INSPECTION PROCEDURE 1: Speedometer does not Work.: Diagnosis

Required Special Tools: 

• MB991223: Harness Set
• 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

1. STEP 1. Check the speedometer by observing the other meters. 

   Check to see that the tachometer, fuel gauge and water thermometer are operating normally.

   Q: Do all other meters operate? 

   1. YES < other meters all operate>:  Go to Step 2.
   2. NO < one of the meters do not operate>:  Refer to INSPECTION PROCEDURE 5: Combination Meter does not Work.  .
2. STEP 2. Using scan tool MB991958, read the MFI system diagnostic trouble code. 
   CAUTION: To prevent damage to scan tool MB991958 always turn the ignition switch to "LOCK" (OFF) position before connecting or disconnecting scan tool.
   1. Connect scan tool MB991958 to the data link connector.
   2. Turn the ignition switch "ON" position.
   3. Check the MFI system diagnostic trouble code.

   Q: Are MFI system-related DTC(s) sets to the MFI system? 

   1. YES:  Refer to MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS .
   2. NO:  Go to Step 3.
   Fig 1: Connecting Scan Tool To Data Link Connector

   Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
3. STEP 3. Check combination meter connector D-03 and vehicle speed sensor connector C-08 for loose, corroded or damaged terminals, or terminals pushed back in the connector. 

   Q: Are combination meter connector D-03 and vehicle speed sensor connector C-08 in good condition? 

   1. YES:  Go to Step 4.
   2. NO:  Repair or replace the damaged component(s). Refer to HARNESS CONNECTOR INSPECTION . The speedometer should work normally.
   Fig 2: Locating Vehicle Speed Sensor Connector C-08

   Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
   Fig 3: Locating Combination Meter Connector D-03

   Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
4. STEP 4. Check the wiring harness between combination meter connector D-03 (terminal 65) and vehicle speed sensor connector C-08 (terminal 3). 
   Fig 4: Locating Vehicle Speed Sensor Connector C-08

   Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
   Fig 5: Locating Combination Meter Connector D-03

   Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
   NOTE: Also check intermediate connector E-111, E-114 and joint connector (4) D-116. If intermediate connector E-111, E-114 or joint connector (4) D-116 are damaged, repair or replace the connector as described in HARNESS CONNECTOR INSPECTION .

   Q: Is the wiring harness between combination meter connector D-03 (terminal 65) and vehicle speed sensor connector C-08 (terminal 3) in good condition? 

   1. YES:  Go to Step 5.
   2. NO:  Repair the wiring harness. The speedometer should work normally.
   Fig 6: Locating Joint Connector D-116

   Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
   Fig 7: Locating Intermediate Connector E-111 And E-114

   Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
5. STEP 5. Check the speedometer by operating the auto-cruise control system. 

   Q: Does auto-cruise control work normally? 

   1. YES:  Replace the combination meter. The speedometer should work normally.
   2. NO:  Replace the PCM. The speedometer should work normally.