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

HOW TO PROCEED WITH TROUBLESHOOTING

HINT

1. Use the following procedure to troubleshoot the LIN communication system.

1. *: Use the Techstream.

1. VEHICLE BROUGHT TO WORKSHOP NEXT: Go to next step
2. CUSTOMER PROBLEM ANALYSIS In 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. Gather as much information as possible for reference. Past problems that seem unrelated may also help in some cases. The following 5 items are important points in problem analysis: What Vehicle model, system name When Date, time, occurrence frequency Where Road conditions Under what conditions? Driving conditions, weather conditions How did it happen? Problem symptoms NEXT: Go to next step
3. INSPECT BATTERY VOLTAGE Measure the battery voltage. Standard Voltage 11 to 14 V If the voltage is below 11 V, recharge or replace the battery before proceeding to the next step. NEXT: Go to next step
4. CHECK COMMUNICATION FUNCTION OF LIN COMMUNICATION SYSTEM* Using the Techstream, inspect the LIN communication function to ensure there are no malfunctions in the communication system. Refer to «DTC CHECK / CLEAR»(ref-400663-S34147950852011051800000) . Result Result Proceed to DTC is not output A DTC is output B B --> GO TO DIAGNOSTIC TROUBLE CODE CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-400663-S25596778512011051800000) A: Go to next step
5. PROBLEM SYMPTOMS TABLE Refer to Problem Symptoms Table. Refer to «PROBLEM SYMPTOMS TABLE»(ref-400663-S35623417102011051800000) . Result Result Proceed to Fault is not listed in Problem Symptoms Table A Fault is listed in Problem Symptoms Table B B --> GO TO 7 STEP 7 A: Go to next step
6. OVERALL ANALYSIS AND TROUBLESHOOTING* Terminals of ECU. Refer to «TERMINALS OF ECU»(ref-400663-S41901473102011051800000) Data List / Active Test. Refer to «DATA LIST / ACTIVE TEST»(ref-400663-S15915276572011051800000) NEXT: Go to next step
7. REPAIR OR REPLACE NEXT: Go to next step
8. CONFIRMATION TEST NEXT --> END

HINT

1. Use the following procedure to troubleshoot the LIN communication system.

1. *: Use the Techstream.

1. VEHICLE BROUGHT TO WORKSHOP NEXT: Go to next step
2. CUSTOMER PROBLEM ANALYSIS In 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. Gather as much information as possible for reference. Past problems that seem unrelated may also help in some cases. The following 5 items are important points in problem analysis: What Vehicle model, system name When Date, time, occurrence frequency Where Road conditions Under what conditions? Driving conditions, weather conditions How did it happen? Problem symptoms NEXT: Go to next step
3. INSPECT BATTERY VOLTAGE Measure the battery voltage. Standard Voltage 11 to 14 V If the voltage is below 11 V, recharge or replace the battery before proceeding to the next step. NEXT: Go to next step
4. CHECK COMMUNICATION FUNCTION OF LIN COMMUNICATION SYSTEM* Using the Techstream, inspect the LIN communication function to ensure there are no malfunctions in the communication system. Refer to «DTC CHECK / CLEAR»(ref-400663-S31740872432011051800000) . Result Result Proceed to DTC is not output A DTC is output B B --> GO TO DIAGNOSTIC TROUBLE CODE CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-400663-S04734094882011051800000) A: Go to next step
5. PROBLEM SYMPTOMS TABLE Refer to Problem Symptoms Table. Refer to «PROBLEM SYMPTOMS TABLE»(ref-400663-S04762284382011051800000) . Result Result Proceed to Fault is not listed in Problem Symptoms Table A Fault is listed in Problem Symptoms Table B B --> GO TO 7 STEP 7 A: Go to next step
6. OVERALL ANALYSIS AND TROUBLESHOOTING* Terminals of ECU. Refer to «TERMINALS OF ECU»(ref-400663-S41901473102011051800000) Data List / Active Test. Refer to «DATA LIST / ACTIVE TEST»(ref-400663-S15915276572011051800000) NEXT: Go to next step
7. REPAIR OR REPLACE NEXT: Go to next step
8. CONFIRMATION TEST NEXT --> END

