BRP Johnson J25R4SUR - Crankshaft Position Sensor

96
IGNITION SYSTEM
IGNITION TESTS
Crankshaft position Sensor
Output Test
Disconnect crankshaft position sensor lead wire
connector from CDI unit.
Connect Peak Reading Voltmeter to sensor lead
wires as shown. Set tester range to SEN 50:
Remove spark plugs. Crank with starter.
Crankshaft position sensor output:
• White & black – 3.6 V or over
• Brown & black – 3.6 V or over
If measurement is out of specification, replace
power source coil.
Resistance Test
Disconnect sensor lead wire connector from CDI
unit.
Connect ohmmeter test probes to coil lead wires
as shown:
Pulser coil resistance:
• White & black – 148 to 222 Ω
• Brown & black – 148 to 222 Ω
If measurement is out of specification, replace the
crankshaft position sensor.
Sensor Tester probe connection
+ (Red) - (Black)
No. 1 White Black
No. 2 Brown
005578
Black
White
Brown
Sensor Tester probe connection
+ (Red) - (Black)
No. 1 White Black
No. 2 Brown
005574
White
Brown
Black