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CAN Communication System (Diagnostic Codes & Symptom Tests): Other Lexus RX III рестайлинг

Communication Devices ~9683 words

PROCEDURE

  1. RECONFIRM DTC OUTPUT Reconfirm DTCs. HINT: If CAN power management bus DTC U1002 is output from the power management control ECU (Techstream display/Power Management2), troubleshoot for U1002 and check for malfunctions in the power management main bus circuit. Result Result Proceed to U1002 is not output from power management control ECU (Techstream display/Power Management2) A U1002 is output from power management control ECU (Techstream display/Power Management2) B B --> See step 5 A: Go to next step
  2. CHECK CAN BUS WIRE FOR DISCONNECTION (ECM MAIN WIRE/POWER MANAGEMENT BUS) Turn the engine switch off. Disconnect the ECM connector. TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to ECM) Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition A43-8 (CANP) - A43-9 (CANN) Engine switch off 108 to 132 ohms NG --> REPAIR OR REPLACE CAN BUS MAIN WIRE OR CONNECTOR (ECM MAIN WIRE) OK: Go to next step
  3. CHECK ECM POWER SOURCE CIRCUIT Check the ECM power source circuit. Refer to «ECM Power Source Circuit»(ref-602700-S33657849822014030500000) . OK The ECM power source circuit is normal. HINT: If there is no abnormality in the ECM power source circuit, replace the ECM. NG --> REPAIR OR REPLACE ECM POWER SOURCE CIRCUIT OK --> See step 4
  4. REPLACE ECM. Refer to «REMOVAL [03/2012 - 07/2012]»(ref-602706-S36928064912014030500000)
  5. REPAIR CIRCUITS INDICATED BY OUTPUT DTCS. Refer to «DTC U1002: Lost Communication with Gateway Module (Power Management2)»(ref-602813-S26277348642014030500000)
  1. RECONFIRM DTC OUTPUT Reconfirm DTCs. HINT: If CAN No. 2 bus DTC U1002 is output from the power the management control ECU (Techstream display/Power Management1), troubleshoot for U1002 and check for malfunctions in the CAN No. 2 main bus circuit. Result Result Proceed to U1002 is not output from power management control ECU (Techstream display/Power Management1) A U1002 is output from power management control ECU (Techstream display/Power Management1) B B --> See step 6 A: Go to next step
  2. CHECK CAN BUS WIRE FOR DISCONNECTION (DRIVING SUPPORT ECU BRANCH WIRE) Turn the engine switch off. Disconnect the driving support ECU connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition C1-39 (CA2H) - C1-17 (CA2L) Engine switch off 54 to 69 ohms TEXT IN ILLUSTRATION *1 Rear view of wire harness connector (to Driving Support ECU) NG --> REPAIR OR REPLACE CAN BUS BRANCH WIRE OR CONNECTOR (DRIVING SUPPORT ECU BRANCH WIRE) OK: Go to next step
  3. CHECK HARNESS AND CONNECTOR (POWER SOURCE TERMINAL) Turn the engine switch on (IG). Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition C1-30 (B) - Body ground Engine switch on (IG) 11 to 14 V TEXT IN ILLUSTRATION *1 Rear view of wire harness connector (to Driving Support ECU) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT) OK: Go to next step
  4. CHECK HARNESS AND CONNECTOR (GROUND TERMINAL) Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition C1-25 (GND) - Body ground Always Below 1 ohms TEXT IN ILLUSTRATION *1 Rear view of wire harness connector (to Driving Support ECU) NG --> HARNESS OR CONNECTOR (GROUND CIRCUIT) OK --> See step 5
  5. REPLACE DRIVING SUPPORT ECU. Refer to «REMOVAL [03/2012 - 07/2012]»(ref-602562-S20394205802014030500000)
  6. GO TO CIRCUITS INDICATED BY OUTPUT DTCS. Refer to «DTC U1002: Lost Communication with Gateway Module (Power Management1)»(ref-602813-S06733978672014030500000)
  1. RECONFIRM DTC OUTPUT Reconfirm DTCs. HINT: If CAN No. 2 bus DTC U1002 is output from the power management control ECU (Techstream display/Power Management1), troubleshoot for U1002 and check for malfunctions in the CAN No. 2 main bus circuit. Result Result Proceed to U1002 is not output from power management control ECU (Techstream display/Power Management1) A U1002 is output from power management control ECU (Techstream display/Power Management1) B B --> See step 6 A: Go to next step
  2. CHECK CAN BUS WIRE FOR DISCONNECTION (4WD CONTROL ECU BRANCH WIRE) Turn the engine switch off. Disconnect the 4WD control ECU connector. TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to 4WD Control ECU) Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition O2-14 (CANH) - O2-16 (CANL) Engine switch off 54 to 69 ohms NG --> REPAIR OR REPLACE CAN BUS BRANCH WIRE OR CONNECTOR (4WD CONTROL ECU BRANCH WIRE) OK: Go to next step
  3. CHECK HARNESS AND CONNECTOR (POWER SOURCE TERMINAL) Turn the engine switch on (IG). Measure the voltage according to the value(s) in table below. Standard Voltage Tester Connection Switch Condition Specified Condition O2-11 (IG1) - Body ground Engine switch on (IG) 11 to 14 V TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to 4WD Control ECU) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT) OK: Go to next step
  4. CHECK HARNESS AND CONNECTOR (GROUND TERMINAL) Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition O2-23 (GND) - Body ground Always Below 1 ohms TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to 4WD Control ECU) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (GROUND CIRCUIT) OK --> See step 5
  5. REPLACE 4WD CONTROL ECU. Refer to «REMOVAL [03/2012 - 07/2012]»(ref-602729-S07101840792014030500000)
  6. GO TO CIRCUITS INDICATED BY OUTPUT DTCS. Refer to «DTC U1002: Lost Communication with Gateway Module (Power Management1)»(ref-602813-S06733978672014030500000)
  1. RECONFIRM DTC OUTPUT Reconfirm DTCs. HINT: If power management bus DTC U1002 is output from the power management control ECU (Techstream display/Power Management2), troubleshoot for U1002 and check for malfunctions in the power management main bus circuit. Result Result Proceed to U1002 is not output from power management control ECU (Techstream display/Power Management2) A U1002 is output from power management control ECU (Techstream display/Power Management2) B B --> See step 6 A: Go to next step
  2. CHECK CAN BUS WIRE FOR DISCONNECTION (AIR CONDITIONING AMPLIFIER BRANCH WIRE) Turn the engine switch off. Disconnect the air conditioning amplifier connector. TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Air Conditioning Amplifier) Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition F50-11 (CANH) - F50-12 (CANL) Engine switch off 54 to 69 ohms NG --> REPAIR OR REPLACE CAN BUS BRANCH WIRE OR CONNECTOR (AIR CONDITIONING AMPLIFIER BRANCH WIRE) OK: Go to next step
