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TECHNICAL DESCRIPTION (COMMENT) Mitsubishi Lancer Evolution VIII

Ignition Switch - Evolution 15 illustrations ~1194 words

TECHNICAL DESCRIPTION (COMMENT)

  1. This malfunction may be caused by a defective immobilizer-ECU, ECM, or a defect in the communication line between the immobilizer-ECU and ECM. If this malfunction appears when the MFI system and scan tool MB991958 can communicate each other, MFI system DTC P0513 will reset. Refer to «DTC P0513: IMMOBILIZER MALFUNCTION»(/mitsubishi/lancer-evolution/viii-2003-2005/remont/testing-diagnostics/#multiport-fuel-injection-20l-evolution) .
  2. If the MFI system is normal, the MFI relay can be determined as normal. In addition, if the MFI system and scan tool MB991958 can communicate each other, the circuits between the data link connector and the ECM can determined as normal. NOTE: If this malfunction appears, MFI system DTC P0513 will be output. Refer to «DTC P0513: IMMOBILIZER MALFUNCTION»(/mitsubishi/lancer-evolution/viii-2003-2005/remont/testing-diagnostics/#multiport-fuel-injection-20l-evolution) .
  1. Malfunction of the immobilizer-ECU
  2. Malfunction of the ECM
  3. The wiring harness or connectors may have loose, corroded, or damaged terminals, or terminals pushed back in the connector

Required Special Tools

  1. MB991958: Scan Tool (MUT-III Sub Assembly) MB991824: Vehicle Communication Interface (V.C.I.) MB991827: MUT-III USB Cable MB991911: MUT-III Main Harness B

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  1. STEP 1. Check if scan tool MB991958 can communicate with the MFI system and if an MFI system DTC other than P0513 is output. CAUTION: To prevent damage to scan tool MB991958, always turn the ignition switch to the "LOCK" (OFF) position before connecting or disconnecting scan tool MB991502 or MB991958. Use scan tool MB991958 to confirm the MFI system DTC. Connect scan tool MB991958 to the data link connector. Turn the ignition switch "ON" position. Read the MFI system diagnosis code. Q: Can scan tool MB991958 communicate with the MFI system? Is an MFI system DTC other than P0513 output? YES: Go to Step 2. NO: Refer to «MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS»(/mitsubishi/lancer-evolution/viii-2003-2005/remont/testing-diagnostics/#multiport-fuel-injection-20l-evolution) .
  2. STEP 2. Check immobilizer-ECU connector C-22 for loose, corroded or damaged terminals, or terminals pushed back in the connector. Q: Is immobilizer-ECU connector C-22 in good condition? YES: Go to Step 3. NO: Repair or replace the damaged component(s). Refer to «HARNESS CONNECTOR INSPECTION»(/mitsubishi/lancer-evolution/viii-2003-2005/remont/oem-general-information/#general-evolution) . Confirm that scan tool MB991958 communicates normally.
  3. STEP 3. Check the battery power supply (MFI relay) circuit to the immobilizer-ECU. Measure the voltage at immobilizer-ECU connector C-22. Disconnect immobilizer-ECU connector C-22 and measure the voltage available at the wiring harness side of the connector. Turn the ignition switch to the "ON" position. Measure the voltage between terminal 7 and ground. Q: Is battery voltage (approximately 12 volts) present? YES: Go to Step 6 . NO: Go to Step 4.
  4. STEP 4. Check MFI relay connector B-12X for loose, corroded or damaged terminals, or terminals pushed back in the connector. Q: Is MFI relay connector B-12X in good condition? YES: Go to Step 5. NO: Repair or replace the damaged component(s). Refer to «HARNESS CONNECTOR INSPECTION»(/mitsubishi/lancer-evolution/viii-2003-2005/remont/oem-general-information/#general-evolution) . Confirm that scan tool MB991958 communicates normally.
  5. STEP 5. Check the harness wires between immobilizer-ECU connector C-22 (terminal 7) and MFI relay connector B-12X (terminal 4). NOTE: Also check intermediate connector C-123, joint connector C-21 and C-105 for loose, corroded, or damaged terminals, or terminals pushed back in the connector. If intermediate connector C-123, joint connector C-21 or C-105 is damaged, Repair or replace the damaged component(s). Refer to «HARNESS CONNECTOR INSPECTION»(/mitsubishi/lancer-evolution/viii-2003-2005/remont/oem-general-information/#general-evolution) . Q: Are the harness wires between immobilizer-ECU connector C-22 (terminal 7) and MFI relay connector B-12X (terminal 4) in good condition? YES: There is no action to be taken. NO: Replace damaged component(s). Confirm that scan tool MB991958 communicates normally.
  6. STEP 6. Check the ground circuit to the immobilizer-ECU. Measure the resistance at immobilizer-ECU connector C-22. Disconnect immobilizer-ECU connector C-22 and measure the resistance available at the wiring harness side of the connector. Measure the resistance between terminal 3 and ground. Q: Is the resistance less than 2 ohms? YES: Go to Step 8 . NO: Go to Step 7.
  7. STEP 7. Check the harness wire between immobilizer-ECU connector C-22 (terminal 3) and ground. NOTE: Also check joint connector C-06 for loose, corroded, or damaged terminals, or terminals pushed back in the connector. If joint connector C-06 is damaged, Repair or replace the damaged component(s). Refer to «HARNESS CONNECTOR INSPECTION»(/mitsubishi/lancer-evolution/viii-2003-2005/remont/oem-general-information/#general-evolution) . Q: Is the harness wire between immobilizer-ECU connector C-22 (terminal 3) and ground in good condition? YES: There is no action to be taken. NO: Repair or replace the damaged component(s). Confirm that scan tool MB991958 communicates normally.
  8. STEP 8. Check ECM connector C-117 for loose, corroded or damaged terminals, or terminal pushed back in the connector. Q: Is ECM connector C-117 in good condition? YES: Go to Step 9. NO: Repair or replace the damaged component(s). Refer to «HARNESS CONNECTOR INSPECTION»(/mitsubishi/lancer-evolution/viii-2003-2005/remont/oem-general-information/#general-evolution) . Confirm that scan tool MB991958 communicates normally.
  9. STEP 9. Check the harness wires between immobilizer-ECU connector C-22 (terminal 5) and ECM connector C-117 (terminal 51). NOTE: Also check intermediate connector C-124 for loose, corroded, or damaged terminals, or terminals pushed back in the connector. If intermediate connector C-124 is damaged, Repair or replace the damaged component(s). Refer to «HARNESS CONNECTOR INSPECTION»(/mitsubishi/lancer-evolution/viii-2003-2005/remont/oem-general-information/#general-evolution) . Q: Are the harness wires between immobilizer-ECU connector C-22 (terminal 5) and ECM connector C-117 (terminal 51) in good condition? YES: Go to Step 10. NO: Repair or replace the damaged component(s). Confirm that scan tool MB991958 communicates normally.
  10. STEP 10. Replace the immobilizer-ECU or ECM. Replace the immobilizer-ECU or ECM. Q: Did the communication with the scan tool become possible after replacing the immobilizer-ECU or the engine control module? YES: Register the password (secret code) and encrypted code P.54A-37. Confirm that scan tool MB991958 communicates normally NO: Go to Step 11.
  11. STEP 11. Recheck for malfunction. Q: Is a malfunction eliminated? YES: The procedure is complete. (If no malfunctions are found in all steps, an intermittent malfunction is suspected. Refer to «HOW TO COPE WITH INTERMITTENT MALFUNCTIONS»(/mitsubishi/lancer-evolution/viii-2003-2005/remont/oem-general-information/#general-evolution__how-to-cope-with-intermittent-malfunctions) ). NO: Replace the immobilizer-ECU or ECM.

