Code No.U1120 Bus
line (CAN-C) low input
Code No.U1121 Bus line (CAN-C) high input
JUDGMENT CRITERIA
- If the CAN bus line voltage is 0.3 V or less, the diagnosis code No. U1120
is set.
- If the CAN bus line voltage is 4.7 V or more, the diagnosis code No. U1121 is set.
PROBABLE CAUSES
- Malfunction of CAN bus line
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 from "LOCK" (OFF) position to "ON" position. |
(3)Check if diagnosis code is set. |