  3. CHECK HARNESS AND CONNECTOR (POWER SOURCE TERMINAL) Turn the engine switch on (IG). Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition F50-1 (IG+) - Body ground Engine switch on (IG) 11 to 14 V TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Air Conditioning Amplifier) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT) OK: Go to next step
  4. CHECK FRONT AND SIDE MONITOR SYSTEM (GROUND TERMINAL) Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition F50-14 (GND) - Body ground Always Below 1 ohms TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Air Conditioning Amplifier) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (GROUND CIRCUIT) OK --> See step 5
  5. REPLACE AIR CONDITIONING AMPLIFIER. Refer to «REMOVAL [03/2012 - 07/2012]»(ref-602698-S09243280892014030500000)
  6. GO TO CIRCUITS INDICATED BY OUTPUT DTCS. Refer to «DTC U1002: Lost Communication with Gateway Module (Power Management2)»(ref-602813-S26277348642014030500000)
  1. RECONFIRM DTC OUTPUT Reconfirm DTCs. HINT: If CAN No. 2 bus DTC U1002 is output from the power management control ECU (Techstream display/Power Management1), troubleshoot for U1002 and check for malfunctions in the CAN No. 2 main bus circuit. Result Result Proceed to U1002 is not output from power management control ECU (Techstream display/Power Management1) A U1002 is output from power management control ECU (Techstream display/Power Management1) B B --> See step 6 A: Go to next step
  2. CHECK CAN BUS WIRE FOR DISCONNECTION (AFS ECU BRANCH WIRE) Turn the engine switch off. Disconnect the AFS ECU connector. TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to AFS ECU) Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Value A53-12 (CANH) - A53-13 (CANL) Engine switch off 54 to 69 ohms NG --> REPAIR OR REPLACE CAN BUS BRANCH WIRE (AFS ECU BRANCH WIRE) OK: Go to next step
  3. CHECK HARNESS AND CONNECTOR (POWER SOURCE TERMINAL) Turn the engine switch on (IG). Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition A53-15 (IG) - Body ground Engine switch on (IG) 11 to 14 V TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to AFS ECU) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT) OK: Go to next step
  4. CHECK HARNESS AND CONNECTOR (GROUND TERMINAL) Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition A53-22 (E1) - Body ground Always Below 1 ohms TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to AFS ECU) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (GROUND TERMINAL) OK --> See step 5
  5. REPLACE AFS ECU. Refer to «REMOVAL [03/2012 - 07/2012]»(ref-602715-S02823273202014030500000)
  6. GO TO CIRCUITS INDICATED BY OUTPUT DTCS. Refer to «DTC U1002: Lost Communication with Gateway Module (Power Management1)»(ref-602813-S06733978672014030500000)
  1. RECONFIRM DTC OUTPUT Reconfirm DTCs. HINT: If CAN MS bus DTC U1002 is output from the main body ECU (Techstream display/Main Body), troubleshoot for U1002 and check for malfunctions in the CAN MS bus circuit. Result Result Proceed to U1002 is not output from main body ECU (Techstream display/Main Body) A U1002 is output from main body ECU (Techstream display/Main Body) B B --> See step 6 A: Go to next step
  2. CHECK CAN BUS WIRE FOR DISCONNECTION (OUTER MIRROR CONTROL ECU RH BRANCH WIRE) Turn the engine switch off. Disconnect the outer mirror control ECU RH connector. TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Outer Mirror Control ECU RH) Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition I4-9 (CANP) - I4-8 (CANN) Engine switch off 54 to 69 ohms NG --> REPAIR OR REPLACE CAN BUS BRANCH WIRE OR CONNECTOR (OUTER MIRROR CONTROL ECU RH BRANCH WIRE) OK: Go to next step
  3. CHECK HARNESS AND CONNECTOR (POWER SOURCE TERMINAL) Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition I4-6 (CPUB) - Body ground Always 11 to 14 V I4-5 (SIG) - Body ground Engine switch on (IG) 11 to 14 V TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Outer Mirror Control ECU RH) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT) OK: Go to next step
  4. CHECK HARNESS AND CONNECTOR (GROUND TERMINAL) Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition I4-7 (GND) - Body ground Always Below 1 ohms TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Outer Mirror Control ECU RH) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (GROUND CIRCUIT) OK --> See step 5
  5. REPLACE OUTER MIRROR CONTROL ECU RH. Refer to «REMOVAL [03/2012 - ]»(ref-602809-S22312072782014030500000)
  6. REPAIR CIRCUITS INDICATED BY OUTPUT DTCS. Refer to «DTC U1002: Lost Communication with Gateway Module (Main Body)»(ref-602813-S29577915332014030500000)
  1. RECONFIRM DTC OUTPUT Reconfirm DTCs. HINT: If CAN MS bus DTC U1002 is output from the main body ECU (Techstream display/Main Body), troubleshoot for U1002 and check for malfunctions in the CAN MS bus circuit. Result Result Proceed to U1002 is not output from main body ECU (Techstream display/Main Body) A U1002 is output from main body ECU (Techstream display/Main Body) B B --> See step 6 A: Go to next step
  2. CHECK CAN BUS WIRE FOR DISCONNECTION (OUTER MIRROR CONTROL ECU LH BRANCH WIRE) Turn the engine switch off. Disconnect the outer mirror control ECU LH connector. TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Outer Mirror Control ECU LH) Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition J3-9 (CANP) - J3-8 (CANN) Engine switch off 54 to 69 ohms NG --> REPAIR OR REPLACE CAN BUS BRANCH WIRE OR CONNECTOR (OUTER MIRROR CONTROL ECU LH BRANCH WIRE) OK: Go to next step
  3. CHECK HARNESS AND CONNECTOR (POWER SOURCE TERMINAL) Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition J3-6 (CPUB) - Body ground Always 11 to 14 V J3-5 (SIG) - Body ground Engine switch on (IG) 11 to 14 V TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Outer Mirror Control ECU LH) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT) OK: Go to next step
  4. CHECK HARNESS AND CONNECTOR (GROUND TERMINAL) Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition J3-7 (GND) - Body ground Always Below 1 ohms TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Outer Mirror Control ECU LH) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (GROUND CIRCUIT) OK --> See step 5
  5. REPLACE OUTER MIRROR CONTROL ECU LH. Refer to «REMOVAL [03/2012 - ]»(ref-602809-S22312072782014030500000)
  6. GO TO CIRCUITS INDICATED BY OUTPUT DTCS. Refer to «DTC U1002: Lost Communication with Gateway Module (Main Body)»(ref-602813-S29577915332014030500000)
  1. RECONFIRM DTC OUTPUT Reconfirm DTCs. HINT: If CAN MS bus DTC U1002 is output from the main body ECU (Techstream display/Main Body), troubleshoot for U1002 and check for malfunctions in the CAN MS bus circuit. Result Result Proceed to U1002 is not output from main body ECU (Techstream display/Main Body) A U1002 is output from main body ECU (Techstream display/Main Body) B B --> See step 6 A: Go to next step
