Note
When replacing the brake booster with master cylinder (skid control ECU), sensor, etc., make sure that the power switch is turned off (lock), the stop light switch is off, and 2 minutes have elapsed since the driver's door was closed.
Tech Tips
If no abnormality is found when inspecting parts, inspect the skid control ECU and ground points for poor connections.
If a trouble code is displayed during the DTC check, check the circuit indicated by the DTC. For details of each code, refer to the page for the respective "DTC Code" in the DTC chart.
When 2 or more DTCs are detected, perform circuit inspections one by one until the problem is identified.
Inspect the fuses and relays before inspecting the trouble areas as shown in the table below.
| DTC Code | Detection Item | INF Code | See page |
|---|---|---|---|
| C1235 | Foreign Object is Attached on Tip of Front Speed Sensor RH | 541 | |
| C1236 | Foreign Object is Attached on Tip of Front Speed Sensor LH | 542 | |
| C1238 | Foreign Object is Attached on Tip of Rear Speed Sensor RH | 543 | |
| C1239 | Foreign Object is Attached on Tip of Rear Speed Sensor LH | 544 | |
| C1243 | Deceleration Sensor Stuck | 561 562 563 564 565 |
|
| C1244 | Open or Short Circuit in Deceleration Sensor Circuit | 571 | |
| C1245 | Abnormal Output in Deceleration Sensor | 581 | |
| C1336 | Zero Point Calibration of Deceleration Sensor undone | - | |
| C1381 | Abnormal Power Supply Voltage in Yaw Rate and/or Deceleration Sensor | 601 | |
| C1442 | Invalid Data Received from Deceleration Sensor | 572 | |
| C1464 | Front Speed Sensor RH Circuit | 501 502 503 504 506 507 508 |
|
| C1465 | Front Speed Sensor LH Circuit | 511 512 513 514 516 517 518 |
|
| C1466 | Rear Speed Sensor RH Circuit | 521 522 523 524 526 527 528 |
|
| C1467 | Rear Speed Sensor LH Circuit | 531 532 533 534 536 537 538 |
|
| U0124 | Lost Communication With Lateral Acceleration Sensor Module | 591 592 |
| DTC Code | Detection Item | INF Code | See page |
|---|---|---|---|
| C1210 | Zero Point Calibration of Yaw Rate Sensor undone | - | |
| C1231 | Steering Angle Sensor Circuit | 701 702 703 |
|
| C1234 | Yaw Rate Sensor | 711 712 713 714 |
|
| C1290 | Abnormal Zero Point of Steering Angle Sensor | 751 | |
| C1310 | HV System Malfunction | - | |
| C1439 | Steering Angle Sensor Initialization Incomplete | 752 | |
| C1440 | Steering Angle Sensor Unusual Bank Angle Detected | - | |
| C1443 | Invalid Data Received from Yaw Rate Sensor | 715 | |
| C1445 | Vehicle Driven with Steering Angle Sensor not Initialized | 753 | |
| U0123 | Lost Communication With Yaw Rate Sensor Module | 731 732 |
|
| U0126 | Lost Communication With Steering Angle Sensor Module | 741 742 |
| DTC Code | Detection Item | INF Code | See page |
|---|---|---|---|
| C1202 | Master Reservoir Level Malfunction | 371 | |
| C1203 | ECM Communication Circuit | - | |
| C1211 | SLA Linear Solenoid | 21 22 23 24 |
|
| C1212 | SLR Linear Solenoid | 31 32 33 34 |
|
| C1214 | Hydraulic Control System Malfunction | 431 432 433 434 435 436 437 438 |
|
| C1225 | SA1 Solenoid Circuit | 41 42 43 44 |
|
| C1226 | SA2 Solenoid Circuit | 51 52 53 54 |
|
| C1227 | SA3 Solenoid Circuit | 61 62 63 64 |
|
| C1228 | STR Solenoid Circuit | 71 72 73 74 |
|
| C1242 | Open Circuit in IG1/IG2 Power Source Circuit | 111 112 |
|
| C1246 | Master Cylinder Pressure Sensor | 201 202 203 204 207 |
|
| C1247 | Stroke Sensor | 211 212 213 214 215 218 219 223 |
|
| C1249 | Open Circuit in Stop Light Switch Circuit | 231 | |
| C1252 | Brake Booster Pump Motor on Time Abnormally Long | 311 | |
| C1253 | Pump Motor Relay | 321 322 323 324 325 326 327 328 329 |
|
| C1256 | Accumulator Low Pressure | 341 | |
| C1257 | Power Supply Drive Circuit | 361 362 |
|
| C1259 | HV Control System Regenerative Malfunction | - | |
| C1300 | Skid Control ECU Malfunction | - | |
| C1311 | Open Circuit in Main Relay 1 | 1 | |
| C1312 | Short Circuit in Main Relay 1 | 2 | |
| C1345 | Linear Solenoid Valve Offset Learning undone | - | |
| C1352 | FR Solenoid | 11 12 |
|
| C1353 | RR Solenoid | 15 16 |
|
| C1356 | FL Solenoid | 13 14 |
|
| C1357 | RL Solenoid | 17 18 |
|
| C1364 | Wheel Cylinder Pressure Sensor | 421 422 423 424 426 |
|
| C1365 | Accumulator Pressure Sensor | 331 332 333 334 |
|
| C1368 | Linear Solenoid Valve Offset | - | |
| C1391 | Abnormal Leak in Accumulator | 351 | |
| C1392 | Zero Point Calibration of Stroke Sensor undone | - | |
| C1451 | Motor Drive Permission Malfunction | - | |
| U0073 | Control Module Communication Bus Off | 461 462 463 464 465 466 |
|
| U0120 | Lost Communication With Starter / Generator Control Module | 471 | |
| U0293 | Lost Communication With Hybrid Vehicle Control System | 411 412 413 |
| DTC Code | Detection Item | INF Code | See page |
|---|---|---|---|
| C1241 | Low or High Power Supply Voltage | 101*1 102*1 551*2 552*2 553*2 |
*1: Electronically Controlled Brake System DTC
*2: ABS DTC
| DTC Code | Detection Item | INF Code | See page |
|---|---|---|---|
| C1271 | Low Output Signal of Front Speed Sensor RH (Test Mode DTC) | - | |
| C1272 | Low Output Signal of Front Speed Sensor LH (Test Mode DTC) | - | |
| C1273 | Low Output Signal of Rear Speed Sensor RH (Test Mode DTC) | - | |
| C1274 | Low Output Signal of Rear Speed Sensor LH (Test Mode DTC) | - | |
| C1275 | Abnormal Change in Output Signal of Front Speed Sensor RH (Test Mode DTC) | - | |
| C1276 | Abnormal Change in Output Signal of Front Speed Sensor LH (Test Mode DTC) | - | |
| C1277 | Abnormal Change in Output Signal of Rear Speed Sensor RH (Test Mode DTC) | - | |
| C1278 | Abnormal Change in Output Signal of Rear Speed Sensor LH (Test Mode DTC) | - | |
| C1279 | Abnormal Output Voltage in Deceleration Sensor (Test Mode DTC) | - | |
| C1281 | Abnormal Output in Master Cylinder Pressure Sensor (Test Mode DTC) | - |
| DTC Code | Detection Item | INF Code | See page |
|---|---|---|---|
| C1346 | Abnormal Learning of Stroke Sensor Zero Point (Test Mode DTC) | - |