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Circuit test for wheel speed sensor buick rendezvbous

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Posted on Jan 02, 2017

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SOURCE: how to test front speed

these sensors put out a small amount of AC voltage. If you ohm them they should give some resistance. A lab scope or a graphing meter will show a pattern and sometimes its just not high enough in amplitude. What is your ABS trouble code? the harness for the speed sesnor goes bad, and is very common where the wires flex when you are turning. if the harness is bad, you should be able to get a new one from the Dealer or a AC DELCO parts house.

Posted on Sep 12, 2011

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DTC code C1226


Definition of Diagnostic Trouble Code C1226 Buick: Right Front Excessive Wheel Speed Variation Cadillac: Right Front Excessive Wheel Speed Variation Chevrolet: Right Front Excessive Wheel Speed Variation Chrysler: Brake Pedal Travel Sensor Circuit Dodge: Brake Pedal Travel Sensor Circuit Ford: Brake warning indicator output short circuit to ground. GMC: Right Front Excessive Wheel Speed Variation Jeep: Brake Pedal Travel Sensor Circuit Lincoln: Brake warning indicator output short circuit to ground. Mazda: Brake warning indicator output short circuit to ground. Mercury: Brake warning indicator output short circuit to ground. Mitsubishi: FR inlet valve Oldsmobile: Right Front Excessive Wheel Speed Variation Pontiac: Right Front Excessive Wheel Speed Variation Saturn: Right Front Excessive Wheel Speed Variation Toyota: Open or short in hydraulic brake booster solenoid circuit (SA2/SPC/SPFR/SPFL/SMV1/SMV2/SBAL)

Locksmith East Aurora Ny 24 Hour Locksmith 716 249 2944 in East Aurora Ny

Jul 31, 2016 | Cars & Trucks

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ABS and T/C lights on dash. Resistance measurement good on left and right wheel speed sensors. Haven't been able to find an ABS and T/C wiring diagram to see what is common to both. circuits.


ABS and traction control both use the wheel speed sensors and are controlled through the same module . What resistance readings did you get ? Did you test AC voltage with the wheel spinning ?

Feb 10, 2016 | 2006 Buick LaCrosse CX

1 Answer

Where is the vehicle speed sensor located in a 1999 Buick century


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

Sep 05, 2015 | Buick Cars & Trucks

1 Answer

I have codes C0040 and C0245 which relate to the


it is likely the sensor but I would test it before you replace it. you will need to check the resistance on the wires coming off the sensor you will also need to know what the right resistance is.

Sep 18, 2013 | 2005 Buick LaCrosse

1 Answer

2001 buick park avenue ABS wheel speed sensor replacement


what you wont to replace ABS or speed sensor.

Mar 01, 2013 | 2001 Buick Park Avenue

1 Answer

2006 ford crown vic abs code b1596


B1596 ABS Module Service Continuous Codes NOTE: If other DTCs are present, REPAIR them before installing a new component.
TURN the ignition switch to the OFF position and wait at least 30 seconds. Turn the ignition switch to the ON position. REPEAT the ABS self-test. If any DTCs are retrieved, REFER to the Anti-Lock Brake System (ABS) Module Diagnostic Code (DTC) Index. If no DTCs are retrieved, CARRY OUT a drive test above 15 km/h (9 mph), then REFER to the symptom chart.
Anti-Lock Brake System (ABS) Module Diagnostic Trouble Code (DTC) Index DTCs DTC Caused By Description Action B1342 ABS Module ECU is Defective INSTALL a new ABS module. REFER to Anti-Lock Brake System (ABS) Module in this section. B1484 ABS Module Brake Pedal Input Open Circuit Go To Pinpoint Test D . B1596 ABS Module Service Continuous Codes NOTE: If other DTCs are present, REPAIR them before installing a new component.
TURN the ignition switch to the OFF position and wait at least 30 seconds. Turn the ignition switch to the ON position. REPEAT the ABS self-test. If any DTCs are retrieved, REFER to the Anti-Lock Brake System (ABS) Module Diagnostic Code (DTC) Index. If no DTCs are retrieved, CARRY OUT a drive test above 15 km/h (9 mph), then REFER to the symptom chart. B1676 ABS Module Battery Voltage Out of Range Go To Pinpoint Test E . C1145 ABS Module Speed Wheel Sensor RF Input Circuit Failure Go To Pinpoint Test B . C1155 ABS Module Speed Wheel Sensor LF Input Circuit Failure Go To Pinpoint Test B . C1165 ABS Module Speed Wheel Sensor RR Input Circuit Failure Go To Pinpoint Test B . C1175 ABS Module Speed Wheel Sensor LR Input Circuit Failure Go To Pinpoint Test B . C1222 ABS Module Speed Wheel Mismatch Make sure the tires are the same size and correctly inflated. INSPECT the wheel speed sensor rings. CLEAR the DTC. TEST drive the vehicle. REPEAT the self-test. C1266 ABS Module ABS Valve Power Relay Circuit Failure Go To Pinpoint Test K . C1296 ABS Module Wheel Speed LF Signal Fault Go To Pinpoint Test C . C1297 ABS Module Wheel Speed RF Signal Fault Go To Pinpoint Test C . C1298 ABS Module Wheel Speed RR Signal Fault Go To Pinpoint Test C . C1299 ABS Module Wheel Speed LR Signal Fault Go To Pinpoint Test C . C1300 ABS Module ABS Hydraulic Pump Motor Circuit Failure Go To Pinpoint Test A . C1805 ABS Module Mismatched PCM and ABS Modules Do Not Match CHECK the part numbers. INSTALL the correct module. C2775 ABS Module TC ON/OFF Switch Stuck Failure Go To Pinpoint Test H . U0073 CAN Bus Control Module Communication Bus Off REFER to Section 418-00 . U1900 CAN Bus CAN communication Bus Fault - Receive error REFER to Section 418-00 . U2023 CAN Bus Fault received from External Node REFER to Section 418-00 .

