Sebring LX Coupe V6-3.0L VIN H (2002)
The ETACS-ECU operates the seat belt tone alarm function, based on input signals from the following switches:
-
Ignition switch (IG1)
-
Driver's seat belt switch
If the function does not work normally, a defect on the relevant circuit or the ETACS-ECU may be suspected.
TROUBLESHOOTING HINTS
-
The driver's seat belt switch 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 method of the input signal
Q: Which is to be used, the scan tool or the voltmeter to check the input signal?
Scan tool MB991502 : Go to Step 2.
Voltmeter : Go to Step 3.
STEP 2. Check the input signal (by using scan tool MB991502).
Check the input signals from the following switches:
-
Ignition switch (IG1)
-
Driver's seat belt switch
CAUTION: To prevent damage to scan tool MB991502, always turn the ignition switch to the "LOCK" (OFF) position before connecting or
disconnecting scan tool MB991502.
1. Connect scan tool MB991502 to the data link connector.
2. Check that the tone alarm of scan tool MB991502 sounds when the input signal enters.
Q: Does the tone alarm of scan tool MB991502 sound when the input signal enters.
YES : Replace the ETACS-ECU. The seat belt tone alarm function should work normally.
NO :
-
Scan tool MB991502 does not sound when the ignition switch is turned from "ACC" to "ON": Refer to Inspection Procedure O-2 "The
ignition switch (IG1) signal is not sent to the ETACS-ECU." See: Diagnosis By Symptom/Symptom Procedures/Inspection Procedure O-2
-
Scan tool MB991502 does not sound when the driver's seat belt is unfastened: Refer to Inspection Procedure O-7 "The driver's seat belt
switch signal is not sent to the ETACS-ECU." See: Diagnosis By Symptom/Symptom Procedures/Inspection Procedure O-7
STEP 3. Check the input signal (by using a voltmeter).
Check the input signals from the following switches:
-
Ignition switch (IG1)
-
Driver's seat belt switch
