Transmission Speed Sensor: Testing and Inspection
Primary Pulley Speed Sensor and Secondary Pulley Speed Sensor InspectionReference: Primary Pulley Speed Sensor Removal and Installation
Reference: Secondary Pulley Speed Sensor Removal and Installation
Visual check
^ Check that O-ring is free from damage.
^ Check that end face of sensor and signal pulley tooth are free from any metal particles and damage.
Performance check
1) Remove metal particles on end face of primary pulley speed sensor, if any.
2) Arrange 12 V battery (1) and connect its positive terminal to "Vin" terminal (2) and negative terminal to "Ground" terminal (3) of sensor. Then using ohmmeter, measure resistance between "Vout" terminal (4) of sensor and negative terminal of battery by passing magnetic substance (iron) (5) while keeping approximately 1 mm (0.03 in.) gap with respect to end face of pulley speed sensor. If resistance does not vary as specified below, replace pulley speed sensor.
Primary pulley speed sensor and secondary pulley speed sensor resistance
Resistance varies from less than 220 ohms (ON) to infinity (OFF) or from infinity (OFF) to less than 220 ohms (ON)
Primary pulley speed sensor
Secondary pulley speed sensor
