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ABS DIAGNOSIS TSB Revision ANTI-LOCK BRAKING SYSTEM (ABS) 35B-61 STEP 9. Check whether the DTC is reset. NOTE: The ABS warning light does not turn OFF in some Q: Is DTC C1014 set? YES : Replace the hydraulic unit (integrated with ABS-ECU) (Refer to ). Then go to Step 10. NO : The procedure is complete. STEP 10. Check whether the DTC is reset. NOTE: The ABS warning light does not turn OFF in some Q: Is DTC C1014 set? YES : Return to Step 1. DTC C101F Mutual monitoring of FR wheel speed sensor CAUTION • If there is any problem in the CAN bus lines, an incor- rect DTC may be set. Prior to this diagnosis, diagnose − CAN Bus Line Diagnostic Flow • Whenever ECU is replaced, ensure that the CAN bus lines are normal. . CIRCUIT OPERATION • The wheel speed sensor is a kind of a pulse generator. It consists of encoders (a plate on which north and south pole • The pulse signals, which the wheel speed sensor creates, are sent to ABS-ECU. ABS-ECU uses the frequency of the . DTC SET CONDITIONS ABS-ECU monitors the signals from each wheel speed sensor • Missing wheel speed sensor signal • Wheel speed sensor signal continuously indicates lower value than the values of other wheel speed sensors. . |