CAN Communication System (Diagnostics & Symptom Tests): Overview Lexus LX J200

DESCRIPTION

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1. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL Disconnect the cable from the negative (-) battery terminal before measuring the resistance of the main wire and the branch wire. WARNING: Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system. NOTE: w/ Navigation System: After the engine switch is turned off, the HDD navigation system requires approximately 6 minutes to record various types of memory and settings. As a result, after turning the engine switch off, wait 6 minutes or more before disconnecting the cable from the negative (-) battery terminal. When disconnecting the cable, some systems need to be initialized after the cable is reconnected. Refer to «INITIALIZATION». NEXT: Go to next step
2. CHECK FOR OPEN IN CAN BUS WIRE (4WD CONTROL ECU BRANCH WIRE) Disconnect the A27 4WD control ECU connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition A27-19 (CAN+) - A27-20 (CAN-) Engine switch off 54 to 69 ohms NG --> REPAIR OR REPLACE 4WD CONTROL ECU BRANCH WIRE OR CONNECTOR (CAN+, CAN-) OK: Go to next step
3. CHECK HARNESS AND CONNECTOR (4WD CONTROL ECU - BATTERY AND BODY GROUND) Connect the cable to the negative (-) battery terminal. NOTE: When disconnecting the cable, some systems need to be initialized after the cable is reconnected. Refer to «INITIALIZATION». Disconnect the A28 4WD control ECU connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition A28-4 (GND) - Body ground Always Below 1 ohms Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition A28-3 (IG) - Body ground Engine switch on (IG) 11 to 14 V NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 4
4. REPLACE 4WD CONTROL ECU. Refer to «REMOVAL»

If 2 or more DTCs are output during the DTC check, one side of the CAN branch wire may be open (One side of the CANH [branch wire]/CANL [branch wire] of the ECU and/or sensor is open).

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1. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL Disconnect the cable from the negative (-) battery terminal before measuring the resistances of the main wire and the branch wire. WARNING: Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system. NOTE: w/ Navigation System: After the engine switch is turned off, the HDD navigation system requires approximately 6 minutes to record various types of memory and settings. As a result, after turning the engine switch off, wait 6 minutes or more before disconnecting the cable from the negative (-) battery terminal. When disconnecting the cable, some systems need to be initialized after the cable is reconnected. Refer to «INITIALIZATION». NEXT: Go to next step
2. CHECK FOR OPEN IN CAN BUS WIRE (SKID CONTROL ECU BRANCH WIRE) Disconnect the A24 master cylinder solenoid (skid control ECU) connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition A24-11 (CANH) - A24-25 (CANL) Engine switch off 54 to 69 ohms NG --> REPAIR OR REPLACE SKID CONTROL ECU BRANCH WIRE OR CONNECTOR (CANH, CANL) OK: Go to next step
3. CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU - BATTERY AND BODY GROUND) Connect the cable to the negative (-) battery terminal. NOTE: When disconnecting the cable, some systems need to be initialized after the cable is reconnected. Refer to «INITIALIZATION». Disconnect the A24 and A25 master cylinder solenoid (skid control ECU) connectors. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition A24-1 (GND1) - Body ground Always Below 1 ohms A24-32 (GND2) - Body ground A25-4 (GND3) - Body ground Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition A24-2 (+BM1) - Body ground Always 11 to 14 V A24-31 (+BS) - Body ground A25-2 (+BM2) - Body ground A24-46 (IG1) - Body ground Engine switch on (IG) 11 to 14 V A25-1 (IG2) - Body ground NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 4
4. REPLACE MASTER CYLINDER SOLENOID (SKID CONTROL ECU). Refer to «DISASSEMBLY»

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1. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL Disconnect the cable from the negative (-) battery terminal before measuring the resistances of the main wire and the branch wire. WARNING: Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system. NOTE: w/ Navigation System: After the engine switch is turned off, the HDD navigation system requires approximately 6 minutes to record various types of memory and settings. As a result, after turning the engine switch off, wait 6 minutes or more before disconnecting the cable from the negative (-) battery terminal. When disconnecting the cable, some systems need to be initialized after the cable is reconnected. Refer to «INITIALIZATION». NEXT: Go to next step
2. CHECK FOR OPEN IN CAN BUS WIRE (YAW RATE SENSOR BRANCH WIRE) Disconnect the E50 yaw rate sensor connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition E50-3 (CANH) - E50-2 (CANL) Engine switch off 54 to 69 ohms NG --> REPAIR OR REPLACE YAW RATE SENSOR BRANCH WIRE OR CONNECTOR (CANH, CANL) OK: Go to next step
3. CHECK HARNESS AND CONNECTOR (YAW RATE SENSOR - BATTERY AND BODY GROUND) Connect the cable to the negative (-) battery terminal. NOTE: When disconnecting the cable, some systems need to be initialized after the cable is reconnected. Refer to «INITIALIZATION». Disconnect the E50 yaw rate sensor connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition E50-1 (GND) - Body ground Always Below 1 ohms Measure the voltage according to the value(s) in table below. Standard Voltage Tester Connection Switch Condition Specified Condition E50-4 (IG) - Body ground Engine switch on (IG) 11 to 14 V NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 4
4. REPLACE YAW RATE SENSOR ASSEMBLY. Refer to «REMOVAL»

If 2 or more DTCs are output during the DTC check, one side of the CAN branch wire may be open (One side of the CANH [branch wire]/CANL [branch wire] of the ECU and/or sensor is open).

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1. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL Disconnect the cable from the negative (-) battery terminal before measuring the resistances of the main wire and the branch wire. WARNING: Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system. NOTE: w/ Navigation System: After the engine switch is turned off, the HDD navigation system requires approximately 6 minutes to record various types of memory and settings. As a result, after turning the engine switch off, wait 6 minutes or more before disconnecting the cable from the negative (-) battery terminal. When disconnecting the cable, some systems need to be initialized after the cable is reconnected. Refer to «INITIALIZATION». NEXT: Go to next step
2. CHECK FOR OPEN IN CAN BUS WIRE (STEERING ANGLE SENSOR BRANCH WIRE) Disconnect the E11 steering angle sensor connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition E11-10 (CANH) - E11-9 (CANL) Engine switch off 54 to 69 ohms NG --> REPAIR OR REPLACE STEERING ANGLE SENSOR BRANCH WIRE OR CONNECTOR (CANH, CANL) OK: Go to next step
3. CHECK HARNESS AND CONNECTOR (STEERING ANGLE SENSOR - BATTERY AND BODY GROUND) Connect the cable to the negative (-) battery terminal. NOTE: When disconnecting the cable, some systems need to be initialized after the cable is reconnected. Refer to «INITIALIZATION». Disconnect the E11 steering angle sensor connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition E11-2 (ESS) - Body ground Always Below 1 ohms Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition E11-3 (BAT) - Body ground Always 11 to 14 V E11-1 (IG) - Body ground Engine switch on (IG) 11 to 14 V NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 4
4. REPLACE STEERING ANGLE SENSOR. Refer to «REMOVAL»

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1. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL Disconnect the cable from the negative (-) battery terminal before measuring the resistances of the main wire and the branch wire. WARNING: Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system. NOTE: w/ Navigation System: After the engine switch is turned off, the HDD navigation system requires approximately 6 minutes to record various types of memory and settings. As a result, after turning the engine switch off, wait 6 minutes or more before disconnecting the cable from the negative (-) battery terminal. When disconnecting the cable, some systems need to be initialized after the cable is reconnected. Refer to «INITIALIZATION». NEXT: Go to next step
2. CHECK FOR OPEN IN CAN BUS WIRE (TIRE PRESSURE WARNING ECU BRANCH WIRE) Disconnect the L10 tire pressure warning ECU connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition L10-6 (CANP) - L10-12 (CANN) Engine switch off 54 to 69 ohms NG --> REPAIR OR REPLACE TIRE PRESSURE WARNING ECU BRANCH WIRE OR CONNECTOR (CANP, CANN) OK: Go to next step
3. CHECK HARNESS AND CONNECTOR (TIRE PRESSURE WARNING ECU - BATTERY AND BODY GROUND) Connect the cable to the negative (-) battery terminal. NOTE: When disconnecting the cable, some systems need to be initialized after the cable is reconnected. Refer to «INITIALIZATION». Disconnect the L10 tire pressure warning ECU connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition L10-7 (GND) - Body ground Always Below 1 ohms Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition L10-1 (IG) - Body ground Engine switch on (IG) 11 to 14 V NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 4
4. REPLACE TIRE PRESSURE WARNING ECU. Refer to «REMOVAL»

If 2 or more DTCs are output during the DTC check, one side of the CAN branch wire may be open (One side of the CANH [branch wire]/CANL [branch wire] of the ECU and/or sensor is open).

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1. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL Disconnect the cable from the negative (-) battery terminal before measuring the resistances of the main wire and the branch wire. WARNING: Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system. NOTE: w/ Navigation System: After the engine switch is turned off, the HDD navigation system requires approximately 6 minutes to record various types of memory and settings. As a result, after turning the engine switch off, wait 6 minutes or more before disconnecting the cable from the negative (-) battery terminal. When disconnecting the cable, some systems need to be initialized after the cable is reconnected. Refer to «INITIALIZATION». NEXT: Go to next step
2. CHECK FOR OPEN IN CAN BUS WIRE (STEERING CONTROL ECU BRANCH WIRE) Disconnect the E84 steering control ECU connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition E84-9 (CANH) - E84-20 (CANL) Engine switch off 54 to 69 ohms NG --> REPAIR OR REPLACE STEERING CONTROL ECU BRANCH WIRE OR CONNECTOR (CANH, CANL) OK: Go to next step
3. CHECK HARNESS AND CONNECTOR (STEERING CONTROL ECU - BATTERY AND BODY GROUND) Connect the cable to the negative (-) battery terminal. NOTE: When disconnecting the cable, some systems need to be initialized after the cable is reconnected. Refer to «INITIALIZATION». Disconnect the E82 and E83 steering control ECU connectors. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition E82-7 (PGND) - Body ground Always Below 1 ohms E83-8 (PGD2) - Body ground Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition E82-10 (+B1) - Body ground Always 11 to 14 V E82-8 (PIG) - Body ground E82-3 (IG) - Body ground Engine switch on (IG) 11 to 14 V NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 4
4. REPLACE STEERING CONTROL ECU. Refer to «REMOVAL»(/lexus/lx/j200-2007-2012/remont/electronic-steering/#variable-gear-ratio-steering-service-information)

If 2 or more DTCs are output during the DTC check, one side of the CAN branch wire may be open (One side of the CANH [branch wire]/CANL [branch wire] of the ECU and/or sensor is open).

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1. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL Disconnect the cable from the negative (-) battery terminal before measuring the resistances of the main wire and the branch wire. WARNING: Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system. NOTE: w/ Navigation System: After the engine switch is turned off, the HDD navigation system requires approximately 6 minutes to record various types of memory and settings. As a result, after turning the engine switch off, wait 6 minutes or more before disconnecting the cable from the negative (-) battery terminal. When disconnecting the cable, some systems need to be initialized after the cable is reconnected. Refer to «INITIALIZATION». NEXT: Go to next step
2. CHECK FOR OPEN IN CAN BUS WIRE (SUSPENSION CONTROL ECU) Disconnect the K30 suspension control ECU connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition K30-7 (CANH) - K30-8 (CANL) Engine switch off 54 to 69 ohms NG --> REPAIR OR REPLACE SUSPENSION CONTROL ECU BRANCH WIRE OR CONNECTOR (CANH, CANL) OK: Go to next step
3. CHECK HARNESS AND CONNECTOR (SUSPENSION CONTROL ECU - BATTERY AND BODY GROUND) Connect the cable to the negative (-) battery terminal. NOTE: When disconnecting the cable, some systems need to be initialized after the cable is reconnected. Refer to «INITIALIZATION». Disconnect the K30 and K31 suspension control ECU connectors. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition K30-1 (GND) - Body ground Always Below 1 ohms K31-6 (GND) - Body ground Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition K30-3 (BAT2) - Body ground Always 11 to 14 V K31-1 (BAT) - Body ground K30-5 (IG) - Body ground Engine switch on (IG) 11 to 14 V NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 4
4. REPLACE SUSPENSION CONTROL ECU. Refer to «REMOVAL»

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1. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL Disconnect the cable from the negative (-) battery terminal before measuring the resistances of the main wire and the branch wire. WARNING: Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system. NOTE: w/ Navigation System: After the engine switch is turned off, the HDD navigation system requires approximately 6 minutes to record various types of memory and settings. As a result, after turning the engine switch off, wait 6 minutes or more before disconnecting the cable from the negative (-) battery terminal. When disconnecting the cable, some systems need to be initialized after the cable is reconnected. Refer to «INITIALIZATION». NEXT: Go to next step
2. CHECK FOR OPEN IN CAN BUS WIRE (REAR JUNCTION BLOCK BRANCH WIRE) Disconnect the L33 No. 2 main body ECU connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition L33-11 (MPX+) - L33-12 (MPX-) Engine switch off 54 to 69 ohms NG --> REPAIR OR REPLACE NO. 2 MAIN BODY ECU BRANCH WIRE OR CONNECTOR (MPX+, MPX-) OK: Go to next step
3. CHECK HARNESS AND CONNECTOR (NO. 2 MAIN BODY ECU - BATTERY AND BODY GROUND) Connect the cable to the negative (-) battery terminal. NOTE: When disconnecting the cable, some systems need to be initialized after the cable is reconnected. Refer to «INITIALIZATION». Disconnect the L33 No. 2 main body ECU connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition L33-7 (GND) - Body ground Always Below 1 ohms Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition L33-14 (BECU) - Body ground Always 11 to 14 V L33-13 (SIG) - Body ground Engine switch on (IG) 11 to 14 V NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 4
4. REPLACE NO. 2 MAIN BODY ECU. Refer to «REMOVAL»

HINT

For vehicles with the LEXUS link system only.

