B -- READ VALUE USING TECHSTREAM (REAR SPEED SENSOR)
A -- Continue to next step.
2. CHECK REAR SPEED SENSOR TIP
(a) Remove the rear speed sensor See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Wheel Speed
Sensor/Service and Repair/Rear Speed Sensor/Removal.
(b) Check the speed sensor tip.
OK:
No scratches, oil, or foreign matter on the sensor tip.
NOTICE:
Check the speed sensor signal after cleaning or replacement See: Brakes and Traction Control/Antilock Brakes / Traction
Control Systems/Testing and Inspection/Initial Inspection and Diagnostic Overview/Test Mode Procedure.
NG -- CLEAN OR REPLACE REAR SPEED SENSOR
OK -- Continue to next step.
3. CHECK REAR SPEED SENSOR ROTOR
(a) Remove the rear speed sensor rotor See: Maintenance/Wheels and Tires/Wheel Hub/Service and Repair/Rear Axle Hub/Removal.
(b) Check the speed sensor rotor.
OK:
No scratches, oil, or foreign matter on the rotor.
NOTICE:
Check the speed sensor signal after cleaning or replacement See: Brakes and Traction Control/Antilock Brakes / Traction
Control Systems/Testing and Inspection/Initial Inspection and Diagnostic Overview/Test Mode Procedure.
HINT
If the rear speed sensor rotor needs to be replaced, replace it together with the rear axle hub and bearing assembly.
NG -- CLEAN OR REPLACE REAR SPEED SENSOR ROTOR
OK -- Continue to next step.
4. READ VALUE USING TECHSTREAM (REAR SPEED SENSOR)
(a) Install the rear speed sensor and the rear speed sensor rotor.
(b) Connect the Techstream to the DLC3.
(c) Start the engine.
(d) Select the Data List on the Techstream See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Testing and
Inspection/Scan Tool Testing and Procedures/Data List / Active Test.
ABS/VSC/TRAC
(e) Check that the speed value output from the speed sensor displayed on the Techstream.
HINT
Factors that affect the indicated vehicle speed include tire size, tire inflation, and tire wear. The speed indicated on the
speedometer has an allowable margin of error. This can be tested using a speedometer tester (calibrated chassis dynamometer).
For details about testing and the margin of error, see the reference chart See: Instrument Panel, Gauges and Warning
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