Mitsubishi Galant (2004+). Manual — part 337
INPUT SIGNAL PROCEDURES
TSB Revision
SIMPLIFIED WIRING SYSTEM (SWS)
54B-539
STEP 6. Check the wiring harness between door lock key
cylinder switch connector E-14 (terminals 1 and 3) and
ETACS-ECU connector C-217 (terminals 25 and 42).
NOTE: Also check intermediate connector C-26 for loose, cor-
roded, or damaged terminals, or terminals pushed back in the
connector. If intermediate connector C-26 is damaged, repair or
replace the connector as described in GROUP 00E, Harness
Connector Inspection
.
Q: Is the wiring harness between door lock key cylinder
switch connector E-14 (terminals 1 and 3) and
ETACS-ECU connector C-217 (terminals 25 and 42) in
good condition?
YES : Replace the ETACS-ECU. If the systems described in
"CIRCUIT OPERATION" work normally, the input
signal from the door lock key cylinder switch should
be normal.
NO : The wiring harness may be damaged or the
connector(s) may have loose, corroded or damaged
terminals, or terminals pushed back in the connector.
Repair the wiring harness as necessary. If the
systems described in "CIRCUIT OPERATION" work
normally, the input signal from the door lock key
cylinder switch should be normal.
AC305413AH
CONNECTOR: C-217
HARNESS SIDE
25
26
27
28
29
21
22
23
24
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
JUNCTION BLOCK
(REAR VIEW)
AC305262
E-14 (B)
HARNESS SIDE
AN
CONNECTOR: E-14
AC305231
CONNECTOR: C-26
AK
INPUT SIGNAL PROCEDURES
TSB Revision
SIMPLIFIED WIRING SYSTEM (SWS)
54B-540
INSPECTION PROCEDURE N-5: ETACS-ECU does not receive any signal from the front door lock
actuator.
FRONT DOOR
LOCK ACTUATOR (LH)
FRONT DOOR
LOCK ACTUATOR (RH)
ETACS-ECU
Door Lock Actuator Input Circuit
AC305233
CONNECTOR: C-12
AE
AC305231
CONNECTOR: C-26
AL
AC305413
CONNECTOR: C-217
AK
JUNCTION BLOCK
(REAR VIEW)
AC305333
E-05 (B)
CONNECTOR: E-05
AG
INPUT SIGNAL PROCEDURES
TSB Revision
SIMPLIFIED WIRING SYSTEM (SWS)
54B-541
.
CIRCUIT OPERATION
The ETACS-ECU operates the following functions or
systems according to signal from the front door lock
actuator:
• Central door locking system
• Ignition key reminder tone alarm
• Keyless entry system
• Dome light <front door lock actuator (LH)>
.
TECHNICAL DESCRIPTION (COMMENT)
If the signal is not normal, the functions or systems
described in "CIRCUIT OPERATION" do not work
normally.
.
TROUBLESHOOTING HINTS
• The front door lock actuator 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
AC305262
E-15 (B)
CONNECTOR: E-15
AM
INPUT SIGNAL PROCEDURES
TSB Revision
SIMPLIFIED WIRING SYSTEM (SWS)
54B-542
STEP 1. Check the input signal (by using the pulse check
mode of the monitor).
Check the input signals from the front door lock actuators.
CAUTION
To prevent damage to scan tool MB991958, always turn the
ignition switch to the "LOCK" (OFF) position before con-
necting or disconnecting scan tool MB991958.
(1) Connect the scan tool MB991958. Refer to "How to connect
."
(2) Operate scan tool MB991958 according to the procedure
below to display "Pulse check."
a. Select "Interactive Diagnosis."
b. Select "System select."
c. Select "SWS."
d. Select "Pulse Checking."
(3) Check that scan tool MB991958 sounds.
Q: When the front door lock actuators are operated, does
the scan tool MB991958 sound?
When the front door lock actuator (LH) is operated, the
scan tool MB991958 does not sound. : Go to Step 2.
When the front door lock actuator (RH) is operated, the
scan tool MB991958 does not sound. : Go to Step 8.
STEP 2. Check front door lock actuator (LH) connector
E-15 for loose, corroded or damaged terminals, or
terminals pushed back in the connector.
Q: Is front door lock actuator (LH) connector E-15 in good
condition?
YES : Go to Step 3.
NO : Repair or replace the damaged component(s). Refer
to GROUP 00E, Harness Connector Inspection
. If the functions described in "CIRCUIT
OPERATION" work normally, the input signal from the
front door lock actuator (LH) should be normal.
AC305412
AB
MB991910
DATA LINK
CONNECTOR
MB991824
MB991827
AC305262
E-15 (B)
HARNESS SIDE
CONNECTOR: E-15
AH
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