ANTI-LOCK BRAKE SYSTEM DIAGNOSTIC TROUBLE CODE CHART
Note
When removing any parts, turn the ignition switch off.
Tech Tips
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If no abnormality is found when inspecting parts, check the skid control ECU and check for poor contact at ground points.
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If a DTC is displayed during the DTC check, check the circuit for the DTC listed in the table below. For details of each DTC, refer to the page indicated.
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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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All DTCs in the table below are detected in accordance with 1 trip detection logic.
| DTC Code | Detection Item | Trouble Area | See page |
|---|---|---|---|
| C1203 | ECM Communication Circuit Malfunction | - Test mode not performed - Skid control ECU (brake actuator assembly) |
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| C1241 | Low Power Supply Voltage Malfunction | - Battery - Charging system - ABS NO. 2 fuse - Power source circuit - Skid control ECU (brake actuator assembly) |
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| C1249 | Open in Stop Light Switch Circuit | - Stop light switch assembly - Stop light switch circuit - Skid control ECU (brake actuator assembly) |
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| C1251*1 | Open in Pump Motor Circuit | - ABS NO. 1 fuse - Skid control ECU (brake actuator assembly) |
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| C1300 | Skid Control ECU Malfunction | - Skid control ECU (brake actuator assembly) | |
| C1330 | Open in Front Speed Sensor RH | - Front speed sensor RH - Speed sensor circuit - Sensor installation |
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| C1331 | Open in Front Speed Sensor LH | - Front speed sensor LH - Speed sensor circuit - Sensor installation |
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| C1332 | Open in Rear Speed Sensor RH | - Rear speed sensor RH - Rear speed sensor circuit - Sensor installation |
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| C1333 | Open in Rear Speed Sensor LH | - Rear speed sensor LH - Rear speed sensor circuit - Sensor installation |
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| C1464*1 | Front Speed Sensor RH | - Front speed sensor RH - Speed sensor circuit - Front axle hub sub-assembly RH (front speed sensor rotor) - Sensor installation - Skid control ECU (brake actuator assembly) |
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| C1465*1 | Front Speed Sensor LH | - Front speed sensor LH - Speed sensor circuit - Front axle hub sub-assembly LH (front speed sensor rotor) - Sensor installation - Skid control ECU (brake actuator assembly) |
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| C1466*1 | Rear Speed Sensor RH | - Rear speed sensor circuit - Rear axle hub and bearing assembly RH (Rear speed sensor, speed sensor rotor) - Sensor installation - Skid control ECU (brake actuator assembly) |
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| C1467*1 | Rear Speed Sensor LH | - Rear speed sensor circuit - Rear axle hub and bearing assembly LH (Rear speed sensor, speed sensor rotor) - Sensor installation - Skid control ECU (brake actuator assembly) |
|
| C1468 | SFR Solenoid Circuit | - Brake actuator assembly | |
| C1469 | SFL Solenoid Circuit | - Brake actuator assembly | |
| C146A | SRR Solenoid Circuit | - Brake actuator assembly | |
| C146B | SRL Solenoid Circuit | - Brake actuator assembly | |
| C146E | Open in ABS Solenoid Relay Circuit | - ABS NO. 2 fuse - Wire harness (+BS) - Skid control ECU (brake actuator assembly) |
|
| U0073 | Control Module Communication Bus Off | - CAN communication system |
Tech Tips
*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 10 km/h (6 mph) for 30 seconds or more and check that the ABS warning light goes off.
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Clear the DTC(s).
| DTC Code | Detection Item | Trouble Area | See page |
|---|---|---|---|
| C1271 | Low Output Signal of Front Speed Sensor RH (Test Mode DTC) | - Front speed sensor RH - Sensor installation - Front axle hub sub-assembly RH (front speed sensor rotor) |
|
| C1272 | Low Output Signal of Front Speed Sensor LH (Test Mode DTC) | - Front speed sensor LH - Sensor installation - Front axle hub sub-assembly LH (front speed sensor rotor) |
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| C1273 | Low Output Signal of Rear Speed Sensor RH (Test Mode DTC) | - Sensor installation - Rear axle hub and bearing assembly RH (Rear speed sensor, speed sensor rotor) |
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| C1274 | Low Output Signal of Rear Speed Sensor LH (Test Mode DTC) | - Sensor installation - Rear axle hub and bearing assembly LH (Rear speed sensor, speed sensor rotor) |
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| C1275 | Abnormal Change in Output Signal of Front Speed Sensor RH (Test Mode DTC) | - Front speed sensor RH (open) - Front speed sensor circuit (open) |
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| C1276 | Abnormal Change in Output Signal of Front Speed Sensor LH (Test Mode DTC) | - Front speed sensor LH (open) - Front speed sensor circuit (open) |
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| C1277 | Abnormal Change in Output Signal of Rear Speed Sensor RH (Test Mode DTC) | - Rear speed sensor (open) - Rear speed sensor circuit (open) |
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| C1278 | Abnormal Change in Output Signal of Rear Speed Sensor LH (Test Mode DTC) | - Rear speed sensor (open) - Rear speed sensor circuit (open) |