Inspection Procedure 2: The keyless operation key cannot be registered using scan tool: Diagnosis

WARNING: This page is about a different car, the 2008 Mitsubishi Lancer. However, it is still accessible from the selected car via links, so may be relevant.

Required Special Tools:

MB991958 Scan Tool (M.U.T.-III Sub Assembly)
- MB991824: Vehicle Communication Interface (V.C.I.)
- MB991827 M.U.T.-III USB Cable
- MB991910 M.U.T.-III Main Harness A (Vehicles with CAN communication system)

STEP 1. Check the keyless operation key inserted in the key cylinder for interference.
Q: Are there other keyless operation keys or anything that interferes with the communication (things that generate radio waves such as magnets and an air-cleaning device that has a power plug) near the keyless operation key inserted in the key cylinder?

YES : Move away or remove other keyless operation keys or things that interfere with the communication (things that generate radio waves such as magnets and a air-cleaning device that has a power plug) near the keyless operation key. Then, go to step 2.

NO : Go to Step 3.
STEP 2. Retest the system
Check that the keyless operation key can be registered.

Q: Is the keyless operation key that cannot be registered using scan tool?

YES : Go to Step 3.

NO : The procedure is complete.
STEP 3. Check which keyless operation key cannot be registered.
Q: Can any one of the keyless operation keys be registered?

YES (Only some keys) : Replace the key that cannot be registered and register the ID codes (Refer to ID CODES REGISTRATION PROCEDURES ). After registering the ID codes, go to Step 5.

NO (All keys) : Go to Step 4.
STEP 4. Retest the system
Check the scan tool screen when the key was not able to be registered.

Q: Is the error message of scan tool screen "Abnormality in key"?

YES (Abnormality in key) : Carry out DTC B1A25: Key ID unmatched and DTC B1A35: Transponder read error (Refer to < B1A25 > , < B1A35 > ). Then, go to Step 6.

NO (ECU internal error) : Replace KOS-ECU and register the ID codes (Refer to ID CODE REGISTRATION NECESSITY JUDGMENT TABLE ).
STEP 5. Retest the system
Check that the keyless operation key can be registered.

Q: Is the keyless operation key that cannot be registered using scan tool?

YES : Replace KOS-ECU and register the ID codes (Refer to ID CODE REGISTRATION NECESSITY JUDGMENT TABLE ).

NO : The procedure is complete.
STEP 6. Retest the system
Check that the keyless operation key can be registered.

Q: Is the keyless operation key that cannot be registered using scan tool?

YES : Go to Step 7.

NO : The procedure is complete.
STEP 7. Check receiver antenna module connector C-08, receiver antenna assembly connector D-14, KOS-ECU connector C-05, joint connector (6) C-16 and intermittent connector C-41 for loose, corroded or damaged terminals, or terminals pushed back in the connector.
Q: Is the receiver antenna module connector C-08, receiver antenna assembly connector D-14, KOS-ECU connector C-05, joint connector (6) C-16 and intermittent connector C-41 in good condition?

YES : Go to Step 8.

NO : Repair the defective connector.
STEP 8. 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)
  
  Fig 1: Checking Wiring Harness Between Connector Terminal 1 And 12
  Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
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)
  
  Fig 2: Checking Wiring Harness Between Connector Terminal 32 And 8
  Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
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)
  
  Fig 3: Checking Wiring Harness Between Connector Terminal 12 And 7
  Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
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)
  
  Fig 4: Checking Wiring Harness Between Connector Terminal 3 And 9
  Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
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)
  
  Fig 5: Checking Wiring Harness Between Connector Terminal 5 And 13
  Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
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 9.

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).
STEP 9. 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
  
  Fig 6: Checking Wiring Harness Between Reciever Anntena Assembly Connector D-14 Terminal 1 And Ground
  Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
3. Check the wiring harness between reciever anntena assembly connector D-14 (terminal No.8) and ground
  OK: No continuity
  
  Fig 7: Checking Wiring Harness Between Reciever Anntena Assembly Connector D-14 Terminal 8 And Ground
  Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
4. Check the wiring harness between reciever anntena assembly connector D-14 (terminal No.12) and ground
  OK: No continuity
  
  Fig 8: Checking Wiring Harness Between Reciever Anntena Assembly Connector D-14 Terminal 12 And Ground
  Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
5. Check the wiring harness between reciever anntena assembly connector D-14 (terminal No.3) and ground
  OK: No continuity
  
  Fig 9: Checking Wiring Harness Between Reciever Anntena Assembly Connector D-14 Terminal 3 And Ground
  Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
6. Check the wiring harness between reciever anntena assembly connector D-14 (terminal No.5) and ground
  OK: No continuity
  
  Fig 10: Checking Wiring Harness Between Reciever Anntena Assembly Connector D-14 Terminal 5 And Ground
  Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
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 10.

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 10. Replace the receiver antenna assembly, and retest the system.
Check that the keyless operation key can be registered.

Q: Is the keyless operation key that cannot be registered using scan tool?

YES : Go to Step 11.

