MMCS
TSB Revision
CHASSIS ELECTRICAL
54A-485
STEP 2. Using scan tool MB991958, read the ETACS-ECU
diagnostic trouble code.
Check if the diagnostic trouble code relating to the coding error
is set to the ETACS-ECU.
Q: Is the DTC set?
YES : Troubleshoot the ETACS-ECU (Refer to
P.54A-732
),
and then go to Step 3.
NO : Go to Step 3.
STEP 3. Recheck for diagnostic trouble code.
Check again if the DTC is set to the CAN box unit.
(1) Erase the DTC.
(2) Turn the ignition switch from "LOCK" (OFF) position to "ON"
position.
(3) Check if DTC is set.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the DTC set?
YES : Replace the CAN box unit.
NO : The trouble can be an intermittent malfunction (Refer
to GROUP 00, How to use
Troubleshooting/inspection Service Points
− How to
Cope with Intermittent Malfunction
P.00-15
).