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1. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL Disconnect the cable from the negative (-) battery terminal before measuring the resistances of the main wire and the branch wire. WARNING: Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system. NOTE: w/ Navigation System: After the engine switch is turned off, the HDD navigation system requires approximately 6 minutes to record various types of memory and settings. As a result, after turning the engine switch off, wait 6 minutes or more before disconnecting the cable from the negative (-) battery terminal. When disconnecting the cable, some systems need to be initialized after the cable is reconnected. Refer to «INITIALIZATION». NEXT: Go to next step
2. CHECK FOR OPEN IN CAN BUS WIRE (BUS BUFFER ECU BRANCH WIRE) Disconnect the P5 bus buffer ECU connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition P5-1 (CANP) - P5-2 (CANN) Engine switch off 54 to 69 ohms NG --> REPAIR OR REPLACE BUS BUFFER ECU BRANCH WIRE OR CONNECTOR (CANP, CANN) OK: Go to next step
3. CHECK HARNESS AND CONNECTOR (BUS BUFFER ECU - BATTERY AND BODY GROUND) Connect the cable to the negative (-) battery terminal. NOTE: When disconnecting the cable, some systems need to be initialized after the cable is reconnected. Refer to «INITIALIZATION». Disconnect the P5 bus buffer ECU connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition P5-4 (GND) - Body ground Always Below 1 ohms Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition P5-3 (+B) - Body ground Always 11 to 14 V NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 4
4. REPLACE BUS BUFFER ECU. Refer to «REMOVAL»

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1. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL Disconnect the cable from the negative (-) battery terminal before measuring the resistances of the main wire and the branch wire. WARNING: Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system. NOTE: w/ Navigation System: After the engine switch is turned off, the HDD navigation system requires approximately 6 minutes to record various types of memory and settings. As a result, after turning the engine switch off, wait 6 minutes or more before disconnecting the cable from the negative (-) battery terminal. When disconnecting the cable, some systems need to be initialized after the cable is reconnected. Refer to «INITIALIZATION». NEXT: Go to next step
2. CHECK FOR OPEN IN CAN BUS WIRE (OUTER MIRROR CONTROL ECU BRANCH WIRE) Disconnect the I18 outer mirror control ECU connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition I18-1 (CANH) - I18-21 (CANL) Engine switch off 54 to 69 ohms NG --> REPAIR OR REPLACE OUTER MIRROR CONTROL ECU BRANCH WIRE OR CONNECTOR (CANH, CANL) OK: Go to next step
3. CHECK HARNESS AND CONNECTOR (OUTER MIRROR CONTROL ECU - BATTERY AND BODY GROUND) Connect the cable to the negative (-) battery terminal. NOTE: When disconnecting the cable, some systems need to be initialized after the cable is reconnected. Refer to «INITIALIZATION». Disconnect the I17 outer mirror control ECU connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition I17-9 (GND) - Body ground Always Below 1 ohms Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition I17-3 (B) - Body ground Always 11 to 14 V I17-4 (ACC) - Body ground Engine switch on (ACC) 11 to 14 V NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 4
4. REPLACE OUTER MIRROR CONTROL ECU ASSEMBLY. Refer to «REMOVAL»

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1. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL Disconnect the cable from the negative (-) battery terminal before measuring the resistances of the main wire and the branch wire. WARNING: Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system. NOTE: w/ Navigation System: After the engine switch is turned off, the HDD navigation system requires approximately 6 minutes to record various types of memory and settings. As a result, after turning the engine switch off, wait 6 minutes or more before disconnecting the cable from the negative (-) battery terminal. When disconnecting the cable, some systems need to be initialized after the cable is reconnected. Refer to «INITIALIZATION». NEXT: Go to next step
2. CHECK FOR OPEN IN CAN BUS WIRE (POSITION CONTROL ECU AND SWITCH BRANCH WIRE) Disconnect the C15 position control ECU and switch connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition C15-5 (MPX1) - C15-1 (MPX2) Engine switch off 54 to 69 ohms NG --> REPAIR OR REPLACE POSITION CONTROL ECU AND SWITCH BRANCH WIRE OR CONNECTOR (MPX1, MPX2) OK: Go to next step
3. CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU AND SWITCH - BATTERY AND BODY GROUND) Connect the cable to the negative (-) battery terminal. NOTE: When disconnecting the cable, some systems need to be initialized after the cable is reconnected. Refer to «INITIALIZATION». Disconnect the c14 position control ECU and switch connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition c14-1 (GND) - Body ground Always Below 1 ohms Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition c14-5 (+B) - Body ground Always 11 to 14 V NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 4
4. REPLACE POSITION CONTROL ECU AND SWITCH ASSEMBLY. Refer to «REMOVAL»

HINT

For vehicles with the power back door system only.

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1. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL Disconnect the cable from the negative (-) battery terminal before measuring the resistances of the main wire and the branch wire. WARNING: Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system. NOTE: w/ Navigation System: After the engine switch is turned off, the HDD navigation system requires approximately 6 minutes to record various types of memory and settings. As a result, after turning the engine switch off, wait 6 minutes or more before disconnecting the cable from the negative (-) battery terminal. When disconnecting the cable, some systems need to be initialized after the cable is reconnected. Refer to «INITIALIZATION». NEXT: Go to next step
2. CHECK FOR OPEN IN CAN BUS WIRE (POWER BACK DOOR UNIT BRANCH WIRE) Disconnect the L36 power back door unit (power back door ECU) connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition L36-6 (MPX1) - L36-5 (MPX2) Engine switch off 54 to 69 ohms NG --> REPAIR OR REPLACE POWER BACK DOOR UNIT (POWER BACK DOOR ECU) BRANCH WIRE OR CONNECTOR (MPX1, MPX2) OK: Go to next step
3. CHECK HARNESS AND CONNECTOR (POWER BACK DOOR UNIT - BATTERY AND BODY GROUND) Connect the cable to the negative (-) battery terminal. NOTE: When disconnecting the cable, some systems need to be initialized after the cable is reconnected. Refer to «INITIALIZATION». Disconnect the L36 power back door unit (power back door ECU) connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition L36-11 (GND) - Body ground Always Below 1 ohms Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition L36-10 (ECUB) - Body ground Always 11 to 14 V NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 4
4. REPLACE POWER BACK DOOR UNIT ASSEMBLY (POWER BACK DOOR ECU). Refer to «REMOVAL»

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1. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL Disconnect the cable from the negative (-) battery terminal before measuring the resistances of the main wire and the branch wire. WARNING: Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system. NOTE: w/ Navigation System: After the engine switch is turned off, the HDD navigation system requires approximately 6 minutes to record various types of memory and settings. As a result, after turning the engine switch off, wait 6 minutes or more before disconnecting the cable from the negative (-) battery terminal. When disconnecting the cable, some systems need to be initialized after the cable is reconnected. Refer to «INITIALIZATION». NEXT: Go to next step
2. CHECK FOR OPEN IN CAN BUS WIRE (CERTIFICATION ECU BRANCH WIRE) Disconnect the E29 certification ECU (smart key ECU) connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition E29-27 (CANH) - E29-28 (CANL) Engine switch off 54 to 69 ohms NG --> REPAIR OR REPLACE CERTIFICATION ECU (SMART KEY ECU) BRANCH WIRE OR CONNECTOR (CANH, CANL) OK: Go to next step
3. CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU - BATTERY AND BODY GROUND) Connect the cable to the negative (-) battery terminal. NOTE: When disconnecting the cable, some systems need to be initialized after the cable is reconnected. Refer to «INITIALIZATION». Disconnect the E29 certification ECU (smart key ECU) connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition E29-17 (E) - Body ground Always Below 1 ohms Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition E29-1 (+B) - Body ground Always 11 to 14 V E29-19 (ACC) - Body ground Engine switch on (ACC) 11 to 14 V E29-18 (IG) - Body ground Engine switch on (IG) 11 to 14 V NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 4
4. REPLACE CERTIFICATION ECU ASSEMBLY (SMART KEY ECU). Refer to «REMOVAL»

If 2 or more DTCs are output during the DTC check, one side of the CAN branch wire may be open (one side of the CANH [branch wire]/CANL [branch wire] of the ECU and/or sensor is open).