PROBLEM SYMPTOMS TABLE

HINT

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

LIN COMMUNICATION SYSTEM

HINT

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

LIN COMMUNICATION SYSTEM

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1. CHECK MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) Disconnect the 2D, 2F and 2K instrument panel junction block assembly connectors. Measure the voltage and resistance according to the value(s) in the table below. HINT: Measure the values on the wire harness side with the connectors disconnected. Tester Connection Wiring Color Terminal Description Condition Specified Condition 2F-40 (BECU) - Body ground G - Body ground Battery power supply Always 11 to 14 V 2K-1 (ACC) - Body ground W - Body ground ACC power supply Always 11 to 14 V 2D-6 (GND1) - Body ground BR - Body ground Ground Always Below 1 ohms If the result is not as specified, there may be a malfunction in the wire harness. Reconnect the 2D, 2F and 2K instrument panel junction block assembly connectors. Check for pulses according to the value(s) in the table below. Tester Connection Wiring Color Terminal Description Condition Specified Condition 2H-25 (LIN2) - 2D-6 (GND1) W - BR LIN communication line Engine switch on (IG) Pulse generation 2D-27 (LIN2) - 2D-6 (GND1) W - BR LIN communication line Engine switch on (IG) Pulse generation If the result is not as specified, the main body ECU (multiplex network body ECU) may be malfunctioning.
2. CHECK FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY LH Disconnect the J1 front power window regulator motor assembly LH connector. Measure the voltage and resistance according to the value(s) in the table below. HINT: Measure the values on the wire harness side with the connector disconnected. Tester Connection Wiring Color Terminal Description Condition Specified Condition J1-2 (B) - J1-1 (E) Y - W-B Battery power supply Always 11 to 14 V J1-1 (E) - Body ground W-B - Body ground Ground Always Below 1 ohms If the result is not as specified, there may be a malfunction in the wire harness. Reconnect the J1 front power window regulator motor assembly LH connector. Check for pulses according to the value(s) in the table below. Tester Connection Wiring Color Terminal Description Condition Specified Condition J1-9 (LIN) - J1-1 (E) V - W-B LIN communication line Engine switch on (IG) Pulse generation If the result is not as specified, the front power window regulator motor assembly LH may be malfunctioning.
3. CHECK FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY RH Disconnect the I2 front power window regulator motor assembly RH connector. Measure the voltage and resistance according to the value(s) in the table below. HINT: Measure the values on the wire harness side with the connector disconnected. Tester Connection Wiring Color Terminal Description Condition Specified Condition I2-2 (B) - I2-1 (E) G - W-B Battery power supply Always 11 to 14 V I2-1 (E) - Body ground W-B - Body ground Ground Always Below 1 ohms If the result is not as specified, there may be a malfunction in the wire harness. Reconnect the I2 front power window regulator motor assembly RH connector. Check for pulses according to the value(s) in the table below. Tester Connection Wiring Color Terminal Description Condition Specified Condition I2-9 (LIN) - I2-1 (E) V - W-B LIN communication line Engine switch on (IG) Pulse generation If the result is not as specified, the front power window regulator motor assembly RH may be malfunctioning.
4. CHECK REAR POWER WINDOW REGULATOR MOTOR ASSEMBLY RH Disconnect the K2 rear power window regulator motor assembly RH connector. Measure the voltage and resistance according to the value(s) in the table below. HINT: Measure the values on the wire harness side with the connector disconnected. Tester Connection Wiring Color Terminal Description Condition Specified Condition K2-2 (B) - K2-1 (E) LG - W-B Battery power supply Always 11 to 14 V K2-1 (E) - Body ground W-B - Body ground Ground Always Below 1 ohms If the result is not as specified, there may be a malfunction in the wire harness. Reconnect the K2 rear power window regulator motor assembly RH connector. Check for pulses according to the value(s) in the table below. Tester Connection Wiring Color Terminal Description Condition Specified Condition K2-9 (LIN) - K2-1 (E) GR - W-B LIN communication line Engine switch on (IG) Pulse generation If the result is not as specified, the rear power window regulator motor assembly RH may be malfunctioning.
