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1. No Communication With Scan Tool







CIRCUIT OPERATION
The ETACS-ECU signal or the diagnostic trouble code are sent to the data link connector. A trouble can be diagnosed by connecting the scan tool to the data link connector.

TECHNICAL DESCRIPTION (COMMENT)
The cause may be a malfunction of the data link check circuit.

TROUBLESHOOTING HINTS
- Malfunction of the ETACS-ECU
- Malfunction of the data link connector
- Damaged harness wires or connectors

DIAGNOSIS
Required Special Tool:
MB991502: Scan Tool (MUT-II)







STEP 1. Check the harness wire between data link connector C-23 and ETACS-ECU connector C-82.
1. Remove the instrument panel side cover [LH].
2. Check the harness wires between data link connector C-23 and ETACS-ECU connector C-82.
If any harness wire between data link connector C-23 and ETACS-ECU connector C-82 is damaged, repair it. Then go to Step 2.
If the harness wires are not damaged, replace the ETACS-ECU. Then go to Step 2.

STEP 2. Check symptoms.
Confirm that the harness wires, the ETACS-ECU and the scan tool are normal.
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