Mitsubishi Evolution X. Manual — part 572
DIAGNOSIS
TSB Revision
KEYLESS OPERATION SYSTEM (KOS)
42B-195
STEP 9. Check the wiring harness between the receiver
antenna assembly connector D-14 (terminal Nos.1, 8, 12, 3,
5) and the KOS-ECU connector C-05 (terminal Nos.12, 32,
7, 9, 13) for open circuit.
(1) Disconnect reciever anntena assembly connector D-14 and
KOS-ECU connector C-05, and check the wiring harness.
(2) Check the wiring harness between reciever anntena
assembly connector D-14 (terminal No.1) and KOS-ECU
connector C-05 (terminal No.12)
OK: Continuity exists (2
Ω or less)
(3) Check the wiring harness between reciever anntena
assembly connector D-14 (terminal No.8) and KOS-ECU
connector C-05 (terminal No.32)
OK: Continuity exists (2
Ω or less)
(4) Check the wiring harness between reciever anntena
assembly connector D-14 (terminal No.12) and KOS-ECU
connector C-05 (terminal No.7)
OK: Continuity exists (2
Ω or less)
(5) Check the wiring harness between reciever anntena
assembly connector D-14 (terminal No.3) and KOS-ECU
connector C-05 (terminal No.9)
OK: Continuity exists (2
Ω or less)
AC709707
AC709707
Harness side: C-05
DK
Harness side: D-14
AC709707
Harness side: C-05
DL
Harness side: D-14
AC709707DM
Harness side: D-14
Harness side: C-05
AC709707DN
Harness side: C-05
Harness side: D-14
DIAGNOSIS
TSB Revision
KEYLESS OPERATION SYSTEM (KOS)
42B-196
(6) Check the wiring harness between reciever anntena
assembly connector D-14 (terminal No.5) and KOS-ECU
connector C-05 (terminal No.13)
OK: Continuity exists (2
Ω or less)
Q: Is the wiring harness between receiver antenna
assembly connector D-14 (terminal Nos.1, 8, 12, 3, 5)
and the KOS-ECU connector C-05 (terminal Nos.12, 32,
7, 9, 13) in good condition?
YES : Go to Step 10.
NO (receiver antenna assembly connector D-14 terminal
No.1
− KOS-ECU connector C-05 terminal No.12.) :
Repair the wiring harness between receiver antenna
assembly connector D-14 (terminal No.1) and the
KOS-ECU connector C-05 (terminal No.12).
NO (receiver antenna assembly connector D-14 terminal
No.8
− KOS-ECU connector C-05 terminal No.32.) :
Repair the wiring harness between receiver antenna
assembly connector D-14 (terminal No.8) and the
KOS-ECU connector C-05 (terminal No.32).
NO (receiver antenna assembly connector D-14 terminal
No.12
− KOS-ECU connector C-05 terminal No.7.) :
Repair the wiring harness between receiver antenna
assembly connector D-14 (terminal No.12) and the
KOS-ECU connector C-05 (terminal No.7).
NO (receiver antenna assembly connector D-14 terminal
No.3
− KOS-ECU connector C-05 terminal No.9.) : Repair
the wiring harness between receiver antenna
assembly connector D-14 (terminal No.3) and the
KOS-ECU connector C-05 (terminal No.9).
NO (receiver antenna assembly connector D-14 terminal
No.5
− KOS-ECU connector C-05 terminal No.13.) :
Repair the wiring harness between receiver antenna
assembly connector D-14 (terminal No.5) and the
KOS-ECU connector C-05 (terminal No.13).
AC709707DO
Harness side: C-05
Harness side: D-14
DIAGNOSIS
TSB Revision
KEYLESS OPERATION SYSTEM (KOS)
42B-197
STEP 10. Check the wiring harness between the receiver
antenna assembly connector D-14 (terminal Nos.1, 8, 12, 3,
5) and the ground for short circuit.
(1) Disconnect reciever anntena assembly connector D-14,
and check the wiring harness.
(2) Check the wiring harness between reciever anntena
assembly connector D-14 (terminal No.1) and ground
OK: No continuity
(3) Check the wiring harness between reciever anntena
assembly connector D-14 (terminal No.8) and and ground
OK: No continuity
(4) Check the wiring harness between reciever anntena
assembly connector D-14 (terminal No.12) and and ground
OK: No continuity
(5) Check the wiring harness between reciever anntena
assembly connector D-14 (terminal No.3) and ground
OK: No continuity
AC709707FZ
Harness side: D-14
AC709707FY
Harness side: D-14
AC709707FX
Harness side: D-14
AC709707FW
Harness side: D-14
DIAGNOSIS
TSB Revision
KEYLESS OPERATION SYSTEM (KOS)
42B-198
(6) Check the wiring harness between reciever anntena
assembly connector D-14 (terminal No.5) and ground
OK: No continuity
Q: Is the wiring harness between receiver antenna
assembly connector D-14 (terminal Nos.1, 8, 12, 3, 5)
and the ground in good condition?
YES : Go to Step 11.
NO (receiver antenna assembly connector D-14 terminal
No.1
− ground.) : Repair the wiring harness between
receiver antenna assembly connector D-14 (terminal
No.1) and the KOS-ECU connector C-05 (terminal
No.12).
NO (receiver antenna assembly connector D-14 terminal
No.8
− ground.) : Repair the wiring harness between
receiver antenna assembly connector D-14 (terminal
No.8) and the ground.
NO (receiver antenna assembly connector D-14 terminal
No.12
− ground.) : Repair the wiring harness between
receiver antenna assembly connector D-14 (terminal
No.12) and the ground.
NO (receiver antenna assembly connector D-14 terminal
No.3
− ground.) : Repair the wiring harness between
receiver antenna assembly connector D-14 (terminal
No.3) and the ground.
NO (receiver antenna assembly connector D-14 terminal
No.5
− ground.) : Repair the wiring harness between
receiver antenna assembly connector D-14 (terminal
No.5) and the ground.
STEP 11. Check the power supply circuit to the reciever
antenna assembly. Measure the voltage at reciever
antenna assembly connector D-14.
(1) Disconnect reciever antenna assembly connector D-14 and
measure the voltage available at the harness side of the
connector.
(2) Measure the voltage between terminal No. 12 and ground.
• The voltage should measure 5 volt.
Q: Is the measured voltage 5 volt?
YES : Go to Step 12.
NO : Replace KOS-ECU and register the ID codes. (Refer
to
AC709707FV
Harness side: D-14
AC608254 CZ
Harness side: D-14
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