Eclipse RS L4-2350cc 2.4L SOHC MFI (2002)
Turn the ignition switch to the "ON" position before checking input signals from the ignition switch (IG1).
Select "ETACS-ECU" (DATA LIST), and check that normal conditions are displayed on the items described in the table.
Q: Does the scan tool display "IG SW (IG1)" as normal condition?
YES: Go to Step 3.
NO: Refer to Inspection Procedure O-2 "ETACS-ECU does not receive a signal from the ignition switch (IG1)."
STEP 3. Check the input signal (by using the Pulse Check).
Check input signal from the driver's side seat belt switch.
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When the driver's seat belt is fastened, check if scan tool MB991502 sounds or not.
Q: Does scan tool MB991502 sound when the driver's side seat belt is fastened?
YES: Replace the ETACS-ECU. Check that the seat belt tone alarm function works normally.
NO: Refer to Inspection Procedure P-3 "ETACS-ECU does not receive a signal from the driver's side seat belt switch."
Inspection Procedure C-1
Central Door Locking System: The Central Door Lock System does not Work at all.
NOTE: This troubleshooting requires use of scan tool MB991502 and SWS monitor kit MB991862. For details of how to use the SWS monitor, refer
to "How to use SWS monitor."
