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Home >> Mitsubishi >> 2000 >> Eclipse GT V6-3.0L SOHC >> Repair and Diagnosis >> Instrument Panel, Gauges and Warning Indicators >> Instrument Cluster / Carrier >> Testing and Inspection >> Symptom Related Diagnostic Procedures >> Symptom Diagnostic Procedures >> Procedure 1 - Speedometer Inoperative

Procedure 1 - Speedometer Inoperative

Speedometer Circuit:




Connectors:






CIRCUIT OPERATION
- The ignition switch (IG1) circuit is the power source for the speedometer and vehicle speed sensor.
- The vehicle speed sensor is installed on the transaxle. Four pulses are generated with one turn of the vehicle speed sensor shaft. These pulse signals are sent into the speedometer. The speedometer calculates the pulse signals, and operates the indicator. At the same time, the travel distance is calculated.

TECHNICAL DESCRIPTION (COMMENT)
The cause may be a faulty vehicle speed sensor circuit system or a faulty speedometer. Vehicle speed sensor is also used by the engine control module (ECM) or powertrain control module (PCM) , auto-cruise control-ECU and multi- center display.

TROUBLESHOOTING HINTS
- Malfunction of the vehicle speed sensor
- Malfunction of the combination meter (printed-circuit board or speedometer and tachometer)
- Malfunction of the ECM or PCM
- Malfunction of the auto-cruise control-ECU
- Malfunction of the multi-center display
- Damaged harness wires or connectors

DIAGNOSIS
Required Special Tools:
MB991223: Harness Set
MB991502: Scan Tool (MUT-II)






CAUTION: To prevent damage to scan tool MB991502, always turn the ignition switch to "LOCK" (OFF) position before connecting or disconnecting scan tool MB991502.

STEP 1. Is MFI system DTC P0500 output?
1. Connect scan tool MB991502 to the data link connector.
2. Turn the ignition switch to "ON" position.
3. Read the MFI system diagnostic trouble code.
If DTC P0500 is not displayed, go to Step 2.
If DTC P0500 is displayed, go to Step 12.

STEP 2. Check the odometer and trip odometer operation.
If the odometer and trip odometer is not displayed, go to Step 3.
If the odometer and trip odometer is displayed, go to Step 9.




STEP 3. Check the combination meter power supply circuit at the combination meter connector C-41.
1. Disconnect the combination meter connector C-41 and measure at the harness side.
2. Turn the ignition switch to "ON" position.
3. Voltage between terminal 52 and ground.
- Voltage should be approximately 12 volts (battery positive voltage).
If not approximately 12 volts, go to Step 4. If approximately 12 volts, go to Step 6.




STEP 4. Check the combination meter connector C-41 for damage.
If the combination meter connector C-41 is damaged, repair or replace it. Refer to Harness Connector Inspection.
The speedometer should work normally.
If the connector is in good condition, go to Step 5.







STEP 5. Check the harness wires between combination meter connector C-41 and ignition switch (IG1).

NOTE: After checking junction block connectors C-101 and C-104, check the wires. If junction block connectors C-101 and C-104 are damaged, repair or replace them. Refer to Harness Connector Inspection.

If the harness wires between combination meter connector C-41 and ignition switch (IG1) are damaged, repair them.
The speedometer should work normally.




STEP 6. Check the combination meter (speedometer) ground circuit at the combination meter connector C-42.
1. Disconnect the combination meter connector C-42 and measure at the harness side.
2. Resistance between terminal 34 and ground.
- Should be less than 2 Ohms. If open circuit go to Step 7.
If less than 2 Ohms, repair or repair the combination meter (printed-circuit board or speedometer and tachometer).
The speedometer should work normally.




STEP 7. Check the combination meter connector C-42 for damage.
If the combination meter connector C-42 is damaged, repair or replace it. Refer to Harness Connector Inspection.
The speedometer should work normally.
If the connector is in good condition, go to Step 8.