1. *1: w/ Power Back Door System
2. *2: w/ LEXUS Link System

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1. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL Disconnect the cable from the negative (-) battery terminal before measuring the resistances of the main wire and the branch wire. WARNING: Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system. NOTE: w/ Navigation System: After the engine switch is turned off, the HDD navigation system requires approximately 6 minutes to record various types of memory and settings. As a result, after turning the engine switch off, wait 6 minutes or more before disconnecting the cable from the negative (-) battery terminal. When disconnecting the cable, some systems need to be initialized after the cable is reconnected. Refer to «INITIALIZATION». NEXT: Go to next step
2. CHECK CAN BUS WIRE (MAIN WIRE FOR DISCONNECTION, BUS LINE FOR SHORT CIRCUIT) Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition Resistance Malfunction E3-16 (CANP) - E3-15 (CANN) Engine switch off 54 to 69 ohms Below 53 ohms: Short in line Engine switch off 70 ohms or higher: Open in CAN main bus line E3-16 (CANP) - 2A-1 (ALTB) Engine switch off 6 kohms or higher Below 6 kohms: +B short E3-15 (CANN) - 2A-1 (ALTB) Engine switch off 6 kohms or higher Below 6 kohms: +B short E3-16 (CANP) - 2D-62 (GND2) Engine switch off 200 ohms or higher Below 200 ohms: Ground short E3-15 (CANN) - 2D-62 (GND2) Engine switch off 200 ohms or higher Below 200 ohms: Ground short RESULT Result Proceed to NG - Open in CAN main bus line A NG - Short in line - +B short - Ground short B OK C C --> See step 61 B --> See step 18 A: Go to next step
3. CHECK FOR OPEN IN CAN BUS MAIN WIRE (NO. 2 CAN JUNCTION CONNECTOR - MAIN BODY ECU) Disconnect the L29 No. 2 CAN junction connector connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition L29-1 (CANH) - L29-2 (CANL) Engine switch off 108 to 132 ohms NG --> See step 5 OK: Go to next step
4. CHECK FOR OPEN IN CAN BUS MAIN WIRE (NO. 2 CAN JUNCTION CONNECTOR - COMBINATION METER) Disconnect the L30 No. 2 CAN junction connector connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition L30-1 (CANH) - L30-2 (CANL) Engine switch off 108 to 132 ohms NG --> See step 10 OK --> REPAIR OR REPLACE NO. 2 CAN JUNCTION CONNECTOR
5. CONNECT CONNECTOR Reconnect the L29 No. 2 CAN junction connector connector. NEXT: Go to next step
6. CHECK FOR OPEN IN CAN BUS MAIN WIRE (NO. 8 JUNCTION CONNECTOR - MAIN BODY ECU) Disconnect the E76 No. 8 junction connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition E76-6 (CANH) - E76-17 (CANL) Engine switch off 108 to 132 ohms NG --> See step 8 OK: Go to next step
7. CHECK FOR OPEN IN CAN BUS MAIN WIRE (NO. 8 JUNCTION CONNECTOR - NO. 2 CAN JUNCTION CONNECTOR) Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition E76-1 (CANH) - E76-12 (CANL) Engine switch off 108 to 132 ohms NG --> REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (NO. 8 JUNCTION CONNECTOR - NO. 2 CAN JUNCTION CONNECTOR) OK --> REPAIR OR REPLACE NO. 8 JUNCTION CONNECTOR
8. CONNECT CONNECTOR Reconnect the E76 No. 8 junction connector connector. NEXT: Go to next step
9. CHECK FOR OPEN IN CAN BUS MAIN WIRE (MAIN BODY ECU - NO. 8 JUNCTION CONNECTOR) Disconnect the E3 main body ECU (cowl side junction block LH) connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition E3-16 (CANP) - E3-15 (CANN) Engine switch off 108 to 132 ohms NG --> REPAIR OR REPLACE CAN MAIN WIRE CONNECTED TO MAIN BODY ECU (COWL SIDE JUNCTION BLOCK LH) (MAIN BODY ECU - NO. 8 JUNCTION CONNECTOR) OK --> REPLACE MAIN BODY ECU (COWL SIDE JUNCTION BLOCK LH)
10. CONNECT CONNECTOR Reconnect the L29 and L30 No. 2 CAN junction connector connectors. NEXT: Go to next step
11. CHECK FOR OPEN IN CAN BUS MAIN WIRE (NO. 9 JUNCTION CONNECTOR - NO. 10 JUNCTION CONNECTOR) Disconnect the E70 No. 10 junction connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition E70-1 (CANH) - E70-12 (CANL) Engine switch off 108 to 132 ohms NG --> See step 15 OK: Go to next step
12. CHECK FOR OPEN IN CAN BUS MAIN WIRE (NO. 10 JUNCTION CONNECTOR - COMBINATION METER) Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition E70-3 (CANH) - E70-14 (CANL) Engine switch off 108 to 132 ohms NG --> See step 13 OK --> REPAIR OR REPLACE NO. 10 CAN JUNCTION CONNECTOR
13. CONNECT CONNECTOR Reconnect the E70 No. 10 junction connector connector. NEXT: Go to next step
14. CHECK FOR OPEN IN CAN BUS MAIN WIRE (COMBINATION METER - NO. 10 JUNCTION CONNECTOR) Disconnect the E77 combination meter connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition E77-37 (MPX+) - E77-38 (MPX-) Engine switch off 108 to 132 ohms NG --> REPAIR OR REPLACE CAN MAIN WIRE CONNECTED TO COMBINATION METER (COMBINATION METER - NO. 10 JUNCTION BLOCK) OK --> See step 62
15. CONNECT CONNECTOR Reconnect the E70 No. 10 junction connector connector. NEXT: Go to next step
16. CHECK FOR OPEN IN CAN BUS MAIN WIRE (NO. 9 JUNCTION CONNECTOR - NO. 10 JUNCTION CONNECTOR) Disconnect the E73 No. 9 junction connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition E73-1 (CANH) - E73-12 (CANL) Engine switch off 108 to 132 ohms NG --> REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (NO. 9 JUNCTION CONNECTOR - NO. 10 JUNCTION CONNECTOR) OK: Go to next step
17. CHECK FOR OPEN IN CAN BUS MAIN WIRE (NO. 2 CAN JUNCTION CONNECTOR - NO. 9 JUNCTION CONNECTOR) Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition E73-2 (CANH) - E73-13 (CANL) Engine switch off 108 to 132 ohms NG --> REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (NO. 2 CAN JUNCTION CONNECTOR - NO. 9 JUNCTION CONNECTOR) OK --> REPAIR OR REPLACE NO. 9 JUNCTION CONNECTOR
18. CHECK FOR SHORT IN CAN BUS WIRES (NO. 10 JUNCTION CONNECTOR SIDE) Disconnect the E70 No. 10 junction connector connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition E3-16 (CANP) - E3-15 (CANN) Engine switch off 108 to 132 ohms E3-16 (CANP) - E22-4 (CG) Engine switch off 200 ohms or higher E3-15 (CANN) - E22-4 (CG) Engine switch off 200 ohms or higher E3-16 (CANP) - E22-16 (BAT) Engine switch off 6 kohms or higher E3-15 (CANN) - E22-16 (BAT) Engine switch off 6 kohms or higher NG --> See step 20 OK: Go to next step
19. CHECK FOR SHORT IN CAN BUS WIRES (NO. 10 JUNCTION CONNECTOR - COMBINATION METER) Measure the resistance according to the value(s) in the table below. RESULT Tester Connection Switch Condition Measured Resistance Proceed to E70-3 (CANH) - E70-14 (CANL) Engine switch off 1 ohms or higher OK E70-3 (CANH) - E70-14 (CANL) Engine switch off Below 1 ohms NG E70-3 (CANH) - E22-4 (CG) Engine switch off 1 ohms or higher OK E70-14 (CANL) - E22-4 (CG) Engine switch off 1 ohms or higher OK E70-3 (CANH) - E22-4 (CG) Engine switch off Below 1 ohms NG E70-14 (CANL) - E22-4 (CG) Engine switch off Below 1 ohms NG E70-3 (CANH) - E22-16 (BAT) Engine switch off 1 ohms or higher OK E70-14 (CANL) - E22-16 (BAT) Engine switch off 1 ohms or higher OK E70-3 (CANH) - E22-16 (BAT) Engine switch off Below 1 ohms NG E70-14 (CANL) - E22-16 (BAT) Engine switch off Below 1 ohms NG NG --> See step 39 OK --> REPAIR OR REPLACE NO. 10 JUNCTION CONNECTOR
20. CONNECT CONNECTOR Reconnect the E70 No. 10 junction connector connector. NEXT: Go to next step
21. CHECK FOR SHORT IN CAN BUS WIRES (NO. 10 JUNCTION CONNECTOR - NO. 9 JUNCTION CONNECTOR) Disconnect the E73 No. 9 junction connector connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition E73-1 (CANH) - E73-12 (CANL) Engine switch off 108 to 132 ohms E73-1 (CANH) - E22-4 (CG) Engine switch off 200 ohms or higher E73-12 (CANL) - E22-4 (CG) Engine switch off 200 ohms or higher E73-1 (CANH) - E22-16 (BAT) Engine switch off 6 kohms or higher E73-12 (CANL) - E22-16 (BAT) Engine switch off 6 kohms or higher NG --> REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (NO. 10 JUNCTION CONNECTOR - NO. 9 JUNCTION CONNECTOR) OK: Go to next step
22. CHECK FOR SHORT IN CAN BUS WIRES (NO. 9 JUNCTION CONNECTOR SIDE) Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition E3-16 (CANP) - E3-15 (CANN) Engine switch off 108 to 132 ohms E3-16 (CANP) - E22-4 (CG) Engine switch off 200 ohms or higher E3-15 (CANN) - E22-4 (CG) Engine switch off 200 ohms or higher E3-16 (CANP) - E22-16 (BAT) Engine switch off 6 kohms or higher E3-15 (CANN) - E22-16 (BAT) Engine switch off 6 kohms or higher NG --> See step 25 OK: Go to next step
23. CHECK FOR SHORT IN CAN BUS WIRES (NO. 9 JUNCTION CONNECTOR - BUS BUFFER ECU) NOTE: For vehicles without the LEXUS link system, go to "Check for Short in CAN Bus Wires (No. 9 Junction Connector - Windshield Wiper ECU)". Measure the resistance according to the value(s) in the table below. RESULT Tester Connection Switch Condition Measured Resistance Proceed to E73-5 (CANH) - E73-16 (CANL) Engine switch off 1 ohms or higher OK E73-5 (CANH) - E73-16 (CANL) Engine switch off Below 1 ohms NG E73-5 (CANH) - E22-4 (CG) Engine switch off 1 ohms or higher OK E73-16 (CANL) - E22-4 (CG) Engine switch off 1 ohms or higher OK E73-5 (CANH) - E22-4 (CG) Engine switch off Below 1 ohms NG E73-16 (CANL) - E22-4 (CG) Engine switch off Below 1 ohms NG E73-5 (CANH) - E22-16 (BAT) Engine switch off 1 ohms or higher OK E73-16 (CANL) - E22-16 (BAT) Engine switch off 1 ohms or higher OK E73-5 (CANH) - E22-16 (BAT) Engine switch off Below 1 ohms NG E73-16 (CANL) - E22-16 (BAT) Engine switch off Below 1 ohms NG NG --> See step 41 OK: Go to next step
24. CHECK FOR SHORT IN CAN BUS WIRES (NO. 9 JUNCTION CONNECTOR - WINDSHIELD WIPER ECU) Measure the resistance according to the value(s) in the table below. RESULT Tester Connection Switch Condition Measured Resistance Proceed to E73-4 (CANH) - E73-15 (CANL) Engine switch off 1 ohms or higher OK E73-4 (CANH) - E73-15 (CANL) Engine switch off Below 1 ohms NG E73-4 (CANH) - E22-4 (CG) Engine switch off 1 ohms or higher OK E73-15 (CANL) - E22-4 (CG) Engine switch off 1 ohms or higher OK E73-4 (CANH) - E22-4 (CG) Engine switch off Below 1 ohms NG E73-15 (CANL) - E22-4 (CG) Engine switch off Below 1 ohms NG E73-4 (CANH) - E22-16 (BAT) Engine switch off 1 ohms or higher OK E73-15 (CANL) - E22-16 (BAT) Engine switch off 1 ohms or higher OK E73-4 (CANH) - E22-16 (BAT) Engine switch off Below 1 ohms NG E73-15 (CANL) - E22-16 (BAT) Engine switch off Below 1 ohms NG NG --> See step 43 OK --> REPAIR OR REPLACE NO. 9 JUNCTION CONNECTOR
25. CONNECT CONNECTOR Reconnect the E73 No. 9 junction connector connector. NEXT: Go to next step
26. CHECK FOR SHORT IN CAN BUS WIRES (NO. 2 CAN JUNCTION CONNECTOR - NO. 9 JUNCTION CONNECTOR) Disconnect the L30 No. 2 CAN junction connector connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition L30-1 (CANH) - L30-2 (CANL) Engine switch off 108 to 132 ohms L30-1 (CANH) - E22-4 (CG) Engine switch off 200 ohms or higher L30-2 (CANL) - E22-4 (CG) Engine switch off 200 ohms or higher L30-1 (CANH) - E22-16 (BAT) Engine switch off 6 kohms or higher L30-2 (CANL) - E22-16 (BAT) Engine switch off 6 kohms or higher NG --> REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (NO. 2 CAN JUNCTION CONNECTOR - NO. 9 JUNCTION CONNECTOR) OK: Go to next step
27. CHECK FOR SHORT IN CAN BUS WIRES (NO. 2 CAN JUNCTION CONNECTOR SIDE) Disconnect the L29 No. 2 CAN junction connector connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition E3-16 (CANP) - E3-15 (CANN) Engine switch off 108 to 132 ohms E3-16 (CANP) - E22-4 (CG) Engine switch off 200 ohms or higher E3-15 (CANN) - E22-4 (CG) Engine switch off 200 ohms or higher E3-16 (CANP) - E22-16 (BAT) Engine switch off 6 kohms or higher E3-15 (CANN) - E22-16 (BAT) Engine switch off 6 kohms or higher NG --> See step 32 OK: Go to next step
28. CONNECT CONNECTOR Reconnect the E73 No. 9 junction connector connector. NEXT: Go to next step
29. CHECK FOR SHORT IN CAN BUS WIRES (NO. 2 CAN JUNCTION CONNECTOR - TIRE PRESSURE WARNING ECU) Disconnect the L31 No. 2 CAN junction connector connector. Measure the resistance according to the value(s) in the table below. RESULT Tester Connection Switch Condition Measured Resistance Proceed to L31-1 (CANH) - L31-2 (CANL) Engine switch off 1 ohms or higher OK L31-1 (CANH) - L31-2 (CANL) Engine switch off Below 1 ohms NG L31-1 (CANH) - E22-4 (CG) Engine switch off 1 ohms or higher OK L31-2 (CANL) - E22-4 (CG) Engine switch off 1 ohms or higher OK L31-1 (CANH) - E22-4 (CG) Engine switch off Below 1 ohms NG L31-2 (CANL) - E22-4 (CG) Engine switch off Below 1 ohms NG L31-1 (CANH) - E22-16 (BAT) Engine switch off 1 ohms or higher OK L31-2 (CANL) - E22-16 (BAT) Engine switch off 1 ohms or higher OK L31-1 (CANH) - E22-16 (BAT) Engine switch off Below 1 ohms NG L31-2 (CANL) - E22-16 (BAT) Engine switch off Below 1 ohms NG NG --> See step 45 OK: Go to next step
30. CHECK FOR SHORT IN CAN BUS WIRES (NO. 2 CAN JUNCTION CONNECTOR - POWER BACK DOOR UNIT) NOTE: For vehicles without the power back door system, go to "Check for Short in CAN Bus Wires (No. 2 CAN Junction Connector - No. 2 Main Body ECU)". Measure the resistance according to the value(s) in the table below. RESULT Tester Connection Switch Condition Measured Resistance Proceed to L45-1 (CANH) - L45-2 (CANL) Engine switch off 1 ohms or higher OK L45-1 (CANH) - L45-2 (CANL) Engine switch off Below 1 ohms NG L45-1 (CANH) - E22-4 (CG) Engine switch off 1 ohms or higher OK L45-2 (CANL) - E22-4 (CG) Engine switch off 1 ohms or higher OK L45-1 (CANH) - E22-4 (CG) Engine switch off Below 1 ohms NG L45-2 (CANL) - E22-4 (CG) Engine switch off Below 1 ohms NG L45-1 (CANH) - E22-16 (BAT) Engine switch off 1 ohms or higher OK L45-2 (CANL) - E22-16 (BAT) Engine switch off 1 ohms or higher OK L45-1 (CANH) - E22-16 (BAT) Engine switch off Below 1 ohms NG L45-2 (CANL) - E22-16 (BAT) Engine switch off Below 1 ohms NG NG --> See step 47 OK: Go to next step
31. CHECK FOR SHORT IN CAN BUS WIRES (NO. 2 CAN JUNCTION CONNECTOR - NO. 2 MAIN BODY ECU) Measure the resistance according to the value(s) in the table below. RESULT Tester Connection Switch Condition Measured Resistance Proceed to L46-1 (CANH) - L46-2 (CANL) Engine switch off 1 ohms or higher OK L46-1 (CANH) - L46-2 (CANL) Engine switch off Below 1 ohms NG L46-1 (CANH) - E22-4 (CG) Engine switch off 1 ohms or higher OK L46-2 (CANL) - E22-4 (CG) Engine switch off 1 ohms or higher OK L46-1 (CANH) - E22-4 (CG) Engine switch off Below 1 ohms NG L46-2 (CANL) - E22-4 (CG) Engine switch off Below 1 ohms NG L46-1 (CANH) - E22-16 (BAT) Engine switch off 1 ohms or higher OK L46-2 (CANL) - E22-16 (BAT) Engine switch off 1 ohms or higher OK L46-1 (CANH) - E22-16 (BAT) Engine switch off Below 1 ohms NG L46-2 (CANL) - E22-16 (BAT) Engine switch off Below 1 ohms NG NG --> See step 49 OK --> REPLACE NO. 2 CAN JUNCTION CONNECTOR
32. CONNECT CONNECTOR Reconnect the L29 and L30 No. 2 CAN junction connector connectors. NEXT: Go to next step
33. CHECK FOR SHORT IN CAN BUS WIRES (NO. 2 CAN JUNCTION CONNECTOR - NO. 8 JUNCTION CONNECTOR) Disconnect the E76 No. 8 junction connector connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition E76-1 (CANH) - E76-12 (CANL) Engine switch off 108 to 132 ohms E76-1 (CANH) - E22-4 (CG) Engine switch off 200 ohms or higher E76-12 (CANL) - E22-4 (CG) Engine switch off 200 ohms or higher E76-1 (CANH) - E22-16 (BAT) Engine switch off 6 kohms or higher E76-12 (CANL) - E22-16 (BAT) Engine switch off 6 kohms or higher NG --> REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (NO. 8 JUNCTION CONNECTOR - NO. 2 CAN JUNCTION CONNECTOR) OK: Go to next step
34. CHECK FOR SHORT IN CAN BUS WIRES (NO. 8 JUNCTION CONNECTOR - CERTIFICATION ECU) Disconnect the E76 No. 8 junction connector connector. Measure the resistance according to the value(s) in the table below. RESULT Tester Connection Switch Condition Measured Resistance Proceed to E76-2 (CANH) - E76-13 (CANL) Engine switch off 1 ohms or higher OK E76-2 (CANH) - E76-13 (CANL) Engine switch off Below 1 ohms NG E76-2 (CANH) - E22-4 (CG) Engine switch off 1 ohms or higher OK E76-13 (CANL) - E22-4 (CG) Engine switch off 1 ohms or higher OK E76-2 (CANH) - E22-4 (CG) Engine switch off Below 1 ohms NG E76-13 (CANL) - E22-4 (CG) Engine switch off Below 1 ohms NG E76-2 (CANH) - E22-16 (BAT) Engine switch off 1 ohms or higher OK E76-13 (CANL) - E22-16 (BAT) Engine switch off 1 ohms or higher OK E76-2 (CANH) - E22-16 (BAT) Engine switch off Below 1 ohms NG E76-13 (CANL) - E22-16 (BAT) Engine switch off Below 1 ohms NG NG --> See step 51 OK: Go to next step
35. CHECK FOR SHORT IN CAN BUS WIRES (NO. 8 JUNCTION CONNECTOR - POSITION CONTROL ECU AND SWITCH) Measure the resistance according to the value(s) in the table below. RESULT Tester Connection Switch Condition Measured Resistance Proceed to E76-4 (CANH) - E76-15 (CANL) Engine switch off 1 ohms or higher OK E76-4 (CANH) - E76-15 (CANL) Engine switch off Below 1 ohms NG E76-4 (CANH) - E22-4 (CG) Engine switch off 1 ohms or higher OK E76-15 (CANL) - E22-4 (CG) Engine switch off 1 ohms or higher OK E76-4 (CANH) - E22-4 (CG) Engine switch off Below 1 ohms NG E76-15 (CANL) - E22-4 (CG) Engine switch off Below 1 ohms NG E76-4 (CANH) - E22-16 (BAT) Engine switch off 1 ohms or higher OK E76-15 (CANL) - E22-16 (BAT) Engine switch off 1 ohms or higher OK E76-4 (CANH) - E22-16 (BAT) Engine switch off Below 1 ohms NG E76-15 (CANL) - E22-16 (BAT) Engine switch off Below 1 ohms NG NG --> See step 53 OK: Go to next step
