STEP 1. Scan tool (M.U.T.-III) CAN bus diagnosis
(1) caution | To prevent damage to scan tool (M.U.T.-III), always turn the ignition switch to the "LOCK" (OFF) position before connecting or disconnecting scan tool (M.U.T.-III). |
Connect scan tool (M.U.T.-III). Refer to "How to connect the Scan Tool (M.U.T.-III)
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(2) Turn the ignition switch to the "ON" position.
(3) Diagnose the CAN bus line.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
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 4. 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 power supply, 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 power supply, 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 power supply, 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 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 5. Repair the connector(s) or wiring harness. Then go to Step 11.
STEP 5. Check for wheel speed sensor installation
STEP 6. Check for wheel speed sensor output current
STEP 7. Check for wheel bearing looseness
STEP 8. Check of wheel speed detection encoder
STEP 9. Check whether the DTC is set again.
STEP 10. Check whether the DTC is set again.
STEP 11. 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.C1011, C101C, C1027 or C1032 set?
Return to Step 1. This diagnosis is complete.