|
- Use M.U.T.-III to perform CAN bus line diagnosis.
|
|
Q.
Is the check result normal?
|
|
Repair CAN bus line (Refer to GROUP 54C - Troubleshooting - CAN
Bus Diagnosis Table ). After repairing CAN bus line, go
to Step 6.
|
|
|
|
- Confirm whether the diagnosis code is set in the ABS-ECU/ASTC-ECU.
|
|
Q.
Is diagnosis code set?
|
|
Perform troubleshooting of the anti-lock brake system (ABS) (Refer to GROUP 35B - Diagnosis
Code Chart ) <Vehicles with ABS>. Perform troubleshooting
of the active stability traction control system (ASTC) (Refer to GROUP 35C - Troubleshooting - Diagnosis
Code Chart ) <Vehicles with ASTC>.
|
|
|
|
Check that the other ECU performing CAN communication with ABS-ECU/ASTC-ECU sets diagnosis
code No. U0121 [Refer to GROUP 54C - CAN Communication-related Diagnosis Code (U-code)
Table ].
|
|
Q.
Is diagnosis code set?
|
|
- Reconfirmation of diagnosis code.
|
|
Confirm again whether the diagnosis code is set in the engine-ECU.
|
|
- Erase the set diagnosis code.
- Ignition switch: "LOCK" (OFF) → "ON"
- Confirm whether the diagnosis code is set.
|
|
Q.
Is diagnosis code set?
|
|
After replacing ABS-ECU <ABS> or hydraulic unit (integrated with ASTC-ECU) <ASTC>,
go to Step 6.
|
|
|
|
Intermittent malfunction in CAN bus line between engine-ECU and ABS-ECU/ASTC-ECU
(Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points - How
to Cope with Intermittent Malfunctions).
|
|
|
|
- Reconfirmation of diagnosis code.
|
|
Confirm again whether the diagnosis code is set in the engine-ECU.
|
|
- Erase the set diagnosis code.
- Ignition switch: "LOCK" (OFF) → "ON"
- Confirm whether the diagnosis code is set.
|
|
Q.
Is diagnosis code set?
|
|
After replacing the engine-ECU, go to Step 6.
|
|
|
|
Intermittent malfunction in CAN bus line between engine-ECU and ABS-ECU/ASTC-ECU
(Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points - How
to Cope with Intermittent Malfunctions).
|
|
|
|
- Reconfirmation of diagnosis code.
|
|
Confirm again whether the diagnosis code is set in the engine-ECU.
|
|
- Erase the set diagnosis code.
- Ignition switch: "LOCK" (OFF) → "ON"
- Confirm whether the diagnosis code is set.
|
|
Q.
Is diagnosis code set?
|