  2. CHECK CAN BUS WIRE FOR DISCONNECTION (POSITION CONTROL ECU LH BRANCH WIRE) Turn the engine switch off. Disconnect the position control ECU LH connector. TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Position Control ECU LH) Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition a8-8 (CANP) - a8-7 (CANN) Engine switch off 54 to 69 ohms NG --> REPAIR OR REPLACE CAN BUS BRANCH WIRE OR CONNECTOR (POSITION CONTROL ECU LH BRANCH WIRE) OK: Go to next step
  3. CHECK HARNESS AND CONNECTOR (POWER SOURCE TERMINAL) Disconnect the position control ECU LH connector. TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Position Control ECU LH) Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition a9-6 (+B) - Body ground Always 11 to 14 V NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT) OK: Go to next step
  4. CHECK HARNESS AND CONNECTOR (GROUND TERMINAL) Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition a9-1 (GND) - Body ground Always Below 1 ohms TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Position Control ECU LH) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (GROUND CIRCUIT) OK --> See step 5
  5. REPLACE POSITION CONTROL ECU & SWITCH ASSEMBLY (LH). Refer to «REMOVAL [03/2012 - ]»(ref-602733-S13561161802014030500000)
  6. GO TO CIRCUITS INDICATED BY OUTPUT DTCS. Refer to «DTC U1002: Lost Communication with Gateway Module (Main Body)»(ref-602813-S29577915332014030500000)
  1. RECONFIRM DTC OUTPUT Reconfirm DTCs. HINT: If CAN MS bus DTC U1002 is output from the main body ECU (Techstream display/Main Body), troubleshoot for U1002 and check for malfunctions in the CAN MS bus circuit. Result Result Proceed to U1002 is not output from main body ECU (Techstream display/Main Body) A U1002 is output from main body ECU (Techstream display/Main Body) B B --> See step 5 A: Go to next step
  2. CHECK CAN BUS WIRE FOR DISCONNECTION (POWER BACK DOOR ECU BRANCH WIRE) Turn the engine switch off. Disconnect the power back door ECU connector. TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Power Back Door ECU) Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition P33-6 (CANP) - P33-5 (CANN) Engine switch off 54 to 69 ohms NG --> REPAIR OR REPLACE CAN BUS BRANCH WIRE OR CONNECTOR (POWER BACK DOOR ECU BRANCH WIRE) OK: Go to next step
  3. CHECK HARNESS AND CONNECTOR (POWER SOURCE TERMINAL) Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition P33-10 (ECUB) - Body ground Always 11 to 14 V P33-8 (IG) - Body ground Engine switch on (IG) 11 to 14 V TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Power Back Door ECU) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT) OK: Go to next step
  4. CHECK HARNESS AND CONNECTOR (GROUND TERMINAL) Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition P33-11 (GND) - Body ground Always Below 1 ohms TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Power Back Door ECU) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (GROUND CIRCUIT) OK --> See step 6
  5. REPAIR CIRCUITS INDICATED BY OUTPUT DTCS. Refer to «DTC U1002: Lost Communication with Gateway Module (Main Body)»(ref-602813-S29577915332014030500000)
  6. REPLACE POWER BACK DOOR UNIT ASSEMBLY (POWER BACK DOOR ECU). Refer to «REMOVAL [03/2012 - ]»(ref-602738-S04433819052014030500000)
  1. CHECK CAN BUS WIRE Turn the engine switch off. Measure the resistance according to the value(s) in the table below. TEXT IN ILLUSTRATION *1 Component with harness connected (Power Management Control ECU) Standard Resistance Tester Connection Switch Condition Specified Condition Result F8-12 (CA3P) - F8-11 (CA3N) Engine switch off 54 to 69 ohms Below 54 ohms: Short circuit between bus wires 70 ohms or higher: Open circuit in a main bus wire F8-12 (CA3P) - F8-6 (GND) Engine switch off 200 ohms or higher Below 200 ohms: CANH ground short F8-11 (CA3N) - F8-6 (GND) Engine switch off 200 ohms or higher Below 200 ohms: CANL ground short Disconnect the cable from the negative (-) battery terminal. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition Result F8-12 (CA3P) - F8-1 (AM22) Cable disconnected from negative (-) battery terminal 6 kohms or higher Below 6 kohms: CANH +B short F8-11 (CA3N) - F8-1 (AM22) Cable disconnected from negative (-) battery terminal 6 kohms or higher Below 6 kohms: CANL +B short Result Result Proceed to OK A Open circuit in CAN main bus wire B Short circuit between bus wires C Ground short +B short D B --> See step 2 C --> See step 5 D --> See step 9 A --> See step 14
  2. CHECK FOR OPEN IN CAN BUS WIRE (POWER MANAGEMENT CONTROL ECU) Disconnect the power management control ECU connector. TEXT IN ILLUSTRATION *1 Rear view of wire harness connector (to Power Management Control ECU) Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition F8-12 (CA3P) - F8-11 (CA3N) Engine switch off 108 to 132 ohms NG --> See step 3 OK --> See step 14
  3. CHECK FOR OPEN IN CAN BUS WIRE (ECM) Reconnect the power management control ECU connector. Disconnect the ECM connector. TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to ECM) Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition A43-8 (CANP) - A43-9 (CANN) Engine switch off 108 to 132 ohms NG --> See step 4 OK --> See step 13
  4. CHECK FOR OPEN IN CAN BUS WIRE (CAN NO. 7 J/C MAIN WIRE) Reconnect the ECM connector. Disconnect the CAN No. 7 junction connector. TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to CAN No. 7 Junction Connector) *2 to Power Management Control ECU *3 to ECM Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition F72-2 (CANH) - F72-13 (CANL) Engine switch off 108 to 132 ohms F72-3 (CANH) - F72-14 (CANL) Engine switch off 108 to 132 ohms Result Result Proceed to OK A NG (to ECM main wire) B NG (to Power management ECU main wire) C B --> REPAIR OR REPLACE CAN BUS MAIN WIRE OR CONNECTOR (CAN NO. 7 J/C - ECM) C --> REPAIR OR REPLACE CAN BUS MAIN WIRE OR CONNECTOR (CAN NO. 7 J/C - POWER MANAGEMENT CONTROL ECU) A --> REPLACE CAN NO. 7 JUNCTION CONNECTOR
  5. CHECK FOR SHORT IN CAN BUS WIRE (POWER MANAGEMENT CONTROL ECU) Disconnect the power management control ECU connector. TEXT IN ILLUSTRATION *1 Rear view of wire harness connector (to Power Management Control ECU) Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition F8-12 (CA3P) - F8-11 (CA3N) Engine switch off 108 to 132 ohms NG --> See step 6 OK --> See step 14
