Speed Sensor HH-VSS1305
HEHUA NO: HH-VSS1305
OEM NO:
12376520
88984527
89048421
89048516
97361874
SC168
5S8115
5S4663
SU1283
SU9581
213347
19302667
917618
VSS1022
APPLICATION:
BUICK RAINIER 2004-2007
CADILLAC ESCALADE 1999-2014
CHEVROLET ASTRO 1999-2005
CHEVROLET AVALANCHE 2007
CHEVROLET AVALANCHE 1500 2002-2006
CHEVROLET AVALANCHE 2500 2002-2005
CHEVROLET BLAZER 1995-2004
CHEVROLET C4500 KODIAK 2003-2005
CHEVROLET C5500 KODIAK 2003-2005
CHEVROLET C6500 KODIAK 2007
CHEVROLET COLORADO 2004-2011
CHEVROLET EXPRESS 1500 2003-2011
CHEVROLET EXPRESS 2500 2003-2007
CHEVROLET EXPRESS 3500 2007
CHEVROLET K1500 PICKUP 1996-1998
CHEVROLET K1500 SUBURBAN 1996-1999
CHEVROLET K2500 PICKUP 1996-2000
CHEVROLET K2500 SUBURBAN 1996-1999
CHEVROLET S10 PICKUP 1994-2003
CHEVROLET SILVERADO 1500 1999-2010
CHEVROLET SILVERADO 2500 1999-2012
CHEVROLET SILVERADO 2500 CLASSIC 2007
CHEVROLET SILVERADO 3500 2001-2012
CHEVROLET SILVERADO 3500 CLASSIC 2007
CHEVROLET SUBURBAN 1500 2000-2008
CHEVROLET SUBURBAN 2500 2000-2011
CHEVROLET TAHOE 1996-2014
CHEVROLET TRAILBLAZER 2002-2009
GMC C4500 TOPKICK 2003-2005
GMC C5500 TOPKICK 2003-2005
GMC C6500 TOPKICK 2007
GMC C7500 TOPKICK 2003
GMC CANYON 2004-2011
GMC ENVOY 2003-2009
GMC JIMMY 1998-2001
GMC K1500 PICKUP 1996-1999
GMC K1500 SUBURBAN 1996-1999
GMC K2500 PICKUP 1996-2000
HOW TRANSMISSION SPEED SENSORS WORK: FUNCTIONAL PRINCIPLE
Transmission speed sensors record the transmission speed. This information is required by the control unit to regulate the shifting pressure when shifting gears and to decide which gear needs to be engaged at which point.
There are two types of transmission range sensor design: Hall generators and inductive sensors.
The rotation of the ring gear changes the magnetic field, which, in turn, changes the voltage in the transmission range sensor. These voltage signals are forwarded to the control unit by the transmission range sensor.
How transmission speed sensors work
Transmission speed sensor
TRANSMISSION SPEED SENSOR FAULTY: SYMPTOMS
A faulty transmission speed sensor can manifest itself as follows:
Failure of the transmission control system, the control unit switches to an emergency program
Engine indicator lamp comes on
CAUSES OF FAULTY TRANSMISSION SPEED SENSORS: CAUSE OF FAILURE
Causes of failure can be:
Internal short circuits
Breaks in wiring
Short circuits in wiring
Mechanical damage to the encoder wheel
Contamination caused by metal abrasion
CHECKING THE TRANSMISSION SPEED SENSOR: TROUBLESHOOTING
The following test steps should be considered during troubleshooting:
Checking the transmission speed sensor: Troubleshooting
Hall generator – example OK
1Check the sensor
Check the sensor for contamination
2Check the encoder wheel
Check the encoder wheel for damage
3Read out fault memory
Read out the fault memory
4Measure the resistance of the inductive sensor using an ohmmeter
Reference value at 80°C: approx. 1,000 ohms.
5Check the supply voltage to the Hall generator using a voltmeter
(circuit diagram for pin assignment required).
Attention:
Do not measure the resistance on the Hall generator as doing so could destroy the sensor.
6Check the continuity of the sensor’s connecting lines between the control unit connector and sensor connector
(circuit diagram for pin assignment required).
Reference value: 0 ohm.
7Check the sensor’s connecting lines for a short circuit to frame
With the control unit connector pulled out, measure against vehicle ground at the sensor connector using the ohmmeter.
Reference value: >30 MOhm.