36. CHECK FOR SHORT IN CAN BUS WIRES (NO. 8 JUNCTION CONNECTOR - MULTIPLEX TILT AND TELESCOPIC ECU) Measure the resistance according to the value(s) in the table below. RESULT Tester Connection Switch Condition Measured Resistance Proceed to E76-3 (CANH) - E76-14 (CANL) Engine switch off 1 ohms or higher OK E76-3 (CANH) - E76-14 (CANL) Engine switch off Below 1 ohms NG E76-3 (CANH) - E22-4 (CG) Engine switch off 1 ohms or higher OK E76-14 (CANL) - E22-4 (CG) Engine switch off 1 ohms or higher OK E76-3 (CANH) - E22-4 (CG) Engine switch off Below 1 ohms NG E76-14 (CANL) - E22-4 (CG) Engine switch off Below 1 ohms NG E76-3 (CANH) - E22-16 (BAT) Engine switch off 1 ohms or higher OK E76-14 (CANL) - E22-16 (BAT) Engine switch off 1 ohms or higher OK E76-3 (CANH) - E22-16 (BAT) Engine switch off Below 1 ohms NG E76-14 (CANL) - E22-16 (BAT) Engine switch off Below 1 ohms NG NG --> See step 55 OK: Go to next step
37. CHECK FOR SHORT IN CAN BUS WIRES (NO. 8 JUNCTION CONNECTOR - OUTER MIRROR CONTROL ECU) Measure the resistance according to the value(s) in the table below. RESULT Tester Connection Switch Condition Measured Resistance Proceed to E76-5 (CANH) - E76-16 (CANL) Engine switch off 1 ohms or higher OK E76-5 (CANH) - E76-16 (CANL) Engine switch off Below 1 ohms NG E76-5 (CANH) - E22-4 (CG) Engine switch off 1 ohms or higher OK E76-16 (CANL) - E22-4 (CG) Engine switch off 1 ohms or higher OK E76-5 (CANH) - E22-4 (CG) Engine switch off Below 1 ohms NG E76-16 (CANL) - E22-4 (CG) Engine switch off Below 1 ohms NG E76-5 (CANH) - E22-16 (BAT) Engine switch off 1 ohms or higher OK E76-16 (CANL) - E22-16 (BAT) Engine switch off 1 ohms or higher OK E76-5 (CANH) - E22-16 (BAT) Engine switch off Below 1 ohms NG E76-16 (CANL) - E22-16 (BAT) Engine switch off Below 1 ohms NG NG --> See step 57 OK: Go to next step
38. CHECK FOR SHORT IN CAN BUS WIRES (NO. 8 JUNCTION CONNECTOR - MAIN BODY ECU) Measure the resistance according to the value(s) in the table below. RESULT Tester Connection Switch Condition Measured Resistance Proceed to E76-6 (CANH) - E76-17 (CANL) Engine switch off 1 ohms or higher OK E76-6 (CANH) - E76-17 (CANL) Engine switch off Below 1 ohms NG E76-6 (CANH) - E22-4 (CG) Engine switch off 1 ohms or higher OK E76-17 (CANL) - E22-4 (CG) Engine switch off 1 ohms or higher OK E76-6 (CANH) - E22-4 (CG) Engine switch off Below 1 ohms NG E76-17 (CANL) - E22-4 (CG) Engine switch off Below 1 ohms NG E76-6 (CANH) - E22-16 (BAT) Engine switch off 1 ohms or higher OK E76-17 (CANL) - E22-16 (BAT) Engine switch off 1 ohms or higher OK E76-6 (CANH) - E22-16 (BAT) Engine switch off Below 1 ohms NG E76-17 (CANL) - E22-16 (BAT) Engine switch off Below 1 ohms NG NG --> See step 59 OK --> REPAIR OR REPLACE NO. 8 JUNCTION CONNECTOR
39. CONNECT CONNECTOR Reconnect the E70 No. 10 junction connector connector. NEXT: Go to next step
40. CHECK FOR SHORT IN CAN BUS WIRES (COMBINATION METER) Disconnect the E77 combination meter connector. Measure the resistance according to the value(s) in the table below. RESULT Tester Connection Switch Condition Measured Resistance Proceed to E77-37 (MPX+) - E77-38 (MPX-) Engine switch off 1 ohms or higher OK E77-37 (MPX+) - E77-38 (MPX-) Engine switch off Below 1 ohms NG E77-37 (MPX+) - E22-4 (CG) Engine switch off 1 ohms or higher OK E77-38 (MPX-) - E22-4 (CG) Engine switch off 1 ohms or higher OK E77-37 (MPX+) - E22-4 (CG) Engine switch off Below 1 ohms NG E77-38 (MPX-) - E22-4 (CG) Engine switch off Below 1 ohms NG E77-37 (MPX+) - E22-16 (BAT) Engine switch off 1 ohms or higher OK E77-38 (MPX-) - E22-16 (BAT) Engine switch off 1 ohms or higher OK E77-37 (MPX+) - E22-16 (BAT) Engine switch off Below 1 ohms NG E77-38 (MPX-) - E22-16 (BAT) Engine switch off Below 1 ohms NG NG --> REPAIR OR REPLACE CAN MAIN WIRE CONNECTED TO COMBINATION METER (MPX+, MPX-) OK --> See step 63
41. CONNECT CONNECTOR Reconnect the E73 No. 9 junction connector connector. NEXT: Go to next step
42. CHECK FOR SHORT IN CAN BUS WIRES (BUS BUFFER ECU) Disconnect the P5 bus buffer ECU connector. Measure the resistance according to the value(s) in the table below. RESULT Tester Connection Switch Condition Measured Resistance Proceed to P5-1 (CANP) - P5-2 (CANN) Engine switch off 1 ohms or higher OK P5-1 (CANP) - P5-2 (CANN) Engine switch off Below 1 ohms NG P5-1 (CANP) - E22-4 (CG) Engine switch off 1 ohms or higher OK P5-2 (CANN) - E22-4 (CG) Engine switch off 1 ohms or higher OK P5-1 (CANP) - E22-4 (CG) Engine switch off Below 1 ohms NG P5-2 (CANN) - E22-4 (CG) Engine switch off Below 1 ohms NG P5-1 (CANP) - E22-16 (BAT) Engine switch off 1 ohms or higher OK P5-2 (CANN) - E22-16 (BAT) Engine switch off 1 ohms or higher OK P5-1 (CANP) - E22-16 (BAT) Engine switch off Below 1 ohms NG P5-2 (CANN) - E22-16 (BAT) Engine switch off Below 1 ohms NG NG --> REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO BUS BUFFER ECU (CANP, CANN) OK --> See step 64
43. CONNECT CONNECTOR Reconnect the E73 No. 9 junction connector connector. NEXT: Go to next step
44. CHECK FOR SHORT IN CAN BUS WIRES (WINDSHIELD WIPER ECU) Disconnect the E90 windshield wiper ECU connector. Measure the resistance according to the value(s) in the table below. RESULT Tester Connection Switch Condition Measured Resistance Proceed to E90-6 (CANH) - E90-5 (CANL) Engine switch off 1 ohms or higher OK E90-6 (CANH) - E90-5 (CANL) Engine switch off Below 1 ohms NG E90-6 (CANH) - E22-4 (CG) Engine switch off 1 ohms or higher OK E90-5 (CANL) - E22-4 (CG) Engine switch off 1 ohms or higher OK E90-6 (CANH) - E22-4 (CG) Engine switch off Below 1 ohms NG E90-5 (CANL) - E22-4 (CG) Engine switch off Below 1 ohms NG E90-6 (CANH) - E22-16 (BAT) Engine switch off 1 ohms or higher OK E90-5 (CANL) - E22-16 (BAT) Engine switch off 1 ohms or higher OK E90-6 (CANH) - E22-16 (BAT) Engine switch off Below 1 ohms NG E90-5 (CANL) - E22-16 (BAT) Engine switch off Below 1 ohms NG NG --> REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO WINDSHIELD WIPER ECU (CANH, CANL) OK --> See step 65
45. CONNECT CONNECTOR Reconnect the L31 No. 2 CAN junction connector connector. NEXT: Go to next step
46. CHECK FOR SHORT IN CAN BUS WIRES (TIRE PRESSURE WARNING ECU) Disconnect the L10 tire pressure warning ECU connector. Measure the resistance according to the value(s) in the table below. RESULT Tester Connection Switch Condition Measured Resistance Proceed to L10-6 (CANP) - L10-12 (CANN) Engine switch off 1 ohms or higher OK L10-6 (CANP) - L10-12 (CANN) Engine switch off Below 1 ohms NG L10-6 (CANP) - E22-4 (CG) Engine switch off 1 ohms or higher OK L10-12 (CANN) - E22-4 (CG) Engine switch off 1 ohms or higher OK L10-6 (CANP) - E22-4 (CG) Engine switch off Below 1 ohms NG L10-12 (CANN) - E22-4 (CG) Engine switch off Below 1 ohms NG L10-6 (CANP) - E22-16 (BAT) Engine switch off 1 ohms or higher OK L10-12 (CANN) - E22-16 (BAT) Engine switch off 1 ohms or higher OK L10-6 (CANP) - E22-16 (BAT) Engine switch off Below 1 ohms NG L10-12 (CANN) - E22-16 (BAT) Engine switch off Below 1 ohms NG NG --> REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO TIRE PRESSURE WARNING ECU (CANP, CANN) OK --> See step 66
47. CONNECT CONNECTOR Reconnect the L45 No. 2 CAN junction connector connector. NEXT: Go to next step
48. CHECK FOR SHORT IN CAN BUS WIRES (POWER BACK DOOR UNIT) Disconnect the L36 power back door unit (power back door ECU) connector. Measure the resistance according to the value(s) in the table below. RESULT Tester Connection Switch Condition Measured Resistance Proceed to L36-6 (MPX1) - L36-5 (MPX2) Engine switch off 1 ohms or higher OK L36-6 (MPX1) - L36-5 (MPX2) Engine switch off Below 1 ohms NG L36-6 (MPX1) - E22-4 (CG) Engine switch off 1 ohms or higher OK L36-5 (MPX2) - E22-4 (CG) Engine switch off 1 ohms or higher OK L36-6 (MPX1) - E22-4 (CG) Engine switch off Below 1 ohms NG L36-5 (MPX2) - E22-4 (CG) Engine switch off Below 1 ohms NG L36-6 (MPX1) - E22-16 (BAT) Engine switch off 1 ohms or higher OK L36-5 (MPX2) - E22-16 (BAT) Engine switch off 1 ohms or higher OK L36-6 (MPX1) - E22-16 (BAT) Engine switch off Below 1 ohms NG L36-5 (MPX2) - E22-16 (BAT) Engine switch off Below 1 ohms NG NG --> REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO POWER BACK DOOR UNIT (POWER BACK DOOR ECU) (MPX1, MPX2) OK --> See step 67
49. CONNECT CONNECTOR Reconnect the L46 No. 2 CAN junction connector connector. NEXT: Go to next step
50. CHECK FOR SHORT IN CAN BUS WIRES (NO. 2 MAIN BODY ECU) Disconnect the L33 No. 2 main body ECU connector. Measure the resistance according to the value(s) in the table below. RESULT Tester Connection Switch Condition Measured Resistance Proceed to L33-11 (MPX+) - L33-12 (MPX-) Engine switch off 1 ohms or higher OK L33-11 (MPX+) - L33-12 (MPX-) Engine switch off Below 1 ohms NG L33-11 (MPX+) - E22-4 (CG) Engine switch off 1 ohms or higher OK L33-12 (MPX-) - E22-4 (CG) Engine switch off 1 ohms or higher OK L33-11 (MPX+) - E22-4 (CG) Engine switch off Below 1 ohms NG L33-12 (MPX-) - E22-4 (CG) Engine switch off Below 1 ohms NG L33-11 (MPX+) - E22-16 (BAT) Engine switch off 1 ohms or higher OK L33-12 (MPX-) - E22-16 (BAT) Engine switch off 1 ohms or higher OK L33-11 (MPX+) - E22-16 (BAT) Engine switch off Below 1 ohms NG L33-12 (MPX-) - E22-16 (BAT) Engine switch off Below 1 ohms NG NG --> REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO NO. 2 MAIN BODY ECU (MPX+, MPX-) OK --> See step 68
51. CONNECT CONNECTOR Reconnect the E76 No. 8 junction connector connector. NEXT: Go to next step
52. CHECK FOR SHORT IN CAN BUS WIRES (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)) Disconnect the E29 certification ECU (smart key ECU) connector. Measure the resistance according to the value(s) in the table below. RESULT Tester Connection Switch Condition Measured Resistance Proceed to E29-27 (CANH) - E29-28 (CANL) Engine switch off 1 ohms or higher OK E29-27 (CANH) - E29-28 (CANL) Engine switch off Below 1 ohms NG E29-27 (CANH) - E22-4 (CG) Engine switch off 1 ohms or higher OK E29-28 (CANL) - E22-4 (CG) Engine switch off 1 ohms or higher OK E29-27 (CANH) - E22-4 (CG) Engine switch off Below 1 ohms NG E29-28 (CANL) - E22-4 (CG) Engine switch off Below 1 ohms NG E29-27 (CANH) - E22-16 (BAT) Engine switch off 1 ohms or higher OK E29-28 (CANL) - E22-16 (BAT) Engine switch off 1 ohms or higher OK E29-27 (CANH) - E22-16 (BAT) Engine switch off Below 1 ohms NG E29-28 (CANL) - E22-16 (BAT) Engine switch off Below 1 ohms NG NG --> REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) (CANH, CANL) OK --> See step 69
53. CONNECT CONNECTOR Reconnect the E76 No. 8 junction connector connector. NEXT: Go to next step
54. CHECK FOR SHORT IN CAN BUS WIRES (POSITION CONTROL ECU AND SWITCH) Disconnect the C15 position control ECU and switch connector. Measure the resistance according to the value(s) in the table below. RESULT Tester Connection Switch Condition Measured Resistance Proceed to C15-5 (MPX1) - C15-1 (MPX2) Engine switch off 1 ohms or higher OK C15-5 (MPX1) - C15-1 (MPX2) Engine switch off Below 1 ohms NG C15-5 (MPX1) - E22-4 (CG) Engine switch off 1 ohms or higher OK C15-1 (MPX2) - E22-4 (CG) Engine switch off 1 ohms or higher OK C15-5 (MPX1) - E22-4 (CG) Engine switch off Below 1 ohms NG C15-1 (MPX2) - E22-4 (CG) Engine switch off Below 1 ohms NG C15-5 (MPX1) - E22-16 (BAT) Engine switch off 1 ohms or higher OK C15-1 (MPX2) - E22-16 (BAT) Engine switch off 1 ohms or higher OK C15-5 (MPX1) - E22-16 (BAT) Engine switch off Below 1 ohms NG C15-1 (MPX2) - E22-16 (BAT) Engine switch off Below 1 ohms NG NG --> REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO POSITION CONTROL ECU AND SWITCH (MPX1, MPX2) OK --> See step 70
55. CONNECT CONNECTOR Reconnect the E76 No. 8 junction connector connector. NEXT: Go to next step
56. CHECK FOR SHORT IN CAN BUS WIRES (MULTIPLEX TILT AND TELESCOPIC ECU) Disconnect the E27 multiplex tilt and telescopic ECU connector. Measure the resistance according to the value(s) in the table below. RESULT Tester Connection Switch Condition Measured Resistance Proceed to E27-5 (CANP) - E27-14 (CANN) Engine switch off 1 ohms or higher OK E27-5 (CANP) - E27-14 (CANN) Engine switch off Below 1 ohms NG E27-5 (CANP) - E22-4 (CG) Engine switch off 1 ohms or higher OK E27-14 (CANN) - E22-4 (CG) Engine switch off 1 ohms or higher OK E27-5 (CANP) - E22-4 (CG) Engine switch off Below 1 ohms NG E27-14 (CANN) - E22-4 (CG) Engine switch off Below 1 ohms NG E27-5 (CANP) - E22-16 (BAT) Engine switch off 1 ohms or higher OK E27-14 (CANN) - E22-16 (BAT) Engine switch off 1 ohms or higher OK E27-5 (CANP) - E22-16 (BAT) Engine switch off Below 1 ohms NG E27-14 (CANN) - E22-16 (BAT) Engine switch off Below 1 ohms NG NG --> REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO MULTIPLEX TILT AND TELESCOPIC ECU (CANP, CANN) OK --> See step 71
57. CONNECT CONNECTOR Reconnect the E76 No. 8 junction connector connector. NEXT: Go to next step
58. CHECK FOR SHORT IN CAN BUS WIRES (OUTER MIRROR CONTROL ECU) Disconnect the I18 outer mirror control ECU connector. Measure the resistance according to the value(s) in the table below. RESULT Tester Connection Switch Condition Measured Resistance Proceed to I18-1 (CANH) - I18-21 (CANL) Engine switch off 1 ohms or higher OK I18-1 (CANH) - I18-21 (CANL) Engine switch off Below 1 ohms NG I18-1 (CANH) - E22-4 (CG) Engine switch off 1 ohms or higher OK I18-21 (CANL) - E22-4 (CG) Engine switch off 1 ohms or higher OK I18-1 (CANH) - E22-4 (CG) Engine switch off Below 1 ohms NG I18-21 (CANL) - E22-4 (CG) Engine switch off Below 1 ohms NG I18-1 (CANH) - E22-16 (BAT) Engine switch off 1 ohms or higher OK I18-21 (CANL) - E22-16 (BAT) Engine switch off 1 ohms or higher OK I18-1 (CANH) - E22-16 (BAT) Engine switch off Below 1 ohms NG I18-21 (CANL) - E22-16 (BAT) Engine switch off Below 1 ohms NG NG --> REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO OUTER MIRROR CONTROL ECU (CANH, CANL) OK --> See step 72
59. CONNECT CONNECTOR Reconnect the E76 No. 8 junction connector connector. NEXT: Go to next step
60. CHECK FOR SHORT IN CAN BUS WIRES (MAIN BODY ECU) Disconnect the E3 main body ECU (cowl side junction block LH) connector. Measure the resistance according to the value(s) in the table below. RESULT Tester Connection Switch Condition Measured Resistance Proceed to E3-16 (CANP) - E3-15 (CANN) Engine switch off 1 ohms or higher OK E3-16 (CANP) - E3-15 (CANN) Engine switch off Below 1 ohms NG E3-16 (CANP) - E22-4 (CG) Engine switch off 1 ohms or higher OK E3-15 (CANN) - E22-4 (CG) Engine switch off 1 ohms or higher OK E3-16 (CANP) - E22-4 (CG) Engine switch off Below 1 ohms NG E3-15 (CANN) - E22-4 (CG) Engine switch off Below 1 ohms NG E3-16 (CANP) - E22-16 (BAT) Engine switch off 1 ohms or higher OK E3-15 (CANN) - E22-16 (BAT) Engine switch off 1 ohms or higher OK E3-16 (CANP) - E22-16 (BAT) Engine switch off Below 1 ohms NG E3-15 (CANN) - E22-16 (BAT) Engine switch off Below 1 ohms NG NG --> REPAIR OR REPLACE CAN MAIN WIRE CONNECTED TO MAIN BODY ECU (COWL SIDE JUNCTION BLOCK LH) (CANP, CANN) OK --> REPLACE MAIN BODY ECU (COWL SIDE JUNCTION BLOCK LH)
61. CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - BATTERY AND BODY GROUND) Connect the cable to the negative (-) battery terminal. NOTE: When disconnecting the cable, some systems need to be initialized after the cable is reconnected. Refer to «INITIALIZATION». Disconnect the 2A, 2D and E3 main body ECU (cowl side junction block LH) connectors. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 2D-62 (GND2) - Body ground Always Below 1 ohms E3-1 (GND3) - Body ground Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition 2A-1 (ALTB) - Body ground Always 11 to 14 V NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> REPLACE MAIN BODY ECU (COWL SIDE JUNCTION BLOCK LH)
62. REPLACE COMBINATION METER ASSEMBLY. Refer to «REMOVAL»
63. REPLACE COMBINATION METER ASSEMBLY. Refer to «REMOVAL»
64. REPLACE BUS BUFFER ECU. Refer to «REMOVAL»
65. REPLACE WINDSHIELD WIPER ECU. Refer to «REMOVAL»
66. REPLACE TIRE PRESSURE WARNING ECU. Refer to «REMOVAL»
67. REPLACE POWER BACK DOOR UNIT ASSEMBLY (POWER BACK DOOR ECU). Refer to «REMOVAL»
68. REPLACE NO. 2 MAIN BODY ECU. Refer to «REMOVAL»
69. REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY). Refer to «REMOVAL»
70. REPLACE POSITION CONTROL ECU AND SWITCH ASSEMBLY. Refer to «REMOVAL»
71. REPLACE MULTIPLEX TILT AND TELESCOPIC ECU. Refer to «REMOVAL»
72. REPLACE OUTER MIRROR CONTROL ECU ASSEMBLY. Refer to «REMOVAL»

