INSPECTION PROCEDURE 1: Speedometer does not Work.: Diagnosis

Required Special Tools: 

• MB991223: Harness Set
• MB991502: Scan Tool (MUT-II)

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? 

   YES < other meters all operate. >  : Go to Step 2.

   NO < one of the meters do not operate. >  : Refer to INSPECTION PROCEDURE 5  .

2. STEP 2. Using scan tool MB991502, read the diagnostic trouble code (DTC). 
   CAUTION: To prevent damage to the scan tool, always turn the ignition switch to "LOCK" (OFF) position before connecting or disconnecting the scan tool.
   1. Connect scan tool MB991502 to the data link connector.
   2. Turn the ignition switch to the "ON" position.
   3. Read the MFI system diagnostic trouble code.

   Q: Is DTC P0500 set? 

   YES  : Refer to MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS < 2.4L > or MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS < 3.0L > .

   NO:  Go to Step 3.

   Fig 1: Connecting Scan Tool To The Data Link Connector

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3. STEP 3. Check combination meter connector C-102, PCM connector C-117 < A/T-2.4 L >, C-119 < A/T-3.0 L > and vehicle speed sensor connector B-109 < M/T > for damage. 
   Fig 2: Checking Vehicle Speed Sensor Connector B-109

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   Fig 3: Checking Vehicle Speed Sensor Connector B-109

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   Fig 4: Checking Combination Meter Connector C-102

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   Q: Are combination meter connector C-102, PCM connector C-117 < A/T-2.4 L >, C-119 < A/T-3.0 L > and vehicle speed sensor connector B-109 < M/T > in good condition? 

   YES  : Go to Step 4.

   NO:  Repair or replace the connector(s). Refer to , HARNESS CONNECTOR INSPECTION . The speedometer should work normally.

   Fig 5: Checking PCM Connector C-117 And C-119

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4. STEP 4. Check the wiring harnesses between combination meter connector C-102 (terminal 44) and PCM connector C-117 < A/T-2.4 L > (terminal 80), C-119 < A/T-3.0 L > (terminal 80) or vehicle speed sensor connector B-109 < M/T > (terminal 3). 
   Fig 6: Checking Vehicle Speed Sensor Connector B-109

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   Fig 7: Checking Vehicle Speed Sensor Connector B-109

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   Fig 8: Checking Combination Meter Connector C-102

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   Fig 9: Checking Intermediate Connectors C-25

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   NOTE: Also check intermediate connectors B-106 < M/T >, C-25 and joint connector C-140. If intermediate connectors B-106 < M/T >, C-25 or joint connector C-140 are damaged, repair or replace the connector as described in , HARNESS CONNECTOR INSPECTION .

   Q: Are the wiring harnesses between combination meter connector C-102 (terminal 44) and PCM connector C-117 < A/T-2.4 L > (terminal 80) C-119 < A/T-3.0 L > (terminal 80) or vehicle speed sensor connector B-109 < M/T > (terminal 3) in good condition? 

   YES  : Go to Step 5.

   NO:  Repair the wiring harness(es). The speedometer should work normally.

   Fig 10: Checking Joint Connector C-140

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5. STEP 5. Check the speedometer by operating the auto-cruise control system. 

   Q: Does auto-cruise control work? 

   YES  : Replace the combination meter. The speedometer should work normally.

   NO:  Replace the vehicle speed sensor < M/T > or PCM < A/T >. The speedometer should work normally.