Home ReviewsRefund
Home/Lexus/GS/Lexus GS III рестайлинг (2007-2011)/Repair manual/Communication Devices/CAN Communication (Diagnostic Codes & Symptom Tests): Overv…
Contents Section: Communication Devices All sections

CAN Communication (Diagnostic Codes & Symptom Tests): Overview Lexus GS III рестайлинг

Communication Devices 73 illustrations ~8100 words

DESCRIPTION

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.)

DTC No.DTC Detection ConditionTrouble Area
U0122-732When either condition below is met: ABS/VSC/TRAC is not displayed on the "CAN Bus Check" screen of the Techstream Applies to "SKID CONTROL ECU COMMUNICATION STOP MODE" in the "DTC COMBINATION TABLE"Power source circuit of skid control ECU One side of CAN branch wire of other systems Skid control ECU branch wire or connector Skid control ECU

Scheme 244

Scheme 244: WIRING DIAGRAM
Scheme 244: WIRING DIAGRAM

Scheme 245

Scheme 245: PROCEDURE
Scheme 245: PROCEDURE

Scheme 246

Scheme 246
Scheme 246
  1. CHECK FOR DTC Connect the Techstream to the DLC3. Turn the power switch ON (IG). Clear the DTC. Check for DTC. HINT: When DTCs other than U0122 are output, inspect and repair the trouble areas indicated by those DTCs first. RESULT Result Proceed to DTC U0122 is not output A DTC U0122 is output B B --> GO TO ELECTRONICALLY CONTROLLED BRAKE SYSTEM A: Go to next step
  2. CHECK CAN BUS LINE FOR DISCONNECTION (SKID CONTROL ECU BRANCH WIRE) Disconnect the A15 skid control ECU connector. Measure the resistance of the wire harness side connector. Standard resistance Tester Connection Condition Specified Condition A15-9 (CANH) - A15-22 (CANL) Power 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 WIRE HARNESS (SKID CONTROL ECU - BATTERY AND BODY GROUND) Disconnect the A13 and A15 skid control ECU connectors. Measure the resistance of the wire harness side connectors. Standard resistance Tester Connection Specified Condition A13-1 (GND) - Body ground Below 1 ohms A15-1 (GND4) - Body ground Below 1 ohms Measure the voltage of the wire harness side connectors. Standard voltage Tester Connection Condition Specified Condition A13-29 (+B) - Body ground Always 10 to 14 V A13-16 (IG1) - Body ground Power switch ON (IG) 10 to 14 V A15-16 (IG2) - Body ground Power switch ON (IG) 10 to 14 V NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> REPLACE SKID CONTROL ECU
DTC No.DTC Detection ConditionTrouble Area
U0123-736When either condition below is met: "Yaw Rate / Deceleration Sensor" is not displayed on the "CAN Bus Check" screen of the Techstream Applies to "YAW RATE SENSOR COMMUNICATION STOP MODE" in the "DTC COMBINATION TABLE"Power source circuit of yaw rate sensor Yaw rate sensor branch wire or connector Yaw rate sensor

Scheme 247

Scheme 247: WIRING DIAGRAM
Scheme 247: WIRING DIAGRAM

Scheme 248

Scheme 248: PROCEDURE
Scheme 248: PROCEDURE

Scheme 249

Scheme 249
Scheme 249
  1. CHECK FOR DTC Connect the Techstream to the DLC3. Turn the power switch ON (IG). Clear the DTC. Check for DTC. RESULT Result Proceed to DTC U0123 is not output A DTC U0123 is output B B --> GO TO ELECTRONICALLY CONTROLLED BRAKE SYSTEM A: Go to next step
  2. CHECK CAN BUS LINE FOR DISCONNECTION (YAW RATE SENSOR BRANCH WIRE) Disconnect the K35 yaw rate sensor connector. Measure the resistance of the wire harness side connector. Standard resistance Tester Connection Condition Specified Condition K35-3 (CANH) - K35-2 (CANL) Power 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 WIRE HARNESS (YAW RATE SENSOR - BATTERY AND BODY GROUND) Disconnect the K35 yaw rate sensor connector. Measure the resistance of the wire harness side connector. Standard resistance Tester Connection Specified Condition K35-1 (GND) - Body ground Below 1 ohms Measure the voltage of the wire harness side connector. Standard voltage Tester Connection Condition Specified Condition K35-5 (IG) - Body ground Power switch ON (IG) 10 to 14 V NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> REPLACE YAW RATE SENSOR

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.)

DTC No.DTC Detection ConditionTrouble Area
U0126When either condition below is met: "Steering Angle Sensor" is not displayed on the "CAN Bus Check" screen of the Techstream Applies to "STEERING ANGLE SENSOR COMMUNICATION STOP MODE" in the "DTC COMBINATION TABLE"Power source circuit of steering angle sensor One side of CAN branch wire of other systems Steering angle sensor branch wire or connector Steering angle sensor

Scheme 250

Scheme 250: WIRING DIAGRAM
Scheme 250: WIRING DIAGRAM

Scheme 251

Scheme 251: PROCEDURE
Scheme 251: PROCEDURE

Scheme 252

Scheme 252
Scheme 252
  1. CHECK FOR DTC Connect the Techstream to the DLC3. Turn the power switch ON (IG). Clear the DTC. Check for DTC. HINT: When DTCs other than U0126 are output, inspect and repair the trouble areas indicated by those DTCs first. RESULT Result Proceed to DTC U0126 is not output A DTC U0126 is output B B --> GO TO ELECTRONICALLY CONTROLLED BRAKE SYSTEM A: Go to next step
  2. CHECK CAN BUS LINE FOR DISCONNECTION (STEERING ANGLE SENSOR BRANCH WIRE) Disconnect the K19 steering angle sensor connector. Measure the resistance of the wire harness side connector. Standard resistance Tester Connection Condition Specified Condition K19-10 (CANH) - K19-9 (CANL) Power 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 WIRE HARNESS (STEERING ANGLE SENSOR - BATTERY AND BODY GROUND) Disconnect the K19 steering angle sensor connector. Measure the resistance of the wire harness side connector. Standard resistance Tester Connection Specified Condition K19-2 (ESS) - Body ground Below 1 ohms Measure the voltage of the wire harness side connector. Standard voltage Tester Connection Condition Specified Condition K19-1 (IG) - Body ground Power switch ON (IG) 10 to 14 V NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> REPLACE STEERING ANGLE SENSOR
DTC No.DTC Detection ConditionTrouble Area
U0130When either condition below is met: "VGRS" is not displayed on the "CAN Bus Check" screen of the Techstream Applies to "STEERING CONTROL ECU COMMUNICATION STOP MODE" in the "DTC COMBINATION TABLE"Power source circuit of steering control ECU Steering control ECU branch wire or connector Steering control ECU

Scheme 253

Scheme 253: WIRING DIAGRAM
Scheme 253: WIRING DIAGRAM

Scheme 254

Scheme 254: PROCEDURE
Scheme 254: PROCEDURE

Scheme 255

Scheme 255
Scheme 255
  1. CHECK FOR DTC Connect the Techstream to the DLC3. Turn the power switch ON (IG). Clear the DTC. Check for DTC. RESULT Result Proceed to DTC U0130 is not output A DTC U0130 is output B B --> GO TO VARIABLE GEAR RATIO STEERING SYSTEM A: Go to next step
  2. CHECK CAN BUS LINE FOR DISCONNECTION (STEERING CONTROL ECU BRANCH WIRE) Disconnect the K70 steering control ECU connector. Measure the resistance of the wire harness side connector. Standard resistance Tester Connection Condition Specified Condition K70-9 (CANH) - K70-20 (CANL) Power 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 WIRE HARNESS (STEERING CONTROL ECU - BATTERY AND BODY GROUND) Disconnect the A40 and K69 steering control ECU connectors. Measure the resistance of the wire harness side connectors. Standard resistance Tester Connection Specified Condition A40-7 (PGND) - Body ground Below 1 ohms K69-8 (PGD2) - Body ground Below 1 ohms Measure the voltage of the wire harness side connector. Standard voltage Tester Connection Condition Specified Condition A40-10 (+B1) - Body ground Always 10 to 14 V A40-3 (IG) - Body ground Power switch ON (IG) 10 to 14 V A40-8 (PIG) - Body ground Power switch ON (IG) 10 to 14 V NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> REPLACE STEERING CONTROL ECU

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.)

