ANTI-LOCK BRAKE SYSTEM DIAGNOSTIC TROUBLE CODE CHART

Note

When removing any parts, turn the ignition switch off.

Tech Tips

If no abnormality is found when inspecting parts, check the skid control ECU and check for poor contact at ground points.
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.
When 2 or more DTCs are detected, perform circuit inspection one by one until the problem is identified.
All DTCs in the table below are detected in accordance with 1 trip detection logic.

Anti-lock Brake System
DTC Code	Detection Item	See page
C1203	ECM Communication Circuit Malfunction	Click here
C1241	Low Power Supply Voltage Malfunction	Click here
C1249	Open in Stop Light Switch Circuit	Click here
C1251*1	Open in Pump Motor Circuit	Click here
C1300	Skid Control ECU Malfunction	Click here
C1330	Open in Front Speed Sensor RH	Click here
C1331	Open in Front Speed Sensor LH	Click here
C1332	Open in Rear Speed Sensor RH	Click here
C1333	Open in Rear Speed Sensor LH	Click here
C1464*1	Front Speed Sensor RH	Click here
C1465*1	Front Speed Sensor LH	Click here
C1466*1	Rear Speed Sensor RH	Click here
C1467*1	Rear Speed Sensor LH	Click here
C1468	SFR Solenoid Circuit	Click here
C1469	SFL Solenoid Circuit	Click here
C146A	SRR Solenoid Circuit	Click here
C146B	SRL Solenoid Circuit	Click here
C146E	Open in ABS Solenoid Relay Circuit	Click here
U0073	Control Module Communication Bus Off	Click here

Tech Tips

*1:

Even after the trouble areas are repaired, the ABS warning light will not go off unless the following operations are performed.

Drive the vehicle at 10 km/h (6 mph) for 30 seconds or more and check that the ABS warning light goes off.
Clear the DTC(s).

Test Mode Diagnosis
DTC Code	Detection Item	See page
C1271	Low Output Signal of Front Speed Sensor RH (Test Mode DTC)	Click here
C1272	Low Output Signal of Front Speed Sensor LH (Test Mode DTC)	Click here
C1273	Low Output Signal of Rear Speed Sensor RH (Test Mode DTC)	Click here
C1274	Low Output Signal of Rear Speed Sensor LH (Test Mode DTC)	Click here
C1275	Abnormal Change in Output Signal of Front Speed Sensor RH (Test Mode DTC)	Click here
C1276	Abnormal Change in Output Signal of Front Speed Sensor LH (Test Mode DTC)	Click here
C1277	Abnormal Change in Output Signal of Rear Speed Sensor RH (Test Mode DTC)	Click here
C1278	Abnormal Change in Output Signal of Rear Speed Sensor LH (Test Mode DTC)	Click here