ANTI-LOCK BRAKE SYSTEM DIAGNOSTIC TROUBLE CODE CHART
Note
Turn the ignition switch off before removing parts.
Tech Tips
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If no abnormality is found when inspecting parts, inspect the skid control ECU (brake actuator assembly) and ground points for poor contact.
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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.
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When 2 or more DTCs are detected, perform circuit inspection one by one until the problem is identified.
| DTC Code | Detection Item | See page |
|---|---|---|
| C1203 | ECM Communication Circuit Malfunction | |
| C1225 | SM Solenoid Circuit | |
| C1241 | Low Power Supply Voltage Malfunction | |
| C1249 | Open in Stop Light Switch Circuit | |
| C1265 | Vacuum Sensor | |
| C1300 | Skid Control ECU Malfunction | |
| C1337 | Diameter of the Tire is not Uniform | |
| C1361 | Short in ABS Motor Fail Safe Relay Circuit | |
| C1401*1 | Front Speed Sensor RH Malfunction | |
| C1402*1 | Front Speed Sensor LH Malfunction | |
| C1403*1 | Rear Speed Sensor RH Malfunction | |
| C1404*1 | Rear Speed Sensor LH Malfunction | |
| C1405*1 | Open or Short in Front Speed Sensor RH Circuit | |
| C1406*1 | Open or Short in Front Speed Sensor LH Circuit | |
| C1407*1 | Open or Short in Rear Speed Sensor RH Circuit | |
| C1408*1 | Open or Short in Rear Speed Sensor LH Circuit | |
| C1413*1 | Front Speed Sensor RH Output Malfunction | |
| C1414*1 | Front Speed Sensor LH Output Malfunction | |
| C1415*1 | Rear Speed Sensor RH Output Malfunction | |
| C1416*1 | Rear Speed Sensor LH Output Malfunction | |
| C1417 | High Power Supply Voltage Malfunction | |
| C1421 | Open or Short in Master Cylinder Pressure Sensor | |
| C1422 | Master Cylinder Pressure Sensor Zero Point High Malfunction | |
| C1423 | Master Cylinder Pressure Sensor Zero Point Low Malfunction | |
| C1424 | Master Cylinder Pressure Sensor Output Malfunction | |
| C1425 | Open in Stop Light Switch Circuit | |
| C1427*1 | Motor Malfunction | |
| C1428 | Motor Circuit Malfunction | |
| C1468 | SFR Solenoid Circuit | |
| C1469 | SFL Solenoid Circuit | |
| C146A | SRR Solenoid Circuit | |
| C146B | SRL Solenoid Circuit | |
| C146C | Open in ABS Motor Relay Circuit | |
| C146D | Short in ABS Motor Relay Circuit | |
| C146E*1 | Open in ABS Solenoid Relay Circuit | |
| C146F | Short in ABS Solenoid Relay Circuit | |
| U0073 | Control Module Communication Bus OFF |
*1: Even after the trouble areas are repaired, the ABS warning light will not go off unless the following operations are performed:
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Drive the vehicle at 20 km/h (12 mph) for 30 seconds or more and check that the ABS warning light goes off.
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Clear the DTC.
Tech Tips
In some cases, the intelligent tester cannot be used when the ABS warning light remains on.
| DTC Code | Detection Item | 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) | |
| C1281 | Master Cylinder Pressure Sensor Output Malfunction (Test Mode DTC) | |
| C1285 | Vacuum Sensor Output Malfunction (Test Mode DTC) |