DTC No.DTC Detection ConditionTrouble Area
U0131-433 U0131-434When either condition below is met: "EPS" is not displayed on the "CAN Bus Check" screen of the Techstream Applies to "POWER STEERING ECU COMMUNICATION STOP MODE" in the "DTC COMBINATION TABLE"Power source circuit of power steering ECU Power steering ECU branch wire or connector Power steering ECU One side of CAN branch wire

Scheme 256

Scheme 256: WIRING DIAGRAM
Scheme 256: WIRING DIAGRAM

Scheme 257

Scheme 257: PROCEDURE
Scheme 257: PROCEDURE

Scheme 258

Scheme 258
Scheme 258
  1. CHECK FOR DTC Connect the Techstream to the DLC3. Turn the power switch ON (IG). Clear the DTC. Check for DTC. HINT: When DTCs other than U0131 are output, inspect and repair the trouble areas indicated by those DTCs first. RESULT Result Proceed to DTC U0131 is not output A DTC U0131 is output B B --> GO TO ELECTRONIC POWER STEERING SYSTEM A: Go to next step
  2. CHECK CAN BUS LINE FOR DISCONNECTION (POWER STEERING ECU BRANCH WIRE) Disconnect the A23 power steering ECU connector. Measure the resistance of the wire harness side connector. Standard resistance Tester Connection Condition Specified Condition A23-2 (CANH) - A23-3 (CANL) Power switch OFF 54 to 69 ohms NG --> REPAIR OR REPLACE POWER STEERING ECU BRANCH WIRE OR CONNECTOR (CANH, CANL) OK: Go to next step
  3. CHECK WIRE HARNESS (POWER STEERING ECU - BATTERY AND BODY GROUND) Disconnect the A23 power steering ECU connector. Measure the resistance of the wire harness side connector. Standard resistance Tester Connection Specified Condition A23-5 (PGND) - Body ground Below 1 ohms Measure the voltage of the wire harness side connector. Standard voltage Tester Connection Condition Specified Condition A23-9 (IG) - Body ground Power switch ON (IG) 10 to 14 V NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> REPLACE POWER STEERING ECU

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.)

DTC No.DTC Detection ConditionTrouble Area
U0132When either condition below is met: "Air Suspension" is not displayed on the "CAN Bus Check" screen of the Techstream Applies to "ABSORBER CONTROL ECU COMMUNICATION STOP MODE" in the "DTC COMBINATION TABLE"Power source circuit of absorber control ECU Absorber control ECU branch wire or connector Absorber control ECU One side of CAN branch wire

Scheme 259

Scheme 259: WIRING DIAGRAM
Scheme 259: WIRING DIAGRAM

Scheme 260

Scheme 260: PROCEDURE
Scheme 260: PROCEDURE

Scheme 261

Scheme 261
Scheme 261
  1. CHECK FOR DTC Connect the Techstream to the DLC3. Turn the power switch ON (IG). Clear the DTC. Check for DTC. HINT: When DTCs other than U0132 are output, inspect and repair the trouble areas indicated by those DTCs first. RESULT Result Proceed to DTC U0132 is not output A DTC U0132 is output B B --> GO TO ADAPTIVE VARIABLE SUSPENSION SYSTEM A: Go to next step
  2. CHECK CAN BUS LINE FOR DISCONNECTION (ABSORBER CONTROL ECU BRANCH WIRE) Disconnect the K72 absorber control ECU connector. Measure the resistance of the wire harness side connector. Standard resistance Tester Connection Condition Specified Condition K72-7 (CANH) - K72-8 (CANL) Power switch OFF 54 to 69 ohms NG --> REPAIR OR REPLACE ABSORBER CONTROL ECU BRANCH WIRE OR CONNECTOR (CANH, CANL) OK: Go to next step
  3. CHECK WIRE HARNESS (ABSORBER CONTROL ECU - BATTERY AND BODY GROUND) Disconnect the K72 absorber control ECU connector. Measure the resistance of the wire harness side connector. Standard resistance Tester Connection Specified Condition K72-4 (GND) - Body ground Below 1 ohms Measure the voltage of the wire harness side connector. Standard voltage Tester Connection Condition Specified Condition K72-1 (B) - Body ground Power switch ON (IG) 10 to 14 V NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> REPLACE ABSORBER CONTROL ECU
DTC No.DTC Detection ConditionTrouble Area
U1003Lost Communication with CAN Gateway ModuleCAN No. 2 bus circuit Hybrid vehicle control ECU main wire and connector ECM branch wire or connector Skid control ECU branch wire or connector Yaw rate sensor branch wire or connector Steering angle sensor branch wire or connector Steering control ECU branch wire or connector Power steering ECU branch wire or connector Absorber control ECU branch wire or connector Front active stabilizer control ECU branch wire or connector Rear active stabilizer control ECU branch wire or connector Hybrid vehicle control ECU Skid control ECU Yaw rate sensor Steering angle sensor Steering control ECU Power steering ECU Absorber control ECU Front active stabilizer control ECU* Rear active stabilizer control ECU*

