air condition MITSUBISHI 380 2005 Workshop Manual

INPUT SIGNAL PROCEDURES
SIMPLIFIED WIRING SYSTEM (SWS)54B-447
DIAGNOSIS
Required Special Tool:
MB991223: Harness Set
STEP 1. Check door lock key cylinder switch connector
E-14 for loose, corroded or damaged terminals, or
terminals pushed back in the connector.
Q: Is door lock key cylinder switch connector E-14 in good
condition?
YES : Go to Step 2.
NO : Repair or replace the damaged component(s). Refer
to GROUP 00E, Harness Connector Inspection
P.00E-2. If the systems described in "CIRCUIT
OPERATION" work normally, the input signal from the
door lock key cylinder switch should be normal.
STEP 2. Check the door lock key cylinder switch.
Disconnect door lock key cylinder switch connector E-14. Then
check continuity between the switch terminals.
Q: Is the door lock key cylinder switch in good condition?
YES : Go to Step 3.
NO : Replace the door lock key cylinder switch. If the
systems described in "CIRCUIT OPERATION" work
normally, the input signal from the door lock key
cylinder switch should be normal.
SWITCH
POSITIONTESTER
CONNECTIONSPECIFIED
CONDITION
LOCK 2
3 Less than 2 ohms
Neutral (OFF) 1
2, 2 3 Open circuit
UNLOCK 1
2 Less than 2 ohms

INPUT SIGNAL PROCEDURES
SIMPLIFIED WIRING SYSTEM (SWS)54B-449
NOTE: Also check intermediate connector C-12 for loose, cor-
roded, or damaged terminals, or terminals pushed back in the
connector. If intermediate connector C-12 is damaged, repair or
replace the connector as described in GROUP 00E, Harness
Connector Inspection P.00E-2.
Q: Is the wiring harness between door lock key cylinder
switch connector E-14 (terminals 2) and ground in good
condition?
YES : No action is necessary and testing is complete.
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.
STEP 5. Check ETACS-ECU connector C-217 for loose,
corroded or damaged terminals, or terminals pushed back
in the connector.
Q: Is ETACS-ECU connector C-217 in good condition?
YES : Go to Step 6.
NO : Repair or replace the damaged component(s). Refer
to GROUP 00E, Harness Connector Inspection
P.00E-2. If the systems described in "CIRCUIT
OPERATION" work normally, the input signal from the
door lock key cylinder switch should be normal.

INPUT SIGNAL PROCEDURES
SIMPLIFIED WIRING SYSTEM (SWS)54B-450
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-12 for loose, cor-
roded, or damaged terminals, or terminals pushed back in the
connector. If intermediate connector C-12 is damaged, repair or
replace the connector as described in GROUP 00E, Harness
Connector Inspection P.00E-2.
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.

INPUT SIGNAL PROCEDURES
SIMPLIFIED WIRING SYSTEM (SWS)54B-452
DIAGNOSIS
Required Special Tools:
MB991223: Harness Set
MB991958: Diagnostic Tool (MUT-III Sub Assembly)
MB991824: Vehicle Communication Interface (V.C.I.)
MB991827: MUT-III USB Cable
MB991910: MUT-III Main Harness A
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.
To prevent damage to diagnostic tool MB991958, always
turn the ignition switch to the "LOCK" (OFF) position
before connecting or disconnecting diagnostic tool
MB991958.
(1) Connect the diagnostic tool MB991958. Refer to "How to
connect SWS monitor P.54B-13."
(2) Operate diagnostic 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 diagnostic tool MB991958 sounds.
Q: When the front door lock actuators are operated, does
the diagnostic tool MB991958 sound?
When the front door lock actuator (RH) is operated, the
diagnostic tool MB991958 does not sound. : Go to Step
2.
When the front door lock actuator (LH) is operated, the
diagnostic tool MB991958 does not sound. : Go to Step
8.
STEP 2. Check front door lock actuator (RH) connector
E-15 for loose, corroded or damaged terminals, or
terminals pushed back in the connector.
Q: Is front door lock actuator (RH) connector E-05 in good
condition?
YES : Go to Step 3.
NO : Repair or replace the damaged component(s). Refer
to GROUP 00E, Harness Connector Inspection
P.00E-2. If the functions described in "CIRCUIT
OPERATION" work normally, the input signal from the
front door lock actuator (RH) should be normal.

INPUT SIGNAL PROCEDURES
SIMPLIFIED WIRING SYSTEM (SWS)54B-454
STEP 5. Check the wiring harness between front door lock
actuator (RH) connector E-05 (terminal 3) and ground.
NOTE: Also check intermediate connector C-12 for loose, cor-
roded, or damaged terminals, or terminals pushed back in the
connector. If intermediate connector C-12 is damaged, repair or
replace the connector as described in GROUP 00E, Harness
Connector Inspection P.00E-2.
Q: Is the wiring harness between front door lock actuator
(RH) connector E-05 (terminal 3) and ground in good
condition?
YES : No action is necessary and testing is complete.
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
functions described in "CIRCUIT OPERATION" work
normally, the input signal from the front door lock
actuator (RH) should be normal.
STEP 6. Check ETACS-ECU connector C-217 for loose,
corroded or damaged terminals, or terminals pushed back
in the connector.
Q: Is ETACS-ECU connector C-217 in good condition?
YES : Go to Step 7.
NO : Repair or replace the damaged component(s). Refer
to GROUP 00E, Harness Connector Inspection
P.00E-2. If the functions described in "CIRCUIT
OPERATION" work normally, the input signal from the
front door lock actuator (RH) should be normal.