STEP 8. Check the harness wire between combination meter connector C-42 and ground.
If the harness wire between combination meter connector C-42 and ground is damaged, repair it.
The speedometer should work normally.

STEP 9. Check the combination meter vehicle speed sensor input signal circuit at the combination meter connector C42.

2.4L Engine:




3.0L Engine:




1. Disconnect the vehicle speed sensor connector B-36 or B-39 .
2. Disconnect the combination meter connector C-42 and measure at the harness side.
3. Turn the ignition switch to "ON" position.




4. Voltage between terminal 29 and ground.
- Voltage should be approximately 5 volts. If not approximately 5 volts, go to Step 10.
If approximately 5 volts, repair or repair the combination meter (printed-circuit board or speedometer and tachometer).
The speedometer should work normally.




STEP 10. Check the combination meter connector C-42 for damage.
If the combination meter connector C-42 is damaged, repair or replace it. Refer to Harness Connector Inspection.
The speedometer should work normally.
If the connector is in good condition, go to Step 11.

2.4L Engine:




3.0L Engine:













STEP 11. Check the harness wires between combination meter connector C-42 and vehicle speed sensor connector B-36 or B-39 .

NOTE: After checking intermediate connector C-28 and joint connector C-77, check the wires. If intermediate connector C-28 and joint connector C-77 are damaged, repair or replace them. Refer to Harness Connector Inspection.

If the harness wires between combination meter connector C-42 and vehicle speed sensor connector B-36 or B-39 are damaged, repair them.
The speedometer should work normally.




STEP 12. Check the vehicle speed sensor power supply circuit at the vehicle speed meter connector B-36 or B-39 .
1. Disconnect the vehicle speed sensor connector B-36 or B-39 and measure at the harness side.
2. Turn the ignition switch to "ON" position.
3. Voltage between terminal 1 and ground.
- Voltage should be approximately 12 volts (battery positive voltage).
If not approximately 12 volts, go to Step 13.
If approximately 12 volts, go to Step 15.

2.4L Engine:




3.0L Engine:




STEP 13. Check the vehicle speed sensor connector B-36 or B-39 for damage.
If the vehicle speed sensor connector B-36 or B-39 is damaged, repair or replace it. Refer to Harness Connector Inspection.
The speedometer should work normally.
If the connector is in good condition, go to Step 14.

2.4L Engine:




3.0L Engine:













STEP 14. Check the harness wires between vehicle speed sensor connector B-36 or B-39 and ignition switch (IG1).

NOTE: After checking junction block connectors C-101 and C-104, joint connector C-78 and intermediate connector C-28, check the wires. If junction block connectors C-101 and C-104, joint connector C-78 and intermediate connector C-28 are damaged, repair or replace them. Refer to Harness Connector Inspection.

If the harness wires between vehicle speed sensor connector B-36 or B-39 and ignition switch (IG1) are damaged, repair them.
The speedometer should work normally.




STEP 15. Check the vehicle speed sensor ground circuit at the vehicle speed sensor connector B-36 or B-39 .
1. Disconnect the vehicle speed sensor connector B-36 or B-39 and measure at the harness side.
2. Resistance between terminal 2 and ground.
- Should be less than 2 Ohms.
If open circuit, go to Step 16.
If less than 2 Ohms, go to Step 18.

2.4L Engine:




3.0L Engine:




STEP 16. Check the vehicle speed sensor connector B-36 or B-39 for damage.
If the vehicle speed connector B-36 or B-39 is damaged, repair or replace it. Refer to Harness Connector Inspection.
The speedometer should work normally.
If the connector is in good condition, go to Step 17.

2.4L Engine:




3.0L Engine:




STEP 17. Check the harness wire between vehicle speed sensor connector B-36 or B-39 and ground.
If the harness wire between vehicle speed sensor connector B-36 or B-39 and ground is damaged, repair it.
The speedometer should work normally.




