Test 15A - Right Front Wheel Speed Sensor Continuity Fault

Test 15A: Repairing -- RF Wheel Speed Sensor Continuity (Part 1 Of 2):

Test 15A: Repairing -- RF Wheel Speed Sensor Continuity (Part 2 Of 2):

Right Rear Wheel Speed Sensor Schematic:

Wheel Speed Sensor Connector (Sensor Side):

Right Front Wheel Speed Sensor Connector:

NOTE: You must perform Test 1A, before proceeding with this test.

RF WHEEL SPEED SENSOR (WSS) STATIC CONTINUITY & DYNAMIC CONTINUITY

When Its Monitored
The static test is conducted after the power up tests are complete and before the vehicle speed is above 5 mph. The dynamic test is conducted after the power up tests are complete and after the vehicle speed is above 5 mph. The sensor continuity status is sampled every 5 ms.

Set Condition
Each wheel is equipped with a metal tone wheel with a number of evenly spaced teeth. A wheel speed sensor generates a small AC signal as each tooth passes the sensor face. The Controller Antilock Brake (CAB) monitors the wheel speed signals every 5 ms The trouble code is stored if sensor continuity is missing for over 35 ms.

Possible Causes:
^ Open or high resistance wheel speed sensor
^ Open wheel speed sensor (+) circuit
^ Open wheel speed sensor (-) circuit
^ Wheel speed sensor (+) circuit shorted to ground
^ Wheel speed sensor (-) circuit shorted to ground
^ Wheel speed sensor (+) circuit shorted to B(+)
^ Wheel speed sensor (-) circuit shorted to B(+)
^ Loose sensor connector terminals
^ Disconnected sensor harness connectors