Jan 14, 2013 | 2006 Ford Crown Victoria

1 Answer

2000 Cadillac deville brake abs trac control lights on. Code c1214 resets every time car is started after clearing.


follow the instruction and fix it. God bless you
When a wheel speed sensor (WSS) fails or there's a problem in the sensor's wiring circuit, it usually disables the ABS system and causes the ABS warning light to come on. Loss of a wheel speed signal is a serious problem because the ABS module needs accurate input from all its sensors to determine whether or not a wheel is locking up. Without this vital information, the ABS system can't do its thing.
Wheel speed sensors produce an alternating current (AC) output voltage that varies in frequency and amplitude with wheel speed. The faster the wheel turns, the greater the frequency and amplitude of the sensor's output signal. The strength of the signal can be affected by resistance in the sensor, resistance in the wiring and connectors, metallic debris on the end of the sensor, and the air gap between the sensor and tone ring mounted on the axle, hub, brake rotor, drum or CV joint.
A narrow air gap is usually necessary to induce a strong signal in the sensor's magnetic windings. Air gaps typically range from .016 in. to as much as .050 in. (0.40 to 1.3 mm) depending on the application. If the ABS warning light is on and you find a code for a wheel speed sensor (and the sensor is adjustable), the problem may be nothing more than too wide an air gap. Use a brass or nonmagnetic feeler gauge set the gap to the factory recommended specs.
Variations in the air gap can also cause fluctuations in the sensor's output signal. These may be caused by bad wheel bearings or missing, broken or chipped teeth on a tone ring. Even minor damage to the tone ring that's nearly impossible to see can sometimes cause a problem. One equipment supplier makes a test bench with a magnetic pickup and oscilloscope to check tone rings on remanufactured FWD axle shafts. The setup simulates the signal produced in a wheel speed sensor. Tests have shown that a variation in height of only about .010 inch on a single tooth can cause a noticeable fluctuation in the sensor's output signal!
WHEEL SPEED SENSOR CHECKS
One way to check a suspicious wheel speed sensor is to measure its output voltage. One way to do this is to plug a breakout box into the ABS module's wiring harness and attach the test leads from a digital volt ohm meter (DVOM) to the appropriate pins for the WSS circuit.
A good wheel speed sensor will generally produce an alternating current (AC) voltage reading of 50 to 700 MV when the wheel is spun by hand at about one revolution per second. Refer to a shop manual for the sensor's exact voltage specifications.
A low voltage reading or no reading calls for a direct measurement of the resistance in the WSS circuit (with the key off). This should be done through the breakout box to check the entire circuit. A good wheel speed sensor and circuit will typically have a resistance of 800 to 1400 ohms (specs vary, so refer to a manual for the exact numbers).
If the sensor circuit has too much resistance, reads open or is shorted (little or no resistance), measure the resistance across the sensor itself. If the sensor itself reads within specs, the problem is in the wiring or connectors. If not, then you have identified a bad sensor that needs to be replaced.

10_18_2012_4_52_53_am.jpg10_18_2012_4_53_25_am.jpg

Oct 18, 2012 | Cadillac DeVille Cars & Trucks

1 Answer

What means this code c0050-60 on srx 2011


Hi there:
From the book:

Conditions for setting the DTC

C0035, C0040, C0045, or C0050
One of the following conditions exists for 0.02 seconds:

- A short to voltage - the wheel speed sensor signal circuit and wheel speed sensor return circuit voltages are both greater than 4.25 volts.

- A short to ground - the wheel speed sensor signal circuit and wheel speed sensor return circuit voltages are both less than 0.75 volts.

- An open - the wheel speed sensor signal circuit voltage is greater than 4.25 volts and wheel speed sensor return circuit voltage is less than 0.75 volts.


