Inspection Procedure E-1: Keyless Entry System: Keyless Entry System Does Not Operate.: Diagnosis

Required Special Tools: 

• MB991223: Harness Set
• MB991958: Scan Tool (MUT-III Sub Assembly)
  • MB991824: Vehicles communication interface
  • MB991827: MUT-III USB cable
  • MB991911: MUT-III Main harness B
• MB991813: SWS monitor kit
  • MB991806: SWS monitor cartridge
  • MB991812: SWS monitor harness (for column-ECU)
  • MB991922: Probe harness

1. STEP 1. Model confirmation. 

   Q: Which model is the vehicle? 

   ECLIPSE: Go to Step  3.

   ECLIPSE SPYDER  : Go to Step 2.

2. STEP 2. Confirm which transmitter switch fails. 

   Q: Which transmitter switch fails to operate correctly? 

   LOCK, UNLOCK and TRUNK LID OPEN  : Go to Step 3.

   LOCK and UNLOCK only  : Go to Step  5.

   TRUNK LID OPEN only  : Go to Step  7.

3. STEP 3. Use scan tool MB991958 to select "ECU COMM Check" on the SWS monitor display. 

   Check the ETACS-ECU.

   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. Connect special tool MB991911 before connecting special tool MB991812. Be sure to connect special tool MB991806 after turning on special tool MB991824.
   Fig 1: Connecting Scan Tool To Data Link Connector

   Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
   Fig 2: Connecting Scan Tool To Column Switch Connector

   Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
   1. Connect the special tool. Refer to "HOW TO CONNECT SWS MONITOR ."
   2. Turn the ignition switch to the "LOCK" (OFF) position.
   3. Operate scan tool MB991958 according to the procedure below to display "ECU COMM Check."
      1. Select "Interactive Diagnosis."
      2. Select "System Select."
      3. Select "SWS."
      4. Select "SWS MONITOR."
      5. Select "ECU COMM Check."
   4. Scan tool MB991958 should show "OK" on the "ECU COMM Check" menus for both the "ETACS ECU" menus.

   Q: Is "OK" displayed on the "ETACS ECU" menu? 

   1. YES:  Go to Step 4.
   2. NO:  Refer to INSPECTION PROCEDURE A-3: COMMUNICATION WITH THE ETACS-ECU IS IMPOSSIBLE ."
4. STEP 4. Check the input signal (by using the Pulse check mode of the monitor). 

   Check the input signals from the transmitter.

   1. Connect scan tool MB991958 to the data link connector.
   2. Operate scan tool MB991958 according to the procedure below to display "Pulse check."
      1. Select "Interactive Diagnosis."
      2. Select "System select."
      3. Select "SWS."
      4. Select "Pulse Checking."
   3. Push the transmitter "LOCK", "UNLOCK" or "TRUNK" switch.
   4. Check that scan tool MB991958 sounds

   Q: When the transmitter "LOCK", "UNLOCK" or "TRUNK" switch is pushed, does scan tool MB991958 sound? 

   1. YES:  Replace the ETACS-ECU. All the doors can be locked or unlocked by means of the transmitter. And the trunk lid opened by means of the transmitter.
   2. NO:  Refer to INSPECTION PROCEDURE P-13: TRANSMITTER: THE ETACS-ECU DOES NOT RECEIVE ANY SIGNAL FROM THE LOCK, UNLOCK, TRUNK OR PANIC SWITCH .
   Fig 3: Connecting Scan Tool To Data Link Connector

   Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
5. STEP 5. Check the central door locking system. 

   Q: Does the central door locking system work normally? 

   1. YES:  Go to Step 6.
   2. NO:  Refer to INSPECTION PROCEDURE C-1 "CENTRAL DOOR LOCKING SYSTEM DOES NOT WORK AT ALL ."
6. STEP 6. Check the input signal (by using the Pulse check mode of the monitor). 

   Check the input signals from the transmitter.

   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.
   1. Connect scan tool MB991958 to the data link connector.
   2. Operate scan tool MB991958 according to the procedure below to display "Pulse check."
      1. Select "Interactive Diagnosis."
      2. Select "System select."
      3. Select "SWS."
      4. Select "Pulse Checking."
   3. Push the transmitter "LOCK" or "UNLOCK" switch.
   4. Check that scan tool MB991958 sounds

   Q: When the transmitter "LOCK" or "UNLOCK" switch is pushed, does scan tool MB991958 sound? 

   1. YES:  Replace the ETACS-ECU. All the doors can be locked or unlocked by means of the transmitter.
   2. NO:  Refer to INSPECTION PROCEDURE P-13: TRANSMITTER: THE ETACS-ECU DOES NOT RECEIVE ANY SIGNAL FROM THE LOCK, UNLOCK, TRUNK OR PANIC SWITCH .
   Fig 4: Connecting Scan Tool To Data Link Connector

   Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
7. STEP 7. Check the input signal (by using the Pulse check mode of the monitor). 

