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What sensor did you change . VSS - vehicle speed sensor or output speed sensor .
The ideal what to find the problem would be to hook up a factory scan tool to see the VSS is put out a signal to the PCM/ECM , then see if the PCM /ECM is sending info to the instrument cluster ,. And knowing how these this work couldn't hurt either .
The IPC displays the vehicle speed based on the information from the PCM. The PCM converts the data from the vehicle speed sensor to a 4000 pulses/mile signal. The IPC uses the vehicle speed signal circuit from the PCM in order to calculate the vehicle speed. The speedometer defaults to 0 km/h (0 mph) if a malfunction in the vehicle speed signal circuit exists.
Have the vehicle checked for DTC"S - diagnostic trouble codes . No all code's turn on the check engine light .
The PCM creates the vehicle speed output signal by pulsing the circuit to ground. The PCM pulses the circuit at the same rate as the vehicle speed signal input. The PCM monitors the voltage on the vehicle speed signal circuit. If the PCM determines the voltage is out of the normal operating range, a DTC sets.
Install a scan tool.
Raise the vehicle's drive wheels. Refer to Lifting and Jacking the Vehicle in General Information.
Start the engine.
Place the transmission into drive for an automatic transmission or third gear for a manual transmission.
With the scan tool, observe the Vehicle Speed Sensor parameter in the PCM data list.
Does the Vehicle Speed Sensor parameter match the speedometer display?
This is something best taken to a qualified repair shop . This could be a wiring issue , or the PCM or the instrument cluster .
So we can rule out the speed sensor and its circuit to the PCM.
I just checked through another area of my database and it seems the speed sensor is systated as on the side of transaxle, near firewall, maybe you can dheck that out to confirm, just out of curiosity and for future reference and some portion of testing requires unplugging the conections.
Anyway I will provide a complete diagnostic pocedures for you to check through and hope an answer is found.
PS. After going through the diagnostic procedure, I believe your radio is the cause of the problem. Refer to # 10
SPEEDOMETER DOES NOT WORK
1. Connect scan tool to data link connector, check for Diagnostic Trouble Code (DTC). If DTC P0500 (Vehicle Speed Sensor) is set, diagnose this DTC first. Go to step 6 . If DTC P0500 is not set, go to next step.
2. On Eclipse, if trip odometer is not working normally, go to next step. If trip odometer is working normally go to step 5. On Galant, if tachometer is not working normally, go to next step. If tachometer is working normally, go to step 5
3. Disconnect instrument cluster connector. Turn ignition switch to ON position. Connect DVOM between ground and instrument cluster connector terminal No. 52 (Black/White wire) on Eclipse or terminal No.29 (Black/White wire) on Galant. If battery voltage is present, go to next step. If battery voltage is not present, check harness connectors and harness wiring between instrument cluster and ignition switch for damage. Repair as necessary.
4. Using a DVOM, check resistance between ground and instrument cluster harness connector terminal No. 34 (Black wire) on Eclipse or terminal No. 30 (Black wire) on Galant. If resistance is less than 2 ohms, replace instrument cluster printed circuit board or speedometer and tachometer. If resistance is greater than 2 ohms, check instrument cluster connector and harness wiring. Repair as necessary. If connector and wiring are okay, go to next step.
5. Disconnect vehicle speed sensor connector and instrument cluster connector. Turn ignition switch to ON position. Connect DVOM between ground and harness side of instrument cluster connector terminal No. 29 (White/Blue wire) on Eclipse or terminal No. 16 (Yellow/Black wire) on Galant. Voltage should be 5 volts. If voltage is okay, repair or replace instrument cluster printed circuit board or speedometer and tachometer. If voltage is not 5 volts, check instrument cluster connector and harness wiring. Repair as necessary. If connector and wiring are okay, go to next step.
6. Disconnect vehicle speed sensor harness connector and connect DVOM to harness side. Check vehicle speed sensor power supply voltage between terminal No. 1 (Black/White wire) on Eclipse or (Black/Blue wire) on Galant and ground. Battery voltage should be present. If voltage is okay, go to next step. If voltage is not present, check vehicle speed sensor harness connector and wiring. Repair as necessary.