HINT

*: w/ Active stabilizer suspension system

Scheme 262

Scheme 262: WIRING DIAGRAM
Scheme 262: WIRING DIAGRAM

Scheme 263

Scheme 263
Scheme 263

Scheme 264

Scheme 264: PROCEDURE
Scheme 264: PROCEDURE

Scheme 265

Scheme 265
Scheme 265

Scheme 266

Scheme 266
Scheme 266

Scheme 267

Scheme 267
Scheme 267

Scheme 268

Scheme 268
Scheme 268

Scheme 269

Scheme 269
Scheme 269

Scheme 270

Scheme 270
Scheme 270

Scheme 271

Scheme 271
Scheme 271

Scheme 272

Scheme 272
Scheme 272

Scheme 273

Scheme 273
Scheme 273

Scheme 274

Scheme 274
Scheme 274

Scheme 275

Scheme 275
Scheme 275

Scheme 276

Scheme 276
Scheme 276

Scheme 277

Scheme 277
Scheme 277

Scheme 278

Scheme 278
Scheme 278

Scheme 279

Scheme 279
Scheme 279

Scheme 280

Scheme 280
Scheme 280

Scheme 281

Scheme 281
Scheme 281

Scheme 282

Scheme 282
Scheme 282

Scheme 283

Scheme 283
Scheme 283

Scheme 284

Scheme 284
Scheme 284

Scheme 285

Scheme 285
Scheme 285

Scheme 286

Scheme 286
Scheme 286

Scheme 287

Scheme 287
Scheme 287

Scheme 288

Scheme 288
Scheme 288

Scheme 289

Scheme 289
Scheme 289

Scheme 290

Scheme 290
Scheme 290

Scheme 291

Scheme 291
Scheme 291

Scheme 292

Scheme 292
Scheme 292

Scheme 293

Scheme 293
Scheme 293
  1. CHECK CAN BUS LINE (MAIN WIRE FOR DISCONNECTION, BUS LINES FOR SHORT CIRCUIT) Measure the resistance of the wire harness side connector. Standard resistance Tester Connection Specified Condition Resistance of Malfunction A54-45 (CAN+) - A54-44 (CAN-) 54 to 69 ohms Below 53 ohms: Short in line 70 ohms or more: Open in CAN main bus line A54-45 (CAN+) - A54-20 (BATT) 6 kohms or more Below 6 kohms: +B short A54-44 (CAN-) - A54-20 (BATT) 6 kohms or more Below 6 kohms: +B short A54-45 (CAN+) - A54-18 (E1) 200 ohms or more Below 200 ohms: Ground short A54-44 (CAN-) - A54-18 (E1) 200 ohms or more 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 50 B --> See step 12 A: Go to next step
  2. CHECK CAN MAIN WIRE FOR DISCONNECTION (CAN JUNCTION CONNECTOR RR - HYBRID VEHICLE CONTROL ECU) Disconnect the V38 CAN junction connector RR connector. Measure the resistance of the wire harness side connector. Standard resistance Tester Connection Condition Specified Condition V38-20 (CANH) - V38-14 (CANL) Power switch OFF 108 to 132 ohms NG --> See step 5 OK: Go to next step
  3. CONNECT CONNECTOR Reconnect the V38 CAN junction connector RR connector. NEXT: Go to next step
  4. CHECK CAN MAIN WIRE FOR DISCONNECTION (CAN JUNCTION CONNECTOR RR - CAN JUNCTION CONNECTOR RH) Disconnect the V37 CAN junction connector RR connector. Measure the resistance of the wire harness side connector. Standard resistance Tester Connection Condition Specified Condition V37-15 (CANH) - V37-19 (CANL) Power switch OFF 108 to 132 ohms OK --> See step 10 NG --> REPLACE CAN JUNCTION CONNECTOR RR
  5. CONNECT CONNECTOR Reconnect the V38 CAN junction connector RR connector. NEXT: Go to next step
  6. CHECK CAN MAIN WIRE FOR DISCONNECTION (CAN JUNCTION CONNECTOR LH - HYBRID VEHICLE CONTROL ECU) Disconnect the K3 CAN junction connector LH connector. Measure the resistance of the wire harness side connector. Standard resistance Tester Connection Condition Specified Condition K3-1 (CANH) - K3-2 (CANL) Power switch OFF 108 to 132 ohms NG --> See step 8 OK: Go to next step
  7. CHECK CAN MAIN WIRE FOR DISCONNECTION (CAN JUNCTION CONNECTOR - CAN JUNCTION CONNECTOR RR) Disconnect the K7 CAN junction connector LH connector. Measure the resistance of the wire harness side connector. Standard resistance Tester Connection Condition Specified Condition K7-1 (CANH) - K7-2 (CANL) Power switch OFF 108 to 132 ohms NG --> REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (CAN JUNCTION CONNECTOR LH - CAN JUNCTION CONNECTOR RR) OK --> REPLACE CAN JUNCTION CONNECTOR LH
  8. CONNECT CONNECTOR Reconnect the K3 CAN junction connector LH connector. NEXT: Go to next step
  9. CHECK CAN MAIN WIRE FOR DISCONNECTION (HYBRID VEHICLE CONTROL ECU - CAN JUNCTION CONNECTOR LH) Disconnect the A54 hybrid vehicle control ECU connector. Measure the resistance of the wire harness side connector. Standard resistance Tester Connection Condition Specified Condition A54-45 (CAN+) - A54-44 (CAN-) Power switch OFF 108 to 132 ohms NG --> REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (HYBRID VEHICLE CONTROL ECU - CAN JUNCTION CONNECTOR LH) OK --> REPLACE HYBRID VEHICLE CONTROL ECU
  10. CONNECT CONNECTOR Reconnect the V37 CAN junction connector RR connector. NEXT: Go to next step
  11. CHECK CAN MAIN WIRE FOR DISCONNECTION (CAN JUNCTION CONNECTOR RH - CAN JUNCTION CONNECTOR RR) Disconnect the K81 CAN junction connector RH connector. Measure the resistance of the wire harness side connector. Standard resistance Tester Connection Condition Specified Condition K81-1 (CANH) - K81-2 (CANL) Power switch OFF 108 to 132 ohms NG --> REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (CAN JUNCTION CONNECTOR RH - CAN JUNCTION CONNECTOR RR) OK --> REPLACE CAN JUNCTION CONNECTOR RH
  12. CHECK CAN BUS LINES FOR SHORT (CAN JUNCTION CONNECTOR LH SIDE) Disconnect the V38 CAN junction connector RR connector. Measure the resistance of the wire harness side connectors. Standard resistance Tester Connection Specified Condition A54-45 (CAN+) - A54-44 (CAN-) 108 to 132 ohms A54-45 (CAN+) - K16-4 (CG) 200 ohms or more A54-44 (CAN-) - K16-4 (CG) 200 ohms or more A54-45 (CAN+) - K16-16 (BAT) 6 kohms or more A54-44 (CAN-) - K16-16 (BAT) 6 kohms or more OK --> See step 30 NG: Go to next step
  13. CHECK CAN BUS LINES FOR SHORT (CAN JUNCTION CONNECTOR LH - CAN JUNCTION CONNECTOR RR) Disconnect the K7 CAN junction connector LH connector. Measure the resistance of the wire harness side connectors. RESULT Tester Connection Condition Measured Resistance Proceed to K7-1 (CANH) - K7-2 (CANL) Power switch OFF 1 ohms or more OK K7-1 (CANH) - K7-2 (CANL) Power switch OFF Below 1 ohms NG K7-1 (CANH) - K16-4 (CG) Power switch OFF 1 ohms or more OK K7-2 (CANL) - K16-4 (CG) Power switch OFF 1 ohms or more OK K7-1 (CANH) - K16-4 (CG) Power switch OFF Below 1 ohms NG K7-2 (CANL) - K16-4 (CG) Power switch OFF Below 1 ohms NG K7-1 (CANH) - K16-16 (BAT) Power switch OFF 1 ohms or more OK K7-2 (CANL) - K16-16 (BAT) Power switch OFF 1 ohms or more OK K7-1 (CANH) - K16-16 (BAT) Power switch OFF Below 1 ohms NG K7-2 (CANL) - K16-16 (BAT) Power switch OFF Below 1 ohms NG NG --> REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (CAN JUNCTION CONNECTOR LH - CAN JUNCTION CONNECTOR RR) OK: Go to next step
  14. CONNECT CONNECTOR Reconnect the V38 CAN junction connector RR connector. Reconnect the K7 CAN junction connector LH connector. NEXT: Go to next step
  15. CHECK CAN BUS LINES FOR SHORT (CAN JUNCTION CONNECTOR LH - ECM) Disconnect the K4 CAN junction connector LH connector. Measure the resistance of the wire harness side connectors. RESULT Tester Connection Condition Measured Resistance Proceed to K4-1 (CANH) - K4-2 (CANL) Power switch OFF 1 ohms or more OK K4-1 (CANH) - K4-2 (CANL) Power switch OFF Below 1 ohms NG K4-1 (CANH) - K16-4 (CG) Power switch OFF 1 ohms or more OK K4-2 (CANL) - K16-4 (CG) Power switch OFF 1 ohms or more OK K4-1 (CANH) - K16-4 (CG) Power switch OFF Below 1 ohms NG K4-2 (CANL) - K16-4 (CG) Power switch OFF Below 1 ohms NG K4-1 (CANH) - K16-16 (BAT) Power switch OFF 1 ohms or more OK K4-2 (CANL) - K16-16 (BAT) Power switch OFF 1 ohms or more OK K4-1 (CANH) - K16-16 (BAT) Power switch OFF Below 1 ohms NG K4-2 (CANL) - K16-16 (BAT) Power switch OFF Below 1 ohms NG NG --> See step 20 OK: Go to next step
