Where is the vehicle speed sensor - 1995 Toyota Camry

In a Nissan Altima, code P1574 typically indicates an issue with the ASCD (Automatic Speed Control Device) speed sensor A. This sensor is responsible for detecting the vehicle's speed and providing the necessary information for the ASCD system to function properly.
When this code appears, it usually means that there is a problem with the speed sensor itself, the wiring connected to it, or possibly a malfunction in the ASCD control unit. It can lead to issues such as the cruise control not working, the vehicle not maintaining a set speed, or other related problems.
To diagnose and fix this issue, you may need to perform the following steps:
1. Check the wiring and connections: Inspect the wiring harness connected to the ASCD speed sensor A for any signs of damage, corrosion, or loose connections. Make sure all connections are secure and free of debris.
2. Test the sensor: The ASCD speed sensor A itself may be faulty and need to be tested. You can use a multimeter to check the sensor's resistance and compare it to the manufacturer's specifications.
3. Check the ASCD control unit: If the sensor and wiring appear to be in good condition, the issue may lie with the ASCD control unit. Testing and potentially replacing this unit might be necessary.
4. Clear the trouble code: Once you've identified and resolved the underlying issue, you can clear the trouble code from the vehicle's system using an OBD-II scanner. This will reset the system and allow you to see if the problem persists.
If you are not comfortable performing these steps yourself, it's recommended to consult with a qualified mechanic or dealership with experience in diagnosing and repairing ASCD-related issues in Nissan vehicles. They can provide a more accurate diagnosis and solution to ensure your Nissan Altima's ASCD system operates correctly.

P0501 - Vehicle Speed Sensor (G22): Implausible Signal Possible Causes

• Wiring/Connectors from/to Vehicle Speed Sensor (G22) faulty
• Wiring/Connectors from Transmission Control Module (J217) to Engine Control Module faulty
• Vehicle Speed Sensor (G22) faulty
• Malfunctioning Left Front wheel speed sensor (in vehicles that don't use a physical G22 sensor)

Possible Solutions

• Check Wiring/Connectors from/to Vehicle Speed Sensor (G22)
• Check Wiring/Connectors from Transmission Control Module (J217) to Engine Control Module
• Check Vehicle Speed Sensor (G22)
• Check ABS Brakes for faults and diagnose malfunctioning Left Front wheel speed sensor if applicable

Category:

• Fault Codes

Vehicle Speed Sensor Replacement
Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information. Remove the right front tire and wheel. Refer to Tire and Wheel Removal and Installation in Tires and Wheels. Remove the right engine splash shield. Refer to Engine Splash Shield Replacement in Body Front End.
Remove the vehicle speed sensor wiring harness connector.
Remove the vehicle speed sensor bolt (9). Remove the vehicle speed sensor (10) from the extension case.
Remove the O-ring (11) from the vehicle speed sensor (10).
Vehicle Speed Sensor (VSS)
Lower right side of the engine compartment, on the transaxle

There are actually two Vehicle Speed Sensors (VSS). I'm going to assume you have a 2.5 liter engine and an automatic transmission.

The Vehicle Speed Sensor 1 (output shaft rotation sensor) is mounted to the extension case (from the outside of the case). The sensor outputs a pulse signal which is transmitted to the TCM where it is converted to vehicle speed.

The transfer clutch drum is connected directly to the rear wheel driving propeller shaft. Vehicle speed sensor 1 on the AWD model detects rear-wheel speed.

Vehicle Speed Sensor 2 provides vehicle road speed information to the ECM. The ECM uses this data to properly determine ignition and fuel delivery curves. The sensor consists of a reed switch and magnetic rotor turned by the speedometer cable.

One rotation of the magnetic rotor opens and closes the reed switch four times, producing a digital signal which is converted to vehicle speed by the ECM. The sensor operates whenever the vehicle is moving with ignition ON. As the transmission rotates, the speed sensor sends a pulsed on/off signal to the ECM.

