Question about 2008 Honda Accord

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VSS Signal I can't how to seek the Vehicle Speed Sensor signal (Pulse signal) at a Accord 2008 from the PCM connector or from the Odo Meter? Please give me advise,Thanks.

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First look at the transaxle to see if the VSS is not there . It has a small plug attached to it. I don't remember where it is on your particular car. But it is either at the transaxle or at the wheel shaft. You have to remove everything from the wheel until you get to the shaft The speed sensor is located against the shaft.

Posted on Feb 06, 2009

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Odometer,speed odometer,and trip not working.replace speed sensor.


Speedometer
The speedometer is an analog gauge that is located in the instrument cluster. The PCM/VCM receives an analog input from the vehicle speed sensor and converts it to a digital signal containing 4,000 pulses per mile (PPM) for the instrument cluster.
The PCM/VCM sends this digital output (4,000 PPM) to the instrument cluster on a designated circuit. These pulses can be measured in Hertz (Hz) using a digital multimeter (DMM) on the AC scale. The PCM/VCM calibration is matched to the final drive and tire size of each vehicle. If the final drive or tire size is changed for any reason, the PCM/VCM must be updated in order to match the new final drive or tire size. If not, the signal will not be accurate for proper speedometer/odometer operation. An incorrect signal can affect the antilock brakes and the cruise control systems.
The speedometer system consists of the instrument cluster, vehicle speed sensor (VSS), PCM/VCM and related wiring. The VSS is a permanent magnet signal generator that sends an analog signal proportional to the propeller shaft speed to the PCM/VCM. The VSS mounts to the transmission tailshaft extension housing on 2-wheel drive (2WD) models and the transfer case output shaft housing on 4-wheel drive (4WD) models.
Repairs to the instrument cluster can only be performed by an authorized instrument cluster service center.

Diagnostic Aids
• An intermittent in the vehicle speed sensor (VSS) circuit may cause an inaccurate speedometer. Refer to Testing for Intermittent Conditions and Poor Connections in Wiring Systems.
• Check for the following DTCs:
- DTC P0502 Vehicle Speed Sensor (VSS) Circuit Low Input and DTC P0503 Vehicle Speed Sensor (VSS) Circuit Intermittent in Automatic Transmission - 4L60-E
- DTC P0500 Vehicle Speed Sensor (VSS) Circuit in Engine Controls - 4.3L
Step
Action
Value(s)
Yes
No
1
Did you perform the Instrument Cluster Diagnostic System Check?
--
Go to Step 3
Go to Diagnostic System Check - Instrument Cluster
2
Important: If the instrument cluster is completely inoperative, refer to Instrument Cluster Inoperative .
Install a scan tool.
Raise the vehicles drive wheels. Refer to Lifting and Jacking the Vehicle in General Information.
Start the engine.
Place the transmission into drive for automatic transmission and third gear for manual transmission.
Compare the displayed vehicle speed on the Instrument Cluster with the monitored speed on the scan tool.
Does the vehicles speedometer and the scan tool both display 0 km/h (0 mph)?
--
YES - Go to Step 4
NO - Go to Step 3
3
Does the vehicles speedometer approximately agree with the scan tool display?
--
Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems
Go to Step 4
4
Turn OFF the ignition.
Disconnect the in line connector C101.
Turn ON the ignition.
Test the vehicle speed output (4K) circuit voltage from the in line connector C101 (female side of connector) to a good ground using the DMM J 39200 . Refer to Circuit Testing in Wiring Systems.
Does the DMM display a voltage greater than the specified value?
9.5V
YES - Go to Step 8
No - Go to Step 5
5
Turn OFF the ignition.
Remove the instrument cluster. Refer to Instrument Cluster Replacement
Test the continuity from the vehicle speed sensor signal (4K) circuit at the instrument cluster electrical connector to the in line connector C101. Refer to Testing for Continuity in Wiring Systems.
Does the DMM display continuity?
--
YES - Go to Step 6
NO - Go to Step 10
6
Test the continuity from the vehicle speed sensor signal (4K) circuit to a good ground. Refer to Testing for Continuity in Wiring Systems.
Does the DMM display continuity?
--
YES - Go to Step 11
NO - Go to Step 7
7
Test the instrument cluster harness connector for a poor connection to the instrument cluster. Refer to Testing for Intermittent Conditions and Poor Connections and Wiring Repairs in Wiring Systems.
Did you find and correct the condition?
--
YES - Go to Step 17
NO - Go to Step 16
8
Turn OFF the ignition.
Disconnect the PCM/VCM harness connector which contains the vehicle speed sensor signal circuit. Refer to Powertrain Control Module Replacement/Programming in Engine Controls - 2.2L or VCM Replacement/Programming in Engine Controls - 4.3L.
Test the continuity of the vehicle speed sensor signal (4K) circuit from the PCM/VCM harness connector to the in line connector C101 using the DMM J 39200 . Refer to Testing for Continuity in Wiring Systems.
Does the DMM display continuity?
--
YES - Go to Step 9
NO - Go to Step 12
have you ever used a diagnostic trouble flow test chart ? Let me know if you make it this far and then I will send the last 9 steps . It's either a wiring problem or instrument cluster or PCM is bad . And if the PCM is replaced it will need progamming . Dealer only .