5. CHECK REAR POWER WINDOW REGULATOR MOTOR ASSEMBLY LH Disconnect the L2 rear power window regulator motor assembly LH connector. Measure the voltage and resistance according to the value(s) in the table below. HINT: Measure the values on the wire harness side with the connector disconnected. Tester Connection Wiring Color Terminal Description Condition Specified Condition L2-2 (B) - L2-1 (E) B - W-B Battery power supply Always 11 to 14 V L2-1 (E) - Body ground W-B - Body ground Ground Always Below 1 ohms If the result is not as specified, there may be a malfunction in the wire harness. Reconnect the L2 rear power window regulator motor assembly LH connector. Check for pulses according to the value(s) in the table below. Tester Connection Wiring Color Terminal Description Condition Specified Condition L2-9 (LIN) - L2-1 (E) P - W-B LIN communication line Engine switch on (IG) Pulse generation If the result is not as specified, the rear power window regulator motor assembly LH may be malfunctioning.
6. CHECK MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY Disconnect the J7 multiplex network master switch assembly connector. Measure the voltage and resistance according to the value(s) in the table below. HINT: Measure the values on the wire harness side with the connector disconnected. Tester Connection Wiring Color Terminal Description Condition Specified Condition J7-11 (B) - J7-12 (E) L - W-B Battery power supply Always 11 to 14 V J7-12 (E) - Body ground W-B - Body ground Ground Always Below 1 ohms If the result is not as specified, there may be a malfunction in the wire harness. Reconnect the J7 multiplex network master switch assembly connector. Check for pulses according to the value(s) in the table below. Tester Connection Wiring Color Terminal Description Condition Specified Condition J7-17 (LIN1) - J7-12 (E) V - W-B LIN communication line Engine switch on (IG) Pulse generation If the result is not as specified, the multiplex network master switch assembly may be malfunctioning.
7. CHECK SLIDING ROOF ECU (SLIDING ROOF DRIVE GEAR ASSEMBLY) Disconnect the T2 sliding roof ECU (sliding roof drive gear assembly) connector. Measure the voltage and resistance according to the value(s) in the table below. HINT: Measure the values on the wire harness side with the connector disconnected. Tester Connection Wiring Color Terminal Description Condition Specified Condition T2-1 (B) - T2-2 (E) P - W-B Battery power supply Always 11 to 14 V T2-2 (E) - Body ground W-B - Body ground Ground Always Below 1 ohms If the result is not as specified, there may be a malfunction in the wire harness. Reconnect the T2 sliding roof ECU (sliding roof drive gear assembly) connector. Check for pulses according to the value(s) in the table below. Tester Connection Wiring Color Terminal Description Condition Specified Condition T2-4 (LIN) - T2-2 (E) W - W-B LIN communication line Engine switch on (IG) Pulse generation If the result is not as specified, the sliding roof ECU (sliding roof drive gear assembly) may be malfunctioning.
8. CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) Disconnect the F58 certification ECU (smart key ECU assembly) connector. Measure the voltage and resistance according to the value(s) in the table below. HINT: Measure the values on the wire harness side with the connector disconnected. Tester Connection Wiring Color Terminal Description Condition Specified Condition F58-1 (+B) - F58-15 (E) LG - W-B Battery power supply Always 11 to 14 V F58-15 (E) - Body ground W-B - Body ground Ground Always Below 1 ohms If the result is not as specified, there may be a malfunction in the wire harness. Reconnect the F58 certification ECU (smart key ECU assembly) connector. Measure the voltage and check for pulses according to the value(s) in the table below. Tester Connection Wiring Color Terminal Description Condition Specified Condition F58-16 (IG) - F58-15 (E) B - W-B Engine switch power supply Engine switch on (IG) 11 to 14 V F58-16 (IG) - F58-15 (E) B - W-B Engine switch power supply Engine switch off Below 1 V F58-29 (LIN) - F58-15 (E) V - W-B LIN communication line Engine switch on (IG) Pulse generation If the result is not as specified, the certification ECU (smart key ECU assembly) may be malfunctioning.
