Inspection Procedure O-18

INSPECTION PROCEDURE O-18: Sunroof switch: The open or close switch signal is not sent to the ETACS-ECU.











03-04 Sebring/Stratus






02 Sebring/Stratus

CIRCUIT OPERATION
The ETACS-ECU receives a signal from the sunroof switch through the sunroof motor assembly, and sends the input signal to the data link connector.

TECHNICAL DESCRIPTION (COMMENT)
If the SWS communication line between the sunroof motor assembly and the ETACS-ECU is defective, the sunroof switch input signal can not be checked even if the sunroof is normal.

TROUBLESHOOTING HINTS
- The sunroof switch may be defective
- The sunroof motor assembly may be defective
- The ETACS-ECU may be defective
- The wiring harness or connectors may have loose, corroded, or damaged terminals, or terminals pushed back in the connector

DIAGNOSIS
Required Special Tools:
- MB991223: Test Harness Set
- MB991502: Scan Tool (MUT-II)
- MB991529: Diagnostic Trouble Code Check Harness

STEP 1. Verify the sunroof operation.

Q: Does the sunroof work normally?

YES : Go to Step 2.

NO : Solve the problem first. Refer to Inspection Procedure F-1.







STEP 2. Check the sunroof motor assembly connector D-08 and ETACS-ECU connector C-318 for loose, corroded or damaged terminals, or terminals pushed back in the connector.

Q: Are sunroof motor assembly connector D-08 and ETACS-ECU connector C-318 in good condition?

YES : Go to Step 3.

NO : Repair or replace the damaged component(s). Refer to Harness Connector Inspection. The input signal from the sunroof switch should be able to be checked and the sunroof should work normally.










STEP 3. Check the wiring harness between sunroof motor assembly connector D-08 (terminal 10) and ETACS-ECU connector C-318 (terminal 59).

NOTE : Also check intermediate connector C-28 and joint connector C-141 for loose, corroded, or damaged terminals, or terminals pushed back in the connector If intermediate connector C-28 or joint connector C-141 are damaged, repair or replace the damaged component(s) Refer to Harness Connector Inspection.

Q: Are the wiring harness between sunroof motor assembly connector D-08 (terminal 10) and ETACS-ECU connector C-318 (terminal 59) in good condition?

YES : Go to Step 4.

NO : The wiring harness may be damaged or the connector(s) may have loose, corroded or damaged terminals, or terminals pushed back in the connector. Repair the wiring harness as necessary. The input signal from the sunroof switch should be able to be checked and the sunroof should work normally.

STEP 4. Replacement of ECU
1. Replace the sunroof motor assembly.
2. The input signal from the sunroof switch should be able to be checked and the sunroof should work normally

Q: Is the input signal from the sunroof switch input normally?

YES : No action is necessary and testing is complete.

NO : Replace the ETACS-ECU. The input signal from the sunroof switch should be able to be checked and the sunroof should work normally.