Nov 16, 2015 | 2000 Chevrolet Blazer

1 Answer

I have a1999 cougar the speed on stop working now the transmission will not shift in less you manual shift your self what could be the problem


The speedometer stopped working ? is this what you meant ? You probably have a bad VSS - vehicle speed sensor . The VSS is an input to the PCM - engine computer , besides being a signal for the speedometer it is used for shift control and other thing's .
Vehicle Speed Sensor The vehicle speed sensor (VSS) (Figure 43) is a variable reluctance or Hall-effect sensor that generates a waveform with a frequency that is proportional to the speed of the vehicle. If the vehicle is moving at a relatively low velocity, the sensor produces a signal with a low frequency. As the vehicle velocity increases, the sensor generates a signal with a higher frequency. The PCM uses the frequency signal generated by the VSS (and other inputs) to control such parameters as fuel injection, ignition control, transmission/transaxle shift scheduling and torque converter clutch scheduling. You could possibly have a DTC stored in the PCM.
P0500 - Vehicle Speed Sensor (VSS) Malfunction Indicates the powertrain control module (PCM) detected an error in the vehicle speed information. Vehicle speed data is received from either the vehicle speed sensor (VSS), transfer case speed sensor (TCSS), anti-lock brake system (ABS) control module, generic electronic module (GEM), or central timer module (CTM). If the engine rpm is above the torque converter stall speed (automatic transmission) and engine load is high, it can be inferred that the vehicle must be moving. If there is insufficient vehicle speed data input, a malfunction is indicated and a DTC is set. On most vehicle applications the malfunction indicator lamp (MIL) will be triggered when this DTC is set.
  • Open in VSS+/VSS- harness circuit.
  • Open in TCSS signal or TCSS signal return harness circuit.
  • Short to GND in VSS harness circuit.
  • Short to GND in TCSS harness circuit.
  • Short to PWR in VSS harness circuit.
  • Short to PWR in TCSS harness circuit.
  • Open or short in the vehicle speed circuit(s) (VSC) between the PCM and appropriate control module.
  • Damaged VSS or TCSS.
  • Damaged wheel speed sensors.
  • Damaged wheel speed sensor harness circuits.
  • Damage in module(s) connected to VSC/VSS circuit.
  • Damage drive mechanism for VSS or TCSS.
Diagnostic Aids: - Monitor VSS PID while driving vehicle. This DTC is set when the PCM detects a sudden loss of VSS signal over a period of time. If vehicle speed data is lost, check source of where vehicle speed signal originates. Note TCSS does not have a PID, circuitry frequency must be checked for sudden loss of sensor signal. P0501 - Vehicle Speed Sensor (VSS) Range/ Performance Indicates the powertrain control module (PCM) detected an error in the vehicle speed information. This DTC is set the same way as P0500, however the malfunction indicator lamp (MIL) is not triggered.
  • Refer to possible causes for P0500.
Refer to diagnostic aids for P0500.

Oct 26, 2015 | Cars & Trucks

1 Answer

O/D light is flashing check engine light came on and speedometer isnt working? what could be wrong?


I would check the V S S or v Vehicle Speed Sensor

Print


OPERATION

See Figure 1


0900c152802600d5.jpg enlarge_icon.gifenlarge_tooltip.gif

Fig. Fig. 1: VSS with connector and driven gear
The Vehicle Speed Sensor (VSS) is a magnetic pick-up sensor that sends a signal to the Powertrain Control Module (PCM) and the speedometer. The sensor measures the rotation of the output shaft on the transaxle and sends an AC voltage signal to the PCM which determines the corresponding vehicle speed.


TESTING

  1. Disconnect the negative battery cable.
  2. Disengage the wiring harness connector from the VSS.
  3. Using a Digital Volt-Ohmmeter (DVOM), measure the resistance (ohmmeter function) between the sensor terminals. If the resistance is 190-250 ohms, the sensor is okay.


