Inspection Procedure O-17

INSPECTION PROCEDURE O-17: Transmitter: The lock, unlock, trunk or panic switch signal is not sent to the ETACS-ECU.





03-04 Sebring/Stratus






02 Sebring/Stratus

CIRCUIT OPERATION
The ETACS-ECU receives an input signal from the transmitter through its built-in receiver, and evaluates the signal to operate various functions.

TECHNICAL DESCRIPTION (COMMENT)
The transmitter input signal is used to operate the following Systems;
- Keyless entry system
- Theft-alarm system
If the signal fails, these systems will not work normally.

TROUBLESHOOTING HINTS
- The transmitter may be defective
- The ETACS-ECU may be defective

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

STEP 1. Register the transmitter.
Register the transmitter (Refer to Keyless Entry System On-vehicle Service - Encrypted Code Registration Method.)

Q: Is the transmitter registered successfully?

YES : The transmitter input signal should be able to be checked and the functions, which are described in the 'Technical Description (comment),' should work normally.

NO : Go to Step 2.




STEP 2. Check the transmitter battery.
Measure the transmitter battery's voltage.
- The value should be approximately 2.5 - 3.2 volts.

Q: Is the measured voltage approximately 12 volts (battery positive voltage)?

YES : Go to Step 3.

NO : Replace the battery. If the transmitter is registered successfully, the transmitter input signal should be able to be checked and the functions, which are described in the 'Technical Description (comment),' should work normally.

STEP 3. Check the transmitter.
1. Use an other transmitter to register the secret code. (Refer to keyless Entry System - On-vehicle Service
- Encrypted Code Registration Method.)

Q: Is the transmitter registered successfully?

YES : The transmitter input signal should be able to be checked and the functions, which are described in the 'Technical Description (comment),' should work normally.

NO : Replace the ETACS-ECU. The transmitter input signal should be able to be checked and the functions, which are described in the 'Technical Description (comment),' should work normally.