If 2 or more DTCs are output during the DTC check, one side of the CAN branch wire may be open (one side of the CANH [branch wire]/CANL [branch wire] of the ECU and/or sensor is open).

1. *1: w/ Dynamic Radar Cruise Control System
2. *2: w/ Wide View Front and Side Monitor System

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1. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL Disconnect the cable from the negative (-) battery terminal before measuring the resistances of the main wire and the branch wire. WARNING: Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system. NOTE: w/ Navigation System: After the engine switch is turned off, the HDD navigation system requires approximately 6 minutes to record various types of memory and settings. As a result, after turning the engine switch off, wait 6 minutes or more before disconnecting the cable from the negative (-) battery terminal. When disconnecting the cable, some systems need to be initialized after the cable is reconnected. Refer to «INITIALIZATION». NEXT: Go to next step
2. CHECK CAN BUS WIRE (MAIN WIRE FOR DISCONNECTION, BUS LINE FOR SHORT CIRCUIT) Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition Resistance Malfunction E31-13 (CA2H) - E31-12 (CA2L) Engine switch off 54 to 69 ohms Below 53 ohms: Short in line 70 ohms or higher: Open in CAN main bus line E31-13 (CA2H) - E31-2 (BATT) Engine switch off 6 kohms or higher Below 6 kohms: +B short E31-12 (CA2L) - E31-2 (BATT) Engine switch off 6 kohms or higher Below 6 kohms: +B short E31-13 (CA2H) - E31-4 (GND) Engine switch off 200 ohms or higher Below 200 ohms: Ground short E31-12 (CA2L) - E31-4 (GND) Engine switch off 200 ohms or higher Below 200 ohms: Ground short RESULT Result Proceed to NG - Open in CAN main bus line A NG - Short in line - +B short - Ground short B OK C C --> See step 60 B --> See step 18 A: Go to next step
3. CHECK FOR OPEN IN MAIN BUS WIRE (NO. 7 CAN JUNCTION CONNECTOR - NETWORK GATEWAY ECU) Disconnect the E74 No. 7 junction connector connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition E74-2 (CANH) - E74-13 (CANL) Engine switch off 108 to 132 ohms NG --> See step 5 OK: Go to next step
4. CHECK FOR OPEN IN CAN BUS MAIN WIRE (NO. 7 JUNCTION CONNECTOR - NO. 1 CAN JUNCTION CONNECTOR) Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition E74-1 (CANH) - E74-12 (CANL) Engine switch off 108 to 132 ohms NG --> See step 14 OK --> REPAIR OR REPLACE NO. 7 JUNCTION CONNECTOR
5. CONNECT CONNECTOR Reconnect the E74 No. 7 junction connector connector. NEXT: Go to next step
6. CHECK FOR OPEN IN CAN BUS MAIN WIRE (NO. 6 JUNCTION CONNECTOR - NO. 7 JUNCTION BLOCK) Disconnect the F21 No. 6 junction connector connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition F21-2 (CANH) - F21-13 (CANL) Engine switch off 108 to 132 ohms NG --> REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (NO. 6 JUNCTION CONNECTOR - NO. 7 JUNCTION CONNECTOR) OK: Go to next step
7. CHECK FOR OPEN IN CAN BUS MAIN WIRE (NO. 6 JUNCTION CONNECTOR - NETWORK GATEWAY ECU) Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition F21-3 (CANH) - F21-14 (CANL) Engine switch off 108 to 132 ohms NG --> See step 8 OK --> REPAIR OR REPLACE NO. 6 JUNCTION CONNECTOR
8. CONNECT CONNECTOR Reconnect the F21 No. 6 junction connector connector. NEXT: Go to next step
9. CHECK FOR OPEN IN CAN BUS MAIN WIRE (NO. 5 JUNCTION CONNECTOR - NO. 6 JUNCTION CONNECTOR) Disconnect the E68 No. 5 junction connector connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition E68-2 (CANH) - E68-13 (CANL) Engine switch off 108 to 132 ohms NG --> REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (NO. 5 JUNCTION CONNECTOR - NO. 6 JUNCTION CONNECTOR) OK: Go to next step
10. CHECK FOR OPEN IN CAN BUS MAIN WIRE (NO. 5 JUNCTION CONNECTOR - NETWORK GATEWAY ECU) Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition E68-1 (CANH) - E68-12 (CANL) Engine switch off 108 to 132 ohms NG --> See step 11 OK --> REPAIR OR REPLACE NO. 5 JUNCTION CONNECTOR
11. CONNECT CONNECTOR Reconnect the E68 No. 5 junction connector connector. NEXT: Go to next step
12. CHECK FOR OPEN IN CAN BUS MAIN WIRE (NO. 4 JUNCTION CONNECTOR - NO. 5 JUNCTION CONNECTOR) Disconnect the E71 No. 4 junction connector connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition E71-1 (CANH) - E71-12 (CANL) Engine switch off 108 to 132 ohms NG --> REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (NO. 4 JUNCTION CONNECTOR - NO. 5 JUNCTION CONNECTOR) OK: Go to next step
13. CHECK FOR OPEN IN CAN BUS MAIN WIRE (NO. 4 JUNCTION CONNECTOR - NETWORK GATEWAY ECU) Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition E71-2 (CANH) - E71-13 (CANL) Engine switch off 108 to 132 ohms NG --> See step 16 OK --> REPAIR OR REPLACE NO. 4 CAN JUNCTION CONNECTOR
14. CONNECT CONNECTOR Reconnect the E74 No. 7 junction connector connector. NEXT: Go to next step
15. CHECK FOR OPEN IN CAN BUS MAIN WIRE (NO. 1 CAN JUNCTION CONNECTOR - NO. 7 JUNCTION CONNECTOR) Disconnect the K29 No. 1 CAN junction connector connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition K29-1 (CANH) - K29-2 (CANL) Engine switch off 108 to 132 ohms NG --> REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (NO. 1 CAN JUNCTION CONNECTOR - NO. 7 JUNCTION CONNECTOR) OK --> REPAIR OR REPLACE NO. 1 CAN JUNCTION CONNECTOR
16. CONNECT CONNECTOR Reconnect the E71 No. 4 junction connector connector. NEXT: Go to next step
17. CHECK FOR OPEN IN CAN BUS MAIN WIRE (NETWORK GATEWAY ECU - NO. 4 JUNCTION CONNECTOR) Disconnect the E31 network gateway ECU connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition E31-13 (CA2H) - E31-12 (CA2L) Engine switch off 108 to 132 ohms NG --> REPAIR OR REPLACE CAN MAIN WIRE CONNECTED TO NETWORK GATEWAY ECU (NETWORK GATEWAY ECU - NO. 4 JUNCTION CONNECTOR) OK --> See step 69
18. CHECK FOR SHORT IN CAN BUS WIRES (NO. 7 JUNCTION CONNECTOR SIDE) Disconnect the E74 No. 7 junction connector connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition E31-13 (CA2H) - E31-12 (CA2L) Engine switch off 108 to 132 ohms E31-13 (CA2H) - E22-4 (CG) Engine switch off 200 ohms or higher E31-12 (CA2L) - E22-4 (CG) Engine switch off 200 ohms or higher E31-13 (CA2H) - E22-16 (BAT) Engine switch off 6 kohms or higher E31-12 (CA2L) - E22-16 (BAT) Engine switch off 6 kohms or higher NG --> See step 23 OK: Go to next step
19. CHECK FOR SHORT IN CAN BUS WIRES (NO. 7 JUNCTION CONNECTOR - STEERING CONTROL ECU) Measure the resistance according to the value(s) in the table below. RESULT Tester Connection Switch Condition Measured Resistance Proceed to E74-3 (CANH) - E74-14 (CANL) Engine switch off 1 ohms or higher OK E74-3 (CANH) - E74-14 (CANL) Engine switch off Below 1 ohms NG E74-3 (CANH) - E22-4 (CG) Engine switch off 1 ohms or higher OK E74-14 (CANL) - E22-4 (CG) Engine switch off 1 ohms or higher OK E74-3 (CANH) - E22-4 (CG) Engine switch off Below 1 ohms NG E74-14 (CANL) - E22-4 (CG) Engine switch off Below 1 ohms NG E74-3 (CANH) - E22-16 (BAT) Engine switch off 1 ohms or higher OK E74-14 (CANL) - E22-16 (BAT) Engine switch off 1 ohms or higher OK E74-3 (CANH) - E22-16 (BAT) Engine switch off Below 1 ohms NG E74-14 (CANL) - E22-16 (BAT) Engine switch off Below 1 ohms NG NG --> See step 37 OK: Go to next step
20. CHECK FOR SHORT IN CAN BUS WIRES (NO. 7 JUNCTION CONNECTOR - STEERING ANGLE SENSOR) Measure the resistance according to the value(s) in the table below. RESULT Tester Connection Switch Condition Measured Resistance Proceed to E74-4 (CANH) - E74-15 (CANL) Engine switch off 1 ohms or higher OK E74-4 (CANH) - E74-15 (CANL) Engine switch off Below 1 ohms NG E74-4 (CANH) - E22-4 (CG) Engine switch off 1 ohms or higher OK E74-15 (CANL) - E22-4 (CG) Engine switch off 1 ohms or higher OK E74-4 (CANH) - E22-4 (CG) Engine switch off Below 1 ohms NG E74-15 (CANL) - E22-4 (CG) Engine switch off Below 1 ohms NG E74-4 (CANH) - E22-16 (BAT) Engine switch off 1 ohms or higher OK E74-15 (CANL) - E22-16 (BAT) Engine switch off 1 ohms or higher OK E74-4 (CANH) - E22-16 (BAT) Engine switch off Below 1 ohms NG E74-15 (CANL) - E22-16 (BAT) Engine switch off Below 1 ohms NG NG --> See step 39 OK: Go to next step
21. CHECK FOR SHORT IN CAN BUS WIRES (NO. 7 JUNCTION CONNECTOR - SKID CONTROL ECU) Measure the resistance according to the value(s) in the table below. RESULT Tester Connection Switch Condition Measured Resistance Proceed to E74-5 (CANH) - E74-16 (CANL) Engine switch off 1 ohms or higher OK E74-5 (CANH) - E74-16 (CANL) Engine switch off Below 1 ohms NG E74-5 (CANH) - E22-4 (CG) Engine switch off 1 ohms or higher OK E74-16 (CANL) - E22-4 (CG) Engine switch off 1 ohms or higher OK E74-5 (CANH) - E22-4 (CG) Engine switch off Below 1 ohms NG E74-16 (CANL) - E22-4 (CG) Engine switch off Below 1 ohms NG E74-5 (CANH) - E22-16 (BAT) Engine switch off 1 ohms or higher OK E74-16 (CANL) - E22-16 (BAT) Engine switch off 1 ohms or higher OK E74-5 (CANH) - E22-16 (BAT) Engine switch off Below 1 ohms NG E74-16 (CANL) - E22-16 (BAT) Engine switch off Below 1 ohms NG NG --> See step 41 OK: Go to next step
22. CHECK FOR SHORT IN CAN BUS WIRES (NO. 7 JUNCTION CONNECTOR - NO. 1 CAN JUNCTION CONNECTOR) Measure the resistance according to the value(s) in the table below. RESULT Tester Connection Switch Condition Measured Resistance Result E74-1 (CANH) - E74-12 (CANL) Engine switch off 1 ohms or higher OK E74-1 (CANH) - E74-12 (CANL) Engine switch off Below 1 ohms NG E74-1 (CANH) - E22-4 (CG) Engine switch off 1 ohms or higher OK E74-12 (CANL) - E22-4 (CG) Engine switch off 1 ohms or higher OK E74-1 (CANH) - E22-4 (CG) Engine switch off Below 1 ohms NG E74-12 (CANL) - E22-4 (CG) Engine switch off Below 1 ohms NG E74-1 (CANH) - E22-16 (BAT) Engine switch off 1 ohms or higher OK E74-12 (CANL) - E22-16 (BAT) Engine switch off 1 ohms or higher OK E74-1 (CANH) - E22-16 (BAT) Engine switch off Below 1 ohms NG E74-12 (CANL) - E22-16 (BAT) Engine switch off Below 1 ohms NG NG --> See step 43 OK --> REPAIR OR REPLACE NO. 7 JUNCTION CONNECTOR
23. CONNECT CONNECTOR Reconnect the E74 No. 7 junction connector connector. NEXT: Go to next step
24. CHECK FOR SHORT IN CAN BUS WIRES (NO. 7 JUNCTION CONNECTOR - NO. 6 JUNCTION CONNECTOR) Disconnect the F21 No. 6 junction connector connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition F21-2 (CANH) - F21-13 (CANL) Engine switch off 108 to 132 ohms F21-2 (CANH) - E22-4 (CG) Engine switch off 200 ohms or higher F21-13 (CANL) - E22-4 (CG) Engine switch off 200 ohms or higher F21-2 (CANH) - E22-16 (BAT) Engine switch off 6 kohms or higher F21-13 (CANL) - E22-16 (BAT) Engine switch off 6 kohms or higher NG --> REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (NO. 7 JUNCTION CONNECTOR - NO. 6 JUNCTION CONNECTOR) OK: Go to next step
25. CHECK FOR SHORT IN CAN BUS WIRES (NO. 6 JUNCTION CONNECTOR SIDE) Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition E31-13 (CA2H) - E31-12 (CA2L) Engine switch off 108 to 132 ohms E31-13 (CA2H) - E22-4 (CG) Engine switch off 200 ohms or higher E31-12 (CA2L) - E22-4 (CG) Engine switch off 200 ohms or higher E31-13 (CA2H) - E22-16 (BAT) Engine switch off 6 kohms or higher E31-12 (CA2L) - E22-16 (BAT) Engine switch off 6 kohms or higher RESULT Result Proceed to OK A NG (w/ Wide View Front and Side Monitor System) B NG (w/o Wide View Front and Side Monitor System) C C --> See step 27 B --> See step 26 A --> REPAIR OR REPLACE NO. 6 JUNCTION CONNECTOR