9. CHECK ID CODE BOX (IMMOBILIZER CODE ECU) Disconnect the F45 ID code box (immobilizer code ECU) connector. Measure the voltage and resistance according to the value(s) in the table below. HINT: Measure the values on the wire harness side with the connector disconnected. Tester Connection Wiring Color Terminal Description Condition Specified Condition F45-1 (+B) - F45-8 (GND) B - W-B Battery power supply Always 11 to 14 V F45-8 (GND) - Body ground W-B - Body ground Ground Always Below 1 ohms If the result is not as specified, there may be a malfunction in the wire harness. Reconnect the F45 ID code box (immobilizer code ECU) connector. Check for pulses according to the value(s) in the table below. Tester Connection Wiring Color Terminal Description Condition Specified Condition F45-3 (LIN1) - F45-8 (GND) R - W-B LIN communication line Engine switch on (IG) Pulse generation If the result is not as specified, the ID code box (immobilizer code ECU) may be malfunctioning.
10. CHECK STEERING LOCK ECU (STEERING LOCK ACTUATOR ASSEMBLY) Disconnect the F37 steering lock ECU (steering lock actuator assembly) connector. Measure the voltage and resistance according to the value(s) in the table below. HINT: Measure the values on the wire harness side with the connector disconnected. Tester Connection Wiring Color Terminal Description Condition Specified Condition F37-1 (GND) - Body ground W-B - Body ground Ground Always Below 1 ohms F37-6 (IG2) - F37-1 (GND) B - W-B Engine switch power supply Engine switch on (IG) 11 to 14 V F37-6 (IG2) - F37-1 (GND) B - W-B Engine switch power supply Engine switch off Below 1 V F37-7 (B) - F37-1 (GND) L - W-B Battery power supply Always 11 to 14 V If the result is not as specified, there may be a malfunction in the wire harness. Reconnect the F37 steering lock ECU (steering lock actuator assembly) connector. Check for pulses according to the value(s) in the table below. Tester Connection Wiring Color Terminal Description Condition Specified Condition F37-5 (LIN) - F37-1 (GND) R - W-B LIN communication line Engine switch on (IG) Pulse generation If the result is not as specified, the steering lock ECU (steering lock actuator assembly) may be malfunctioning.
11. CHECK POWER MANAGEMENT CONTROL ECU Disconnect the F8 power management control ECU connector. Measure the voltage and resistance according to the value(s) in the table below. HINT: Measure the values on the wire harness side with the connector disconnected. Tester Connection Wiring Color Terminal Description Condition Specified Condition F8-1 (AM22) - Body ground SB - Body ground Battery power supply Always 11 to 14 V F8-2 (AM21) - Body ground R - Body ground Battery power supply Always 11 to 14 V F8-6 (GND) - Body ground BR - Body ground Ground Always Below 1 ohms F8-5 (GND2) - Body ground W-B - Body ground Ground Always Below 1 ohms If the result is not as specified, there may be a malfunction in the wire harness. Reconnect the F8 power management control ECU connector. Check for pulses according to the value(s) in the table below. Tester Connection Wiring Color Terminal Description Condition Specified Condition F8-24 (LIN2) - F8-6 (GND) V - BR LIN communication line Engine switch on (IG) Pulse generation If the result is not as specified, the power management control ECU may be malfunctioning.