STEP 18. Check the vehicle speed sensor signal circuit at the vehicle speed sensor connector B-36 and B-39 .
1. Disconnect the vehicle speed sensor connector B-36 or B-39 and measure at the harness side.
2. Turn the ignition switch to "ON" position.
3. Voltage between terminal 3 and ground.
- Voltage should be approximately 9 volts or more.
If approximately 9 volts, go to Step 19.
If more than approximately 9 volts, replace the vehicle speed sensor.
The speedometer should work normally.

2.4L Engine:




3.0L Engine:













STEP 19. Check the vehicle speed sensor connector B-36 or B-39 , multi-center display connector C-09, auto-cruise control-ECU connector C-20 , ECM or PCM connector C-60 <2.4L-M/T>, C-57 <2.4L-A/T>, C-62 <3.0L-M/T> or C-59 <3.0L-A/T> and combination meter connector C-42.
If the vehicle speed sensor connector B-36 or B-39 , multi-center display connector C-09, auto-cruise control-ECU connector C-20, ECM or PCM connector C-60 <2.4L-M/T>, C-57 <2.4L-A/T>, C-62 <3.0L-M/T> or C-59 <3.0L-A/T> and combination meter connector C-42 are damaged, repair or replace them. Renter to Harness Connector Inspection.
The speedometer should work normally.
If the connectors are in good condition, go to Step 20.

2.4L Engine:




3.0L Engine:



















STEP 20. Check the harness wires from vehicle speed sensor connector B-36 or B-39 to multi-center display connector C-09, auto-cruise control-ECU connector C-20 , ECM or PCM connector C-60 <2.4L-M/T>, C-57 <2.4L-A/T>, C-62 <3.0L-M/T> or C-59 <3.0L-A/T> and combination meter connector C-42.

NOTE: After checking joint connector C-77 and intermediate connector C-28, check the wires. If joint connector C-77 and intermediate connector C-28 are damaged, repair or replace them. Refer to Harness Connector Inspection.

If the harness wires from vehicle speed sensor connector B-36 or B-39 to multi-center display connector C-09, auto-cruise control-ECU connector C-20 , ECM or PCM connector C-60 <2.4L-M/T>, C-57 <2.4L-A/T>, C-62 <3.0L-M/T> or C-59 <3.0L-A/T> and combination meter connector C-42 are damaged, repair them.
The speedometer should work normally.
If harness wires are in good condition, go to Step 21.

STEP 21. Check each equipment.




Disconnect multi-center display connector C-09, auto-cruise control-ECU connector C-20 and combination meter connector C-42 in that order one by one. Then check that MFI system DTC P0500 does not reset under any conditions.

CAUTION: To prevent damage to scan tool MB991502, always turn the ignition switch to "LOCK" (OFF) position before connecting or disconnecting scan tool MB991502.
1. Connect scan tool MB991502 to the data link connector.
2. Turn the ignition switch to "ON" position.
3. Read the MFI system diagnostic trouble code.
If MFI system DTC P0500 does not reset when multi-center display connector C-09 is disconnected, replace the multi-center display.
The speedometer should work normally.




If MFI system DTC P0500 does not reset when auto-cruise control-ECU connector C-20 is disconnected, replace the auto-cruise control-ECU.
The speedometer should work normally.




If MFI system DTC P0500 does not reset when combination meter connector C-42 is disconnected, replace the combination meter (printed-circuit board or speedometer and tachometer).
The speedometer should work normally.
If MFI system DTC P0500 resets when any of the above connectors is disconnected, replace the ECM or PCM .
The speedometer should work normally.

NOTE: If the ECM or PCM is replaced, the immobilizer-ECU and the ignition key should be replaced together with it Each ECM or PCM has encrypted code for immobilizer-ECU, and the encrypted code is registered in the immobilizer-ECU and the ignition key.

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