  6. CHECK FOR SHORT IN CAN BUS WIRES (ECM) Reconnect the power management control ECU connector. Disconnect the ECM connector. TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to ECM) Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition A43-8 (CANP) - A43-9 (CANN) Engine switch off 108 to 132 ohms NG --> See step 7 OK --> See step 13
  7. CHECK FOR SHORT IN CAN BUS MAIN WIRE (CAN NO. 7 J/C MAIN WIRE) Reconnect the ECM connector. Disconnect the CAN No. 7 junction connector. TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to CAN No. 7 Junction Connector) *2 to Power Management Control ECU *3 to ECM Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition F72-2 (CANH) - F72-13 (CANL) Engine switch off 108 to 132 ohms F72-3 (CANH) - F72-14 (CANL) Engine switch off 108 to 132 ohms Result Result Proceed to OK A NG (to ECM main wire) B NG (to Power management ECU main wire) C B --> REPAIR OR REPLACE CAN BUS MAIN WIRE OR CONNECTOR (CAN NO. 7 J/C - ECM) C --> REPAIR OR REPLACE CAN BUS MAIN WIRE OR CONNECTOR (CAN NO. 7 J/C - POWER MANAGEMENT CONTROL ECU) A: Go to next step
  8. CHECK FOR SHORT IN CAN BUS WIRES (CAN NO. 7 J/C - A/C ECU) Disconnect the air conditioning amplifier connector. Disconnect the CAN No. 7 junction connector. TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to CAN No. 7 Junction Connector) *2 to Air Conditioning Amplifier Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition F72-1 (CANH) - F72-12 (CANL) Engine switch off 1 Mohms or higher NG --> REPAIR OR REPLACE CAN BUS BRANCH WIRE OR CONNECTOR (CAN NO. 7 J/C - A/C ECU) OK --> See step 15
  9. CHECK FOR SHORT IN CAN BUS WIRES (POWER MANAGEMENT CONTROL ECU) Disconnect the power management control ECU connector. TEXT IN ILLUSTRATION *1 Rear view of wire harness connector (to Power Management Control ECU) Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition Purpose F8-12 (CA3P) - F8-6 (GND) Engine switch off 200 ohms or higher Inspection for CANH ground short F8-11 (CA3N) - F8-6 (GND) Engine switch off 200 ohms or higher Inspection for CANL ground short F8-12 (CA3P) - F8-1 (AM22) Cable disconnected from negative (-) battery terminal 6 kohms or higher Inspection for CANH +B short F8-11 (CA3N) - F8-1 (AM22) Cable disconnected from negative (-) battery terminal 6 kohms or higher Inspection for CANL +B short HINT: It is only necessary to perform the inspection in the above table for the result (open or short circuit) that was obtained in the Check CAN Bus Wire inspection. Find the necessary inspection from the Purpose column that matches the result in the Result column from the Check CAN Bus Wire inspection. NG --> See step 10 OK --> See step 14
  10. CHECK FOR SHORT IN CAN BUS WIRES (ECM) Disconnect the ECM connectors. TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to ECM) - - Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition Purpose A43-8 (CANP) - D1-81 (E1) Engine switch off 200 ohms or higher Inspection for CANH ground short A43-9 (CANN) - D1-81 (E1) Engine switch off 200 ohms or higher Inspection for CANL ground short A43-8 (CANP) - A43-1 (BATT) Cable disconnected from negative (-) battery terminal 6 kohms or higher Inspection for CANH +B short A43-9 (CANN) - A43-1 (BATT) Cable disconnected from negative (-) battery terminal 6 kohms or higher Inspection for CANL +B short HINT: It is only necessary to perform the inspection in the above table for the result (open or short circuit) that was obtained in the Check CAN Bus Wire inspection. Find the necessary inspection from the Purpose column that matches the result in the Result column from the Check CAN Bus Wire inspection. NG --> See step 11 OK --> See step 13
  11. CHECK FOR SHORT IN CAN BUS WIRES (CAN NO. 7 J/C MAIN WIRE) Disconnect the CAN No. 7 junction connector. TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to CAN No. 7 junction connector) *2 to Power Management Control ECU *3 to ECM *4 DLC3 Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition Purpose Connected to F72-2 (CANH) - F17-4 (CG) Engine switch off 200 ohms or higher Inspection for CANH ground short Power management control ECU F72-13 (CANL) - F17-4 (CG) Engine switch off 200 ohms or higher Inspection for CANL ground short F72-2 (CANH) - F17-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kohms or higher Inspection for CANH +B short F72-13 (CANL) - F17-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kohms or higher Inspection for CANL +B short F72-3 (CANH) - F17-4 (CG) Engine switch off 200 ohms or higher Inspection for CANH ground short ECM F72-14 (CANL) - F17-4 (CG) Engine switch off 200 ohms or higher Inspection for CANL ground short F72-3 (CANH) - F17-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kohms or higher Inspection for CANH +B short F72-14 (CANL) - F17-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kohms or higher Inspection for CANL +B short HINT: It is only necessary to perform the inspection in the above table for the result (open or short circuit) that was obtained in the Check CAN Bus Wire inspection. Find the necessary inspection from the Purpose column that matches the result in the Result column from the Check CAN Bus Wire inspection. Result Result Proceed to OK A NG (to ECM main wire) B NG (to Power management control ECU main wire) C B --> REPAIR OR REPLACE CAN BUS MAIN WIRE OR CONNECTOR (CAN NO. 7 J/C - ECM) C --> REPAIR OR REPLACE CAN BUS MAIN WIRE OR CONNECTOR (CAN NO. 7 J/C - POWER MANAGEMENT CONTROL ECU) A: Go to next step
  12. CHECK FOR SHORT IN CAN BUS WIRES (CAN NO. 7 J/C - A/C ECU) Disconnect the air conditioning amplifier connector. Measure the resistance according to the value(s) in the table below. TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to CAN No. 7 junction connector) *2 to Air Conditioning Amplifier *3 DLC3 Standard Resistance Tester Connection Condition Specified Condition Purpose F72-1 (CANH) - F17-4 (CG) Engine switch off 200 ohms or higher Inspection for CANH ground short F72-12 (CANL) - F17-4 (CG) Engine switch off 200 ohms or higher Inspection for CANL ground short F72-1 (CANH) - F17-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kohms or higher Inspection for CANH +B short F72-12 (CANL) - F17-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kohms or higher Inspection for CANL +B short HINT: It is only necessary to perform the inspection in the above table for the result (open or short circuit) that was obtained in the Check CAN Bus Wire inspection. Find the necessary inspection from the Purpose column that matches the result in the Result column from the Check CAN Bus Wire inspection. NG --> REPAIR OR REPLACE CAN BUS BRANCH WIRE OR CONNECTOR (CAN NO. 7 J/C - A/C ECU) OK --> See step 15
  13. REPLACE ECM. Refer to «REMOVAL [03/2012 - 07/2012]»(ref-602706-S36928064912014030500000)