7. Using DVOM, check resistance between ground and vehicle speed sensor harness connector terminal No. 2 (Black wire). Resistance should be less than 2 ohms. If resistance is greater than 2 ohms, check instrument cluster connector and harness wiring. Repair as necessary. If connector and wiring are okay, go to next step.
8. Disconnect vehicle speed sensor harness connector. Connect DVOM between ground and harness side terminal No. 3 (White/Blue wire) on Eclipse or (Yellow/Black wire) on Galant. If 9 volts are not present, check vehicle speed sensor harness connector and wiring. Repair as necessary. If 9 volts are present, go to next step.
9. Check harness wiring between vehicle speed sensor connector to radio and tape player connector, auto-cruise control ECU ECM (M/T) or PCM (A/T) connector and instrument cluster connector. If connectors or wiring are damaged, repair as necessary. If connectors and wiring are okay, go to next step.
CAUTION: To prevent damage to scan tool, always turn ignition off before connecting or disconnecting scan tool.
NOTE: If ECM (M/T) or PCM (A/T) is replaced, immobilizer-ECU should also be replaced. Each ECM (M/T) or PCM (A/T) has an encrypted code for immobilizer-ECU, and is registered in immobilizer-ECU.
10. Connect scan tool to data link connector. Turn ignition switch to ON position. Read DTC. Disconnect radio and tape player connector. If DTC P0500 does not reset, replace radio and tape player. If speedometer does not work, disconnect auto-cruise control ECU connector. If DTC P0500 does not reset, replace auto-cruise control ECU. If speedometer does not work, disconnect instrument cluster harness connector. If DTC P0500 does not reset, replace instrument cluster. If DTC P0500 resets when any connector is disconnected, replace ECM (M/T) or PCM (A/T).
The speed sensor that is under the trans. mount on the driver side sends the shift points to the computer telling it at what point to shift. The sensor that actually controls your speedometer is in the back near the firewall. It is tall and should have a silver heat shield over it. However, the problem that you have described sounds more like an electrical short or a wire grounding out somewhere. I would check for wires getting pinched under the steering column in the dash since things quit working when you are turning. Also check the wiring behind the instrument cluster. Elecrical problems can sometimes be complex and hard to find but with some due diligence they can be solved. Hope this helps.
Hi, it sounds to me like the connector to the switch is loose or the wires are broken in the joint at the door hinge. When you open the door, it's either tugging less on the switch or it's letting a broken wire make contact. First pull up the switch and see if the connector is loose. While you're there, you can check for power to the switch connector. The power comes to the switch on a light blue wire with a black stripe. If there is no power there, trace the wire back thru the hinge boot to find a break or maybe just run a new wire. Let me know if you have questions, and thanks for using FixYa.
The odometer quits working when the speedometer quits working. The most common cause for the speedometer to quit working is the speed sensor in the transmission. You said you replaced it, there is also a transmission speed sensor on your truck that may need to be replaced. I understand your frustration, but there is nothing else that would cause the speedometer to quit except the cable behind the gauges being clogged.
WELL DIDNT TELL ME THE YEAR OF TRUCK CHECK TRANSMISION FUSE FIRST.IF ALL IS GOOD LOW TRANSMISSION FLUID OR STOPPED UP TRANSMISSION FILTER AND OLD FLUID CAUSE SHIFTING PROBLEMS.FAULTY VSS SENSOR WILL CAUSES TRANSMISSION SHIFT PROBLEMS.IF YOU HAVE NEWER MODEL TRUCK FAULTY TCM OR TRANSMISSION CONTROL MODULE FAULTY.
you got to check the manual from the manufacturer and then check the blue wire is usually the feed back wire to the ecu and the black is the power wire to batt...you have to ask the peeps you got the sensor from for what the grey and black do... ? but I know in japanease cars the black is the power.....
check the car wires by using voltmeter on volts put one lead on your battery + and put one on each wire end from the engine one will change as you rev thats the feed back wire to the ecu... just do black power and grey to where the blue was..fixed..!!