INPUT SIGNAL PROCEDURES
SIMPLIFIED WIRING SYSTEM (SWS)54B-455
STEP 7. Check the wiring harness between front door lock
actuator (RH) connector E-05 (terminal 1) and ETACS-ECU
connector C-217 (terminal 36).
NOTE: Also check intermediate connector C-12 for loose, cor-
roded, or damaged terminals, or terminals pushed back in the
connector. If intermediate connector C-12 is damaged, repair or
replace the connector as described in GROUP 00E, Harness
Connector Inspection P.00E-2.
Q: Is the wiring harness between front door lock actuator
(RH) connector E-05 (terminal 1) and ETACS-ECU
connector C-217 (terminal 36) in good condition?
YES : Replace the ETACS-ECU. If the functions described
in "CIRCUIT OPERATION" work normally, the input
signal from the front door lock actuator (RH) 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
functions described in "CIRCUIT OPERATION" work
normally, the input signal from the front door lock
actuator (RH) should be normal.

INPUT SIGNAL PROCEDURES
SIMPLIFIED WIRING SYSTEM (SWS)54B-456
STEP 8. 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 9.
NO : Repair or replace the damaged component(s). Refer
to GROUP 00E, Harness Connector Inspection
P.00E-2. If the functions described in "CIRCUIT
OPERATION" work normally, the input signal from the
front door lock actuator (LH) should be normal.
STEP 9. Check the front door lock actuator (LH).
Disconnect front door lock actuator (LH) connector E-15. Then
check continuity between the terminals.
Q: Is the front door lock actuator (LH) in good condition?
YES : Go to Step 10.
NO : Replace the front door lock actuator (LH). If the
functions described in "CIRCUIT OPERATION" work
normally, the input signal from the front door lock
actuator (LH) should be normal.
LEVER POSITION TESTER
CONNECTIONSPECIFIED
CONDITION
UNLOCK 3
1 Less than 2 ohms
LOCK 3
1 Open circuit

INPUT SIGNAL PROCEDURES
SIMPLIFIED WIRING SYSTEM (SWS)54B-458
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 P.00E-2.
Q: Is the wiring harness between front door lock actuator
(LH) connector E-15 (terminal 1) and ground in good
condition?
YES : No action is necessary and testing is complete.
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
functions described in "CIRCUIT OPERATION" work
normally, the input signal from the front door lock
actuator (LH) should be normal.
STEP 12. Check ETACS-ECU connector C-217 for loose,
corroded or damaged terminals, or terminals pushed back
in the connector.
Q: Is ETACS-ECU connector C-217 in good condition?
YES : Go to Step 13.
NO : Repair or replace the damaged component(s). Refer
to GROUP 00E, Harness Connector Inspection
P.00E-2. If the functions described in "CIRCUIT
OPERATION" work normally, the input signal from the
front door lock actuator (LH) should be normal.

INPUT SIGNAL PROCEDURES
SIMPLIFIED WIRING SYSTEM (SWS)54B-459
STEP 13. Check the wiring harness between front door
lock actuator (LH) connector E-15 (terminal 3) and
ETACS-ECU connector C-217 (terminal 43).
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 P.00E-2.
Q: Is the wiring harness between front door lock actuator
(LH) connector E-15 (terminal 3) and ETACS-ECU
connector C-217 (terminal 43) in good condition?
YES : Replace the ETACS-ECU. If the functions described
in "CIRCUIT OPERATION" work normally, the input
signal from the front door lock actuator (LH) 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
functions described in "CIRCUIT OPERATION" work
normally, the input signal from the front door lock
actuator (LH) should be normal.

INPUT SIGNAL PROCEDURES
SIMPLIFIED WIRING SYSTEM (SWS)54B-461
DIAGNOSIS
Required Special Tool:
MB991223: Harness Set
MB991958: Diagnostic Tool (MUT-III Sub Assembly)
MB991824: Vehicle Communication Interface (V.C.I.)
MB991827: MUT-III USB Cable
MB991910: MUT-III Main Harness A
STEP 1. Check the input signal (by using the pulse check
mode of the monitor).
Check the input signals from the door lock switch (incorporated
in the power window main switch and front power window sub
switch).
To prevent damage to diagnostic tool MB991958, always
turn the ignition switch to the "LOCK" (OFF) position
before connecting or disconnecting diagnostic tool
MB991958.
(1) Connect the diagnostic tool MB991958. Refer to "How to
connect SWS monitor P.54B-13."
(2) Operate diagnostic 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 diagnostic tool MB991958 sounds.
Q: When the door lock switch (incorporated in the power
window main switch and front power window sub
switch) is operated, does the diagnostic tool MB991958
sound?
When the door lock switch (incorporated in the power
window main switch) is operated, the diagnostic tool
MB991958 does not sound. : Go to Step 2.
When the door lock switch (incorporated in the front
power window sub switch) is operated, the diagnostic
tool MB991958 does not sound. : Go to Step 8.
STEP 2. Check power window main switch connector E-04
for loose, corroded or damaged terminals, or terminals
pushed back in the connector.
Q: Is power window main switch connector E-04 in good
condition?
YES : Go to Step 3.
NO : Repair or replace the damaged component(s). Refer
to GROUP 00E, Harness Connector Inspection
P.00E-2. If the central door locking system works
normally, input signal from the door lock switch
(power window main switch) should be normal.