26. CHECK FOR SHORT IN CAN BUS WIRES (NO. 6 JUNCTION CONNECTOR - PARKING ASSIST ECU) Measure the resistance according to the value(s) in the table below. RESULT Tester Connection Switch Condition Measured Resistance Proceed to F21-1 (CANH) - F21-12 (CANL) Engine switch off 1 ohms or higher OK F21-1 (CANH) - F21-12 (CANL) Engine switch off Below 1 ohms NG F21-1 (CANH) - E22-4 (CG) Engine switch off 1 ohms or higher OK F21-12 (CANL) - E22-4 (CG) Engine switch off 1 ohms or higher OK F21-1 (CANH) - E22-4 (CG) Engine switch off Below 1 ohms NG F21-12 (CANL) - E22-4 (CG) Engine switch off Below 1 ohms NG F21-1 (CANH) - E22-16 (BAT) Engine switch off 1 ohms or higher OK F21-12 (CANL) - E22-16 (BAT) Engine switch off 1 ohms or higher OK F21-1 (CANH) - E22-16 (BAT) Engine switch off Below 1 ohms NG F21-12 (CANL) - E22-16 (BAT) Engine switch off Below 1 ohms NG NG --> See step 48 OK --> REPAIR OR REPLACE NO. 6 JUNCTION CONNECTOR
27. CONNECT CONNECTOR Reconnect the F21 No. 6 junction connector connector. NEXT: Go to next step
28. CHECK FOR SHORT IN CAN BUS WIRES (NO. 6 JUNCTION CONNECTOR - NO. 5 JUNCTION CONNECTOR) Disconnect the E68 No. 5 junction connector connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition E68-2 (CANH) - E68-13 (CANL) Engine switch off 108 to 132 ohms E68-2 (CANH) - E22-4 (CG) Engine switch off 200 ohms or higher E68-13 (CANL) - E22-4 (CG) Engine switch off 200 ohms or higher E68-2 (CANH) - E22-16 (BAT) Engine switch off 6 kohms or higher E68-13 (CANL) - E22-16 (BAT) Engine switch off 6 kohms or higher NG --> REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (NO. 6 JUNCTION CONNECTOR - NO. 5 JUNCTION CONNECTOR) OK: Go to next step
29. CHECK FOR SHORT IN CAN BUS WIRES (NO. 5 JUNCTION CONNECTOR SIDE) Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition E31-13 (CA2H) - E31-12 (CA2L) Engine switch off 108 to 132 ohms E31-13 (CA2H) - E22-4 (CG) Engine switch off 200 ohms or higher E31-12 (CA2L) - E22-4 (CG) Engine switch off 200 ohms or higher E31-13 (CA2H) - E22-16 (BAT) Engine switch off 6 kohms or higher E31-12 (CA2L) - E22-16 (BAT) Engine switch off 6 kohms or higher NG --> See step 33 OK: Go to next step
30. CHECK FOR SHORT IN CAN BUS WIRES (NO. 5 JUNCTION CONNECTOR - SEAT BELT CONTROL ECU) NOTE: For vehicles without the dynamic radar cruise control system, go to "Check for Short in CAN Bus Wires (No. 5 Junction Connector - Yaw Rate Sensor)". Measure the resistance according to the value(s) in the table below. RESULT Tester Connection Switch Condition Measured Resistance Proceed to E68-5 (CANH) - E68-16 (CANL) Engine switch off 1 ohms or higher OK E68-5 (CANH) - E68-16 (CANL) Engine switch off Below 1 ohms NG E68-5 (CANH) - E22-4 (CG) Engine switch off 1 ohms or higher OK E68-16 (CANL) - E22-4 (CG) Engine switch off 1 ohms or higher OK E68-5 (CANH) - E22-4 (CG) Engine switch off Below 1 ohms NG E68-16 (CANL) - E22-4 (CG) Engine switch off Below 1 ohms NG E68-5 (CANH) - E22-16 (BAT) Engine switch off 1 ohms or higher OK E68-16 (CANL) - E22-16 (BAT) Engine switch off 1 ohms or higher OK E68-5 (CANH) - E22-16 (BAT) Engine switch off Below 1 ohms NG E68-16 (CANL) - E22-16 (BAT) Engine switch off Below 1 ohms NG NG --> See step 50 OK: Go to next step
31. CHECK FOR SHORT IN CAN BUS WIRES (NO. 5 JUNCTION CONNECTOR - DISTANCE CONTROL ECU) Measure the resistance according to the value(s) in the table below. RESULT Tester Connection Switch Condition Measured Resistance Proceed to E68-4 (CANH) - E68-15 (CANL) Engine switch off 1 ohms or higher OK E68-4 (CANH) - E68-15 (CANL) Engine switch off Below 1 ohms NG E68-4 (CANH) - E22-4 (CG) Engine switch off 1 ohms or higher OK E68-15 (CANL) - E22-4 (CG) Engine switch off 1 ohms or higher OK E68-4 (CANH) - E22-4 (CG) Engine switch off Below 1 ohms NG E68-15 (CANL) - E22-4 (CG) Engine switch off Below 1 ohms NG E68-4 (CANH) - E22-16 (BAT) Engine switch off 1 ohms or higher OK E68-15 (CANL) - E22-16 (BAT) Engine switch off 1 ohms or higher OK E68-4 (CANH) - E22-16 (BAT) Engine switch off Below 1 ohms NG E68-15 (CANL) - E22-16 (BAT) Engine switch off Below 1 ohms NG NG --> See step 52 OK: Go to next step
32. CHECK FOR SHORT IN CAN BUS WIRES (NO. 5 JUNCTION CONNECTOR - YAW RATE SENSOR) Measure the resistance according to the value(s) in the table below. RESULT Tester Connection Switch Condition Measured Resistance Proceed to E68-3 (CANH) - E68-14 (CANL) Engine switch off 1 ohms or higher OK E68-3 (CANH) - E68-14 (CANL) Engine switch off Below 1 ohms NG E68-3 (CANH) - E22-4 (CG) Engine switch off 1 ohms or higher OK E68-14 (CANL) - E22-4 (CG) Engine switch off 1 ohms or higher OK E68-3 (CANH) - E22-4 (CG) Engine switch off Below 1 ohms NG E68-14 (CANL) - E22-4 (CG) Engine switch off Below 1 ohms NG E68-3 (CANH) - E22-16 (BAT) Engine switch off 1 ohms or higher OK E68-14 (CANL) - E22-16 (BAT) Engine switch off 1 ohms or higher OK E68-3 (CANH) - E22-16 (BAT) Engine switch off Below 1 ohms NG E68-14 (CANL) - E22-16 (BAT) Engine switch off Below 1 ohms NG NG --> See step 54 OK --> REPAIR OR REPLACE NO. 5 JUNCTION CONNECTOR
33. CONNECT CONNECTOR Reconnect the E68 No. 5 junction connector connector. NEXT: Go to next step
34. CHECK FOR SHORT IN CAN BUS WIRES (NO. 5 JUNCTION CONNECTOR - NO. 4 JUNCTION CONNECTOR) Disconnect the E71 No. 4 junction connector connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition E71-1 (CANH) - E71-12 (CANL) Engine switch off 108 to 132 ohms E71-1 (CANH) - E22-4 (CG) Engine switch off 200 ohms or higher E71-12 (CANL) - E22-4 (CG) Engine switch off 200 ohms or higher E71-1 (CANH) - E22-16 (BAT) Engine switch off 6 kohms or higher E71-12 (CANL) - E22-16 (BAT) Engine switch off 6 kohms or higher NG --> REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (NO. 5 JUNCTION CONNECTOR - NO. 4 JUNCTION CONNECTOR) OK: Go to next step
35. CHECK FOR SHORT IN CAN BUS WIRES (NO. 4 JUNCTION CONNECTOR - 4WD CONTROL ECU) Measure the resistance according to the value(s) in the table below. RESULT Tester Connection Switch Condition Measured Resistance Proceed to E71-3 (CANH) - E71-14 (CANL) Engine switch off 1 ohms or higher OK E71-3 (CANH) - E71-14 (CANL) Engine switch off Below 1 ohms NG E71-3 (CANH) - E22-4 (CG) Engine switch off 1 ohms or higher OK E71-14 (CANL) - E22-4 (CG) Engine switch off 1 ohms or higher OK E71-3 (CANH) - E22-4 (CG) Engine switch off Below 1 ohms NG E71-14 (CANL) - E22-4 (CG) Engine switch off Below 1 ohms NG E71-3 (CANH) - E22-16 (BAT) Engine switch off 1 ohms or higher OK E71-14 (CANL) - E22-16 (BAT) Engine switch off 1 ohms or higher OK E71-3 (CANH) - E22-16 (BAT) Engine switch off Below 1 ohms NG E71-14 (CANL) - E22-16 (BAT) Engine switch off Below 1 ohms NG NG --> See step 56 OK: Go to next step
36. CHECK FOR SHORT IN CAN BUS WIRES (NO. 4 JUNCTION CONNECTOR - NETWORK GATEWAY ECU) Measure the resistance according to the value(s) in the table below. RESULT Tester Connection Switch Condition Measured Resistance Proceed to E71-2 (CANH) - E71-13 (CANL) Engine switch off 1 ohms or higher OK E71-2 (CANH) - E71-13 (CANL) Engine switch off Below 1 ohms NG E71-2 (CANH) - E22-4 (CG) Engine switch off 1 ohms or higher OK E71-13 (CANL) - E22-4 (CG) Engine switch off 1 ohms or higher OK E71-2 (CANH) - E22-4 (CG) Engine switch off Below 1 ohms NG E71-13 (CANL) - E22-4 (CG) Engine switch off Below 1 ohms NG E71-2 (CANH) - E22-16 (BAT) Engine switch off 1 ohms or higher OK E71-13 (CANL) - E22-16 (BAT) Engine switch off 1 ohms or higher OK E71-2 (CANH) - E22-16 (BAT) Engine switch off Below 1 ohms NG E71-13 (CANL) - E22-16 (BAT) Engine switch off Below 1 ohms NG NG --> See step 58 OK --> REPAIR OR REPLACE NO. 4 JUNCTION CONNECTOR
37. CONNECT CONNECTOR Reconnect the E74 No. 7 junction connector connector. NEXT: Go to next step
38. CHECK FOR SHORT IN CAN BUS WIRES (STEERING CONTROL ECU) Disconnect the E84 steering control ECU connector. Measure the resistance according to the value(s) in the table below. RESULT Tester Connection Switch Condition Measured Resistance Proceed to E84-9 (CANH) - E84-20 (CANL) Engine switch off 1 ohms or higher OK E84-9 (CANH) - E84-20 (CANL) Engine switch off Below 1 ohms NG E84-9 (CANH) - E22-4 (CG) Engine switch off 1 ohms or higher OK E84-20 (CANL) - E22-4 (CG) Engine switch off 1 ohms or higher OK E84-9 (CANH) - E22-4 (CG) Engine switch off Below 1 ohms NG E84-20 (CANL) - E22-4 (CG) Engine switch off Below 1 ohms NG E84-9 (CANH) - E22-16 (BAT) Engine switch off 1 ohms or higher OK E84-20 (CANL) - E22-16 (BAT) Engine switch off 1 ohms or higher OK E84-9 (CANH) - E22-16 (BAT) Engine switch off Below 1 ohms NG E84-20 (CANL) - E22-16 (BAT) Engine switch off Below 1 ohms NG NG --> REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO STEERING CONTROL ECU (CANH, CANL) OK --> See step 70
39. CONNECT CONNECTOR Reconnect the E74 No. 7 junction connector connector. NEXT: Go to next step
40. CHECK FOR SHORT IN CAN BUS WIRES (STEERING ANGLE SENSOR) Disconnect the E11 steering angle sensor connector. Measure the resistance according to the value(s) in the table below. RESULT Tester Connection Switch Condition Measured Resistance Proceed to E11-10 (CANH) - E11-9 (CANL) Engine switch off 1 ohms or higher OK E11-10 (CANH) - E11-9 (CANL) Engine switch off Below 1 ohms NG E11-10 (CANH) - E22-4 (CG) Engine switch off 1 ohms or higher OK E11-9 (CANL) - E22-4 (CG) Engine switch off 1 ohms or higher OK E11-10 (CANH) - E22-4 (CG) Engine switch off Below 1 ohms NG E11-9 (CANL) - E22-4 (CG) Engine switch off Below 1 ohms NG E11-10 (CANH) - E22-16 (BAT) Engine switch off 1 ohms or higher OK E11-9 (CANL) - E22-16 (BAT) Engine switch off 1 ohms or higher OK E11-10 (CANH) - E22-16 (BAT) Engine switch off Below 1 ohms NG E11-9 (CANL) - E22-16 (BAT) Engine switch off Below 1 ohms NG NG --> REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO STEERING ANGLE SENSOR (CANH, CANL) OK --> See step 61
41. CONNECT CONNECTOR Reconnect the E74 No. 7 junction connector connector. NEXT: Go to next step
42. CHECK FOR SHORT IN CAN BUS WIRES (SKID CONTROL ECU) Disconnect the A24 master cylinder solenoid (skid control ECU) connector. Measure the resistance according to the value(s) in the table below. RESULT Tester Connection Switch Condition Measured Resistance Proceed to A24-11 (CANH) - A24-25 (CANL) Engine switch off 1 ohms or higher OK A24-11 (CANH) - A24-25 (CANL) Engine switch off Below 1 ohms NG A24-11 (CANH) - E22-4 (CG) Engine switch off 1 ohms or higher OK A24-25 (CANL) - E22-4 (CG) Engine switch off 1 ohms or higher OK A24-11 (CANH) - E22-4 (CG) Engine switch off Below 1 ohms NG A24-25 (CANL) - E22-4 (CG) Engine switch off Below 1 ohms NG A24-11 (CANH) - E22-16 (BAT) Engine switch off 1 ohms or higher OK A24-25 (CANL) - E22-16 (BAT) Engine switch off 1 ohms or higher OK A24-11 (CANH) - E22-16 (BAT) Engine switch off Below 1 ohms NG A24-25 (CANL) - E22-16 (BAT) Engine switch off Below 1 ohms NG NG --> REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO MASTER CYLINDER SOLENOID (SKID CONTROL ECU) (CANH, CANL) OK --> See step 62
43. CONNECT CONNECTOR Reconnect the E74 No. 7 junction connector connector. NEXT: Go to next step
