ANTI-LOCK BRAKE SYSTEM DIAGNOSTIC TROUBLE CODE CHART
Note
Turn the ignition switch off before removing parts.
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If no abnormality is found when inspecting parts, inspect the skid control ECU 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.
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Inspect the fuse and relay before investigating the trouble areas as shown in the table below.
| DTC Code | Detection Item | Trouble Area | See page |
|---|---|---|---|
| C0200/31 (*1) | Front Speed Sensor RH Circuit | 1. Front speed sensor RH 2. Speed sensor circuit 3. Speed sensor rotor 4. Sensor installation 5. Skid control ECU |
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| C0205/32 (*1) | Front Speed Sensor LH Circuit | 1. Front speed sensor LH 2. Speed sensor circuit 3. Speed sensor rotor 4. Sensor installation 5. Skid control ECU |
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| C0210/33 (*1) | Rear Speed Sensor RH Circuit | 1. Rear speed sensor RH 2. Speed sensor circuit 3. Speed sensor rotor 4. Sensor installation 5. Skid control ECU |
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| C0215/34 (*1) | Rear Speed Sensor LH Circuit | 1. Rear speed sensor LH 2. Speed sensor circuit 3. Speed sensor rotor 4. Sensor installation 5. Skid control ECU |
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| C0226/21 | SFR Solenoid Circuit | 1. Brake actuator assembly 2. SFRH or SFRR circuit 3. Skid control ECU |
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| C0236/22 | SFL Solenoid Circuit | 1. Brake actuator assembly 2. SFLH or SFLR circuit 3. Skid control ECU |
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| C0246/23 | SRR Solenoid Circuit | 1. Brake actuator assembly 2. SRRH or SRRR circuit 3. Skid control ECU |
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| C0256/24 | SRL Solenoid Circuit | 1. Brake actuator assembly 2. SRLH or SRLR circuit 3. Skid control ECU |
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| C0273/13 | Open in ABS Motor Relay Circuit | 1. ABS fuse 2. ABS MTR MAIN relay 3. ABS MTR MAIN relay circuit 4. Brake actuator assembly 5. Skid control ECU |
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| C0274/14 | Short to B+ in ABS Motor Relay Circuit | 1. ABS fuse 2. ABS MTR MAIN relay 3. ABS MTR MAIN relay circuit 4. Brake actuator assembly 5. Skid control ECU |
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| C0278/11 | Open in ABS Solenoid Relay Circuit | 1. ABS SOL fuse 2. ABS SOL MAIN relay 3. ABS SOL MAIN relay circuit 4. Skid control ECU |
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| C0279/12 | Short to B+ in ABS Solenoid Relay Circuit | 1. ABS SOL fuse 2. ABS SOL MAIN relay 3. ABS SOL MAIN relay circuit 4. Skid control ECU |
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| C1225/25 | SMC Solenoid Circuit | 1. Brake actuator assembly 2. SMC1 or SMC2 circuit 3. Skid control ECU |
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| C1227/27 | SRM Solenoid Circuit | 1. Brake actuator assembly 2. SRM1 or SRM2 circuit 3. Skid control ECU |
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| C1235/35 | Foreign Object is Attached on Tip of Front Speed Sensor RH | 1. Front speed sensor RH 2. Speed sensor rotor 3. Sensor installation 4. Skid control ECU |
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| C1236/36 | Foreign Object is Attached on Tip of Front Speed Sensor LH | 1. Front speed sensor LH 2. Speed sensor rotor 3. Sensor installation 4. Skid control ECU |
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| C1238/38 | Foreign Object is Attached on Tip of Rear Speed Sensor RH | 1. Rear speed sensor RH 2. Speed sensor rotor 3. Sensor installation 4. Skid control ECU |
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| C1239/39 | Foreign Object is Attached on Tip of Rear Speed Sensor LH | 1. Rear speed sensor LH 2. Speed sensor rotor 3. Sensor installation 4. Skid control ECU |
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| C1241/41 | Low Battery Positive Voltage | 1. ECU-IG fuse 2. Battery 3. Charging system 4. Power source circuit 5. Internal power supply circuit of the skid control ECU |
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| C1246/46 | Master Cylinder Pressure Sensor Malfunction | 1. Master cylinder pressure sensor 2. Master cylinder pressure sensor circuit 3. Stop light switch circuit 4. Skid control ECU |
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| C1249/49 | Open in Stop Light Switch Circuit | 1. STOP fuse 2. Stop light switch 3. Stop light switch circuit 4. Skid control ECU |
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| C1251/51 | Open in Pump Motor Circuit | 1. Brake actuator assembly (Ground circuit) 2. Brake actuator assembly (Motor circuit) 3. Skid control ECU |
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| C1265/65 | Vacuum Sensor Malfunction | 1. Vacuum sensor 2. Vacuum sensor circuit 3. Skid control ECU |
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| C1266/66 | Exhaust Retarder Prevention Signal Circuit | 1. EXO circuit 2. ECM 3. Skid control ECU |
(*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 | Trouble Area | See page |
|---|---|---|---|
| C1271/71 | Low Output Signal of Front Speed Sensor RH (Test Mode DTC) | 1. Front speed sensor RH 2. Sensor installation 3. Speed sensor rotor |
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| C1272/72 | Low Output Signal of Front Speed Sensor LH (Test Mode DTC) | 1. Front speed sensor LH 2. Sensor installation 3. Speed sensor rotor |
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| C1273/73 | Low Output Signal of Rear Speed Sensor RH (Test Mode DTC) | 1. Rear speed sensor RH 2. Sensor installation 3. Speed sensor rotor |
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| C1274/74 | Low Output Signal of Rear Speed Sensor LH (Test Mode DTC) | 1. Rear speed sensor LH 2. Sensor installation 3. Speed sensor rotor |
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| C1275/75 | Abnormal Change in Output Signal of Front Speed Sensor RH (Test Mode DTC) | 1. Front speed sensor RH 2. Speed sensor rotor |
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| C1276/76 | Abnormal Change in Output Signal of Front Speed Sensor LH (Test Mode DTC) | 1. Front speed sensor LH 2. Speed sensor rotor |
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| C1277/77 | Abnormal Change in Output Signal of Rear Speed Sensor RH (Test Mode DTC) | 1. Rear speed sensor RH 2. Speed sensor rotor |
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| C1278/78 | Abnormal Change in Output Signal of Rear Speed Sensor LH (Test Mode DTC) | 1. Rear speed sensor LH 2. Speed sensor rotor |
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| C1281/81 | Master Cylinder Pressure Sensor Output Malfunction (Test Mode DTC) | 1. Stop light switch 2. Master cylinder pressure sensor |
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| C1285/85 | Vacuum Sensor Output Malfunction (Test Mode DTC) | Vacuum sensor |