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Dtc 42 vss circuit 94 toyato corolla - Cars & Trucks

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6ya6ya
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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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SOURCE: How do I change the blinker circuit in the dash of my '94 Corolla

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Hi mate this is an easy wiring diagram to use and you only have one flasher unit for both flasher and Hazard operations. Sorry for taking so long to answer bit buzzy. I have a circuit stored some where in my brain for a two flasher unit also but this one is the most simplest you will get.

Remember to fuse the Ignition wire. Ask the supplier which contacts are negative and positive on the flasher, don't mix them up you will blow up the flasher. If the dash lights aint working run a wire parrallel to those wires from the circuits left and right (two terminal Type). Some flashers have a build in (three terminal Type) dash signal terminal.

Posted on Aug 22, 2009

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SOURCE: what does code 42 VSS

Go to the dealer or to an Auto Zone to see if the codes are in the repair manual for your year of Geo. depending on the year Geo, as to which computer system you have, OBDI, or OBDII.

Posted on Oct 06, 2010

  • 14 Answers

SOURCE: radio, doom light and door buzzer won't work in 1999 toyato corolla

Check the fuse in the fuse box.
The fuse box is under the steering wheel or under the front hood.

Posted on Oct 18, 2012

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04 f150 heritage speedo moves but not over 10 mph and trans won't shift gears. i changed all sensors,traced all wires.


taking your vehicle to a qualified reair shop to have it diagnosed would be a good thing to do . You could not have traced all wires ! Because i'm sure you haven't any idea how this works . An a factory scan tool is a must to diagnose this .Do you know what ford SCP data network is ?
Speedometer
The instrument cluster receives the vehicle speed signal from the powertrain control module (PCM) over the standard corporate protocol (SCP) network and displays it on the speedometer gauge. If the instrument cluster receives no vehicle speed signal after one second, the speedometer defaults to 0.0 km/h (0.0 mph).

Vehicle Speed Sensor
The vehicle speed sensor (VSS) (Figure 52) 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.

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), the transfer case speed sensor (TCSS) or the anti-lock brake system (ABS) control module. If the engine RPM is above the torque converter stall speed (automatic transmission) and the 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) is triggered when this DTC is set.
  • Open in the VSS+/VSS- harness circuit.
  • Open in the TCSS signal or the TCSS signal return harness circuit.
  • Short to GND in the VSS harness circuit.
  • Short to GND in the TCSS harness circuit.
  • Short to PWR in the VSS harness circuit.
  • Short to PWR in the TCSS harness circuit.
  • Damaged drive mechanism for VSS or TCSS.
  • Damaged VSS or TCSS.
  • Damaged wheel speed sensors.
  • Damaged wheel speed sensor harness circuits.
  • Damage in the module(s) connected to the VSC/VSS circuit.
  • Open or short in the vehicle speed circuit VSS signal between the ABS VSS signal output and the VSS signal inputs to the PCM and other modules (Excursion and F-Super Duty).
Monitor the VSS PID while driving vehicle. This DTC is set when the PCM detects a sudden loss of vehicle speed signal over a period of time. If vehicle speed data is lost, check the source of where the vehicle speed input originates from: VSS, TCSS or ABS. Note: On some MSOF applications, VSS and TCSS PID can be monitor. However if no TCSS PID is available and VSS PID is zero, TCSS circuitry frequency must be checked for loss of sensor signal. If another vehicle electronic module has generated the P0500 and the vehicle does not receive its vehicle speed input from one of the above mention sources (VSS, TCSS or ABS). Check the PCM for Output Shaft Speed Sensor (OSS) DTCs. On OSS applications the PCM uses the OSS to calculated the vehicle speed. If no OSS DTCs are found check for correct PCM configuration. Check PCM configuration for correct tire size and axle ratio. 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. P0503 - Vehicle Speed Sensor (VSS) Intermittent Indicates poor or noisy VSS performance. Vehicle speed data is received from either the vehicle speed sensor (VSS), the transfer case speed sensor (TCSS), or the anti-lock brake system (ABS) control module.
  • Noisy VSS/TCSS input signal from the radio frequency interference / electro-magnetic interference (RFI/EMI) external sources, such as ignition components or the charging circuit.
  • Damaged VSS or driven gears.
  • Damaged TCSS.
  • Damaged wiring harness or connectors.
  • Malfunction in the module(s) or circuit connected to the VSS/TCSS circuit.
  • After market add-on.
Monitor the VSS PID while driving the vehicle. Check for intermittent vehicle speed indication. Verify the ignition and charging system are functioning correctly.

Mar 25, 2017 | Cars & Trucks

1 Answer

94 Lexus gs300 sets code 42 (back up speed sensor) changed, cleared, several cycles later back on.


Code 42 Vehicle speed sensor circuit fault. What this means is that the circuit has a problem, that can be the VSS or it can be anywhere in the wiring or even the ECM module. You need a scanner to directly see what is going on with the speed sensor signal output. That means a trip to a dealer or well equipped shop that has the correct scanner and knows Lexus repair.

