Mitsubishi Evolution X. Manual - part 583

 

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Mitsubishi Evolution X. Manual - part 583

 

 

DIAGNOSIS

TSB Revision

KEYLESS OPERATION SYSTEM (KOS)

42B-239

NO <Normal condition is not displayed for item No. 
264.> : Refer to GROUP 54A, Inspection Procedure 3: 

ETACS-ECU does not receive any signal from the key 
reminder switch. 

P.54A-644

.

STEP 4. Check KOS-ECU connector C-05 and receiver 
antenna assembly connector D-14 for loose, corroded or 
damaged terminals, or terminals pushed back in the 
connector.
Q: Are KOS-ECU connector C-05 and receiver antenna 

assembly connector D-14 in good condition?
YES : Go to Step 5.
NO :  Repair or replace the damaged component(s). Refer 

to GROUP 00E, Harness Connector Inspection 

P.00E-2

. Check that the keyless entry system works 

normally.

DIAGNOSIS

TSB Revision

KEYLESS OPERATION SYSTEM (KOS)

42B-240

STEP 5. Check the wiring harness between the KOS-ECU 
connector C-05 (terminal Nos. 7, 9, 12 and 32) and receiver 
antenna assembly connector D-14 (terminal Nos. 12, 3, 1 
and 5) for open circuit.
(1) Disconnect KOS-ECU connector C-05 and receiver 

antenna assembly connector D-14, and check the wiring 
harness.

(2) Check the wiring harness between KOS-ECU connector 

C-05 (terminal No.7) and receiver antenna assembly 
connector D-14 (terminal No.12).

OK: Continuity exists (2 

Ω or less)

(3) Check the wiring harness between KOS-ECU connector 

C-05 (terminal No.9) and receiver antenna assembly 
connector D-14 (terminal No.3).

OK: Continuity exists (2 

Ω or less)

(4) Check the wiring harness between KOS-ECU connector 

C-05 (terminal No.12) and receiver antenna assembly 
connector D-14 (terminal No.1).

OK: Continuity exists (2 

Ω or less)

AC709707HG

Harness side: C-05

Harness side: D-14

AC709707HH

Harness side: C-05

Harness side: D-14

AC709707HI

Harness side: C-05

Harness side: D-14

DIAGNOSIS

TSB Revision

KEYLESS OPERATION SYSTEM (KOS)

42B-241

(5) Check the wiring harness between KOS-ECU connector 

C-05 (terminal No.32) and receiver antenna assembly 
connector D-14 (terminal No.5).

OK: Continuity exists (2 

Ω or less)

Q: Is the wiring harness between KOS-ECU connector C-05 

(terminal Nos. 7, 9, 12 and 32) and receiver antenna 
assembly connector D-14 (terminal Nos. 12, 3, 1 and 5) 
in good condition?
YES  : Go to Step 6.
NO (KOS-ECU connector C-05 terminal No.7 

− receiver 

antenna assembly connector D-14 terminal No.12.) : 

Repair the wiring harness between KOS-ECU 
connector C-05 (terminal No.7) and receiver antenna 
assembly connector D-14 (terminal No.12).

NO (KOS-ECU connector C-05 terminal No.9 

− receiver 

antenna assembly connector D-14 terminal No.3.) : 

Repair the wiring harness between KOS-ECU 
connector C-05 (terminal No.9) and receiver antenna 
assembly connector D-14 (terminal No.3).

NO (KOS-ECU connector C-05 terminal No.12 

− receiver 

antenna assembly connector D-14 terminal No.1.) : 

Repair the wiring harness between KOS-ECU 
connector C-05 (terminal No.12) and receiver 
antenna assembly connector D-14 (terminal No.1).

NO (KOS-ECU connector C-05 terminal No.32 

− receiver 

antenna assembly connector D-14 terminal No.5.) : 

Repair the wiring harness between KOS-ECU 
connector C-05 (terminal No.32) and receiver 
antenna assembly connector D-14 (terminal No.5).

AC709707 HJ

Harness side: C-05

Harness side: D-14

DIAGNOSIS

TSB Revision

KEYLESS OPERATION SYSTEM (KOS)

42B-242

STEP 6. Check the wiring harness between the receiver 
antenna assembly connector D-14 (terminal Nos. 12, 3, 1 
and 5) and the ground for short circuit.
(1) Disconnect receiver antenna assembly connector D-14, 

and check the wiring harness.

(2) Check the wiring harness between receiver antenna 

assembly connector D-14 (terminal No.12) and ground

OK: No continuity

(3) Check the wiring harness between receiver antenna 

assembly connector D-14 (terminal No.3) and ground

OK: No continuity

(4) Check the wiring harness between receiver antenna 

assembly connector D-14 (terminal No.1) and ground

OK: No continuity

(5) Check the wiring harness between receiver antenna 

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. 12, 3, 1 and 5) 
and the ground in good condition?
YES  : Go to Step 7.
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.

AC709707FX

Harness side: D-14

AC709707FW

Harness side: D-14

AC709707FZ

Harness side: D-14

AC709707FV

Harness side: D-14

 

 

 

 

 

 

 

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