The ignition key transponder or the immobilizer-ECU is suspected to be defective.

  1. Malfunction of the ignition key
  2. Malfunction of immobilizer-ECU

Required Special Tools

  1. MB991958: Scan Tool (MUT-III Sub Assembly) MB991824: Vehicle Communication Interface (V.C.I.) MB991827: MUT-III USB Cable MB991911: MUT-III Main Harness B

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  1. STEP 1. Using scan tool MB991958, read the diagnostic trouble code (DTC). CAUTION: To prevent damage to scan tool MB991958, always turn the ignition switch to the "LOCK" (OFF) position before connecting or disconnecting scan tool MB991958. Use scan tool MB991958 to check if DTC 11 is set. Connect scan tool MB991958 to the data link connector. Turn the ignition switch "ON" position. Read the immobilizer system diagnosis code. Q: Does DTC11 reset? YES: Refer to «DTC 11: TRANSPONDER COMMUNICATION SYSTEM OR RADIO INTERFERENCE OF ENCRYPTED CODE»(/mitsubishi/lancer-evolution/viii-2003-2005/remont/door-locks-anti-theft-systems/#ignition-switch-evolution) . NO: Replace the ignition key that cannot be registered. Then re-register the encrypted code (Refer to «ON-VEHICLE SERVICE»(/mitsubishi/lancer-evolution/viii-2003-2005/remont/door-locks-anti-theft-systems/#ignition-switch-evolution) ). Verify that the ignition key can be registered, then Go to Step 2.
  2. STEP 2. Retest the system. Q: Does registered ignition key function properly? YES: The procedure is complete. (If no malfunctions are found in all steps, an intermittent malfunction is suspected. Refer to «HOW TO COPE WITH INTERMITTENT MALFUNCTIONS»(/mitsubishi/lancer-evolution/viii-2003-2005/remont/oem-general-information/#general-evolution__how-to-cope-with-intermittent-malfunctions) ). NO: Replace the immobilizer-ECU.