Feb 17, 2017 | Lexus Cars & Trucks

1 Answer

2000 GMC Jimmy 4×4 The ABS light is on, the speed odometer does not work, and it does shift out of 1st gear, if I manually put it into second gear then it will shift fine, it has a changed VSS


Did you have it check for DTC'S - diagnostic trouble codes ?
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. 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 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)? You really need a Factory scan tool or equivalent to check this . The VSS is an input to the PCM/VCM . engine computer . You can test with a DVOM - digital volt ohm meter , for signal to engine computer .
I know most people don't like hearing this , but I suggest you take it to a ASE certified repair facility .

Feb 21, 2016 | GMC Cars & Trucks

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

2 Answers

I need the list of codes for a 1994 corolla


1.6 GLi COROLLA

DTC NUMBER TROUBLE AREA 12 clip_image001.gifRPM signal 13 clip_image002.gifclip_image002.gifRPM signal 14 IGN signal 16 ECT Signal 21 Oxygen sensor signal 22 Water temperature signal 24 Intake air temperature sensor 25 Air / Fuel ratio lean 31 Vacuum sensor signal 41 Throttle sensor 42 Vehicle speed sensor 43 Starter signal 52 Knock sensor 51 Switch COND

Sep 29, 2014 | 1994 Toyota Corolla

1 Answer

Radio, doom light and door buzzer won't work in 1999 toyato corolla


Check the fuse in the fuse box.
The fuse box is under the steering wheel or under the front hood.

Oct 18, 2012 | Toyota Corolla Cars & Trucks

1 Answer

94 gmc safari 4.3 engine codes 42 and 67


DTC - 42 Ignition bypass circuit error

DTC - 67 AC system low on charge.

Oct 15, 2012 | Cars & Trucks

2 Answers

What does code 42 VSS circuit mean? I took it to schucks and had them hook it up to read the code it gave me code 42 vss circuit what does that mean is wrong/


Go to the dealer or to an Auto Zone to see if the codes are in the repair manual for your year of Geo. depending on the year Geo, as to which computer system you have, OBDI, or OBDII.

Oct 06, 2010 | Geo Prizm Cars & Trucks

2 Answers

I have a 94 4runner and I ran the diagnostic and its a 42 code for the OD/off and engine 42. It doesn't shift into over drive sometimes and it'll blink OD/off every now and then, and the speedometer...


Hi,

Code #42 on the 4Runner denotes a problem with the Vehicle Speed Sensor (VSS) circuit.

It means the ECM did not detect a signal from the VSS, above 2,200rpm....which might explain the speedo issue - Does your speedo play up, only when engine running above 2,200rpm or 2,700rpm?

Areas to check (in this order) are:

- Open (or short) in the VSS circuit
- faulty VSS sensor
- ECM fault within VSS circuit


Cheers,

"If this has helped you, please rate this solution" :-)

Jan 27, 2010 | 1994 Toyota 4Runner

2 Answers

I have a Pontiac hard to start and will not rev up the code that comes up is PO502


DTC P0502: VSS Circuit Low Input

Circuit Description

The OSS provides vehicle speed information to the PCM. The OSS is a permanent magnet generator mounted to the transaxle case. The OSS produces an AC voltage as the speed sensor rotor teeth pass through the sensor's magnetic field. The AC voltage level increases as the speed of the vehicle increases.

The PCM converts the AC voltage into a digital signal. The PCM uses the vehicle speed signal to determine shift timing, TCC apply, TCC release, and gear ratio calculations. When the PCM detects a low output speed and the vehicle has a large engine speed in a drive gear, then DTC P0502 sets.

Conditions For Running DTC

DTC will run under the following conditions:

  • No MAP sensor DTCs P0107 or P0108.
  • No TP sensor DTCs P0121, P0122, or P0123.
  • No ISS DTCs P0716 or P0717.
  • No TFP manual valve position switch DTC P1810.
  • The transaxle is in a drive range.
  • The throttle angle is greater than 12 percent.
  • The input speed is greater than 1500 RPM.
  • The engine torque is greater than 50 ft. lbs. (68 N.m).

Conditions For Setting DTC

DTC will set under the following condition:

  • Output speed is less than 150 RPM for 3 seconds.

Action Taken By PCM

PCM performs the following if DTC is set:

  • Illuminates MIL after 2 consecutive trips with a failure signal.
  • Freezes shift adapts from being updated.
  • Commands maximum line pressure.
  • Calculates output speed from input speed, engine speed and commanded gear.
DTC P0502 will be stored in PCM history.

The Vehicle Speed Sensor (VSS) may also be referred to as the Output Speed Sensor (OSS).

Your hard start and this code maybe unrelated.

Jan 14, 2010 | 2002 Pontiac Grand Am

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