44. CHECK FOR SHORT IN CAN BUS WIRES (NO. 1 CAN JUNCTION CONNECTOR - SUSPENSION CONTROL ECU) Disconnect the K41 No. 1 CAN junction connector connector. Measure the resistance according to the value(s) in the table below. RESULT Tester Connection Switch Condition Measured Resistance Proceed to K41-1 (CANH) - K41-2 (CANL) Engine switch off 1 ohms or higher OK K41-1 (CANH) - K41-2 (CANL) Engine switch off Below 1 ohms NG K41-1 (CANH) - E22-4 (CG) Engine switch off 1 ohms or higher OK K41-2 (CANL) - E22-4 (CG) Engine switch off 1 ohms or higher OK K41-1 (CANH) - E22-4 (CG) Engine switch off Below 1 ohms NG K41-2 (CANL) - E22-4 (CG) Engine switch off Below 1 ohms NG K41-1 (CANH) - E22-16 (BAT) Engine switch off 1 ohms or higher OK K41-2 (CANL) - E22-16 (BAT) Engine switch off 1 ohms or higher OK K41-1 (CANH) - E22-16 (BAT) Engine switch off Below 1 ohms NG K41-2 (CANL) - E22-16 (BAT) Engine switch off Below 1 ohms NG NG --> See step 47 OK: Go to next step
45. CONNECT CONNECTOR Reconnect the E74 No. 7 junction connector connector. NEXT: Go to next step
46. CHECK FOR SHORT IN CAN BUS WIRES (NO. 1 CAN JUNCTION CONNECTOR) Measure the resistance according to the value(s) in the table below. RESULT Tester Connection Switch Condition Measured Resistance Proceed to K29-1 (CANH) - K29-2 (CANL) Engine switch off 1 ohms or higher OK K29-1 (CANH) - K29-2 (CANL) Engine switch off Below 1 ohms NG K29-1 (CANH) - E22-4 (CG) Engine switch off 1 ohms or higher OK K29-2 (CANL) - E22-4 (CG) Engine switch off 1 ohms or higher OK K29-1 (CANH) - E22-4 (CG) Engine switch off Below 1 ohms NG K29-2 (CANL) - E22-4 (CG) Engine switch off Below 1 ohms NG K29-1 (CANH) - E22-16 (BAT) Engine switch off 1 ohms or higher OK K29-2 (CANL) - E22-16 (BAT) Engine switch off 1 ohms or higher OK K29-1 (CANH) - E22-16 (BAT) Engine switch off Below 1 ohms NG K29-2 (CANL) - E22-16 (BAT) Engine switch off Below 1 ohms NG NG --> REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO NO. 1 CAN JUNCTION CONNECTOR (CANH, CANL) OK --> REPLACE NO. 1 CAN JUNCTION CONNECTOR
47. CHECK FOR SHORT IN CAN BUS WIRES (SUSPENSION CONTROL ECU) Disconnect the K30 suspension control ECU connector. Measure the resistance according to the value(s) in the table below. RESULT Tester Connection Switch Condition Measured Resistance Proceed to K30-7 (CANH) - K30-8 (CANL) Engine switch off 1 ohms or higher OK K30-7 (CANH) - K30-8 (CANL) Engine switch off Below 1 ohms NG K30-7 (CANH) - E22-4 (CG) Engine switch off 1 ohms or higher OK K30-8 (CANL) - E22-4 (CG) Engine switch off 1 ohms or higher OK K30-7 (CANH) - E22-4 (CG) Engine switch off Below 1 ohms NG K30-8 (CANL) - E22-4 (CG) Engine switch off Below 1 ohms NG K30-7 (CANH) - E22-16 (BAT) Engine switch off 1 ohms or higher OK K30-8 (CANL) - E22-16 (BAT) Engine switch off 1 ohms or higher OK K30-7 (CANH) - E22-16 (BAT) Engine switch off Below 1 ohms NG K30-8 (CANL) - E22-16 (BAT) Engine switch off Below 1 ohms NG NG --> REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO SUSPENSION CONTROL ECU (CANH, CANL) OK --> See step 72
48. CONNECT CONNECTOR Reconnect the F21 No. 6 junction connector connector. NEXT: Go to next step
49. CHECK FOR SHORT IN CAN BUS WIRES (PARKING ASSIST ECU) Disconnect the F36 parking assist ECU connector. Measure the resistance according to the value(s) in the table below. RESULT Tester Connection Switch Condition Measured Resistance Proceed to F36-9 (CANH) - F36-10 (CANL) Engine switch off 1 ohms or higher OK F36-9 (CANH) - F36-10 (CANL) Engine switch off Below 1 ohms NG F36-9 (CANH) - E22-4 (CG) Engine switch off 1 ohms or higher OK F36-10 (CANL) - E22-4 (CG) Engine switch off 1 ohms or higher OK F36-9 (CANH) - E22-4 (CG) Engine switch off Below 1 ohms NG F36-10 (CANL) - E22-4 (CG) Engine switch off Below 1 ohms NG F36-9 (CANH) - E22-16 (BAT) Engine switch off 1 ohms or higher OK F36-10 (CANL) - E22-16 (BAT) Engine switch off 1 ohms or higher OK F36-9 (CANH) - E22-16 (BAT) Engine switch off Below 1 ohms NG F36-10 (CANL) - E22-16 (BAT) Engine switch off Below 1 ohms NG NG --> REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO PARKING ASSIST ECU (CANH, CANL) OK --> See step 71
50. CONNECT CONNECTOR Reconnect the E68 No. 5 junction connector connector. NEXT: Go to next step
51. CHECK FOR SHORT IN CAN BUS WIRES (SEAT BELT CONTROL ECU) Disconnect the E42 seat belt control ECU connector. Measure the resistance according to the value(s) in the table below. RESULT Tester Connection Switch Condition Measured Resistance Proceed to E42-1 (CANH) - E42-2 (CANL) Engine switch off 1 ohms or higher OK E42-1 (CANH) - E42-2 (CANL) Engine switch off Below 1 ohms NG E42-1 (CANH) - E22-4 (CG) Engine switch off 1 ohms or higher OK E42-2 (CANL) - E22-4 (CG) Engine switch off 1 ohms or higher OK E42-1 (CANH) - E22-4 (CG) Engine switch off Below 1 ohms NG E42-2 (CANL) - E22-4 (CG) Engine switch off Below 1 ohms NG E42-1 (CANH) - E22-16 (BAT) Engine switch off 1 ohms or higher OK E42-2 (CANL) - E22-16 (BAT) Engine switch off 1 ohms or higher OK E42-1 (CANH) - E22-16 (BAT) Engine switch off Below 1 ohms NG E42-2 (CANL) - E22-16 (BAT) Engine switch off Below 1 ohms NG NG --> REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO SEAT BELT CONTROL ECU (CANH, CANL) OK --> See step 64
52. CONNECT CONNECTOR Reconnect the E68 No. 5 junction connector connector. NEXT: Go to next step
53. CHECK FOR SHORT IN CAN BUS WIRES (DISTANCE CONTROL ECU) Disconnect the E86 distance control ECU connector. Measure the resistance according to the value(s) in the table below. RESULT Tester Connection Switch Condition Measured Resistance Proceed to E86-8 (CANH) - E86-9 (CANL) Engine switch off 1 ohms or higher OK E86-8 (CANH) - E86-9 (CANL) Engine switch off Below 1 ohms NG E86-8 (CANH) - E22-4 (CG) Engine switch off 1 ohms or higher OK E86-9 (CANL) - E22-4 (CG) Engine switch off 1 ohms or higher OK E86-8 (CANH) - E22-4 (CG) Engine switch off Below 1 ohms NG E86-9 (CANL) - E22-4 (CG) Engine switch off Below 1 ohms NG E86-8 (CANH) - E22-16 (BAT) Engine switch off 1 ohms or higher OK E86-9 (CANL) - E22-16 (BAT) Engine switch off 1 ohms or higher OK E86-8 (CANH) - E22-16 (BAT) Engine switch off Below 1 ohms NG E86-9 (CANL) - E22-16 (BAT) Engine switch off Below 1 ohms NG NG --> REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO DISTANCE CONTROL ECU (CANH, CANL) OK --> See step 63
54. CONNECT CONNECTOR Reconnect the E68 No. 5 junction connector connector. NEXT: Go to next step
55. CHECK FOR SHORT IN CAN BUS WIRES (YAW RATE SENSOR) Disconnect the E50 yaw rate sensor connector. Measure the resistance according to the value(s) in the table below. RESULT Tester Connection Switch Condition Measured Resistance Proceed to E50-3 (CANH) - E50-2 (CANL) Engine switch off 1 ohms or higher OK E50-3 (CANH) - E50-2 (CANL) Engine switch off Below 1 ohms NG E50-3 (CANH) - E22-4 (CG) Engine switch off 1 ohms or higher OK E50-2 (CANL) - E22-4 (CG) Engine switch off 1 ohms or higher OK E50-3 (CANH) - E22-4 (CG) Engine switch off Below 1 ohms NG E50-2 (CANL) - E22-4 (CG) Engine switch off Below 1 ohms NG E50-3 (CANH) - E22-16 (BAT) Engine switch off 1 ohms or higher OK E50-2 (CANL) - E22-16 (BAT) Engine switch off 1 ohms or higher OK E50-3 (CANH) - E22-16 (BAT) Engine switch off Below 1 ohms NG E50-2 (CANL) - E22-16 (BAT) Engine switch off Below 1 ohms NG NG --> REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO YAW RATE SENSOR (CANH, CANL) OK --> See step 65
56. CONNECT CONNECTOR Reconnect the E71 No. 4 junction connector connector. NEXT: Go to next step
57. CHECK FOR SHORT IN CAN BUS WIRES (4WD CONTROL ECU) Disconnect the A27 4WD control ECU connector. Measure the resistance according to the value(s) in the table below. RESULT Tester Connection Switch Condition Measured Resistance Proceed to A27-19 (CAN+) - A27-20 (CAN-) Engine switch off 1 ohms or higher OK A27-19 (CAN+) - A27-20 (CAN-) Engine switch off Below 1 ohms NG A27-19 (CAN+) - E22-4 (CG) Engine switch off 1 ohms or higher OK A27-20 (CAN-) - E22-4 (CG) Engine switch off 1 ohms or higher OK A27-19 (CAN+) - E22-4 (CG) Engine switch off Below 1 ohms NG A27-20 (CAN-) - E22-4 (CG) Engine switch off Below 1 ohms NG A27-19 (CAN+) - E22-16 (BAT) Engine switch off 1 ohms or higher OK A29-20 (CAN-) - E22-16 (BAT) Engine switch off 1 ohms or higher OK A27-19 (CAN+) - E22-16 (BAT) Engine switch off Below 1 ohms NG A27-20 (CAN-) - E22-16 (BAT) Engine switch off Below 1 ohms NG NG --> REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO 4WD CONTROL ECU (CAN+, CAN-) OK --> See step 66
58. CONNECT CONNECTOR Reconnect the E71 No. 4 junction connector connector. NEXT: Go to next step
59. CHECK FOR SHORT IN CAN BUS WIRES (NETWORK GATEWAY ECU) Disconnect the E31 network gateway ECU connector. Measure the resistance according to the value(s) in the table below. RESULT Tester Connection Switch Condition Measured Resistance Proceed to E31-13 (CA2H) - E31-12 (CA2L) Engine switch off 1 ohms or higher OK E31-13 (CA2H) - E31-12 (CA2L) Engine switch off Below 1 ohms NG E31-13 (CA2H) - E22-4 (CG) Engine switch off 1 ohms or higher OK E31-12 (CA2L) - E22-4 (CG) Engine switch off 1 ohms or higher OK E31-13 (CA2H) - E22-4 (CG) Engine switch off Below 1 ohms NG E31-12 (CA2L) - E22-4 (CG) Engine switch off Below 1 ohms NG E31-13 (CA2H) - E22-16 (BAT) Engine switch off 1 ohms or higher OK E31-12 (CA2L) - E22-16 (BAT) Engine switch off 1 ohms or higher OK E31-13 (CA2H) - E22-16 (BAT) Engine switch off Below 1 ohms NG E31-12 (CA2L) - E22-16 (BAT) Engine switch off Below 1 ohms NG NG --> REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO NETWORK GATEWAY ECU (CA2H, CA2L) OK --> See step 67
60. CHECK HARNESS AND CONNECTOR (NETWORK GATEWAY ECU - BATTERY AND BODY GROUND) Connect the cable to the negative (-) battery terminal. NOTE: When disconnecting the cable, some systems need to be initialized after the cable is reconnected. Refer to «INITIALIZATION». Disconnect the E31 network gateway ECU connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition E31-4 (GND) - Body ground Engine switch off 1 ohms or higher Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition E31-2 (BATT) - Body ground Always 11 to 14 V E31-9 (IG2) - Body ground Engine switch on (IG) 11 to 14 V E31-10 (IG1) - Body ground Engine switch on (IG) 11 to 14 V NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 68
61. REPLACE STEERING ANGLE SENSOR. Refer to «REMOVAL»
62. REPLACE MASTER CYLINDER SOLENOID (SKID CONTROL ECU). Refer to «DISASSEMBLY»
63. REPLACE DISTANCE CONTROL ECU ASSEMBLY. Refer to «REMOVAL»
64. REPLACE SEAT BELT CONTROL ECU. Refer to «REMOVAL»(/lexus/lx/j200-2007-2012/remont/restraints-control-systems/#seat-belt-control-ecu-service-information)
65. REPLACE YAW RATE SENSOR ASSEMBLY. Refer to «REMOVAL»
66. REPLACE 4WD CONTROL ECU. Refer to «REMOVAL»
67. REPLACE NETWORK GATEWAY ECU. Refer to «REMOVAL»(/lexus/lx/j200-2007-2012/remont/communication-devices/#networking-service-information)
68. REPLACE NETWORK GATEWAY ECU. Refer to «REMOVAL»(/lexus/lx/j200-2007-2012/remont/communication-devices/#networking-service-information)
69. REPLACE NETWORK GATEWAY ECU. Refer to «REMOVAL»(/lexus/lx/j200-2007-2012/remont/communication-devices/#networking-service-information)
70. REPLACE STEERING CONTROL ECU. Refer to «REMOVAL»(/lexus/lx/j200-2007-2012/remont/electronic-steering/#variable-gear-ratio-steering-service-information)
71. REPLACE PARKING ASSIST ECU. Refer to «REMOVAL»
72. REPLACE SUSPENSION CONTROL ECU. Refer to «REMOVAL»

