STEP 1. Scan tool (M.U.T.-IIISE) CAN bus diagnosis.
(1) caution | To prevent damage to scan tool (M.U.T.-IIISE), always turn off the power supply mode of the electric motor switch before connecting or disconnecting scan tool (M.U.T.-IIISE). |
Connect scan tool (M.U.T.-IIISE). Refer to "How to connect the Scan Tool (M.U.T.-IIISE)
."
(2) Turn on the power supply mode of the electric motor switch.
(3) Diagnose the CAN bus line.
(4) Turn off the power supply mode of the electric motor switch.
Is the check result normal?
Go to Step 3. Repair the CAN bus lines (Refer to GROUP 54C - CAN Bus Diagnostics Table ). On completion, go to Step 2.
STEP 2. DTC recheck after resetting CAN bus lines.
STEP 3. Check whether the DTC is set again.
DTC C1046 is set
- Check that the DTCs No.C100A, C1011, C1014, and C1041 are also set.
DTC C1047 is set
- Check that the DTCs No.C1015, C101C, C101F, and C1042 are also set.
DTC C1048 is set
- Check that the DTCs No.C1020, C1027, C102A, and C1043 are also set.
DTC C1049 is set
- Check that the DTCs No.C102B, C1032, C1035, and C1044 are also set.
Are the DTCs set?
Carry out the diagnosis for the relevant DTCs. Go to Step 4.
STEP 4. Scan tool (M.U.T.-IIISE) data list.
STEP 5. Check the wiring harness between the ASC-ECU connector terminal and the wheel speed sensor connector terminal.
DTC C1046 is set
- Check of short to power supply, short to ground, and open circuit in FL+, FL- line between ASC-ECU connector and front wheel speed sensor (LH) connector.
DTC C1047 is set
- Check of short to power supply, short to ground, and open circuit in FR+, FR- line between ASC-ECU connector and front wheel speed sensor (RH) connector.
DTC C1048 is set
- Check of short to power supply, short to ground, and open circuit in RL+, RL- line between ASC-ECU connector and rear wheel speed sensor (LH) connector.
DTC C1049 is set
- Check of short to power supply, 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 6. Repair the connector(s) or wiring harness. Then go to Step 12.
STEP 6. Check for wheel speed sensor installation.
STEP 7. Check for wheel speed sensor output current.
STEP 8. Check for wheel bearing looseness.
STEP 9. Check of wheel speed detection encoder.
STEP 10. Check whether the DTC is set again.
STEP 11. Check whether the DTC is set again.
STEP 12. Check whether the DTC is set again.
(1) Erase the DTC.
(2) Drive the vehicle at 12 mph (20 km/h) or higher.note | The ABS warning light does not turn OFF in some cases unless the vehicle runs at 12 mph (20 km/h) or higher. |
Is DTC No.C1046, C1047, C1048 or C1049 set?
Return to Step 1. This diagnosis is complete.