STEP 1. Using scan tool (M.U.T.-IIISE), check other DTC.
STEP 2. Check the wiring harness between the ASC-ECU connector terminal and the wheel speed sensor connector terminal
DTC C1011 is set
- Check of short to ground and open circuit in FL+, FL- line between ASC-ECU connector and front wheel speed sensor (LH) connector.
DTC C101C is set
- Check of short to ground and open circuit in FR+, FR- line between ASC-ECU connector and front wheel speed sensor (RH) connector.
DTC C1027 is set
- Check of short to ground and open circuit in RL+, RL- line between ASC-ECU connector and rear wheel speed sensor (LH) connector.
DTC C1032 is set
- Check of short to ground and open circuit in RR+, RR- line between ASC-ECU connector and rear wheel speed sensor (RH) connector.
Is the check result normal?
Go to Step 3. Repair the connector(s) or wiring harness.
STEP 3. Check for wheel speed sensor installation
STEP 4. Check for wheel speed sensor output current
STEP 5. Check for wheel bearing looseness
STEP 6. Check of wheel speed detection encoder
STEP 7. Check whether the DTC is set again.
STEP 8. Check whether the DTC is set again.
(1) Erase the DTC.
(2) Turn the ignition switch to the "LOCK" (OFF) position.
(3) Turn the ignition switch to the "ON" position.
(4) Drive the vehicle at 20 km/h (12 mph) or higher.note | The ABS warning light does not turn OFF in some cases unless the vehicle runs at 20 km/h (12 mph) or higher. |
Is DTC C1011, C101C, C1027 or C1032 set?
Replace the hydraulic unit (integrated with ASC-ECU) (Refer to ). This diagnosis is complete.