Mitsubishi Galant. Manual - part 676
SWS DIAGNOSIS
TSB Revision
SIMPLIFIED WIRING SYSTEM (SWS)
54B-99
STEP 1. Check the windshield wiper operation.
Q: Does the windshield wiper work normally?
YES : Go to Step 2 <when using scan tool MB991502> or 3
<when using a voltmeter>.
NO : Solve the problem first. Refer to
.
STEP 2. Check the input signal (by using scan tool
MB991502).
Check the input signal from the windshield washer 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 : Go to Step 4.
NO : Check the input signal circuit from the windshield
washer switch. Refer to Inspection Procedure N-15
(
).
STEP 3. Check the input signal (by using a voltmeter).
Check the input signal from the windshield washer switch.
(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.
Q: Does the voltmeter indicator deflect?
YES : Go to Step 4.
NO : Check the input signal circuit from the windshield
washer switch. Refer to Inspection Procedure N-15
(
).
STEP 4. Check the washer motor.
(1)Disconnect the washer motor connector A-33.
(2)Fill the washer tank with water.
(3)Check that the water squirts out strongly when battery
positive voltage is applied to terminals 1 and 2.
Q: Is the washer motor in good condition?
YES : Go to Step 5.
NO : Replace it. The windshield washer should work
normally.
AC003081 AB
16 PIN
MB991502
AC003083
16 PIN
AB
ETACS-ECU
TERMINAL
GROUNDED TERMINAL
MB991529
AC003168 AB
CONNECTOR A-33