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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

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

Abs light on a 06 expedition


Having the vehicle checked for DTC'S - diagnostic trouble code's would be a good first step . ABS light on codes are stored . Suggest you take your vehicle to a qualified repair shop that has the knowledge an testing equipment to diagnose the problem properly .
Anti-Lock Brake System (ABS)
The 4-wheel, 4-channel anti-lock brake system (ABS) consists of the following components:
  • ABS module
  • Front wheel speed sensor
  • Front wheel speed sensor ring (integral to the front wheel bearing)
  • Hydraulic control unit (HCU)
  • Rear wheel speed sensor
  • Rear wheel speed sensor ring (integral to the rear halfshaft)
  • Yellow ABS warning indicator
  • As you can see here , it can set numerous
  • DTC'S Why guess an replace parts that won't fix the problem .
  • Anti-Lock Brake System (ABS) Module Diagnostic Trouble Code (DTC) Index DTC Description Source Action B1342 ECU is Faulted ABS Module NOTE: If other DTCs are present, REPAIR them before installing a new component.
    CLEAR the DTCs. RETRIEVE the DTCs. If DTC B1342 is retrieved, INSTALL a new module. REFER to Anti-Lock Brake System (ABS) Module in this section. REPEAT the self-test. B1483 Brake Pedal Input Circuit Failure ABS Module Go To Pinpoint Test B . B1676 Battery Pack Voltage Out of Range ABS Module Go To Pinpoint Test C . B2477 Module Configuration Failure ABS Module CONFIGURE the ABS module. REFER to Section 418-01 . CLEAR the DTCs. REPEAT the self-test. If DTC B2477 is retrieved again, INSTALL a new ABS module. REFER to Anti-Lock Brake System (ABS) Module . REPEAT the self-test. B2734 Pedal Travel Sensor Supply Error ABS Module Go To Pinpoint Test M . B2736 Pedal Travel Sensor Circuit Fault ABS Module Go To Pinpoint Test M . B2737 Pedal Travel Sensor Jammed Error ABS Module Go To Pinpoint Test M . B2738 Pedal Travel Sensor Velocity Error ABS Module Go To Pinpoint Test M . B2740 Pedal Travel Sensor Spike Error ABS Module Go To Pinpoint Test M . B2741 Sensor Cluster Defective ABS Module FOLLOW the diagnostic tool directions for the calibration procedure. B2900 VIN Mismatch ABS Module VERIFY that the module has the correct as-built data.
    CHECK for correct powertrain control module (PCM) and ABS module configurations using the diagnostic tool. RECONFIGURE the component as necessary. FOLLOW the diagnostic tool directions for the ABS module configuration or REFER to Section 418-01 for the PCM. CLEAR the DTC. REPEAT the self-test. C1095 ABS Hydraulic Pump Motor Circuit Failure ABS Module Go To Pinpoint Test D . C1145 Speed Wheel Sensor RF Input Circuit Failure ABS Module Go To Pinpoint Test E . C1155 Speed Wheel Sensor LF Input Circuit Failure ABS Module Go To Pinpoint Test E . C1165 Speed Wheel Sensor RR Input Circuit Failure ABS Module Go To Pinpoint Test E . C1175 Speed Wheel Sensor LR Input Circuit Failure ABS Module Go To Pinpoint Test E . C1233 Speed Wheel LF Input Signal Missing ABS Module Go To Pinpoint Test F . C1234 Speed Wheel RF Input Signal Missing ABS Module Go To Pinpoint Test F . C1235 Speed Wheel RR Input Signal Missing ABS Module Go To Pinpoint Test F . C1236 Speed Wheel LR Input Signal Missing ABS Module Go To Pinpoint Test F . C1277 Steering Wheel Angle 1 and 2 Circuit Failure ABS Module Go To Pinpoint Test G . C1278 Steering Wheel Angle 1 and 2 Signal Faulted ABS Module Go To Pinpoint Test G . C1279 Yaw Rate Sensor Circuit Failure (Sensor Cluster Fault) ABS Module Go To Pinpoint Test H . C1280 Yaw Rate Sensor Signal Fault (Sensor Cluster Fault) ABS Module Go To Pinpoint Test H . C1281 Lateral Accelerometer Circuit Failure (Sensor Cluster Fault) ABS Module Go To Pinpoint Test H . C1282 Lateral Accelerometer Signal Fault (Sensor Cluster Fault) ABS Module Go To Pinpoint Test H . C1285 Booster Solenoid Circuit Failure ABS Module Go To Pinpoint Test I . C1287 Booster Pedal Force Switch Circuit Failure ABS Module Go To Pinpoint Test J . C1288 Pressure Sensor Main/Primary Input Circuit Failure ABS Module Go To Pinpoint Test K . C1440 (with stability assist) Pressure Sensor Main/Primary Signal Faulted ABS Module Go To Pinpoint Test K . C1516 Roll Rate Sensor Signal Fault (Sensor Cluster Fault) ABS Module Go To Pinpoint Test H . C1517 Roll Rate Sensor Circuit Failure (Sensor Cluster Fault) ABS Module Go To Pinpoint Test H . C1730 Reference Voltage Out of Range (+5V) ABS Module Go To Pinpoint Test L . C1805 Mismatched PCM and/or ABS-TC Module ABS Module CHECK for correct PCM and ABS module configuration using the diagnostic tool. RECONFIGURE the component as necessary. FOLLOW the diagnostic tool directions for the ABS module configuration or REFER to Section 303-01 for the PCM. CLEAR the DTC. REPEAT the self-test. C1963 Stability Control Inhibit Warning ABS Module This DTC is for information only. GO to the Principles of Operation. CLEAR the DTC. REPEAT the self-test. C1991 Module Calibration Failure ABS Module Follow the diagnostic tool directions for the calibration procedure. C1996 Active Yaw and/or Roll Control Disabled ABS Module This DTC can be set if the ABS module system is activated for 15 seconds of continuous operation. CHECK for any major chassis modifications, gross suspension misalignment or other items that can alter the vehicle tracking dynamics. CLEAR the DTC. REPEAT the self-test. C1998 Module Calibration Not Complete ABS Module Go To Pinpoint Test O . C2769 (ABS only) Longitudinal Acceleration Sensor Electrical Failure ABS Module INSTALL a new ABS module. REFER to Anti-Lock Brake System (ABS) Module in this section. CLEAR the DTCs. REPEAT the self-test. C2769 (ABS with stability assist) Longitudinal Acceleration Sensor Electrical Failure (Sensor Cluster Fault) ABS Module Go To Pinpoint Test H . C2770 (ABS only) Longitudinal Acceleration Sensor Plausibility Failure ABS Module INSTALL a new ABS module. REFER to Anti-Lock Brake System (ABS) Module in this section. CLEAR the DTCs. REPEAT the self-test. C2770 (ABS with stability assist) Longitudinal Acceleration Sensor Plausibility Failure (Sensor Cluster Fault) ABS Module Go To Pinpoint Test H . C2777 Sensor Cluster Bus Failure (Sensor Cluster Fault) ABS Module Go To Pinpoint Test H . C2778 Sensor Cluster Power Supply Failure (Sensor Cluster Fault) ABS Module Go To Pinpoint Test H . U1900 CAN Communication Bus Fault-Receive Error Network Fault REFER to Section 418-00 . U1901 CAN Network #2 Communication Bus Fault-Receive Error Network Fault Go To Pinpoint Test H . U2023 Fault Received from External Node Instrument Cluster REFER to Section 418-00 .

Oct 22, 2017 | 2000 Ford Expedition

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.

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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

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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