The speedometer uses VSS 2 for it's signal.

Hope this helps (remember to rate this answer).

P0500 Vehicle Speed Sensor "A"
P0501 Vehicle Speed Sensor "A" Range/Performance
P0502 Vehicle Speed Sensor "A" Circuit Low Input
P0503 Vehicle Speed Sensor "A" Intermittent/Erratic/High
Vehicle Speed Sensor Removal & Installation Automatic Transmission To Remove:

1. Remove or disconnect the following:
   • Output shaft speed (OSS) sensor electrical connector.
   • Bolt and OSS sensor

To Install:

1. Apply a light coat of petroleum jelly to the O-ring before installation
2. Install or connect the following:
   • OSS sensor torque bolt to 89 in-lbs (10 Nm)
   • OSS sensor electrical connector

Manual Transmission To Remove:

1. Remove or disconnect the following:
   • Vehicle Speed Sensor (VSS) electrical connector.
   • Retaining pin.
   • VSS.

To Install:

1. Install or connect the following:
• VSS.
• Retaining pin.
• VSS connector.

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The VSS is on the transmission near the output shaft. It will not be a wheel speed sensor on the hub.

Good luck on this repair, tommy.

Yes, I would start at the speed sensor on the transmission called the VSS (Vehicle Speed Sensor).

Also, are the tires the right size for the vehicle as indicated by the placard on the inside of the door?

The following is the example for some GMC Envoys (I had to guess on the engine size):

Vehicle Speed Sensor Removal & Installation To Remove:

1. Disconnect the vehicle speed sensor connector. Vehicle speed sensor (A), Retaining bolt (B), O-ring (C)
   
   
2. Detach the vehicle speed sensor from the transfer case.
3. Remove the o-ring from the vehicle speed sensor.

To Install:

1. Apply transmission fluid to the o-ring.
2. Install the o-ring onto the vehicle speed sensor.
3. Attach the vehicle speed sensor to the transfer case. Torque the bolt to 97 in-lb (11 Nm).
4. Connect the vehicle speed sensor connector.

Hyundai VSS locations:
On 1999-2003 vehicles, the vehicle speed sensor is built into the speedometer. On 2004-2005 vehicles, the vehicle speed sensor is attached to the output shaft of the transaxle.

On 1996-2003 vehicles, the vehicle speed sensor is built into the speedometer. On 2004-2005 vehicles, the vehicle speed sensor is attached to the output shaft of the transaxle.

On 1999-2003 vehicles, the vehicle speed sensor is built into the speedometer. On 2004-2005 vehicles, the vehicle speed sensor is attached to the output shaft of the transaxle.

Hope helps (remember rated this).

The vehicle speed sensor is located below the air cleaner assembly, it is held in with one bolt (I believe 10mm):

1. Remove the bolt and vehicle speed sensor assembly.
2. Remove the clip and speedometer driven gear from vehicle speed sensor.
3. Remove the O-ring from vehicle speed sensor
4. Coat a new O-ring with ATF and install it to the vehicle speed sensor.
5. Install the speedometer driven gear to the vehicle speed sensor and clip.
6. Install the vehicle speed sensor assembly and torque the bolts. Torque: 16 Nm (160 kgf-cm, 12 ft. lbs.)

Your vehicle does not have a traditional speedometer cable. Instead it uses a VSS (Vehicle Speed Sensor) to read speed of the vehicle below is a short test to help you determine if it is the VSS that has failed.

SPEEDOMETER VEHICLE SPEED SENSOR TEST

1. Press and release trip odometer button until function number 6 appears in display window.

2. Turn a front wheel and observe display (pulses are added to number in display. Check impulse signal for speedometer vehicle speed sensor. If 7 pulses are generated per wheel revolution, vehicle speed sensor is okay.

3. If specified number of pulses are not generated, check for open in wiring harness between speed sensor and instrument cluster. Repair wiring harness if necessary. If wiring harness is okay, replace speedometer vehicle speed sensor.

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.



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.