INSPECTION PROCEDURE O-16: The windshield intermittent wiper interval adjusting knob signal is not sent to the ETACS-ECU.: Diagnosis

WARNING: This page is about a different car, the 2005 Dodge Stratus and 2005 Chrysler Sebring. However, it is still accessible from the selected car via links, so may be relevant.

Required Special Tools:

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

STEP 1. Check the windshield intermittent wiper interval adjusting knob and column switch body.
Check the resistance at terminal numbers 27 and 28. The resistance should change smoothly from approximately 0 ohm ("FAST" position) to approximately 1 kiloohm ("SLOW" position).

Q: Is the windshield intermittent wiper interval adjusting knob in good condition?

YES : Go to Step 2.

NO: Replace the it. Check that the input signal from the windshield intermittent wiper interval adjusting knob can be checked and the wiper interval can be adjusted.

Fig 1: Identifying Column Switch Connector Terminals
Courtesy of DAIMLERCHRYSLER CORPORATION
STEP 2. Check the column switch connector C-203 and ETACS-ECU connector C-318 for loose, corroded or damaged terminals, or terminals pushed back in the connector.
Q: Is column switch connector C-203 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 . Check that the input signal from the windshield intermittent wiper interval adjusting knob can be checked and the wiper interval can be adjusted.

Fig 2: Identifying Connector C-203 - Harness Side
Courtesy of DAIMLERCHRYSLER CORPORATION

Fig 3: Identifying Connector C-318 - Harness Side
Courtesy of DAIMLERCHRYSLER CORPORATION
STEP 3. Check the wiring harness between column switch connector C-203 (terminal 6) and ETACS-ECU connector C-318 (terminal 66).
Q: Is the wiring harness between column switch connector C-203 (terminal 6) and ETACS-ECU connector C-318 (terminal 66) 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. Check that the input signal from the windshield intermittent wiper interval adjusting knob can be checked and the wiper interval can be adjusted.

Fig 4: Identifying Connector C-203 - Harness Side
Courtesy of DAIMLERCHRYSLER CORPORATION

Fig 5: Identifying Connector C-318 - Harness Side
Courtesy of DAIMLERCHRYSLER CORPORATION
STEP 4. Replacement of ECU
1. Replace the ETACS-ECU.
2. Check that the input signal from the windshield intermittent wiper interval adjusting knob can be checked and the wiper interval can be adjusted.
Q: Is the input signal from the windshield intermittent wiper interval adjusting knob input normally?

YES : No action is necessary and testing is complete.

NO: Replace the column switch. Check that the input signal from the windshield intermittent wiper interval adjusting knob can be checked and the wiper interval can be adjusted.