  14. REPLACE POWER MANAGEMENT CONTROL ECU. Refer to «REMOVAL [03/2012 - ]»(ref-602764-S40427084882014030500000)
  15. REPLACE AIR CONDITIONING AMPLIFIER. Refer to «REMOVAL [03/2012 - 07/2012]»(ref-602698-S09243280892014030500000)
  1. RECONFIRM DTC OUTPUT Reconfirm DTCs. HINT: If CAN No. 2 bus DTC U1002 is output from the power management control ECU (Techstream display/Power Management1), troubleshoot for U1002 and check for malfunctions in the CAN No. 2 main bus circuit. Result Result Proceed to U1002 is not output from power management control ECU (Techstream display/Power Management1) A U1002 is output from power management control ECU (Techstream display/Power Management1) B B --> See step 6 A: Go to next step
  2. CHECK CAN BUS WIRE FOR DISCONNECTION (SEAT BELT CONTROL ECU BRANCH WIRE) Turn the engine switch off. Disconnect the seat belt control ECU connector. TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Seat Belt Control ECU) Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition F56-1 (CANH) - F56-2 (CANL) Engine switch off 54 to 69 ohms NG --> REPAIR OR REPLACE SEAT BELT CONTROL ECU BRANCH WIRE OR CONNECTOR (SEAT BELT CONTROL ECU BRANCH WIRE) OK: Go to next step
  3. CHECK HARNESS AND CONNECTOR (POWER SOURCE TERMINAL) Turn the engine switch on (IG). Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition F56-8 (IG1) - Body ground Engine switch on (IG) 11 to 14 V TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Seat Belt Control ECU) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT) OK: Go to next step
  4. CHECK HARNESS AND CONNECTOR (GROUND TERMINAL) Disconnect the seat belt control ECU connector. TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Seat Belt Control ECU) Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition F57-8 (PGND) - Body ground Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (GROUND CIRCUIT) OK --> See step 5
  5. REPLACE SEAT BELT CONTROL ECU. Refer to «REMOVAL [03/2012 - 07/2012]»(ref-602814-S01781434562014030500000)
  6. GO TO CIRCUITS INDICATED BY OUTPUT DTCS. Refer to «DTC U1002: Lost Communication with Gateway Module (Power Management1)»(ref-602813-S06733978672014030500000)
  1. RECONFIRM DTC OUTPUT Reconfirm DTCs. HINT: If CAN No. 2 bus DTC U1002 is output from the power management control ECU (Techstream display/Power Management1), troubleshoot for U1002 and check for malfunctions in the CAN No. 2 main bus circuit. Result Result Proceed to U1002 is not output from power management control ECU (Techstream display/Power Management1) A U1002 is output from power management control ECU (Techstream display/Power Management1) B B --> See step 6 A: Go to next step
  2. CHECK CAN BUS WIRE FOR DISCONNECTION (CLEARANCE WARNING ECU BRANCH WIRE) Turn the engine switch off. Disconnect the clearance warning ECU connector. TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Clearance Warning ECU) Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition F52-3 (R1) - F52-5 (R2) Engine switch off 54 to 69 ohms NG --> REPAIR OR REPLACE CLEARANCE WARNING ECU BRANCH WIRE OR CONNECTOR (CLEARANCE WARNING ECU BRANCH WIRE) OK: Go to next step
  3. CHECK HARNESS AND CONNECTOR (POWER SOURCE TERMINAL) Turn the engine switch on (IG). Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition F52-15 (IG) - Body ground Engine switch on (IG) 11 to 14 V TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Clearance Warning ECU) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT) OK: Go to next step
  4. PERFORM ACTIVE TEST USING HARNESS AND CONNECTOR (GROUND TERMINAL) Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition F52-17 (E) - Body ground Always Below 1 ohms TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Clearance Warning ECU) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (GROUND CIRCUIT) OK --> See step 5
  5. REPLACE CLEARANCE WARNING ECU. Refer to «REMOVAL [03/2012 - 07/2012]»(ref-602801-S22322905532014030500000)
  6. GO TO CIRCUITS INDICATED BY OUTPUT DTCS. Refer to «DTC U1002: Lost Communication with Gateway Module (Power Management1)»(ref-602813-S06733978672014030500000)
  1. RECONFIRM DTC OUTPUT Reconfirm DTCs. HINT: If CAN MS bus DTC U1002 is output from the main body ECU (Techstream display/Main Body), troubleshoot for U1002 and check for malfunctions in the CAN MS bus circuit. Result Result Proceed to U1002 is not output from main body ECU (Techstream display/Main Body) A U1002 is output from main body ECU (Techstream display/Main Body) B B --> See step 6 A: Go to next step
  2. CHECK CAN BUS WIRE FOR DISCONNECTION (MULTIPLEX TILT AND TELESCOPIC ECU MAIN WIRE/CAN MS BUS) Turn the engine switch off. Disconnect the tilt and telescopic ECU connector. TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Tilt and Telescopic ECU) Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition F36-5 (CANP) - F36-14 (CANN) Engine switch off 108 to 132 ohms NG --> REPAIR OR REPLACE CAN BUS MAIN WIRE OR CONNECTOR (MULTIPLEX TILT AND TELESCOPIC ECU MAIN WIRE) OK: Go to next step
  3. CHECK HARNESS AND CONNECTOR (POWER SOURCE TERMINAL) Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition F36-9 (ECUB) - Body ground Always 11 to 14 V F36-8 (IG) - Body ground Engine switch on (IG) 11 to 14 V TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Tilt and Telescopic ECU) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT) OK: Go to next step
  4. CHECK HARNESS AND CONNECTOR (GROUND TERMINAL) Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition F36-11 (GND) - Body ground Always Below 1 ohms TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Tilt and Telescopic ECU) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (GROUND CIRCUIT) OK --> See step 5
  5. REPLACE MULTIPLEX TILT AND TELESCOPIC ECU. Refer to «REMOVAL [03/2012 - ]»(ref-602552-S04083034072014030500000)
  6. GO TO CIRCUITS INDICATED BY OUTPUT DTCS. Refer to «DTC U1002: Lost Communication with Gateway Module (Main Body)»(ref-602813-S29577915332014030500000)
  1. CHECK CAN BUS WIRE FOR DISCONNECTION (SKID CONTROL ECU BRANCH WIRE) Turn the engine switch off. Disconnect the skid control ECU connector. TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Skid Control ECU) Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition A44-25 (CANH) - A44-14 (CANL) Engine switch off 54 to 69 ohms NG --> REPAIR OR REPLACE CAN BUS BRANCH WIRE OR CONNECTOR (SKID CONTROL ECU BRANCH WIRE) OK: Go to next step
  2. CHECK HARNESS AND CONNECTOR (POWER SOURCE TERMINAL) Turn the engine switch on (IG). Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition A44-34 (IG1) - Body ground Engine switch on (IG) 11 to 14 V TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Skid Control ECU) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT) OK: Go to next step