NO : The procedure is complete.
STEP 11. Check the wiring harness between the receiver antenna module connector C-08 (terminal Nos. 2, 1, 8, 12) and the KOS-ECU connector C-05 (terminal Nos. 11, 12, 32, 7) for open circuit.
1. Disconnect reciever anntena module connector C-08 and KOS-ECU connector C-05, and check the wiring harness.
2. Check the wiring harness between reciever anntena module connector C-08 (terminal No.2) and KOS-ECU connector C-05 (terminal No.11)
  OK: Continuity exists (2 Ω or less)
  
  Fig 11: Checking Wiring Harness Between Connector Terminal 1 And 12
  Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
3. Check the wiring harness between reciever anntena module connector C-08 (terminal No.1) and KOS-ECU connector C-05 (terminal No.12)
  OK: Continuity exists (2 Ω or less)
  
  Fig 12: Checking Wiring Harness Between Connector Terminal 1 And 12
  Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
4. Check the wiring harness between reciever anntena module connector C-08 (terminal No.8) and KOS-ECU connector C-05 (terminal No.32)
  OK: Continuity exists (2 Ω or less)
  
  Fig 13: Checking Wiring Harness Between Connector Terminal 8 And 32
  Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
5. Check the wiring harness between reciever anntena module connector C-08 (terminal No.12) and KOS-ECU connector C-05 (terminal No.7)
  OK: Continuity exists (2 Ω or less)
  
  Fig 14: Checking Wiring Harness Between Connector Terminal 12 And 7
  Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
Q: Is the wiring harness between receiver antenna module connector C-08 (terminal Nos. 2, 1, 8, 12) and the KOS-ECU connector C-05 (terminal Nos. 11, 12, 32, 7) in good condition?

YES : Go to Step 12.

NO (receiver antenna module connector C-08 terminal No.2 - KOS-ECU connector C-05 terminal No.11.) : Repair the wiring harness between receiver antenna module connector C-08 (terminal No. 2) and the KOS-ECU connector C-05 (terminal No. 11).

NO (receiver antenna module connector C-08 terminal No.1 - KOS-ECU connector C-05 terminal No.12.) : Repair the wiring harness between receiver antenna module connector C-08 (terminal No. 1) and the KOS-ECU connector C-05 (terminal No. 12).

NO (receiver antenna module connector C-08 terminal No.8 - KOS-ECU connector C-05 terminal No.32.) : Repair the wiring harness between receiver antenna module connector C-08 (terminal No. 8) and the KOS-ECU connector C-05 (terminal No. 32).

NO (receiver antenna module connector C-08 terminal No.12 - KOS-ECU connector C-05 terminal No.7.) : Repair the wiring harness between receiver antenna module connector C-08 (terminal No. 12) and the KOS-ECU connector C-05 (terminal No. 7).
STEP 12. Check the wiring harness between the receiver antenna module connector C-08 (terminal Nos. 2, 1, 8, 12) and the ground for short circuit.
1. Disconnect reciever anntena module connector C-08, and check the wiring harness.
2. Check the wiring harness between reciever anntena module connector C-08 (terminal No.2) and ground
  OK: No continuity
  
  Fig 15: Checking Wiring Harness Between Reciever Anntena Module Connector C-08 Terminal 2 And Ground
  Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
3. Check the wiring harness between reciever anntena module connector C-08 (terminal No.1) and ground
  OK: No continuity
  
  Fig 16: Checking Wiring Harness Between Reciever Anntena Module Connector C-08 Terminal 1 And Ground
  Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
4. Check the wiring harness between reciever anntena module connector C-08 (terminal No.8) and ground
  OK: No continuity
  
  Fig 17: Checking Wiring Harness Between Reciever Anntena Module Connector C-08 Terminal 8 And Ground
  Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
5. Check the wiring harness between reciever anntena module connector C-08 (terminal No.12) and ground
  OK: No continuity
  
  Fig 18: Checking Wiring Harness Between Reciever Anntena Module Connector C-08 Terminal 12 And Ground
  Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
Q: Is the wiring harness between receiver antenna module connector C-08 (terminal Nos. 2, 1, 8, 12) and the ground in good condition?

YES : Go to Step 13.

NO (receiver antenna module connector C-08 terminal No.2 - ground.) : Repair the wiring harness between receiver antenna module connector C-08 (terminal No. 2) and the ground.

NO (receiver antenna module connector C-08 terminal No.1 - ground.) : Repair the wiring harness between receiver antenna module connector C-08 (terminal No. 1) and the ground.

NO (receiver antenna module connector C-08 terminal No.8 - ground.) : Repair the wiring harness between receiver antenna module connector C-08 (terminal No. 8) and the ground.

NO (receiver antenna module connector C-08 terminal No.12 - ground.) : Repair the wiring harness between receiver antenna module connector C-08 (terminal No. 12) and the ground.
STEP 13. Replace the receiver antenna module, and retest the system.
Check that the keyless operation key can be registered.

Q: Is the keyless operation key that cannot be registered using scan tool?

YES : Replace KOS-ECU and register the ID codes (Refer to ID CODE REGISTRATION NECESSITY JUDGMENT TABLE ).

NO : The procedure is complete.