DTC C1633: T/M Timeout
caution
If there is any problem in the CAN bus lines, an incorrect DTC may be stored. Prior to this diagnosis, diagnose the CAN bus lines.
Whenever the ECU is replaced, ensure that the CAN bus lines are normal.
OPERATION
AWC-ECU communicates with TCM via the CAN bus lines.
DTC SET CONDITION
This DTC is stored when the abnormality below is detected:
The CAN signal of the TCM cannot be received.
PROBABLE CAUSES
Malfunction of the CAN bus line
Damaged TCM connectors
Malfunction of TCM
Malfunction of AWC-ECU
Coding failure
DIAGNOSTIC PROCEDURE
STEP 1. Scan tool (M.U.T.-III) CAN bus diagnostics.
Use scan tool (M.U.T.-III) to perform the CAN bus diagnosis.
Is the check result normal?
Go to Step 2
.
Repair the CAN bus lines (Refer to GROUP 54C - Diagnosis, Can Bus Diagnostics Table
).
STEP 2. Scan tool (M.U.T.-III) DTC.
Check the transaxle other DTC (Refer to
).
Is the DTC stored?
Perform the relevant troubleshooting.
Go to Step 3
.
STEP 3. ETACS-ECU coding data check.
Check the transmission coding data stored in ETACS-ECU for any abnormality (Refer to GROUP 00 - Coding List
).
Is the check result normal?
Go to Step 4
.
Replace the ETACS-ECU. Then go to Step 5
.
STEP 4. Check whether the DTC is stored again.
Is DTC No.C1633 stored?
Replace the AWC-ECU (Refer to
). Then go to Step 5
.
Intermittent malfunction (Refer to GROUP 00 - How to Cope with Intermittent Malfunction
).
STEP 5. Check whether the DTC is stored again.
Is DTC No.C1633 stored?
Return to Step 1
.
This diagnosis is complete.