases as brightness increases * Engine Coolant Temp Engine coolant temperature sensor Min.: 1.30°C (34.34°F) Max.: 90.55°C (194.99°F) Actual engine coolant temperature displayed - *: w/ Automatic Air Conditioning System Details of relevant Data List items (Selected system: Navigation System) HINT: Using the Techstream to read the Data List allows the values or states of switches, sensors, actuators and other items to be read without removing any parts. This non-intrusive inspection can be very useful because intermittent conditions or signals may be discovered before parts or wiring is disturbed. Reading the Data List information early in troubleshooting is one way to save diagnostic time. NOTE: In the table below, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether a part is faulty or not. Turn the ignition switch off. Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Body Electrical / Navigation System / Data List. According to the display on the Techstream, read the "Data List". Body Electrical > Navigation System > Data List Tester Display Measurement Item Range Normal Condition Diagnostic Note Battery Voltage Battery voltage Min.: 0 V, Max.: 24 V 11 to 14 V - Reverse Signal Reverse signal ON or OFF ON: Shift lever in R OFF: Shift lever in any position other than R - Vehicle Speed Maximum wheel speed sensor reading Min.: 0 km/h (0 mph), Max.: 255 km/h (158 mph) Vehicle stopped: 0 km/h (0 mph) When driving at constant speed: No large fluctuations Details of relevant Data List items (Selected system: Main Body) HINT: Using the Techstream to read the Data List allows the values or states of switches, sensors, actuators and other items to be read without removing any parts. This non-intrusive inspection can be very useful because intermittent conditions or signals may be discovered before parts or wiring is disturbed. Reading the Data List information early in troubleshooting is one way to save diagnostic time. NOTE: In the table below, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether a part is faulty or not. Turn the ignition switch off. Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Body Electrical / Main Body / Data List. According to the display on the Techstream, read the "Data List". Body Electrical > Main Body > Data List Tester Display Measurement Item Range Normal Condition Diagnostic Note FL Door Courtesy SW Front door courtesy light switch assembly (LH) signal ON or OFF ON: Front door LH open OFF: Front door LH closed - Details of relevant Data List items (Selected system: Smart Key) NOTE: In the table below, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether a part is faulty or not. HINT: Using the Techstream to read the Data List allows the values or states of switches, sensors, actuators and other items to be read without removing any parts. This non-intrusive inspection can be very useful because intermittent conditions or signals may be discovered before parts or wiring is disturbed. Reading the Data List information early in troubleshooting is one way to save diagnostic time. When using the Techstream with the ignition switch off to troubleshoot: Connect the Techstream to the DLC3 and turn a courtesy light switch on and off at 1.5-second intervals until communication between the Techstream and vehicle begins. Turn the ignition switch off. Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Body Electrical / Smart Key / Data List. According to the display on the Techstream, read the "Data List". Body Electrical > Smart Key > Data List Tester Display Measurement Item Range Normal Condition Diagnostic Note D-Door Touch Sensor Driver door touch sensor (unlock sensor)* OFF or ON OFF: Driver door touch sensor (unlock sensor) not touched ON: Driver door touch sensor (unlock sensor) touched Displays whether the unlock sensor is on or off (even if the sensor is touched and contact is maintained, "ON" is displayed only momentarily). Use this Data List item to help determine if there is an unlock sensor malfunction when the entry unlock function does not operate. *: Data from an actual vehicle provided for reference.