12. ACCESSORY METER ASSEMBLY (w/o Navigation System) Disconnect the G1 connector. Measure the voltage and resistance and check for pulses according to the value(s) in the table below. Tester Connection Wiring Color Terminal Description Condition Specified Condition G1-1 (IG+) - Body ground V - Body ground Engine switch power supply Engine switch off Below 1 V Engine switch on (IG) 11 to 14 V G1-2 (IG2) - Body ground LG - Body ground Engine switch power supply Engine switch off Below 1 V Engine switch on (IG) 11 to 14 V G1-3 (ACC) - Body ground W - Body ground Engine switch power supply Engine switch off Below 1 V Engine switch on (ACC) 11 to 14 V G1-12 (GND1) - Body ground W-B - Body ground Ground Always Below 1 ohms G1-13 (+B) - Body ground GR - Body ground Battery power supply Always 11 to 14 V G1-20 (LIN1) - Body ground SB - Body ground LIN communication signal Engine switch on (IG) Pulse generation If the result is not as specified, there may be a malfunction in the wire harness. Reconnect the G1 connector. Check for pulses according to the value(s) in the table below. Tester Connection Wiring Color Terminal Description Condition Specified Condition G1-20 (LIN1) - Body ground SB - Body ground LIN communication signal Engine switch on (IG) Pulse generation If the result is not as specified, the accessory meter assembly may be malfunctioning.
13. CHECK AFS ECU (HEADLIGHT SWIVEL ECU ASSEMBLY) Disconnect the A53 AFS ECU (headlight swivel ECU assembly) connector. Measure the voltage and resistance according to the value(s) in the table below. Tester Connection Wiring Color Terminal Description Condition Specified Condition A53-22 (E1) - Body ground W-B - Body ground AFS ECU (headlight swivel ECU assembly) ground Always Below 1 ohms A53-15 (IG) - Body ground V - Body ground AFS ECU (headlight swivel ECU assembly) power supply Engine switch off Below 1 V Engine switch on (IG) 11 to 14 V If the result is not as specified, there may be a malfunction in the wire harness. Reconnect the A53 AFS ECU (headlight swivel ECU assembly) connector. Measure the voltage or check for pulses according to the value(s) in the table below. Tester Connection Wiring Color Terminal Description Condition Specified Condition A53-10 (SMR) - A53-22 (E1) L - W-B Swivel motor RH LIN communication Engine switch off Below 1 V Engine switch on (IG) Pulse generation A53-29 (SML) - A53-22 (E1) P - W-B Swivel motor LH LIN communication Engine switch off Below 1 V Engine switch on (IG) Pulse generation If the result is not as specified, the AFS ECU (headlight swivel ECU assembly) may be malfunctioning.
14. CHECK INNER REAR VIEW MIRROR ASSEMBLY (w/ Automatic High Beam System) Disconnect the T5 inner rear view mirror assembly connector. Measure the resistance and voltage according to the value(s) in the table below. Tester Connection Wiring Color Terminal Description Condition Specified Condition T5-2 (E) - Body ground W - Body ground Inner rear view mirror assembly ground Always Below 1 ohms T5-1 (IG) - Body ground B - Body ground Inner rear view mirror assembly power supply Engine switch off Below 1 V Engine switch on (IG) 11 to 14 V If the result is not as specified, there may be a malfunction in the wire harness. Reconnect the T5 inner rear view mirror assembly connector. Measure the voltage or check for pulses according to the value(s) in the table below. Tester Connection Wiring Color Terminal Description Condition Specified Condition T5-12 (LIN) - T5-2 (E) L - W LIN communication line Engine switch off Below 1 V Automatic high beam system operates Pulse generation) If the result is not as specified, the inner rear view mirror assembly may be malfunctioning.
15. CHECK WINDSHIELD WIPER SWITCH ASSEMBLY Disconnect the F42 windshield wiper switch assembly connector. Measure the voltage and resistance according to the value(s) in the table below. Tester Connection Wiring Color Terminal Description Condition Specified Condition F42-1 (EW) - Body ground W-B - Body ground Body ground Always Below 1 ohms F42-3 (WIG) - Body ground R - Body ground Power source circuit Engine switch on (IG) 11 to 14 V Engine switch off Below 1 V F42-17 (+B) - Body ground L - Body ground Power source circuit Engine switch on (IG) 11 to 14 V Engine switch off Below 1 V If the result is not as specified, there may be a malfunction in the wire harness. Reconnect the F42 windshield wiper switch assembly connector. Check for pulses according to the value(s) in the table below. Tester Connection Wiring Color Terminal Description Condition Specified Condition F42-5 (MPX1) - Body ground V - Body ground Rain sensor signal Engine switch on (IG) Pulse generation If the result is not as specified, the windshield wiper relay assembly may malfunctioning.