  3. CHECK HARNESS AND CONNECTOR (GROUND TERMINAL) Turn the engine switch off. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition A44-1 (GND1) - Body ground Always Below 1 ohms TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Skid Control ECU) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (GROUND CIRCUIT) OK --> See step 4
  4. REPLACE BRAKE ACTUATOR (SKID CONTROL ECU). Refer to «REMOVAL [03/2012 - 07/2012]»(ref-602731-S10630273972014030500000)
  1. CHECK CAN BUS WIRE FOR DISCONNECTION (POWER STEERING ECU BRANCH WIRE) Turn the engine switch off. Disconnect the power steering ECU connector. TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Power Steering ECU) Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition F9-1 (CANH) - F9-7 (CANL) Engine switch off 54 to 69 ohms NG --> REPAIR OR REPLACE CAN BUS BRANCH WIRE OR CONNECTOR (POWER STEERING ECU BRANCH WIRE) OK: Go to next step
  2. CHECK HARNESS AND CONNECTOR (POWER SOURCE TERMINAL) Turn the engine switch on (IG). Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition F9-6 (IG) - Body ground Engine switch on (IG) 11 to 14 V F10-1 (PIG) - Body ground Always 11 to 14 V TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Power Steering ECU) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT) OK: Go to next step
  3. CHECK HARNESS AND CONNECTOR (GROUND TERMINAL) Turn the engine switch off. Disconnect the power steering ECU connector. TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Power Steering ECU) Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition F10-2 (PGND) - Body ground Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (GROUND CIRCUIT) OK --> See step 4
  4. REPLACE POWER STEERING ECU. Refer to «REMOVAL [03/2012 - 07/2012]»(ref-602765-S35671449662014030500000)
  1. CHECK CAN BUS WIRE FOR DISCONNECTION (STEERING ANGLE SENSOR BRANCH WIRE) Turn the engine switch off. Disconnect the steering angle sensor connector. TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Steering Angle Sensor) Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition F43-4 (CANH) - F43-3 (CANL) Engine switch off 54 to 69 ohms NG --> REPAIR OR REPLACE CAN BUS BRANCH WIRE OR CONNECTOR (STEERING ANGLE SENSOR BRANCH WIRE) OK: Go to next step
  2. CHECK HARNESS AND CONNECTOR (POWER SOURCE TERMINAL) Turn the engine switch on (IG). Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition F43-5 (IG) - Body ground Engine switch on (IG) 11 to 14 V TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Steering Angle Sensor) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT) OK: Go to next step
  3. CHECK HARNESS AND CONNECTOR (GROUND TERMINAL) Turn the engine switch off. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition F43-2 (ESS) - Body ground Always Below 1 ohms TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Steering Angle Sensor) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (GROUND CIRCUIT) OK --> See step 4
  4. REPLACE SPIRAL CABLE W/ STEERING ANGLE SENSOR SUB-ASSEMBLY. Refer to «REMOVAL [03/2012 - 07/2012]»(ref-602731-S13461193962014030500000)
  1. CHECK CAN BUS WIRE FOR DISCONNECTION (YAW RATE SENSOR BRANCH WIRE) Turn the engine switch off. Disconnect the yaw rate and acceleration sensor connector. TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Yaw Rate Sensor) Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition F28-3 (CANH) - F28-2 (CANL) Engine switch off 54 to 69 ohms NG --> REPAIR OR REPLACE CAN BUS BRANCH WIRE OR CONNECTOR (YAW RATE AND ACCELERATION SENSOR BRANCH WIRE) OK: Go to next step
  2. CHECK HARNESS AND CONNECTOR (POWER SOURCE TERMINAL) Turn the engine switch on (IG). Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition F28-4 (IG) - Body ground Engine switch on (IG) 11 to 14 V TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Yaw Rate Sensor) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT) OK: Go to next step
  3. CHECK HARNESS AND CONNECTOR (GROUND TERMINAL) Turn the engine switch off. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition F28-1 (GND) - Body ground Always Below 1 ohms TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Yaw Rate Sensor) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (GROUND CIRCUIT) OK --> See step 4
  4. REPLACE YAW RATE SENSOR ASSEMBLY. Refer to «REMOVAL [03/2012 - 07/2012]»(ref-602731-S31354374612014030500000)
  1. CHECK CAN BUS WIRE FOR DISCONNECTION (ECM MAIN WIRE) Turn the engine switch off. Disconnect the ECM connector. TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to ECM) Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition A43-10 (CANH) - A43-11 (CANL) Engine switch off 108 to 132 ohms NG --> REPAIR OR REPLACE CAN BUS MAIN WIRE OR CONNECTOR (ECM MAIN WIRE) OK: Go to next step
  2. CHECK ECM POWER SOURCE CIRCUIT Check the ECM power source circuit. Refer to «ECM Power Source Circuit»(ref-602700-S33657849822014030500000) . OK The ECM power source circuit is normal. HINT: If there is no abnormality in the ECM power source circuit, replace the ECM. NG --> REPAIR OR REPLACE ECM POWER SOURCE CIRCUIT OK --> See step 3
  3. REPLACE ECM. Refer to «REMOVAL [03/2012 - 07/2012]»(ref-602706-S36928064912014030500000)
  1. CHECK CAN BUS WIRE FOR DISCONNECTION (MAIN BODY ECU BRANCH WIRE) Turn the engine switch off. Disconnect the main body ECU connector. TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Main Body ECU) Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition F13-14 (CANH) - F13-13 (CANL) Engine switch off 54 to 69 ohms NG --> REPAIR OR REPLACE CAN BUS BRANCH WIRE OR CONNECTOR (MAIN BODY ECU BRANCH WIRE) OK: Go to next step
  2. CHECK HARNESS AND CONNECTOR (POWER SOURCE TERMINAL) Disconnect the instrument panel junction block connector. TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Instrument Panel Junction Block) Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition 2F-40 (BECU) - Body ground Always 11 to 14 V NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT) OK: Go to next step
  3. CHECK HARNESS AND CONNECTOR (GROUND TERMINAL) Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 2D-6 (GND1) - Body ground Always Below 1 ohms TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Instrument Panel Junction Block) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (GROUND CIRCUIT) OK --> See step 4
  4. REPLACE MULTIPLEX NETWORK BODY ECU (MAIN BODY ECU). Refer to «REMOVAL [03/2012 - ]»(ref-602764-S25276887612014030500000)
