Galant DE L4-2350cc 2.4L SOHC MFI (2000)
<When using a voltmeter>
1. Use special tool MB991529 to connect a voltmeter between ground terminal 4 or 5 and ETACS-ECU terminal 9 of the data link connector.
2. Check that the voltmeter indicator deflects once when the input signal enters.
If one of the input signal checks shows a defect, check the relevant input circuit.
If no defect appears, replace the ETACS-ECU.
The ignition key reminder tone alarm function should work normally.
Inspection Procedure B-2
TECHNICAL DESCRIPTION (COMMENT)
The ETACS-ECU operates the light reminder tone alarm function, based on input signals from the following switches and the front-ECU.
-
Ignition switch (IG1)
-
Driver's door switch
-
Taillight switch
-
Headlight switch
If the function does not work normally, a defect on the relevant circuit or the ETACS-ECU may be suspected.
TROUBLESHOOTING HINTS
-
Malfunction of the driver's door switch
-
Malfunction of the column switch (turn-signal light and lighting switch)
-
Malfunction of the ETACS-ECU
-
Damaged harness wires or connectors
DIAGNOSIS
Required Special Tools:
MB991223: Test Harness Set
MB991502: Scan Tool (MUT-II)
MB991529: Diagnostic Trouble Code Check Harness
STEP 1. Check the ETACS-ECU power supply circuit.
If the ignition switch is at "LOCK" (OFF) position, do all of the following functions operate?
-
Ignition key reminder tone alarm function
-
Central door locking system
-
Ignition key hole illumination light
-
Hazard warning light
-
Dome light dimming function
-
Theft-alarm system <vehicles with theft-alarm system>
If none of the functions operate, check the ETACS-ECU battery circuit. Refer to Inspection Procedure O-1.
If any of the functions operate, go to Step 2.
STEP 2. Check the input signal.
Check the input signals from the following switches:
-
Ignition switch (IG1)
-
Driver's door switch
-
Taillight switch
-
Headlight switch
<When using scan tool MB991502>