   Check the input signals from the transmitter.

   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.
   1. Connect scan tool MB991958 to the data link connector.
   2. Operate scan tool MB991958 according to the procedure below to display "Pulse check."
      1. Select "Interactive Diagnosis."
      2. Select "System select."
      3. Select "SWS."
      4. Select "Pulse Checking."
   3. Push the transmitter "TRUNK" switch.
   4. Check that scan tool MB991958 sounds
      Fig 5: Connecting Scan Tool To Data Link Connector

      Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

   Q: When the transmitter "TRUNK" switch is pushed, does scan tool MB991958 sound? 

   1. YES:  Replace the ETACS-ECU. Trunk lid can be opened by means of the transmitter.
   2. NO:  Refer to INSPECTION PROCEDURE P-13: TRANSMITTER: THE ETACS-ECU DOES NOT RECEIVE ANY SIGNAL FROM THE LOCK, UNLOCK, TRUNK OR PANIC SWITCH .
8. STEP 8. Check the trunk lid opener actuator assembly. 
   1. Remove the trunk lid opener actuator assembly.
   2. Check that the trunk lid opener actuator assembly lever function.
   BATTERY CONNECTION AND LEVER POSITION
   
   

   BATTERY CONNECTION	LEVER FUNCTION
   Connect terminal 2 to the negative battery terminal Connect terminal 1 to the positive battery terminal	The lever moves toward the arrow direction momentarily
   Not applied	The lever does not move

   Q: Is the trunk lid opener actuator assembly in good condition? 

   1. YES:  Replace the trunk lid opener actuator assembly. Check that the trunk lid opener actuator assembly works normally.
   2. NO:  Go to Step 9.
   Fig 6: Identifying Trunk Lid Opener Actuator Assembly

   Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
9. STEP 9. Measure at trunk lid opener actuator assembly connector F-38 in order check the ground system to trunk lid opener actuator assembly. 
   1. Disconnect trunk lid opener actuator assembly connector F-38, and measure at the harness side.
      Fig 7: Locating Trunk Lid Opener Actuator Assembly Connector F-38

      Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
   2. Measure the resistance value between terminal 2 and ground.
   • The measured value should be 2 ohm or less.

   Q: Does the measured resistance value correspond with this range? 

   1. YES:  Go to Step  12.
   2. NO: Go to Step 10.
   Fig 8: Measuring Resistance Value Between F-38 Connector Terminal 2 And Ground

   Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
10. STEP 10. Check the trunk lid opener actuator connector F-38 for damage. 

    Q: Is the trunk lid opener actuator connector F-38 in good condition? 

    1. YES:  Go to Step 11.
    2. NO:  Repair or replace the connector. Refer to HARNESS CONNECTOR INSPECTION . Check that the trunk lid opener work normally.
    Fig 9: Locating Trunk Lid Opener Actuator Assembly Connector F-38

    Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
11. STEP 11. Check the wiring harness between trunk lid opener actuator connector F-38 (terminal 2) and ground 

    Q: Is the wiring harness between the trunk lid opener actuator connector F-38 (terminal 2) and ground in good condition? 

    1. YES:  No action to be taken.
    2. NO:  Repair the wiring harness. Check that the trunk lid opener work normally.
    Fig 10: Locating Trunk Lid Opener Actuator Assembly Connector F-38

    Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
12. STEP 12. Check the trunk lid opener actuator connector F-38 and ETACS-ECU connector C-117 for damage. 

    Q: Are trunk lid opener actuator connector F-38 and ETACS-ECU connector C-117 in good condition? 

    1. YES:  Go to Step 13.
    2. NO:  Repair or replace the connector. Refer to HARNESS CONNECTOR INSPECTION . Check that the trunk lid opener work normally.
    Fig 11: Locating Trunk Lid Opener Actuator Assembly Connector F-38

    Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
    Fig 12: Locating ETACS-ECU Connector C-117

    Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
13. STEP 13. Check the wiring harness between trunk lid opener actuator connector F-38 (terminal 1) and ETACS-ECU connector C-117 (terminal 32). 
    Fig 13: Locating Trunk Lid Opener Actuator Assembly Connector F-38

    Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
    Fig 14: Locating ETACS-ECU Connector C-117

    Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
    NOTE: Also check intermediate connector C-90. If intermediate connector C-90 is damaged, repair or replace the connector as described in HARNESS CONNECTOR INSPECTION .

    Q: Is the wiring harness between the trunk lid opener actuator connector F-38 (terminal 1) and ETACS-ECU connector C-117 (terminal 32) in good condition? 

    1. YES:  Replace the ETACS-ECU. Check that the Keyless entry system work normally.
    2. NO:  Repair the wiring harness. Check that the Keyless entry system work normally.
    Fig 15: Locating Intermediate Connector C-90

    Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.