  16. CHECK CAN BUS LINES FOR SHORT (CAN JUNCTION CONNECTOR LH - SKID CONTROL ECU) Disconnect the K2 CAN junction connector LH connector. Measure the resistance of the wire harness side connectors. RESULT Tester Connection Condition Measured Resistance Proceed to K2-1 (CANH) - K2-2 (CANL) Power switch OFF 1 ohms or more OK K2-1 (CANH) - K2-2 (CANL) Power switch OFF Below 1 ohms NG K2-1 (CANH) - K16-4 (CG) Power switch OFF 1 ohms or more OK K2-2 (CANL) - K16-4 (CG) Power switch OFF 1 ohms or more OK K2-1 (CANH) - K16-4 (CG) Power switch OFF Below 1 ohms NG K2-2 (CANL) - K16-4 (CG) Power switch OFF Below 1 ohms NG K2-1 (CANH) - K16-16 (BAT) Power switch OFF 1 ohms or more OK K2-2 (CANL) - K16-16 (BAT) Power switch OFF 1 ohms or more OK K2-1 (CANH) - K16-16 (BAT) Power switch OFF Below 1 ohms NG K2-2 (CANL) - K16-16 (BAT) Power switch OFF Below 1 ohms NG NG --> See step 22 OK: Go to next step
  17. CHECK CAN BUS LINES FOR SHORT (CAN JUNCTION CONNECTOR LH - YAW RATE SENSOR) Disconnect the K6 CAN junction connector LH connector. Measure the resistance of the wire harness side connectors. RESULT Tester Connection Condition Measured Resistance Proceed to K6-1 (CANH) - K6-2 (CANL) Power switch OFF 1 ohms or more OK K6-1 (CANH) - K6-2 (CANL) Power switch OFF Below 1 ohms NG K6-1 (CANH) - K16-4 (CG) Power switch OFF 1 ohms or more OK K6-2 (CANL) - K16-4 (CG) Power switch OFF 1 ohms or more OK K6-1 (CANH) - K16-4 (CG) Power switch OFF Below 1 ohms NG K6-2 (CANL) - K16-4 (CG) Power switch OFF Below 1 ohms NG K6-1 (CANH) - K16-16 (BAT) Power switch OFF 1 ohms or more OK K6-2 (CANL) - K16-16 (BAT) Power switch OFF 1 ohms or more OK K6-1 (CANH) - K16-16 (BAT) Power switch OFF Below 1 ohms NG K6-2 (CANL) - K16-16 (BAT) Power switch OFF Below 1 ohms NG NG --> See step 24 OK: Go to next step
  18. CHECK CAN BUS LINES FOR SHORT (CAN JUNCTION CONNECTOR LH - STEERING ANGLE SENSOR) Disconnect the K8 CAN junction connector LH connector. Measure the resistance of the wire harness side connectors. RESULT Tester Connection Condition Measured Resistance Proceed to K8-1 (CANH) - K8-2 (CANL) Power switch OFF 1 ohms or more OK K8-1 (CANH) - K8-2 (CANL) Power switch OFF Below 1 ohms NG K8-1 (CANH) - K16-4 (CG) Power switch OFF 1 ohms or more OK K8-2 (CANL) - K16-4 (CG) Power switch OFF 1 ohms or more OK K8-1 (CANH) - K16-4 (CG) Power switch OFF Below 1 ohms NG K8-2 (CANL) - K16-4 (CG) Power switch OFF Below 1 ohms NG K8-1 (CANH) - K16-16 (BAT) Power switch OFF 1 ohms or more OK K8-2 (CANL) - K16-16 (BAT) Power switch OFF 1 ohms or more OK K8-1 (CANH) - K16-16 (BAT) Power switch OFF Below 1 ohms NG K8-2 (CANL) - K16-16 (BAT) Power switch OFF Below 1 ohms NG NG --> See step 26 OK: Go to next step
  19. CHECK CAN BUS LINES FOR SHORT (CAN JUNCTION CONNECTOR - HYBRID VEHICLE CONTROL ECU) Disconnect the K3 CAN junction connector LH connector. Measure the resistance of the wire harness side connectors. RESULT Tester Connection Condition Measured Resistance Proceed to K3-1 (CANH) - K3-2 (CANL) Power switch OFF 1 ohms or more OK K3-1 (CANH) - K3-2 (CANL) Power switch OFF Below 1 ohms NG K3-1 (CANH) - K16-4 (CG) Power switch OFF 1 ohms or more OK K3-2 (CANL) - K16-4 (CG) Power switch OFF 1 ohms or more OK K3-1 (CANH) - K16-4 (CG) Power switch OFF Below 1 ohms NG K3-2 (CANL) - K16-4 (CG) Power switch OFF Below 1 ohms NG K3-1 (CANH) - K16-16 (BAT) Power switch OFF 1 ohms or more OK K3-2 (CANL) - K16-16 (BAT) Power switch OFF 1 ohms or more OK K3-1 (CANH) - K16-16 (BAT) Power switch OFF Below 1 ohms NG K3-2 (CANL) - K16-16 (BAT) Power switch OFF Below 1 ohms NG NG --> See step 28 OK --> REPAIR OR REPLACE CAN JUNCTION CONNECTOR LH
  20. CONNECT CONNECTOR Reconnect the K4 CAN junction connector LH connector. NEXT: Go to next step
  21. CHECK CAN BUS LINES FOR SHORT (ECM) Disconnect the A53 ECM connector. Measure the resistance of the wire harness side connectors. RESULT Tester Connection Condition Measured Resistance Proceed to A53-22 (CAN+) - A53-21 (CAN-) Power switch OFF 1 ohms or more OK A53-22 (CAN+) - A53-21 (CAN-) Power switch OFF Below 1 ohms NG A53-22 (CAN+) - K16-4 (CG) Power switch OFF 1 ohms or more OK A53-21 (CAN-) - K16-4 (CG) Power switch OFF 1 ohms or more OK A53-22 (CAN+) - K16-4 (CG) Power switch OFF Below 1 ohms NG A53-21 (CAN-) - K16-4 (CG) Power switch OFF Below 1 ohms NG A53-22 (CAN+) - K16-16 (BAT) Power switch OFF 1 ohms or more OK A53-21 (CAN-) - K16-16 (BAT) Power switch OFF 1 ohms or more OK A53-22 (CAN+) - K16-16 (BAT) Power switch OFF Below 1 ohms NG A53-21 (CAN-) - K16-16 (BAT) Power switch OFF Below 1 ohms NG NG --> REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO ECM (CAN+, CAN-) OK --> REPLACE ECM
  22. CONNECT CONNECTOR Reconnect the K2 CAN junction connector LH connector. NEXT: Go to next step
  23. CHECK CAN BUS LINES FOR SHORT (SKID CONTROL ECU) Disconnect the A15 skid control ECU connector. Measure the resistance of the wire harness side connectors. RESULT Tester Connection Condition Measured Resistance Proceed to A15-9 (CANH) - A15-22 (CANL) Power switch OFF 1 ohms or more OK A15-9 (CANH) - A15-22 (CANL) Power switch OFF Below 1 ohms NG A15-9 (CANH) - K16-4 (CG) Power switch OFF 1 ohms or more OK A15-22 (CANL) - K16-4 (CG) Power switch OFF 1 ohms or more OK A15-9 (CANH) - K16-4 (CG) Power switch OFF Below 1 ohms NG A15-22 (CANL) - K16-4 (CG) Power switch OFF Below 1 ohms NG A15-9 (CANH) - K16-16 (BAT) Power switch OFF 1 ohms or more OK A15-22 (CANL) - K16-16 (BAT) Power switch OFF 1 ohms or more OK A15-9 (CANH) - K16-16 (BAT) Power switch OFF Below 1 ohms NG A15-22 (CANL) - K16-16 (BAT) Power switch OFF Below 1 ohms NG NG --> REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO SKID CONTROL ECU (CANH, CANL) OK --> REPLACE SKID CONTROL ECU
  24. CONNECT CONNECTOR Reconnect the K6 CAN junction connector LH connector. NEXT: Go to next step
  25. CHECK CAN BUS LINES FOR SHORT (YAW RATE SENSOR) Disconnect the K35 yaw rate sensor connector. Measure the resistance of the wire harness side connectors. RESULT Tester Connection Condition Measured Resistance Proceed to K35-3 (CANH) - K35-2 (CANL) Power switch OFF 1 ohms or more OK K35-3 (CANH) - K35-2 (CANL) Power switch OFF Below 1 ohms NG K35-3 (CANH) - K16-4 (CG) Power switch OFF 1 ohms or more OK K35-2 (CANL) - K16-4 (CG) Power switch OFF 1 ohms or more OK K35-3 (CANH) - K16-4 (CG) Power switch OFF Below 1 ohms NG K35-2 (CANL) - K16-4 (CG) Power switch OFF Below 1 ohms NG K35-3 (CANH) - K16-16 (BAT) Power switch OFF 1 ohms or more OK K35-2 (CANL) - K16-16 (BAT) Power switch OFF 1 ohms or more OK K35-3 (CANH) - K16-16 (BAT) Power switch OFF Below 1 ohms NG K35-2 (CANL) - K16-16 (BAT) Power switch OFF Below 1 ohms NG NG --> REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO YAW RATE SENSOR (CANH, CANL) OK --> REPLACE YAW RATE SENSOR
  26. CONNECT CONNECTOR Reconnect the K8 CAN junction connector LH connector. NEXT: Go to next step
