Mitsubishi Evolution X. Manual — part 1073
ETACS
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CHASSIS ELECTRICAL
54A-653
STEP 12. Check ETACS-ECU connector C-301 for loose,
corroded or damaged terminals, or terminals pushed back
in the connector.
Q: Is ETACS-ECU connector C-301 in good condition?
YES : Go to Step 13.
NO : Repair or replace the damaged component(s) (Refer
to GROUP 00E, Harness Connector Inspection
). Check that the input signal of front door
lock actuator (RH) is normal.
STEP 13. Check the wiring harness between front door
lock actuator (RH) connector E-07 (terminal 1) and
ETACS-ECU connector C-301 (terminal 10).
Check the input lines for open circuit and short circuit.
NOTE: Also check intermediate connector C-24 for loose, cor-
roded, or damaged terminals, or terminals pushed back in the
connector. If intermediate connector C-24 is damaged, repair or
replace the connector as described in GROUP 00E, Harness
Connector Inspection
.
Q: Is the wiring harness between front door lock actuator
(RH) connector E-07 (terminal 1) and ETACS-ECU
connector C-301 (terminal 10) in good condition?
YES : Replace the ETACS-ECU. Check that the input signal
of front door lock actuator (RH) is 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. Check that
the input signal of front door lock actuator (RH) is
normal.
ETACS
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CHASSIS ELECTRICAL
54A-654
Inspection Procedure 5: ETACS-ECU does not receive any signal from the front door switch (LH).
.
TECHNICAL DESCRIPTION (COMMENT)
If there is an error to the front door switch (LH) input
signal, the front door switch (LH) signal is no longer
output to the communication line.
.
TROUBLESHOOTING HINTS
• The front door switch (LH) may be defective
• The ETACS-ECU may be defective
• The wiring harness or connectors may have
loose, corroded, or damaged terminals, or termi-
nals pushed back in the connector
DIAGNOSIS
Required Special Tools:
• MB991223: Harness Set
• MB992006: Extra Fine Probe
ETACS-
ECU
FRONT DOOR
SWITCH (LH)
Front Door Switch (LH) Input Circuit
AC708972AQ
Connector: C-313
ETACS-ECU
C-313 (BR)
AC708955AQ
Connector: D-28
ETACS
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CHASSIS ELECTRICAL
54A-655
STEP 1. Check front door switch (LH) connector D-28 for
loose, corroded or damaged terminals, or terminals
pushed back in the connector.
Q: Is front door switch (LH) connector D-28 in good
condition?
YES : Go to Step 2.
NO : Repair or replace the damaged component(s) (Refer
to GROUP 00E, Harness Connector Inspection
). Check that the input signal of front door
switch (LH) is normal.
STEP 2. Check the front door switch (LH).
Remove the front door switch (LH). Then check the continuity
between the switch terminals and the switch body.
Q: Is the driver's door switch in good condition?
YES : Go to Step 3.
NO : Replace the front door switch (LH). Check that the
input signal of front door switch (LH) is normal.
STEP 3. Measure at the lower metal part of the front door
switch (LH) in order to check the ground circuit to the front
door switch (LH).
NOTE: Check that the front door switch (LH) is grounded to the
vehicle body by means of its mounting screw.
Remove the cap, and measure the resistance value between
the lower metal part and the ground.
• The resistance should equal 2 ohms or less.
Q: Is the measured resistance 2 ohms or less?
YES : Go to Step 4.
NO : Check the fit of the switch, and repair if necessary.
Check that the input signal of front door switch (LH) is
normal.
STEP 4. Check ETACS-ECU connector C-313 for loose,
corroded or damaged terminals, or terminals pushed back
in the connector.
Q: Is ETACS-ECU connector C-313 in good condition?
YES : Go to Step 5.
NO : Repair or replace the damaged component(s) (Refer
to GROUP 00E, Harness Connector Inspection
). Check that the input signal of front door
switch (LH) is normal.
Switch position
Tester
connection
Specified condition
Released
3
− switch body
Continuity exists
(2 ohms or less)
Pressed
3
− switch body
Open circuit
ETACS
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CHASSIS ELECTRICAL
54A-656
STEP 5. Check the wiring harness between driver's door
switch connector D-28 (terminal 3) and ETACS-ECU
connector C-313 (terminal 16).
Check the input lines for open circuit and short circuit.
Q: Is the wiring harness between driver's door switch
connector D-28 (terminal 3) and ETACS-ECU connector
C-313 (terminal 16) in good condition?
YES : Replace the ETACS-ECU. Check that the input signal
of front door switch (LH) is 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. Check that
the input signal of front door switch (LH) is normal.
Inspection Procedure 6: ETACS-ECU does not receive any signal from the front door switch (RH).
.
ETACS-
ECU
FRONT DOOR
SWITCH (RH)
Front Door Switch (RH) Input Circuit
AC708972AQ
Connector: C-313
ETACS-ECU
C-313 (BR)
AC708954 AQ
Connector: D-43
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