DIAGNOSIS SYSTEM

1. DESCRIPTION The main body ECU (multiplex network body ECU) and certification ECU (smart key ECU assembly) control the LIN communication system. LIN communication system data and Diagnostic Trouble Codes (DTCs) can be read through the Data Link Connector 3 (DLC3). When the system seems to be malfunctioning, use the Techstream to check for malfunctions and perform repairs.
2. CHECK DLC3 Check the DLC3. Refer to «GENERAL INFORMATION»(ref-400649-S41373024542011051800000) .
3. INSPECT BATTERY VOLTAGE Measure the battery voltage. Standard Voltage 11 to 14 V If the voltage is below 11 V, recharge or replace the battery.

DTC CHECK / CLEAR

1. CHECK DTC Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Body Electrical / Power Source Control, Smart Key or Main Body / Trouble Codes. Check the details of the DTC(s). Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-400663-S25596778512011051800000) .
2. CLEAR DTC Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Body Electrical / Power Source Control, Smart Key or Main Body / Trouble Codes. Clear the DTC(s).

1. CHECK DTC Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Body Electrical / Power Source Control, Smart Key or Main Body / Trouble Codes. Check the details of the DTC(s). Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-400663-S04734094882011051800000) .
2. CLEAR DTC Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Body Electrical / Power Source Control, Smart Key or Main Body / Trouble Codes. Clear the DTC(s).

DATA LIST / ACTIVE TEST

1. DATA LIST 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. Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Body Electrical / Main Body / Data List. Read the Data List according to the display on the Techstream. MAIN BODY Tester Display Measurement Item/Range Normal Condition Diagnostic Note Communication D-Door Motor Connection status between front power window regulator motor assembly LH and main body ECU (multiplex network body ECU) / OK or Stop OK: Connected Stop: Not Connected DTC is output if an error occurs in LIN communication. Communication P-Door Motor Connection status between front power window regulator motor assembly RH and main body ECU (multiplex network body ECU) / OK or Stop OK: Connected Stop: Not Connected DTC is output if an error occurs in LIN communication. Communication RR-Door Motor Connection status between rear power window regulator motor assembly RH and main body ECU (multiplex network body ECU) / OK or Stop OK: Connected Stop: Not Connected DTC is output if an error occurs in LIN communication. Communication RL-Door Motor Connection status between rear power window regulator motor assembly LH and main body ECU (multiplex network body ECU) / OK or Stop OK: Connected Stop: Not Connected DTC is output if an error occurs in LIN communication. Communication Slide Roof Connection status between sliding roof ECU (sliding roof drive gear assembly) and main body ECU (multiplex network body ECU) / OK or Stop OK: Connected Stop: Not Connected DTC is output if an error occurs in LIN communication. Communication Master SW Connection status between multiplex network master switch assembly and main body ECU (multiplex network body ECU) / OK or Stop OK: Connected Stop: Not Connected DTC is output if an error occurs in LIN communication.

DIAGNOSTIC TROUBLE CODE CHART

MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

AFS ECU (HEADLIGHT SWIVEL ECU ASSEMBLY)

CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

AFS ECU (HEADLIGHT SWIVEL ECU ASSEMBLY)

CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)