DIAGNOSIS |
STEP 1. M.U.T.-III CAN bus diagnostics. |
STEP 2. Check whether the diagnosis code is reset. |
(2)Erase the diagnosis code. (3)Drive the vehicle at 10 km/h or more for 5 seconds or more. (4)Turn the ignition switch to the "LOCK" (OFF) position. (5)Turn the ignition switch to the "ON" position. (6)Check if the diagnosis code is set. (7)Turn the ignition switch to the "LOCK" (OFF) position. Q.
Is code No.C1266 set?Go to Step 3.The procedure is complete. |
STEP 3. Voltage measurement at ABS-ECU connector A-01. |
(1)Disconnect the connector A-01, and connect special tool ABS check harness (MB991952) to the wiring harness-side connector.
(3)Measure the voltage between terminal 34 and earth. OK: System voltage Q.
Is the check result normal?Go to Step 5.Go to Step 4. |
STEP 4. Check ABS-ECU connector A-01 for loose, corroded or damaged terminals, or terminals pushed back in the connector. |
Q.
Is the check result normal?An open or short circuit may be present in the motor power supply circuit. Repair the wiring harness between ABS-ECU connector A-01 terminal 34 and fusible link No.22. Then go to Step 8.Repair or replace the damaged component(s). Then go to Step 8. |
STEP 5. Resistance measurement at ABS-ECU connector A-01. |
(1)Disconnect the connector A-01, and connect special tool ABS check harness (MB991952) to the wiring harness-side connector.
OK: Continuity(Less than 2 Ω) Q.
Is the check result normal?Go to Step 7.Go to Step 6. |
STEP 6. Check ABS-ECU connector A-01 for loose, corroded or damaged terminals, or terminals pushed back in the connector. |
Q.
Is the check result normal?An open circuit may be present in the earth circuit. Repair the wiring harness between ABS-ECU connector A-01 terminal 11 and the body earth or terminal 33 and the body earth. Then go to Step 8.Repair or replace the damaged component(s). Then go to Step 8. |
STEP 7. Check whether the diagnosis code is reset. |
Check again if the diagnosis code is set. (1)Turn the ignition switch to the "ON" position. (2)Erase the diagnosis code. (3)Drive the vehicle at 10 km/h or more for 5 seconds or more. (4)Turn the ignition switch to the "LOCK" (OFF) position. (5)Turn the ignition switch to the "ON" position. (6)Check if the diagnosis code is set. (7)Turn the ignition switch to the "LOCK" (OFF) position. Q.
Is code No.C1266 set?Replace the hydraulic unit assembly (integrated with ABS-ECU). Then go to Step 8.It can be assumed that this malfunction is intermittent. Refer to GROUP 00, How to Use Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunction . |
STEP 8. Check whether the diagnosis code is reset. |
Check again if the diagnosis code is set. (1)Turn the ignition switch to the "ON" position. (2)Erase the diagnosis code. (3)Drive the vehicle at 10 km/h or more for 5 seconds or more. (4)Turn the ignition switch to the "LOCK" (OFF) position. (5)Turn the ignition switch to the "ON" position. (6)Check if the diagnosis code is set. (7)Turn the ignition switch to the "LOCK" (OFF) position. Q.
Is code No.C1266 set?Go to Step 1.The procedure is complete. |