  27. CHECK CAN BUS LINES FOR SHORT (STEERING ANGLE SENSOR) Disconnect the K19 steering angle sensor connector. Measure the resistance of the wire harness side connectors. RESULT Tester Connection Condition Measured Resistance Proceed to K19-10 (CANH) - K19-9 (CANL) Power switch OFF 1 ohms or more OK K19-10 (CANH) - K19-9 (CANL) Power switch OFF Below 1 ohms NG K19-10 (CANH) - K16-4 (CG) Power switch OFF 1 ohms or more OK K19-9 (CANL) - K16-4 (CG) Power switch OFF 1 ohms or more OK K19-10 (CANH) - K16-4 (CG) Power switch OFF Below 1 ohms NG K19-9 (CANL) - K16-4 (CG) Power switch OFF Below 1 ohms NG K19-10 (CANH) - K16-16 (BAT) Power switch OFF 1 ohms or more OK K19-9 (CANL) - K16-16 (BAT) Power switch OFF 1 ohms or more OK K19-10 (CANH) - K16-16 (BAT) Power switch OFF Below 1 ohms NG K19-9 (CANL) - K16-16 (BAT) Power switch OFF Below 1 ohms NG NG --> REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO STEERING ANGLE SENSOR OK --> REPLACE STEERING ANGLE SENSOR
  28. CONNECT CONNECTOR Reconnect the K3 CAN junction connector LH connector. NEXT: Go to next step
  29. CHECK CAN BUS LINES FOR SHORT (HYBRID VEHICLE CONTROL ECU) Disconnect the A54 hybrid vehicle control ECU connector. Measure the resistance of the wire harness side connectors. RESULT Tester Connection Condition Measured Resistance Proceed to A54-45 (CAN+) - A54-44 (CAN-) Power switch OFF 1 ohms or more OK A54-45 (CAN+) - A54-44 (CAN-) Power switch OFF Below 1 ohms NG A54-45 (CAN+) - K16-4 (CG) Power switch OFF 1 ohms or more OK A54-44 (CAN-) - K16-4 (CG) Power switch OFF 1 ohms or more OK A54-45 (CAN+) - K16-4 (CG) Power switch OFF Below 1 ohms NG A54-44 (CAN-) - K16-4 (CG) Power switch OFF Below 1 ohms NG A54-45 (CAN+) - K16-16 (BAT) Power switch OFF 1 ohms or more OK A54-44 (CAN-) - K16-16 (BAT) Power switch OFF 1 ohms or more OK A54-45 (CAN+) - K16-16 (BAT) Power switch OFF Below 1 ohms NG A54-44 (CAN-) - K16-16 (BAT) Power switch OFF Below 1 ohms NG NG --> REPAIR OR REPLACE CAN MAIN WIRE CONNECTED TO HYBRID VEHICLE CONTROL ECU (CAN JUNCTION CONNECTOR LH - HYBRID VEHICLE CONTROL ECU) OK --> REPLACE HYBRID VEHICLE CONTROL ECU
  30. CONNECT CONNECTOR Reconnect the V38 CAN junction connector RR connector. NEXT: Go to next step
  31. CHECK CAN BUS LINES FOR SHORT (CAN JUNCTION CONNECTOR RH SIDE) Disconnect the V37 CAN junction connector RR connector. Measure the resistance of the wire harness side connectors. Standard resistance Tester Connection Specified Condition A54-45 (CAN+) - A54-44 (CAN-) 108 to 132 ohms A54-45 (CAN+) - K16-4 (CG) 200 ohms or more A54-44 (CAN-) - K16-4 (CG) 200 ohms or more A54-45 (CAN+) - K16-16 (BAT) 6 kohms or more A54-44 (CAN-) - K16-16 (BAT) 6 kohms or more RESULT Result Proceed to NG A OK (w/ Active stabilizer suspension system) B OK (w/o Active stabilizer suspension system) C C --> REPAIR OR REPLACE CAN JUNCTION CONNECTOR RR B --> See step 46 A: Go to next step
  32. CHECK CAN BUS LINES FOR SHORT (CAN JUNCTION CONNECTOR RR - CAN JUNCTION CONNECTOR RH) Disconnect the K81 CAN junction connector RH connector. Measure the resistance of the wire harness side connectors. RESULT Tester Connection Condition Measured Resistance Proceed to K81-1 (CANH) - K81-2 (CANL) Power switch OFF 1 ohms or more OK K81-1 (CANH) - K81-2 (CANL) Power switch OFF Below 1 ohms NG K81-1 (CANH) - K16-4 (CG) Power switch OFF 1 ohms or more OK K81-2 (CANL) - K16-4 (CG) Power switch OFF 1 ohms or more OK K81-1 (CANH) - K16-4 (CG) Power switch OFF Below 1 ohms NG K81-2 (CANL) - K16-4 (CG) Power switch OFF Below 1 ohms NG K81-1 (CANH) - K16-16 (BAT) Power switch OFF 1 ohms or more OK K81-2 (CANL) - K16-16 (BAT) Power switch OFF 1 ohms or more OK K81-1 (CANH) - K16-16 (BAT) Power switch OFF Below 1 ohms NG K81-2 (CANL) - K16-16 (BAT) Power switch OFF Below 1 ohms NG NG --> REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (CAN JUNCTION CONNECTOR RR - CAN JUNCTION CONNECTOR RH) OK: Go to next step
  33. CONNECT CONNECTOR Reconnect the V37 CAN junction connector RR connector. Reconnect the K81 CAN junction connector RH connector. NEXT: Go to next step
  34. CHECK CAN BUS LINES FOR SHORT (CAN JUNCTION CONNECTOR RH - FRONT ACTIVE STABILIZER CONTROL ECU) NOTE: For vehicle without active stabilizer suspension system, go to "CHECK CAN BUS LINES FOR SHORT (CAN JUNCTION CONNECTOR RH - STEERING CONTROL ECU)". Disconnect the K79 CAN junction connector RH connector. Measure the resistance of the wire harness side connectors. RESULT Tester Connection Condition Measured Resistance Proceed to K79-1 (CANH) - K79-2 (CANL) Power switch OFF 1 ohms or more OK K79-1 (CANH) - K79-2 (CANL) Power switch OFF Below 1 ohms NG K79-1 (CANH) - K16-4 (CG) Power switch OFF 1 ohms or more OK K79-2 (CANL) - K16-4 (CG) Power switch OFF 1 ohms or more OK K79-1 (CANH) - K16-4 (CG) Power switch OFF Below 1 ohms NG K79-2 (CANL) - K16-4 (CG) Power switch OFF Below 1 ohms NG K79-1 (CANH) - K16-16 (BAT) Power switch OFF 1 ohms or more OK K79-2 (CANL) - K16-16 (BAT) Power switch OFF 1 ohms or more OK K79-1 (CANH) - K16-16 (BAT) Power switch OFF Below 1 ohms NG K79-2 (CANL) - K16-16 (BAT) Power switch OFF Below 1 ohms NG NG --> See step 38 OK: Go to next step
  35. CHECK CAN BUS LINES FOR SHORT (CAN JUNCTION CONNECTOR RH - STEERING CONTROL ECU) Disconnect the K75 CAN junction connector RH connector. Measure the resistance of the wire harness side connectors. RESULT Tester Connection Condition Measured Resistance Proceed to K75-1 (CANH) - K75-2 (CANL) Power switch OFF 1 ohms or more OK K75-1 (CANH) - K75-2 (CANL) Power switch OFF Below 1 ohms NG K75-1 (CANH) - K16-4 (CG) Power switch OFF 1 ohms or more OK K75-2 (CANL) - K16-4 (CG) Power switch OFF 1 ohms or more OK K75-1 (CANH) - K16-4 (CG) Power switch OFF Below 1 ohms NG K75-2 (CANL) - K16-4 (CG) Power switch OFF Below 1 ohms NG K75-1 (CANH) - K16-16 (BAT) Power switch OFF 1 ohms or more OK K75-2 (CANL) - K16-16 (BAT) Power switch OFF 1 ohms or more OK K75-1 (CANH) - K16-16 (BAT) Power switch OFF Below 1 ohms NG K75-2 (CANL) - K16-16 (BAT) Power switch OFF Below 1 ohms NG NG --> See step 40 OK: Go to next step
  36. CHECK CAN BUS LINES FOR SHORT (CAN JUNCTION CONNECTOR RH - POWER STEERING ECU) Disconnect the K80 CAN junction connector RH connector. Measure the resistance of the wire harness side connectors. RESULT Tester Connection Condition Measured Resistance Proceed to K80-1 (CANH) - K80-2 (CANL) Power switch OFF 1 ohms or more OK K80-1 (CANH) - K80-2 (CANL) Power switch OFF Below 1 ohms NG K80-1 (CANH) - K16-4 (CG) Power switch OFF 1 ohms or more OK K80-2 (CANL) - K16-4 (CG) Power switch OFF 1 ohms or more OK K80-1 (CANH) - K16-4 (CG) Power switch OFF Below 1 ohms NG K80-2 (CANL) - K16-4 (CG) Power switch OFF Below 1 ohms NG K80-1 (CANH) - K16-16 (BAT) Power switch OFF 1 ohms or more OK K80-2 (CANL) - K16-16 (BAT) Power switch OFF 1 ohms or more OK K80-1 (CANH) - K16-16 (BAT) Power switch OFF Below 1 ohms NG K80-2 (CANL) - K16-16 (BAT) Power switch OFF Below 1 ohms NG NG --> See step 42 OK: Go to next step
  37. CHECK CAN BUS LINES FOR SHORT (CAN JUNCTION CONNECTOR RH - ABSORBER CONTROL ECU) Disconnect the K76 CAN junction connector RH connector. Measure the resistance of the wire harness side connectors. RESULT Tester Connection Condition Measured Resistance Proceed to K76-1 (CANH) - K76-2 (CANL) Power switch OFF 1 ohms or more OK K76-1 (CANH) - K76-2 (CANL) Power switch OFF Below 1 ohms NG K76-1 (CANH) - K16-4 (CG) Power switch OFF 1 ohms or more OK K76-2 (CANL) - K16-4 (CG) Power switch OFF 1 ohms or more OK K76-1 (CANH) - K16-4 (CG) Power switch OFF Below 1 ohms NG K76-2 (CANL) - K16-4 (CG) Power switch OFF Below 1 ohms NG K76-1 (CANH) - K16-16 (BAT) Power switch OFF 1 ohms or more OK K76-2 (CANL) - K16-16 (BAT) Power switch OFF 1 ohms or more OK K76-1 (CANH) - K16-16 (BAT) Power switch OFF Below 1 ohms NG K76-2 (CANL) - K16-16 (BAT) Power switch OFF Below 1 ohms NG NG --> See step 44 OK --> REPAIR OR REPLACE CAN JUNCTION CONNECTOR RH
