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Test B - Hall Effect Type or Optical Type Sensor
Sensor may be tested on or off vehicle.
Warning: Observe all safety precautions (see page ii) if testing sensor on
vehicle.
1) Verify ignition key is OFF.
2) Check Tester battery
Refer to page 1-4. Set RANGE switch to POWER
OFF when done.
3) Disconnect wiring harness from sensor - Inspect
for damage.
Some vehicles use a metal snap ring to secure
wiring harness to sensor. Remove this snap ring
before disconnecting wiring harness.
4) Off-Car testing only: Remove sensor.
5) Connect test leads.
Refer to vehicle service manual for sensor pin
identification. Some connectors handle more than
one sensor. Test all sensors.
• RED to sensor power pin.
• YELLOW to sensor signal pin.
• BLACK to sensor ground pin.
6) Verify test clips make good contact and do not
touch each other.
Make sure unused clips are not touching anything.
7) Set RANGE switch to LOW.
8) Set FUNCTION switch to FREQUENCY.
9) Operate sensor - Watch PULSE light for
results.
(Note: Ignore any TEST light action.)
RANGE
HIGH
LOW
POWER OFF
FUNCTION
VOLTS
OHMS
FREQUENCY
Crankshaft/Camshaft Position