Mitsubishi Evolution X. Manual — part 547
DIAGNOSIS
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KEYLESS OPERATION SYSTEM (KOS)
42B-95
DTC B2410: Rear antenna(indoor) open
CAUTION
When replacing the ECU, always check that the
communication circuit is normal.
AC609425
KOS-ECU
KEYLESS
OPERATION
KEY
SKY BLUE
SKY BLUE
SKY BLUE
SKY BLUE
RED- BLA
CK
RED- BLA
CK
RED- BLA
CK
RED- BLA
CK
BLA
CK
-WHITE
BLA
CK
-BLUE
BLA
CK
-BLUE
Inside Transmission Antenna assembly (Rear) Circuit
AC
INSIDE TRANSMISSION
ANTENNA ASSEMBLY
(REAR)
AC708950AZ
Connector: C-05
AC708951AZ
Connector: C-23
DIAGNOSIS
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KEYLESS OPERATION SYSTEM (KOS)
42B-96
.
DTC SET CONDITION
If an open circuit is detected in the inside transmitter
antenna (rear), the DTC is set.
.
TECHNICAL DESCRIPTION (COMMENT)
When the ignition push switch is pressed, or when
the antenna open circuit detection request is
received from the diagnosis function, the failure is
detected.
.
TROUBLESHOOTING HINTS
• Malfunction of the inside transmitter antenna
assembly (rear)
• Malfunction of the KOS-ECU
• Damaged wiring harness and connectors
DIAGNOSIS
STEP 1. Check KOS-ECU connector C-05 and inside
transmitter antenna assembly (rear) connector F-02 for
loose, corroded or damaged terminals, or terminals
pushed back in the connector.
Q: Are KOS-ECU connector C-05 and inside transmitter
antenna assembly (rear) connector F-02 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 inside transmitter antenna
assembly (rear) works normally.
AC708955
Connector: D-11
AO
AC708970AL
Connector: F-02
DIAGNOSIS
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KEYLESS OPERATION SYSTEM (KOS)
42B-97
STEP 2. Check the wiring harness between the KOS-ECU
connector C-05 (terminal Nos. 6, 20, 40) and inside
transmitter antenna assembly (rear) connector F-02
(terminal Nos. 3, 2, 1) for open circuit.
(1) Disconnect KOS-ECU connector C-05 and inside
transmitter antenna assembly (rear) connector F-02, and
check the wiring harness.
(2) Check the wiring harness between KOS-ECU connector
C-05 (terminal No.6) and inside transmitter antenna
assembly (rear) connector F-02 (terminal No.3).
OK: Continuity exists (2
Ω or less)
(3) Check the wiring harness between KOS-ECU connector
C-05 (terminal No.20) and inside transmitter antenna
assembly (rear) connector F-02 (terminal No.2).
OK: Continuity exists (2
Ω or less)
AC709707GE
Harness side: C-05
Harness side: F-02
AC709707 GF
Harness side: C-05
Harness side: F-02
DIAGNOSIS
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KEYLESS OPERATION SYSTEM (KOS)
42B-98
(4) Check the wiring harness between KOS-ECU connector
C-05 (terminal No.40) and inside transmitter antenna
assembly (rear) connector F-02 (terminal No.1).
OK: Continuity exists (2
Ω or less)
Q: Is the wiring harness between KOS-ECU connector C-05
(terminal Nos. 6, 20, 40) and inside transmitter antenna
assembly (rear) connector F-02 (terminal Nos. 3, 2, 1) in
good condition?
YES : Go to Step 3.
NO (KOS-ECU connector C-05 terminal No.6
− inside
transmitter antenna assembly (rear) connector F-02
terminal No.3.) : Repair the wiring harness between
KOS-ECU connector C-05 (terminal No.6) and inside
transmitter antenna assembly (rear) connector F-02
(terminal No.3).
NO (KOS-ECU connector C-05 terminal No.20
− inside
transmitter antenna assembly (rear) connector F-02
terminal No.2.) : Repair the wiring harness between
KOS-ECU connector C-05 (terminal No.20) and
inside transmitter antenna assembly (rear) connector
F-02 (terminal No.2).
NO (KOS-ECU connector C-05 terminal No.40
− inside
transmitter antenna assembly (rear) connector F-02
terminal No.1.) : Repair the wiring harness between
KOS-ECU connector C-05 (terminal No.40) and
inside transmitter antenna assembly (rear) connector
F-02 (terminal No.1).
AC709707GG
Harness side: F-02
Harness side: C-05
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