  38. CONNECT CONNECTOR Reconnect the K79 CAN junction connector RH connector. NEXT: Go to next step
  39. CHECK CAN BUS LINES FOR SHORT (FRONT ACTIVE STABILIZER CONTROL ECU) Disconnect the A58 front active stabilizer control ECU connector. Measure the resistance of the wire harness side connectors. RESULT Tester Connection Condition Measured Resistance Proceed to A58-2 (CANH) - A58-3 (CANL) Power switch OFF 1 ohms or more OK A58-2 (CANH) - A58-3 (CANL) Power switch OFF Below 1 ohms NG A58-2 (CANH) - K16-4 (CG) Power switch OFF 1 ohms or more OK A58-3 (CANL) - K16-4 (CG) Power switch OFF 1 ohms or more OK A58-2 (CANH) - K16-4 (CG) Power switch OFF Below 1 ohms NG A58-3 (CANL) - K16-4 (CG) Power switch OFF Below 1 ohms NG A58-2 (CANH) - K16-16 (BAT) Power switch OFF 1 ohms or more OK A58-3 (CANL) - K16-16 (BAT) Power switch OFF 1 ohms or more OK A58-2 (CANH) - K16-16 (BAT) Power switch OFF Below 1 ohms NG A58-3 (CANL) - K16-16 (BAT) Power switch OFF Below 1 ohms NG NG --> REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO FRONT ACTIVE STABILIZER CONTROL ECU (CANH, CANL) OK --> REPLACE FRONT ACTIVE STABILIZER CONTROL ECU
  40. CONNECT CONNECTOR Reconnect the K75 CAN junction connector RH connector. NEXT: Go to next step
  41. CHECK CAN BUS LINES FOR SHORT (STEERING CONTROL ECU) Disconnect the K70 steering control ECU connector. Measure the resistance of the wire harness side connectors. RESULT Tester Connection Condition Measured Resistance Proceed to K70-9 (CANH) - K70-20 (CANL) Power switch OFF 1 ohms or more OK K70-9 (CANH) - K70-20 (CANL) Power switch OFF Below 1 ohms NG K70-9 (CANH) - K16-4 (CG) Power switch OFF 1 ohms or more OK K70-20 (CANL) - K16-4 (CG) Power switch OFF 1 ohms or more OK K70-9 (CANH) - K16-4 (CG) Power switch OFF Below 1 ohms NG K70-20 (CANL) - K16-4 (CG) Power switch OFF Below 1 ohms NG K70-9 (CANH) - K16-16 (BAT) Power switch OFF 1 ohms or more OK K70-20 (CANL) - K16-16 (BAT) Power switch OFF 1 ohms or more OK K70-9 (CANH) - K16-16 (BAT) Power switch OFF Below 1 ohms NG K70-20 (CANL) - K16-16 (BAT) Power switch OFF Below 1 ohms NG NG --> REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO STEERING CONTROL ECU (CANH, CANL) OK --> REPLACE STEERING CONTROL ECU
  42. CONNECT CONNECTOR Reconnect the K80 CAN junction connector RH connector. NEXT: Go to next step
  43. CHECK CAN BUS LINES FOR SHORT (POWER STEERING ECU) Disconnect the A23 power steering ECU connector. Measure the resistance of the wire harness side connectors. RESULT Tester Connection Condition Measured Resistance Proceed to A23-2 (CANH) - A23-3 (CANL) Power switch OFF 1 ohms or more OK A23-2 (CANH) - A23-3 (CANL) Power switch OFF Below 1 ohms NG A23-2 (CANH) - K16-4 (CG) Power switch OFF 1 ohms or more OK A23-3 (CANL) - K16-4 (CG) Power switch OFF 1 ohms or more OK A23-2 (CANH) - K16-4 (CG) Power switch OFF Below 1 ohms NG A23-3 (CANL) - K16-4 (CG) Power switch OFF Below 1 ohms NG A23-2 (CANH) - K16-16 (BAT) Power switch OFF 1 ohms or more OK A23-3 (CANL) - K16-16 (BAT) Power switch OFF 1 ohms or more OK A23-2 (CANH) - K16-16 (BAT) Power switch OFF Below 1 ohms NG A23-3 (CANL) - K16-16 (BAT) Power switch OFF Below 1 ohms NG NG --> REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO POWER STEERING ECU (CANH, CANL) OK --> REPLACE POWER STEERING ECU
  44. CONNECT CONNECTOR Reconnect the K76 CAN junction connector RH connector. NEXT: Go to next step
  45. CHECK CAN BUS LINES FOR SHORT (ABSORBER CONTROL ECU) Disconnect the K72 absorber control ECU connector. Measure the resistance of the wire harness side connectors. RESULT Tester Connection Condition Measured Resistance Proceed to K72-7 (CANH) - K72-8 (CANL) Power switch OFF 1 ohms or more OK K72-7 (CANH) - K72-8 (CANL) Power switch OFF Below 1 ohms NG K72-7 (CANH) - K16-4 (CG) Power switch OFF 1 ohms or more OK K72-8 (CANL) - K16-4 (CG) Power switch OFF 1 ohms or more OK K72-7 (CANH) - K16-4 (CG) Power switch OFF Below 1 ohms NG K72-8 (CANL) - K16-4 (CG) Power switch OFF Below 1 ohms NG K72-7 (CANH) - K16-16 (BAT) Power switch OFF 1 ohms or more OK K72-8 (CANL) - K16-16 (BAT) Power switch OFF 1 ohms or more OK K72-7 (CANH) - K16-16 (BAT) Power switch OFF Below 1 ohms NG K72-8 (CANL) - K16-16 (BAT) Power switch OFF Below 1 ohms NG NG --> REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO ABSORBER CONTROL ECU (CANH, CANL) OK --> REPLACE ABSORBER CONTROL ECU
  46. CONNECT CONNECTOR Reconnect the V37 CAN junction connector RR connector. NEXT: Go to next step
  47. CHECK CAN BUS LINES FOR SHORT (CAN JUNCTION CONNECTOR RR - REAR ACTIVE STABILIZER CONTROL ECU) Disconnect the V38 CAN junction connector RR connector. Measure the resistance of the wire harness side connectors. RESULT Tester Connection Condition Measured Resistance Proceed to V38-21 (CANH) - V38-12 (CANL) Power switch OFF 1 ohms or more OK V38-21 (CANH) - V38-12 (CANL) Power switch OFF Below 1 ohms NG V38-21 (CANH) - K16-4 (CG) Power switch OFF 1 ohms or more OK V38-12 (CANL) - K16-4 (CG) Power switch OFF 1 ohms or more OK V38-21 (CANH) - K16-4 (CG) Power switch OFF Below 1 ohms NG V38-12 (CANL) - K16-4 (CG) Power switch OFF Below 1 ohms NG V38-21 (CANH) - K16-16 (BAT) Power switch OFF 1 ohms or more OK V38-12 (CANL) - K16-16 (BAT) Power switch OFF 1 ohms or more OK V38-21 (CANH) - K16-16 (BAT) Power switch OFF Below 1 ohms NG V38-12 (CANL) - K16-16 (BAT) Power switch OFF Below 1 ohms NG OK --> REPAIR OR REPLACE CAN JUNCTION CONNECTOR RR NG: Go to next step
  48. CONNECT CONNECTOR Reconnect the V38 CAN junction connector RR connector. NEXT: Go to next step
  49. CHECK CAN BUS LINES FOR SHORT (REAR ACTIVE STABILIZER CONTROL ECU) Disconnect the y1 rear active stabilizer control ECU connector. Measure the resistance of the wire harness side connectors. RESULT Tester Connection Condition Measured Resistance Proceed to y1-2 (CANH) - y1-3 (CANL) Power switch OFF 1 ohms or more OK y1-2 (CANH) - y1-3 (CANL) Power switch OFF Below 1 ohms NG y1-2 (CANH) - K16-4 (CG) Power switch OFF 1 ohms or more OK y1-3 (CANL) - K16-4 (CG) Power switch OFF 1 ohms or more OK y1-2 (CANH) - K16-4 (CG) Power switch OFF Below 1 ohms NG y1-3 (CANL) - K16-4 (CG) Power switch OFF Below 1 ohms NG y1-2 (CANH) - K16-16 (BAT) Power switch OFF 1 ohms or more OK y1-3 (CANL) - K16-16 (BAT) Power switch OFF 1 ohms or more OK y1-2 (CANH) - K16-16 (BAT) Power switch OFF Below 1 ohms NG y1-3 (CANL) - K16-16 (BAT) Power switch OFF Below 1 ohms NG NG --> REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO REAR ACTIVE STABILIZER CONTROL ECU (CANH, CANL) OK --> REPLACE REAR ACTIVE STABILIZER CONTROL ECU
  50. CHECK CAN BUS LINES FOR DISCONNECTION Recheck for DTC. NEXT --> GO TO DTC CHART
DTC No.DTC Detection ConditionTrouble Area
U1108When either condition below is met: "Front Active Stabilizer" is not displayed on the "CAN Bus Check" screen of the Techstream Applies to "FRONT ACTIVE STABILIZER CONTROL ECU COMMUNICATION STOP MODE" in the "DTC COMBINATION TABLE"Power source circuit of front active stabilizer control ECU Front active stabilizer control ECU branch wire or connector Front active stabilizer control ECU