REMOVAL & INSTALLATION

  1. Disconnect the negative battery cable.
  2. Raise and support the vehicle.
  3. Remove the catalytic converter Y-pipe.
  4. Unplug the VSS electrical connector.
  5. Remove the VSS protective heat shield.
  6. Remove the retaining bolt from the VSS.
  7. Lift the VSS out of the transaxle.
  8. Remove the driven gear retainer and the drive gear.

To install:
  1. Inspect the O-ring on the sensor and replace if necessary.
  2. Install the driven gear and the retainer.
  3. Place the VSS into the transaxle.
  4. Tighten the retaining bolt to 36-53 inch lbs. (4-6 Nm).
  5. Install the VSS protective heat shield.
  6. Attach the VSS electrical connector.
  7. Install the catalytic converter Y-pipe.
  8. Lower the vehicle.
  9. Connect the negative battery cable.
  10. ehichle speed sensor.

Nov 11, 2012 | 1999 Mercury Sable

1 Answer

Speed sensor wire where is it? how i can repair or change'


The Vehicle Speed Sensor (VSS) is a magnetic pick-up sensor that sends a signal to the Powertrain Control Module (PCM) and the speedometer. The sensor measures the rotation of the output shaft on the transaxle and sends an AC voltage signal to the PCM which determines the corresponding vehicle speed.

The Vehicle Speed Sensor is located mounted on transmission ...


zjlimited_1485.jpg

Fig. VSS with connector and driven gear

Hope helps.

Jun 25, 2011 | 1999 Ford Windstar

2 Answers

1994 GRAND MARQUIS Odometer stopped working, tridometer aswell


If the odometer and tripmeter stop incrementing their mile values, then the VSS or vehicle speed sensor is bad or has become disconnected.

Vehicle Speed Sensor OPERATION The Vehicle Speed Sensor (VSS) is a magnetic pick-up sensor that sends a signal to the Powertrain Control Module (PCM) and the speedometer. The sensor measures the rotation of the transmission output shaft or the ring gear on the differential and sends an AC voltage signal to the PCM which determines the corresponding vehicle speed.
TESTING
  1. Disconnect the negative battery cable.
  2. Disengage the wiring harness connector from the VSS.
  3. Using a Digital Volt-Ohmmeter (DVOM), measure the resistance (ohmmeter function) between the sensor terminals. If the resistance is 190-250 ohms, the sensor is okay.
REMOVAL & INSTALLATION Fig. 1: Detach the connector for the VSS sensor 91194p27.jpg
Fig. 2: Remove the retaining bolt for the VSS sensor and . . . 91194p28.jpg
Fig. 3: . . . remove the VSS sensor from the transmission 91194p29.jpg
Fig. 4: Pry the retainer for the VSS gear off and . . . 91194p30.jpg
Fig. 5: . . . remove the gear from the VSS 91194p31.jpg
  1. Disconnect the negative battery cable.
  2. Raise and safely support the vehicle securely on jackstands.
  3. Detach the connector for the VSS.
  4. Remove the VSS retaining bolt and remove the VSS from the transmission.
  5. Remove the driven gear retainer and the drive gear. To install:
  6. Inspect the O-ring on the sensor and replace if necessary.
  7. Install the driven gear and the retainer.
  8. Place the VSS into the transmission.
  9. Tighten the retaining bolt to 98-115 inch lbs. (11-13 Nm).
  10. Attach the VSS electrical connector.
  11. Lower the vehicle.
  12. Connect the negative battery cable.
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Oct 23, 2010 | 1994 Mercury Grand Marquis

1 Answer

1997 honda accord se need to change vss,where


For 1997 Honda Accord 2.2L MFI 4cyl the Vehicle Speed Sensor - Location is located mounted on transmission.

OPERATION
The Vehicle Speed Sensor (VSS) is a magnetic pick-up sensor that sends a signal to the Powertrain Control Module (PCM) and the speedometer. The sensor measures the rotation of the output shaft on the transaxle and sends an AC voltage signal to the PCM that determines the corresponding vehicle speed.



TESTING
  1. Disconnect the negative battery cable.
  2. Disengage the wiring harness connector from the VSS.
  3. Using a Digital Volt-Ohmmeter (DVOM), measure the resistance (ohmmeter function) between the sensor terminals. If the resistance is 190-250 ohms, the sensor is okay.
REMOVAL & INSTALLATION
  1. Disconnect the negative battery cable.
  2. Disconnect the three terminal connector from the vehicle speed sensor (VSS).
  3. Remove the fasteners that secure the VSS to the transaxle housing assembly.
  4. Remove the VSS.
To install:
  1. Install the VSS.
  2. Install the mounting bolts.
  3. Connect the three terminal connector to the sensor.
  4. Connect the negative battery cable.
Hope helps (remember rated this).

