Mitsubishi Galant 9G. Manual — part 17
SYMPTOM PROCEDURES
TSB Revision
SIMPLIFIED WIRING SYSTEM (SWS)
54B-64
SCAN TOOL OR VOLTMETER
If a problem is found in the Pulse Check, observe the
table below.
SYMPTOM PROCEDURES
INSPECTION PROCEDURE A-1: Communication with the SWS Monitor Kit is not Possible.
SYMPTOM
INSPECTION
PROCEDURE
REFERENCE
PAGE
ETACS-ECU does not receive any signal from the key reminder switch.
N-1
ETACS-ECU does not receive any signal from the hazard warning light
switch.
N-2
ETACS-ECU does not receive any signal from any of the door switches.
N-3
ETACS-ECU does not receive any signal from the door lock key cylinder
switch.
N-4
ETACS-ECU does not receive any signal from the front door lock actuator. N-5
ETACS-ECU does not receive any signal from the door lock switch
(incorporated in the power window main switch and front power window
sub switch).
N-6
ETACS-ECU does not receive any signal from the trunk lid latch assembly. N-7
Transmitter
ETACS-ECU does not receive any signal from the lock,
unlock, trunk or panic switch.
N-8
ETACS-ECU does not receive any interior light loaded signal.
N-9
DATA LINK
CONNECTOR
JUNCTION
BLOCK SIDE
FRONT
SIDE
ETACS-
ECU
Scan Tool Communication and ETACS-ECU Ground Circuit
SYMPTOM PROCEDURES
TSB Revision
SIMPLIFIED WIRING SYSTEM (SWS)
54B-65
.
TECHNICAL DESCRIPTION (COMMENT)
The SWS monitor kit may be connected improperly.
.
TROUBLESHOOTING HINTS
• The SWS monitor body (I/F cartridge) may be
defective
• The SWS monitor harness may be defective
• The wiring harness or connectors may have
loose, corroded, or damaged terminals, or termi-
nals pushed back in the connector
• The ETACS-ECU may be defective
DIAGNOSIS
Required Special Tools:
• MB991223: Harness Set
• MB991958: Scan Tool (MUT-III Sub Assembly)
• MB991824: Vehicle Communication Interface (V.C.I.)
• MB991827: MUT-III USB Cable
• MB991910: MUT-III Main Harness A
• MB991813: SWS Monitor Kit
• MB991806: SWS Monitor Cartridge
• MB991812: SWS Monitor Harness (For Column-ECU)
• MB991822: Probe Harness
STEP 1. Verify SWS monitor kit MB991813 for proper
connection.
Q: Is SWS monitor kit MB991813 connected with the
column switch properly?
YES : Go to Step 2.
NO : Connect SWS monitor kit MB991813 to the column
switch securely.
AC305231BJ
CONNECTORS: C-03, C-125
C-03
C-125 (B)
AC305415AN
CONNECTOR: C-211
AC305413
C-219
C-218 (GR)
CONNECTORS: C-218, C-219
AM
SYMPTOM PROCEDURES
TSB Revision
SIMPLIFIED WIRING SYSTEM (SWS)
54B-66
STEP 2. Verify the power supply circuit to the ETACS-ECU.
Q: Does the system communicate with scan tool
MB991958 when the ignition switch is turned to the
"ON" position?
YES : Refer to Inspection Procedure A-3 "Communication
with the ETACS-ECU is not possible
NO : Go to Step 3.
STEP 3. Check ETACS-ECU connectors C-218 and C-219
for loose, corroded or damaged terminals, or terminals
pushed back in the connector.
Q: Are ETACS-ECU connectors C-218 and C-219 in good
condition?
YES : Go to Step 4.
NO : Repair or replace the damaged component(s). Refer
to GROUP 00E, Harness Connector Inspection
. Verify that the system should communicate
with the SWS monitor normally.
AC305414
CONNECTORS: C-218, C-219
JUNCTION BLOCK
(REAR VIEW)
C-219
C-218 (GR)
HARNESS SIDE
C-218
C-219
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
JUNCTION BLOCK SIDE
AC
SYMPTOM PROCEDURES
TSB Revision
SIMPLIFIED WIRING SYSTEM (SWS)
54B-67
STEP 4. Check the ground circuit to the ETACS-ECU.
Measure the resistance at ETACS-ECU connectors C-218
and C-219.
(1) Disconnect ETACS-ECU connectors C-218 and C-219, and
measure the resistance available at the junction block side
of the connector.
(2) Measure the resistance value between ETACS-ECU
connector C-218 terminal 56 and ground.
• The resistance should be 2 ohms or less.
Measure the resistance value between ETACS-ECU
connector C-219 terminal 3 and ground.
• The resistance should be 2 ohms or less.
Q: Is the measured resistance 2 ohms or less?
YES : Go to Step 6.
NO : Go to Step 5.
AC305414
CONNECTORS: C-218, C-219
JUNCTION BLOCK
(REAR VIEW)
C-219
C-218 (GR)
HARNESS SIDE
C-218
C-219
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
JUNCTION BLOCK SIDE
AC
68
74
63
66
72
73
67
6564
61
70
71
62
69
60
57
58
59
5655
52
54 53
51
AC209839AB
CONNECTOR C-218
(HARNESS SIDE)
2019 18 1716 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1
AC209857AB
CONNECTOR C-219
(JUNCTION BLOCK SIDE)
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