  1. CHECK OPEN IN CAN NO. 1 BUS WIRE (POWER MANAGEMENT CONTROL ECU BRANCH WIRE) Turn the engine switch off. Disconnect the power management control ECU connector. TEXT IN ILLUSTRATION *1 Rear view of wire harness connector (to Power Management Control ECU) Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Value F8-14 (CA1H) - F8-13 (CA1L) Engine switch off 54 to 69 ohms NG --> REPAIR OR REPLACE CAN NO. 1 BUS BRANCH WIRE OR CONNECTOR (POWER MANAGEMENT CONTROL ECU) OK: Go to next step
  2. CHECK HARNESS AND CONNECTOR (POWER SOURCE TERMINAL) Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Value F8-1 (AM22) - Body Ground Always 11 to 14 V F8-2 (AM21) - Body Ground Always 11 to 14 V TEXT IN ILLUSTRATION *1 Rear view of wire harness connector (to Power Management Control ECU) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE TERMINAL) OK: Go to next step
  3. CHECK HARNESS AND CONNECTOR (GROUND TERMINAL) Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Value F8-6 (GND) - Body Ground Always Below 1 ohms TEXT IN ILLUSTRATION *1 Rear view of wire harness connector (to Power Management Control ECU) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (GROUND TERMINAL) OK --> See step 4
  4. REPLACE POWER MANAGEMENT CONTROL ECU. Refer to «REMOVAL [03/2012 - ]»(ref-602764-S40427084882014030500000)
  1. CHECK CAN BUS WIRE FOR DISCONNECTION (COMBINATION METER BRANCH WIRE) Turn the engine switch off. Disconnect the combination meter connector. TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Combination Meter) Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition F16-23 (CANH) - F16-24 (CANL) Engine switch off 54 to 69 ohms NG --> REPAIR OR REPLACE CAN BUS BRANCH WIRE OR CONNECTOR (COMBINATION METER BRANCH WIRE) OK: Go to next step
  2. CHECK HARNESS AND CONNECTOR (POWER SOURCE TERMINAL) Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition F16-1 (IG+) - Body ground Engine switch on (IG) 11 to 14 V F16-13 (B) - Body ground Always 11 to 14 V TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Combination Meter) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT) OK: Go to next step
  3. CHECK HARNESS AND CONNECTOR (GROUND TERMINAL) Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition F16-6 (ES) - Body ground Always Below 1 ohms F15-16 (E2) - Body ground Always Below 1 ohms TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Combination Meter) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (GROUND CIRCUIT) OK --> See step 4
  4. REPLACE COMBINATION METER ASSEMBLY. Refer to «REMOVAL [03/2012 - 07/2012]»(ref-602722-S04788275262014030500000)
  1. CHECK CAN BUS WIRE FOR DISCONNECTION (CERTIFICATION ECU MAIN WIRE) Turn the engine switch off. Disconnect the certification ECU connector. TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Certification ECU) Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition F58-9 (CANH) - F58-10 (CANL) Engine switch off 108 to 132 ohms NG --> REPAIR OR REPLACE CAN BUS MAIN WIRE OR CONNECTOR (CERTIFICATION ECU MAIN WIRE) OK: Go to next step
  2. CHECK HARNESS AND CONNECTOR (POWER SOURCE TERMINAL) Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition F58-1 (+B) - Body ground Always 11 to 14 V F58-16 (IG) - Body ground Engine switch on (IG) 11 to 14 V TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Certification ECU) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT) OK: Go to next step
  3. CHECK HARNESS AND CONNECTOR (GROUND TERMINAL) Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition F58-15 (E) - Body ground Always Below 1 ohms TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Certification ECU) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (GROUND CIRCUIT) OK --> REPLACE SMART KEY ECU ASSEMBLY (CERTIFICATION ECU)
  1. CHECK CAN BUS WIRE FOR DISCONNECTION (CENTER AIRBAG SENSOR ASSEMBLY BRANCH WIRE) Turn the engine switch off. Disconnect the center airbag sensor assembly connector. TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Center Airbag Sensor Assembly) Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition F29-13 (CANH) - F29-22 (CANL) Engine switch off 54 to 69 ohms NG --> REPAIR OR REPLACE CAN BUS BRANCH WIRE OR CONNECTOR (CENTER AIRBAG SENSOR ASSEMBLY BRANCH WIRE) OK: Go to next step
  2. CHECK HARNESS AND CONNECTOR (POWER SOURCE TERMINAL) Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition F29-21 (IG2) - Body ground Engine switch on (IG) 11 to 14 V TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Center Airbag Sensor Assembly) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT) OK: Go to next step
  3. CHECK HARNESS AND CONNECTOR (GROUND TERMINAL) Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition F29-25 (E1) - Body ground Always Below 1 ohms F29-26 (E2) - Body ground Always Below 1 ohms TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Center Airbag Sensor Assembly) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (GROUND CIRCUIT) OK --> See step 4
  4. REPLACE CENTER AIRBAG SENSOR ASSEMBLY. Refer to «REMOVAL [03/2012 - 07/2012]»(ref-602553-S16790869692014030500000)
  1. CHECK FOR OPEN IN CAN BUS WIRE (DLC3 BRANCH WIRE) Turn the engine switch off. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition F17-6 (CANH) - F17-14 (CANL) Engine switch off 108 to 132 ohms TEXT IN ILLUSTRATION *1 DLC3 NOTE: When the measured value is 133 ohms or higher and a CAN communication system DTC is output, there may be a fault besides disconnection of the DLC3 branch wire. For that reason, troubleshooting should be performed again from How to Proceed with Troubleshooting after repairing the trouble area. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [03/2012 - 07/2012]»(ref-602741-S42866298922014030500000) . NG --> REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO DLC3 OK: Go to next step
  2. CHECK FOR OPEN IN CAN BUS WIRE (ECM) Disconnect the ECM connector. TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to ECM) Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition A43-10 (CANH) - A43-11 (CANL) Engine switch off 108 to 132 ohms NG --> See step 3 OK --> See step 7
  3. CHECK FOR OPEN IN CAN BUS WIRE (CERTIFICATION ECU) Reconnect the ECM connector. Disconnect the certification ECU connector. TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Certification ECU) Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition F58-9 (CANH) - F58-10 (CANL) Engine switch off 108 to 132 ohms NG --> See step 4 OK --> REPLACE CERTIFICATION ECU
  4. CHECK FOR OPEN IN CAN BUS WIRE (CAN NO. 1 J/C) Disconnect the CAN No. 1 junction connector. TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to CAN No. 1 Junction Connector) *2 to ECM Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition F70-6 (CANH) - F70-17 (CANL) Engine switch off 108 to 132 ohms NG --> REPAIR OR REPLACE CAN BUS MAIN WIRE OR CONNECTOR (CAN NO. 1 J/C - ECM) OK: Go to next step
