Code No.U1073: Bus off
| caution | If diagnosis code No.U1073
is set in the immobilizer-ECU, diagnose the CAN bus lines. |
| caution | Whenever the ECU is replaced, ensure that the input and output
signal circuits are normal. |
TROUBLE JUDGMENT
COMMENTS ON TROUBLE SYMPTOM
PROBABLE CAUSES
- Damaged harness wires and connectors
- Malfunction of immobilizer-ECU
DIAGNOSIS PROCEDURE
STEP 1. M.U.T.-III CAN bus diagnostics
Q.
Is the check result normal?
STEP 2. Check whether the diagnosis code is reset.
| (1)Erase the diagnosis code. |
| (2)Turn the ignition switch to the "LOCK" (OFF) position once, and then turn it to
the "ON" position again. |
| (3)Check if the diagnosis code is set. |
Q.
Is the check result normal?
STEP 3. Check whether the diagnosis code is reset.
| (1)Erase the diagnosis code. |
| (2)Turn the ignition switch to the "LOCK" (OFF) position once, and then turn it to
the "ON" position again. |
| (3)Check if the diagnosis code is set. |
Q.
Is the check result normal?