Jul 16, 2010 | 1997 Honda Accord

1 Answer

What cause the O/d light blink


it's usually because you have a bad VSS, Vehicle Speed Sesnor. It sends a signal from the trans to the speedo and engine computer. Usually speedo stops working too.

Vehicle Speed Sensor (VSS) The vehicle speed sensor (VSS) (9E731) is a magnetic pickup that sends a signal to the powertrain control module (PCM) (12A650) . This VSS signal transmits vehicle speed to the powertrain control module .

Vehicle Speed Sensor (VSS)


3b97f16.gif

Nov 10, 2009 | 1998 Ford Windstar

1 Answer

Broken speedometer on 1997 ford explorer


does your cruise control work? If not, check the wiring from the VSS to the speedo cluster. Check VSS connector closely for pin pudhout or corrosion

Sometimes, the VSS siganl is converted by the instrument cluster and sent to the PCM and speedo.

Check engine light on?


Speedometer
The electronic speedometer (17255) receives a speed signal from the vehicle speed sensor (VSS) (9E731). This sensor is also used to sense vehicle speed for the engine management system and to regulate the cruise control when equipped.
----------------------------------------------------------------------------------
Vehicle Speed Sensor The Vehicle Speed Sensor (VSS) (Figure 53) is a variable reluctance or Hall-effect type sensor that generates a waveform with a frequency that is proportional to the speed of the vehicle. If the vehicle is moving at a relatively low velocity, the sensor produces a signal with a low frequency. As the vehicle velocity increases, the sensor generates a signal with a higher frequency. The PCM uses the frequency signal generated by the VSS (and other inputs) to control such parameters as fuel injection, ignition control, transmission/transaxle shift scheduling and torque converter clutch scheduling.

May 12, 2009 | 1997 Ford Escort

1 Answer

Diagram of where the speed sensor of a 1993 ford taurus


i Have 96 Taurus, may help you. May be a little different on 93. good luck. please rate if this is what you need.
-----------------------------------------------------------------------------
3.0L (2V) and 3.0L (4V) Engine
The vehicle speed sensor (VSS) (9E731) is:
  • a Hall-effect pickup that sends a signal to the powertrain control module (PCM) (12A650).
  • able to provide the VSS signal which tells the powertrain control module vehicle speed.
bef24ce.gif
Vehicle Speed Sensor (VSS) (Except SHO) Removal and Installation
  1. Disconnect battery ground cable (14301) and positive battery cable.
  1. Raise and suitably support vehicle on hoist. Refer to Section 00-02 .
  1. Remove three bolts, seven nuts and Y-pipe assembly from vehicle.
  1. Disconnect vehicle speed sensor electrical connector.
  1. Remove vehicle speed sensor retaining bolt and vehicle speed sensor (VSS) (9E731) from transaxle.
  1. To install, reverse Removal procedure. Tighten VSS retaining bolt to 3.4-4.5 Nm (31-39 lb-in). Tighten Y-pipe assembly nuts and bolts to 34-46 Nm (26-34 lb-ft).
97e3531.gif

Apr 04, 2009 | 1993 Ford Taurus

1 Answer

Speed sensor on 2000 ford f150 4x4 triton 4.6


if this helps, please rate as fixya. thanks.

Vehicle Speed Sensor The vehicle speed sensor (VSS) (Figure 43) is a variable reluctance or Hall-effect sensor that generates a waveform with a frequency that is proportional to the speed of the vehicle. If the vehicle is moving at a relatively low velocity, the sensor produces a signal with a low frequency. As the vehicle velocity increases, the sensor generates a signal with a higher frequency. The PCM uses the frequency signal generated by the VSS (and other inputs) to control such parameters as fuel injection, ignition control, transmission/transaxle shift scheduling and torque converter clutch scheduling.


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For the 4R70W trans vehicles

Vehicle Speed Sensor (VSS)

The vehicle speed sensor (VSS) is model dependent. Possible sources of vehicle speed input are, anti-lock brake sensor (ABS), a gear-driven vehicle speed sensor (VSS), or the transmission output shaft speed (OSS) sensor. On 4x4 applications with a manual shift transfer case, the transfer case speed sensor is the source of vehicle speed. The VSS signal is either an AC signal whose frequency changes with vehicle speed, or an SCP data message depending on the source. Some vehicles have both. The vehicle speed signal is an input to various vehicle sub-systems such as the powertrain control module (PCM), instrument cluster (speedometer and odometer), speed control systems, etc. The vehicle speed source must be operational to enter output state control mode for diagnostics.

If you have a 4R100 trans, it is different.

Mar 12, 2009 | 2000 Ford F150 Flareside SuperCab

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