  5. CHECK FOR OPEN IN CAN BUS WIRE (CAN NO. 1 J/C - CAN NO. 2 J/C) Reconnect the certification ECU connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition F70-7 (CANH) - F70-18 (CANL) Engine switch off 108 to 132 ohms TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to CAN No. 1 Junction Connector) *2 to CAN No. 2 Junction Connector NG --> See step 6 OK --> REPLACE CAN NO. 1 JUNCTION CONNECTOR
  6. CHECK FOR OPEN IN CAN BUS WIRE (CAN NO. 2 J/C) Reconnect the CAN No. 1 junction connector. Disconnect the CAN No. 2 junction connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition Connect to F71-2 (CANH) - F71-13 (CANL) Engine switch off 108 to 132 ohms Certification ECU F71-7 (CANH) - F71-18 (CANL) Engine switch off 108 to 132 ohms CAN No. 1 junction connector TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to CAN No. 2 Junction Connector) *2 to Certification ECU *3 to CAN No. 1 Junction Connector Result Result Proceed to OK A NG (to Certification ECU main wire) B NG (to CAN No. 1 junction connector main wire) C B --> REPAIR OR REPLACE CAN BUS MAIN WIRE OR CONNECTOR (CAN NO. 2 J/C - CERTIFICATION ECU) C --> REPAIR OR REPLACE CAN BUS MAIN WIRE OR CONNECTOR (CAN NO. 1 J/C - CAN NO. 2 J/C) A --> REPLACE CAN NO. 2 JUNCTION CONNECTOR
  7. REPLACE ECM. Refer to «REMOVAL [03/2012 - 07/2012]»(ref-602706-S36928064912014030500000)
  1. CHECK FOR OPEN IN CAN BUS WIRE (DLC3 BRANCH WIRE) Turn the engine switch off. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition F17-6 (CANH) - F17-14 (CANL) Engine switch off 108 to 132 ohms TEXT IN ILLUSTRATION *1 DLC3 NOTE: When the measured value is 133 ohms or higher and a CAN communication system DTC is output, there may be a fault besides disconnection of the DLC3 branch wire. For that reason, troubleshooting should be performed again from How to Proceed with Troubleshooting after repairing the trouble area. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [07/2012 - ]»(ref-602741-S23471534912014030500000) . NG --> REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO DLC3 OK: Go to next step
  2. CHECK FOR OPEN IN CAN BUS WIRE (ECM) Disconnect the ECM connector. TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to ECM) Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition A43-10 (CANH) - A43-11 (CANL) Engine switch off 108 to 132 ohms NG --> See step 3 OK --> See step 7
  3. CHECK FOR OPEN IN CAN BUS WIRE (CERTIFICATION ECU) Reconnect the ECM connector. Disconnect the certification ECU connector. TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Certification ECU) Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition F58-9 (CANH) - F58-10 (CANL) Engine switch off 108 to 132 ohms NG --> See step 4 OK --> REPLACE CERTIFICATION ECU
  4. CHECK FOR OPEN IN CAN BUS WIRE (CAN NO. 1 J/C) Disconnect the CAN No. 1 junction connector. TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to CAN No. 1 Junction Connector) *2 to ECM Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition F70-6 (CANH) - F70-17 (CANL) Engine switch off 108 to 132 ohms NG --> REPAIR OR REPLACE CAN BUS MAIN WIRE OR CONNECTOR (CAN NO. 1 J/C - ECM) OK: Go to next step
  5. CHECK FOR OPEN IN CAN BUS WIRE (CAN NO. 1 J/C - CAN NO. 2 J/C) Reconnect the certification ECU connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition F70-7 (CANH) - F70-18 (CANL) Engine switch off 108 to 132 ohms TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to CAN No. 1 Junction Connector) *2 to CAN No. 2 Junction Connector NG --> See step 6 OK --> REPLACE CAN NO. 1 JUNCTION CONNECTOR
  6. CHECK FOR OPEN IN CAN BUS WIRE (CAN NO. 2 J/C) Reconnect the CAN No. 1 junction connector. Disconnect the CAN No. 2 junction connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition Connect to F71-2 (CANH) - F71-13 (CANL) Engine switch off 108 to 132 ohms Certification ECU F71-7 (CANH) - F71-18 (CANL) Engine switch off 108 to 132 ohms CAN No. 1 junction connector TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to CAN No. 2 Junction Connector) *2 to Certification ECU *3 to CAN No. 1 Junction Connector Result Result Proceed to OK A NG (to Certification ECU main wire) B NG (to CAN No. 1 junction connector main wire) C B --> REPAIR OR REPLACE CAN BUS MAIN WIRE OR CONNECTOR (CAN NO. 2 J/C - CERTIFICATION ECU) C --> REPAIR OR REPLACE CAN BUS MAIN WIRE OR CONNECTOR (CAN NO. 1 J/C - CAN NO. 2 J/C) A --> REPLACE CAN NO. 2 JUNCTION CONNECTOR
  7. REPLACE ECM. Refer to «REMOVAL [07/2012 - ]»(ref-602706-S02492123622014030500000)
  1. CHECK FOR OPEN IN ONE SIDE OF CAN NO. 1 BUS BRANCH WIRE Confirm the systems (ECUs and sensors), which use CAN communication, equipped on the vehicle. Refer to «DIAGNOSIS SYSTEM [03/2012 - 07/2012]»(ref-602741-S17182073442014030500000) . Using the Techstream, select and perform "CAN Bus Check". Refer to «DIAGNOSIS SYSTEM [03/2012 - 07/2012]»(ref-602741-S17182073442014030500000) . Observe the screen for approximately 1 minute to check the ECUs and sensors that are not displayed on the screen and also those that repeatedly appear and disappear from the screen. Check that the ECUs and sensors, which are connected to the ECUs or sensors that are not displayed on the screen. Check that the ECUs and sensors, which repeatedly appeared and disappeared from the "CAN Bus Check" screen, are constantly displayed. NEXT --> See step 2
  2. GO TO CORRESPONDING COMMUNICATION STOP MODE. Refer to «PROBLEM SYMPTOMS TABLE [03/2012 - 07/2012]»(ref-602741-S15889540652014030500000)
  1. CHECK FOR OPEN IN ONE SIDE OF CAN NO. 1 BUS BRANCH WIRE Confirm the systems (ECUs and sensors), which use CAN communication, equipped on the vehicle. Refer to «DIAGNOSIS SYSTEM [07/2012 - ]»(ref-602741-S11538301432014030500000) . Using the Techstream, select and perform "CAN Bus Check". Refer to «DIAGNOSIS SYSTEM [07/2012 - ]»(ref-602741-S11538301432014030500000) . Observe the screen for approximately 1 minute to check the ECUs and sensors that are not displayed on the screen and also those that repeatedly appear and disappear from the screen. Check that the ECUs and sensors, which are connected to the ECUs or sensors that are not displayed on the screen. Check that the ECUs and sensors, which repeatedly appeared and disappeared from the "CAN Bus Check" screen, are constantly displayed. NEXT --> See step 2
  2. GO TO CORRESPONDING COMMUNICATION STOP MODE. Refer to «PROBLEM SYMPTOMS TABLE [07/2012 - ]»(ref-602741-S14445476152014030500000)

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