Conditions for Clearing the DTC

- The condition for the DTC is no longer present and the DTC is cleared with a scan tool.

- The EBCM automatically clears the history DTC when a current DTC is not detected in 100 consecutive drive cycles.


Diagnostic Aids
C0035, C0040, C0045, or C0050

If the customer comments that the ABS indicator is ON only during moist environmental conditions (rain, snow, vehicle wash, etc.), inspect the wheel speed sensor wiring for signs of water intrusion. If the DTC is not current, clear all DTCs and simulate the effects of water intrusion by using the following procedure:

1) Spray the suspected area with a 5 percent saltwater solution. To create a 5 percent saltwater solution, add 2 teaspoons (9.9 ml) of salt to 354 ml (12 oz) of water.
2) Test drive the vehicle over various road surfaces (bumps, turns, etc.) above 40 km/h (25 mph) for at least 30 seconds.
3) If the DTC returns, replace the suspected wheel speed sensor or repair the wheel speed sensor wiring.
4) Rinse the area thoroughly when completed.





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Jun 20, 2012 | 2011 Cadillac SRX

1 Answer

I need some codes for a 98 Dodge Durango po300/po302/po304/p1391/po307


P0300 - Random Misfire code
P0302 - P0304 and P0307 - Misfire code on cylinder #2, #4 and #7
This description and procedure work in all cylinders failed; A P0302, P0304 and P0307 code means that the the car's computer has detected that one of the engine's cylinders is not firing properly. In this case it's cylinder #2, #4 and #7.


Symptoms may include:
the engine may be harder to start
the engine may stumble / stumble, and/or hesitate
other symptoms may also be present


A code P0302 may mean that one or more of the following has happened:
Faulty spark plug or wire
Faulty coil (pack)
Faulty oxygen sensor(s)
Faulty fuel injector
Burned exhaust valve
Faulty catalytic converter(s)
Running out of fuel
Poor compression
Defective computer


Possible Solutions:
If there are no symptoms, the simplest thing to do is to reset the code and see if it comes back.

If there are symptoms such as the engine is stumbling or hesitating, check all wiring and connectors that lead to the cylinders (i.e. spark plugs). Depending on how long the ignition components have been in the car, it may be a good idea to replace them as part of your regular maintenance schedule. I would suggest spark plugs, spark plug wires, distributor cap, and rotor (if applicable). Otherwise, check the coils (a.k.a. coil packs). In some cases, the catalytic converter has gone bad. If you smell rotten eggs in the exhaust, your cat converter needs to be replaced. I've also heard in other cases the problems were faulty fuel injectors.



P1391 - Rough Road Sensor Performance

Circuit/System Description:
The engine control module (ECM) identifies engine misfire by detecting variations in crankshaft speed. Crankshaft speed variations can also occur when a vehicle is operating over a rough road. The ECM receives a rough road signal by a rough road sensor or an electronic brake control module (EBCM), if equipped with the antilock brake system (ABS). The ABS can detect if the vehicle is on the rough surface based on wheel acceleration/deceleration data supplied by each wheel speed sensor. This information is sent to the ECM by the EBCM through the rough road signal circuit. For vehicles without ABS, the ECM receives a rough road signal from a wheel speed sensor located at the front left wheel. The ECM can determine if the vehicle is on a rough road surface based on the signal from the wheel speed sensor.


Conditions for Running the DTC:
* The vehicle speed is between 5-100 km/h (3.1-62.1 mph).
* The DTC runs continuously when the above conditions are met.


Conditions for Setting the DTC:
The ECM detects that the change in rough road wheel speed sensor signal is less than 2 km/h (1.2 mph) while the change in vehicle speed is greater than 5 km/h (3.1 mph).


Circuit/System Testing
- Ignition OFF, disconnect the harness connector at the B171 Rough Road Sensor.
- Ignition ON, verify that a test lamp illuminates between the ignition circuit terminal 2 and ground.
* If the test lamp does not illuminate, test the ignition circuit for a short to ground or an open/high resistance. If the circuit tests normal and the ignition circuit fuse is open, test all components connected to the ignition circuit and replace as necessary.
- Ignition ON, test for 0.2-0.8 V between the signal circuit terminal 1 and ground.
* If less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the K20 ECM.
* If greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the K20 ECM.
- If all circuits test normal, replace the B171 Rough Road Sensor.


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May 04, 2012 | 2004 Dodge Ram 1500

1 Answer

2004 buick rendevous-anti lock brake pump making squeeling noise like a radiator thats over heating while in gear and driving at various speed intermittent


may have a bad abs wheel speed sensor, easy way to test sensors is one at a time unplug sensor and check with ohm meter the sensor thats way off in readings is the bad one, start here first, good luck,

Oct 23, 2009 | Buick Rendezvous Cars & Trucks

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