HINT

For vehicles with the dynamic radar cruise control system only.

Scheme 288

Scheme 289

Scheme 290

1. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL Disconnect the cable from the negative (-) battery terminal before measuring the resistances of the main wire and the branch wire. WARNING: Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system. NOTE: w/ Navigation System: After the engine switch is turned off, the HDD navigation system requires approximately 6 minutes to record various types of memory and settings. As a result, after turning the engine switch off, wait 6 minutes or more before disconnecting the cable from the negative (-) battery terminal. When disconnecting the cable, some systems need to be initialized after the cable is reconnected. Refer to «INITIALIZATION». NEXT: Go to next step
2. CHECK FOR OPEN IN CAN BUS WIRE (SEAT BELT CONTROL ECU BRANCH WIRE) Disconnect the E42 seat belt control ECU connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition E42-1 (CANH) - E42-2 (CANL) Engine switch off 54 to 69 ohms NG --> REPAIR OR REPLACE SEAT BELT CONTROL ECU BRANCH WIRE OR CONNECTOR (CANH, CANL) OK: Go to next step
3. CHECK HARNESS AND CONNECTOR (SEAT BELT CONTROL ECU - BATTERY AND BODY GROUND) Connect the cable to the negative (-) battery terminal. NOTE: When disconnecting the cable, some systems need to be initialized after the cable is reconnected. Refer to «INITIALIZATION». Disconnect the E41 and E42 seat belt control ECU connectors. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition E41-8 (PGND) - Body ground Always Below 1 ohms Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition E41-7 (+B) - Body ground Always 11 to 14 V E42-8 (IG1) - Body ground Engine switch on (IG) 11 to 14 V NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 4
4. REPLACE SEAT BELT CONTROL ECU. Refer to «REMOVAL»(/lexus/lx/j200-2007-2012/remont/restraints-control-systems/#seat-belt-control-ecu-service-information)

Scheme 291

Scheme 292

Scheme 293

1. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL Disconnect the cable from the negative (-) battery terminal before measuring the resistances of the main wire and the branch wire. WARNING: Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system. NOTE: w/ Navigation System: After the engine switch is turned off, the HDD navigation system requires approximately 6 minutes to record various types of memory and settings. As a result, after turning the engine switch off, wait 6 minutes or more before disconnecting the cable from the negative (-) battery terminal. When disconnecting the cable, some systems need to be initialized after the cable is reconnected. Refer to «INITIALIZATION». NEXT: Go to next step
2. CHECK FOR OPEN IN CAN BUS WIRE (DISTANCE CONTROL ECU) Disconnect the E86 distance control ECU connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition E86-8 (CANH) - E86-9 (CANL) Engine switch off 54 to 69 ohms NG --> REPAIR OR REPLACE DISTANCE CONTROL ECU BRANCH WIRE OR CONNECTOR (CANH, CANL) OK: Go to next step
3. CHECK HARNESS AND CONNECTOR (DISTANCE CONTROL ECU - BATTERY AND BODY GROUND) Connect the cable to the negative (-) battery terminal. NOTE: When disconnecting the cable, some systems need to be initialized after the cable is reconnected. Refer to «INITIALIZATION». Disconnect the E86 distance control ECU connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition E86-12 (GND) - Body ground Always Below 1 ohms Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition E86-1 (B) - Body ground Always 11 to 14 V NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 4
4. REPLACE DISTANCE CONTROL ECU ASSEMBLY. Refer to «REMOVAL»

Scheme 294

Scheme 295

Scheme 296

1. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL Disconnect the cable from the negative (-) battery terminal before measuring the resistances of the main wire and the branch wire. WARNING: Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system. NOTE: w/ Navigation System: After the engine switch is turned off, the HDD navigation system requires approximately 6 minutes to record various types of memory and settings. As a result, after turning the engine switch off, wait 6 minutes or more before disconnecting the cable from the negative (-) battery terminal. When disconnecting the cable, some systems need to be initialized after the cable is reconnected. Refer to «INITIALIZATION». NEXT: Go to next step
2. CHECK FOR OPEN IN CAN BUS WIRE (WINDSHIELD WIPER ECU BRANCH WIRE) Disconnect the E90 windshield wiper ECU connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition E90-6 (CANH) - E90-5 (CANL) Engine switch off 54 to 69 ohms NG --> REPAIR OR REPLACE WINDSHIELD WIPER ECU BRANCH WIRE OR CONNECTOR (CANH, CANL) OK: Go to next step
3. CHECK HARNESS AND CONNECTOR (WINDSHIELD WIPER ECU - BATTERY AND BODY GROUND) Connect the cable to the negative (-) battery terminal. NOTE: When disconnecting the cable, some systems need to be initialized after the cable is reconnected. Refer to «INITIALIZATION». Disconnect the E89 and E90 windshield wiper ECU connectors. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition E90-10 (E) - Body ground Always Below 1 ohms Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition E89-5 (IG1I) - Body ground Engine switch on (IG) 11 to 14 V NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 4
4. REPLACE WINDSHIELD WIPER ECU. Refer to «REMOVAL»

Scheme 297

Scheme 298

Scheme 299

1. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL Disconnect the cable from the negative (-) battery terminal before measuring the resistances of the main wire and the branch wire. WARNING: Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system. NOTE: w/ Navigation System: After the engine switch is turned off, the HDD navigation system requires approximately 6 minutes to record various types of memory and settings. As a result, after turning the engine switch off, wait 6 minutes or more before disconnecting the cable from the negative (-) battery terminal. When disconnecting the cable, some systems need to be initialized after the cable is reconnected. Refer to «INITIALIZATION». NEXT: Go to next step
2. CHECK FOR OPEN IN CAN BUS WIRE (MULTIPLEX TILT AND TELESCOPIC ECU BRANCH WIRE) Disconnect the E27 multiplex tilt and telescopic ECU connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition E27-5 (CANP) - E27-14 (CANN) Engine switch off 54 to 69 ohms NG --> REPAIR OR REPLACE MULTIPLEX TILT AND TELESCOPIC ECU BRANCH WIRE OR CONNECTOR (CANP, CANN) OK: Go to next step
3. CHECK HARNESS AND CONNECTOR (MULTIPLEX TILT AND TELESCOPIC ECU - BATTERY AND BODY GROUND) Connect the cable to the negative (-) battery terminal. NOTE: When disconnecting the cable, some systems need to be initialized after the cable is reconnected. Refer to «INITIALIZATION». Disconnect the E27 multiplex tilt and telescopic ECU connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition E27-11 (GND) - Body ground Always Below 1 ohms Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition E27-2 (+B) - Body ground Always 11 to 14 V E27-9 (ECUB) - Body ground Always 11 to 14 V E27-8 (IG) - Body ground Engine switch on (IG) 11 to 14 V NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 4
4. REPLACE MULTIPLEX TILT AND TELESCOPIC ECU. Refer to «REMOVAL»

For vehicles with the wide view front and side monitor system only.

Scheme 300

Scheme 301

Scheme 302

1. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL Disconnect the cable from the negative (-) battery terminal before measuring the resistances of the main wire and the branch wire. WARNING: Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system. NOTE: w/ Navigation System After the engine switch is turned off, the HDD navigation system requires approximately 6 minutes to record various types of memory and settings. As a result, after turning the engine switch off, wait 6 minutes or more before disconnecting the cable from the negative (-) battery terminal. When disconnecting the cable, some systems need to be initialized after the cable is reconnected. Refer to «INITIALIZATION». NEXT: Go to next step
2. CHECK FOR OPEN IN CAN BUS WIRE (PARKING ASSIST ECU BRANCH WIRE) Disconnect the F36 parking assist ECU connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition F36-9 (CANH) - F36-10 (CANL) Engine switch off 54 to 69 ohms NG --> REPAIR OR REPLACE PARKING ASSIST ECU BRANCH WIRE OR CONNECTOR (CANH, CANL) OK: Go to next step
3. CHECK HARNESS AND CONNECTOR (PARKING ASSIST ECU - BATTERY AND BODY GROUND) Connect the cable to the negative (-) battery terminal. NOTE: When disconnecting the cable, some systems need to be initialized after the cable is reconnected. Refer to «INITIALIZATION». Disconnect the F36 parking assist ECU connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition F36-4 (GND1) - Body ground Always Below 1 ohms Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition F36-6 (+B) - Body ground Always 11 to 14 V F36-14 (ACC) - Body ground Engine switch on (ACC) 11 to 14 V F36-1 (IG) - Body ground Engine switch on (IG) 11 to 14 V NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 4
4. REPLACE PARKING ASSIST ECU. Refer to «REMOVAL»

Scheme 303

Scheme 304

Scheme 305

Scheme 306

Scheme 307

Scheme 308

Scheme 309

1. *1: w/ Navigation System *2: w/o Navigation System

Scheme 310

There may be an open circuit in the CAN main wire and/or DLC3 branch wire when the resistance between terminals 6 (CANH) and 14 (CANL) of the DLC3 is 69 ohms or higher.

Scheme 311

There may be a short circuit between the CAN bus lines when the resistance between terminals 6 (CANH) and 14 (CANL) of the DLC3 is below 54 ohms.

1. *1: w/ Navigation System *2: w/o Navigation System

Scheme 312

Scheme 313

There may be a short circuit between the CAN bus line and +B when there is resistance between terminals 6 (CANH) and 16 (BAT) or terminals 14 (CANL) and 16 (BAT) of the DLC3.

1. *1: w/ Navigation System *2: w/o Navigation System

There may be a short circuit between the CAN bus line and GND when there is resistance between terminals 6 (CANH) and 4 (CG) or terminals 14 (CANL) and 4 (CG) of the DLC3.

1. *1: w/ Navigation System *2: w/o Navigation System

If 2 or more ECUs and/or sensors do not appear on the Techstream "CAN Bus Check" screen, one side of the CAN branch wire may be open (One side of the CANH [branch wire]/CANL [branch wire] of the ECU and/or sensor is open).

1. *1: w/ Navigation System *2: w/o Navigation System

See also:
• REMOVAL
• REMOVAL
• REMOVAL
• REMOVAL
• REMOVAL