HINT

For vehicles with active stabilizer suspension system only.

Scheme 294

Scheme 294: WIRING DIAGRAM
Scheme 294: WIRING DIAGRAM

Scheme 295

Scheme 295: PROCEDURE
Scheme 295: PROCEDURE

Scheme 296

Scheme 296
Scheme 296
  1. CHECK FOR DTC Connect the Techstream to the DLC3. Turn the power switch ON (IG). Clear the DTC. Check for DTC. RESULT Result Proceed to DTC U1108 is not output A DTC U1108 is output B B --> GO TO ACTIVE STABILIZER SUSPENSION SYSTEM A: Go to next step
  2. CHECK CAN BUS LINE FOR DISCONNECTION (FRONT ACTIVE STABILIZER CONTROL ECU BRANCH WIRE) Disconnect the A58 front active stabilizer control ECU connector. Measure the resistance of the wire harness side connector. Standard resistance Tester Connection Condition Specified Condition A58-2 (CANH) - A58-3 (CANL) Power switch OFF 54 to 69 ohms NG --> REPAIR OR REPLACE FRONT ACTIVE STABILIZER CONTROL ECU BRANCH WIRE OR CONNECTOR (CANH, CAHL) OK: Go to next step
  3. CHECK WIRE HARNESS (FRONT ACTIVE STABILIZER CONTROL ECU - BATTERY AND BODY GROUND) Disconnect the A58 front active stabilizer control ECU connector. Measure the resistance of the wire harness side connector. Standard resistance Tester Connection Specified Condition A58-5 (PGND) - Body ground Below 1 ohms Measure the voltage of the wire harness side connector. Standard voltage Tester Connection Condition Specified Condition A58-9 (IG) - Body ground Power switch ON (IG) 10 to 14 V NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> REPLACE FRONT ACTIVE STABILIZER CONTROL ECU
DTC No.DTC Detection ConditionTrouble Area
U1109When either condition below is met: "Rear Active Stabilizer" is not displayed on the "CAN Bus Check" screen of the Techstream Applies to "REAR ACTIVE STABILIZER CONTROL ECU COMMUNICATION STOP MODE" in the "DTC COMBINATION TABLE"Power source circuit of rear active stabilizer control ECU Rear active stabilizer control ECU branch wire or connector Rear active stabilizer control ECU

HINT

For vehicles with active stabilizer suspension system only.

Scheme 297

Scheme 297: WIRING DIAGRAM
Scheme 297: WIRING DIAGRAM

Scheme 298

Scheme 298: PROCEDURE
Scheme 298: PROCEDURE

Scheme 299

Scheme 299
Scheme 299
  1. CHECK FOR DTC Connect the Techstream to the DLC3. Turn the power switch ON (IG). Clear the DTC. Check for DTC. RESULT Result Proceed to DTC U1109 is not output A DTC U1109 is output B B --> GO TO ACTIVE STABILIZER SUSPENSION SYSTEM A: Go to next step
  2. CHECK CAN BUS LINE FOR DISCONNECTION (REAR ACTIVE STABILIZER CONTROL ECU BRANCH WIRE) Disconnect the y1 rear active stabilizer control ECU connector. Measure the resistance of the wire harness side connector. Standard resistance Tester Connection Condition Specified Condition y1-2 (CANH) - y1-3 (CANL) Power switch OFF 54 to 69 ohms NG --> REPAIR OR REPLACE REAR ACTIVE STABILIZER CONTROL ECU BRANCH WIRE OR CONNECTOR (CANH, CANL) OK: Go to next step
  3. CHECK WIRE HARNESS (REAR ACTIVE STABILIZER CONTROL ECU - BATTERY AND BODY GROUND) Disconnect the y1 rear active stabilizer control ECU connector. Measure the resistance of the wire harness side connector. Standard resistance Tester Connection Specified Condition y1-5 (PGND) - Body ground Below 1 ohms Measure the voltage of the wire harness side connector. Standard voltage Tester Connection Condition Specified Condition y1-9 (IG) - Body ground Power switch ON (IG) 10 to 14 V NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> REPLACE REAR ACTIVE STABILIZER CONTROL ECU
DTC No.DTC Detection ConditionTrouble Area
HYBRID VEHICLE CONTROL ECUWhen either condition below is met: "Hybrid Control" is not displayed on the "CAN Bus Check" screen of the Techstream Applies to "HYBRID VEHICLE CONTROL ECU COMMUNICATION STOP MODE" in the "DTC COMBINATION TABLE"Power source circuit of hybrid vehicle control ECU Hybrid vehicle control ECU main wire or connector Hybrid vehicle control ECU

Scheme 300

Scheme 300: WIRING DIAGRAM
Scheme 300: WIRING DIAGRAM

Scheme 301

Scheme 301: PROCEDURE
Scheme 301: PROCEDURE
  1. CHECK WIRE HARNESS (HYBRID VEHICLE CONTROL ECU - BATTERY AND BODY GROUND) Disconnect the A54 and E84 hybrid vehicle control ECU connectors. Measure the resistance of the wire harness side connectors. Standard resistance Tester Connection Specified Condition A54-18 (E1) - Body ground Below 1 ohms A54-104 (EC) - Body ground Below 1 ohms E84-50 (E02) - Body ground Below 1 ohms E84-51 (E01) - Body ground Below 1 ohms E84-52 (E12) - Body ground Below 1 ohms Measure the voltage of the wire harness side connector. Standard voltage Tester Connection Condition Specified Condition A54-20 (BATT) - Body ground Always 10 to 14 V A54-46 (+B) - Body ground Battery's positive (+) voltage is applied to terminal A54-21 (MREL) 10 to 14 V NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> REPLACE HYBRID VEHICLE CONTROL ECU
DTC No.DTC Detection ConditionTrouble Area
DISTANCE CONTROL ECU COMMUNICATION STOP MODEWhen either condition below is met: "Cruise Control (ACC)" is not displayed on the "CAN Bus Check" screen of the Techstream Applies to "DISTANCE CONTROL ECU COMMUNICATION STOP MODE" in the "DTC COMBINATION TABLE"Power source or distance control ECU Distance control ECU branch wire or connector Distance control ECU One side of CAN branch wire

HINT

For vehicles with dynamic radar cruise control system only.

