SPEED SENSOR TESTER (SST)

Jaltest SST Speed Sensor Tester (SKU 50004002) — $345

The Jaltest SST (Speed Sensor Tester, part 50004002, $345) is a portable, compact device for verifying the correct operation of active and passive speed sensors on commercial trucks, construction equipment, and agricultural machinery. Per the official Cojali/Jaltest pricelist, it operates in two modes — testing the sensor itself and testing the ECU input it connects to — and uses an LED indicator panel to display results clearly. This tool substantially reduces the time spent on speed sensor fault diagnosis by giving technicians a definitive pass/fail result at the sensor level, without substituting parts or setting up an oscilloscope.

Two Operating Modes

• Sensor test mode: Directly tests the speed sensor's output to confirm whether the sensor itself is generating a correct signal
• ECU test mode: Tests the ECU input to which the sensor is connected, to confirm whether the problem is in the ECU side of the circuit rather than the sensor itself

This two-mode approach eliminates the most common diagnostic dead-end: replacing a sensor that tests fine because the ECU input is the actual fault, or condemning an ECU when the sensor was the problem all along.

Active and Passive Sensor Coverage

• Active speed sensors (Hall effect, magneto-resistive) — standard on modern ABS wheel speed applications and most current transmission speed sensors
• Passive speed sensors (variable reluctance/VR) — common on older ABS systems, driveshafts, and wheel ends

Common Applications

• ABS wheel speed sensor diagnosis on Class 4-8 trucks and trailers
• Transmission input and output shaft speed sensor verification
• Driveshaft and axle speed sensor testing on construction and agricultural equipment
• Pre-parts-ordering confirmation to verify which component is actually faulty
• Post-repair verification that a newly installed sensor is producing the correct output

Why This Tool Saves Time and Money

Without a dedicated speed sensor tester, confirming a wheel speed sensor fault means either substituting a new sensor (time and parts cost) or setting up scope testing (time and equipment). The SST delivers a definitive result in minutes, at the wheel end, without removing anything. The LED display makes the result clear even in low-light shop conditions. For a shop that diagnoses ABS, transmission, or driveline codes regularly, the SST pays for itself quickly in saved diagnostic time.

Key Details

• Part number: 50004002
• MSRP: $345.00
• Sensor types: Active and passive speed sensors
• Operating modes: Sensor test mode and ECU input test mode
• Indication: LED panel display
• Form factor: Portable, compact handheld device
• Part of: Jaltest Tools product line

Who Needs This

• Diesel shops diagnosing ABS, transmission, and driveline speed sensor faults on commercial trucks
• Fleet maintenance operations that need fast, definitive speed sensor verification
• Construction and agricultural equipment shops where speed sensor faults affect transmission and hydraulic control

Why Buy From OEM Diagnostic Tools?

We have been a Jaltest specialist since 2016 and stock the complete Jaltest Tools line alongside Jaltest diagnostic systems. Free shipping on every order, full warranty, and live tech support at 866-217-0063. The SST pairs well with the Jaltest scanner — the software identifies the speed sensor fault code; the SST tells you definitively what is wrong at the sensor level before you order a part.

Call 866-217-0063 for quick answers and help!