Scheme 302

Scheme 302: WIRING DIAGRAM
Scheme 302: WIRING DIAGRAM

Scheme 303

Scheme 303: PROCEDURE
Scheme 303: PROCEDURE

Scheme 304

Scheme 304
Scheme 304
  1. CHECK CAN BUS LINE FOR DISCONNECTION (DISTANCE CONTROL ECU BRANCH WIRE) Disconnect the K13 distance control ECU connector. Measure the resistance of the wire harness side connector. Standard resistance Tester Connection Condition Specified Condition K13-8 (CANH) - K13-9 (CANL) Power switch OFF 54 to 69 ohms NG --> REPAIR OR REPLACE DISTANCE CONTROL ECU BRANCH WIRE OR CONNECTOR (CANH, CANL) OK: Go to next step
  2. CHECK WIRE HARNESS (DISTANCE CONTROL ECU - BATTERY AND BODY GROUND) Disconnect the K13 distance control ECU connector. Measure the resistance of the wire harness side connector. Standard resistance Tester Connection Specified Condition K13-10 (SGND) - Body ground Below 1 ohms K13-12 (GND) - Body ground Below 1 ohms Measure the voltage of the wire harness side connector. Standard voltage Tester Connection Condition Specified Condition K13-1 (B) - Body ground Power switch ON (IG) 10 to 14 V NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> REPLACE DISTANCE CONTROL ECU
DTC No.DTC Detection ConditionTrouble Area
SEAT BELT CONTROL ECU COMMUNICATION STOP MODEWhen either condition below is met: "Pre-collision" is not displayed on the "CAN Bus Check" of the Techstream Applies to "SEAT BELT CONTROL ECU COMMUNICATION STOP MODE" in the "DTC COMBINATION TABLE"Power source or seat belt control ECU Seat belt control ECU branch wire or connector Seat belt control ECU One side of CAN branch wire

Scheme 305

Scheme 305: WIRING DIAGRAM
Scheme 305: WIRING DIAGRAM

Scheme 306

Scheme 306: PROCEDURE
Scheme 306: PROCEDURE

Scheme 307

Scheme 307
Scheme 307
  1. CHECK CAN BUS LINE FOR DISCONNECTION (SEAT BELT CONTROL ECU BRANCH WIRE) Disconnect the seat belt control ECU connector. Measure the resistance of the wire harness side connector. Standard resistance Tester Connection Condition Specified Condition V43-1 (CANH) - V43-2 (CANL) Power 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
  2. CHECK WIRE HARNESS (SEAT BELT CONTROL ECU - BATTERY AND BODY GROUND) Disconnect the seat belt control ECU connectors. Measure the resistance of the wire harness side connector. Standard resistance Tester Connection Specified Condition V31-8 (PGND) - Body ground Below 1 ohms Measure the voltage of the wire harness side connector. Standard voltage Tester Connection Condition Specified Condition V43-8 (IG) - Body ground Power switch ON (IG) 10 to 14 V NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> REPLACE SEAT BELT CONTROL ECU
DTC No.DTC Detection ConditionTrouble Area
CLEARANCE WARNING ECU COMMUNICATION STOP MODEWhen either condition below is met: "Clearance Sonar" is not displayed on the "CAN Bus Check" of the Techstream Applies to "CLEARANCE WARNING ECU COMMUNICATION STOP MODE" in the "DTC COMBINATION TABLE"Power source or clearance warning ECU Clearance warning ECU branch wire or connector Clearance warning ECU One side of CAN branch wire

Scheme 308

Scheme 308: WIRING DIAGRAM
Scheme 308: WIRING DIAGRAM

Scheme 309

Scheme 309: PROCEDURE
Scheme 309: PROCEDURE

Scheme 310

Scheme 310
Scheme 310
  1. CHECK CAN BUS LINE FOR DISCONNECTION (CLEARANCE WARNING ECU BRANCH WIRE) Disconnect the A38 clearance warning ECU connector. Measure the resistance of the wire harness side connector. Standard resistance Tester Connection Condition Specified Condition A38-23 (R1) - A38-24 (R2) Power switch OFF 54 to 69 ohms NG --> REPAIR OR REPLACE CLEARANCE WARNING ECU BRANCH WIRE OR CONNECTOR (CANH, CANL) OK: Go to next step
  2. CHECK WIRE HARNESS (CLEARANCE WARNING ECU - BATTERY AND BODY GROUND) Disconnect the A38 clearance warning ECU connector. Measure the resistance of the wire harness side connector. Standard resistance Tester Connection Specified Condition A38-27 (E) - Body ground Below 1 ohms Measure the voltage of the wire harness side connector. Standard voltage Tester Connection Condition Specified Condition A38-8 (IG) - Body ground Power switch OFF 10 to 14 V NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> REPLACE CLEARANCE WARNING ECU
DTC No.DTC Detection ConditionTrouble Area
GATEWAY ECU COMMUNICATION STOP MODEWhen either condition below is met: "Gateway" is not displayed on the "CAN Bus Check" of the Techstream Applies to "GATEWAY ECU COMMUNICATION STOP MODE" in the "DTC COMBINATION TABLE"Power source or network gateway ECU Network gateway ECU branch wire or connector Network gateway ECU One side of CAN branch wire

Scheme 311

Scheme 311: WIRING DIAGRAM
Scheme 311: WIRING DIAGRAM

Scheme 312

Scheme 312: PROCEDURE
Scheme 312: PROCEDURE

Scheme 313

Scheme 313
Scheme 313
  1. CHECK CAN BUS LINE FOR DISCONNECTION (NETWORK GATEWAY ECU BRANCH WIRE) Disconnect the K66 network gateway ECU connector. Measure the resistance of the wire harness side connector. Standard resistance Tester Connection Condition Specified Condition K66-17 (CA1H) - K66-18 (CA1L) Power switch OFF 54 to 69 ohms NG --> REPAIR OR REPLACE NETWORK GATEWAY ECU BRANCH WIRE OR CONNECTOR (CANH, CANL) OK: Go to next step
  2. CHECK WIRE HARNESS (NETWORK GATEWAY ECU - BATTERY AND BODY GROUND) Disconnect the K66 network gateway ECU connector. Measure the resistance of the wire harness side connector. Standard resistance Tester Connection Specified Condition K66-24 (GND) - Body ground Below 1 ohms Measure the voltage of the wire harness side connector. Standard voltage Tester Connection Condition Specified Condition K66-10 (BATT) - Body ground Always 10 to 14 V K66-1 (IG) - Body ground Power switch ON (IG) 10 to 14 V NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> REPLACE NETWORK GATEWAY ECU
DTC No.DTC Detection ConditionTrouble Area
ECM COMMUNICATION STOP MODEWhen either condition below is met: "Engine" is not displayed on the "CAN Bus Check" of the Techstream Applies to "ECM COMMUNICATION STOP MODE" in the "DTC COMBINATION TABLE"Power source or ECM ECM main wire or connector (CAN No. 1) ECM ECM branch wire or connector (CAN No. 2)

Scheme 314

Scheme 314: WIRING DIAGRAM
Scheme 314: WIRING DIAGRAM

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

SymptomTrouble Area
Resistance between terminals 6 (CANH) and 14 (CANL) of DLC3 is 69 ohms or more.CAN main wire and connector CAN junction connector center CAN junction connector RR Hybrid vehicle control ECU ECM

Scheme 315

Scheme 315: WIRING DIAGRAM
Scheme 315: WIRING DIAGRAM

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.

SymptomTrouble Area
Resistance between terminals 6 (CANH) and 14 (CANL) of DLC3 is below 54 ohms.Hybrid vehicle control ECU Network gateway ECU Distance control ECU* Clearance warning ECU Seat belt control ECU ECM CAN junction connector center CAN junction connector RR

HINT

*: w/ dynamic radar cruise control system.

Scheme 316

Scheme 316: WIRING DIAGRAM
Scheme 316: WIRING DIAGRAM

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.

SymptomTrouble Area
There is resistance between terminals 6 (CANH) and 16 (BAT) or terminals 14 (CANL) and 16 (BAT) of DLC3.Hybrid vehicle control ECU Network gateway ECU Distance control ECU* Clearance warning ECU Seat belt control ECU ECM

HINT

*: w/ dynamic radar cruise control 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.

SymptomTrouble Area
There is resistance between terminals 6 (CANH) and 4 (CG) or terminals 14 (CANL) and 4 (CG) of DLC3.Hybrid vehicle control ECU Network gateway ECU Distance control ECU* Clearance warning ECU Seat belt control ECU ECM

HINT

*: w/ dynamic radar cruise control system.

If 2 or more ECUs and / or sensors do not appear on the Techstream's "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.)

SymptomTrouble Area
2 or more ECUs and / or sensors do not appear on Techstream "CAN Bus Check" screen.One side of CAN branch wire is open Hybrid vehicle control ECU Network gateway ECU Distance control ECU* Clearance warning ECU Seat belt control ECU

HINT

*: w/ dynamic radar cruise control system.

More articles — CAN Communication (Diagnostic Codes & Symptom Tests)