Check The Engine Speed Main Sensor Signal - Hino Motors HINO 155 series Workshop Manual

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Check the engine speed main sensor signal

D
E52
0V
No pulse (No gear tooth)
Do the measurements meet the standard value?
Go to step 8.
ENGINE (J05E)/TROUBLESHOOTING
1.
E72
2.
3.
4.
SHTS021270300327
1 rotation
56 peaks (pulse)
YES
Connect the signal check harness to the engine ECU.
Connect the engine speed main sensor connector.
Start the engine.
Use the oscilloscope to measure the voltage between the termi-
nals of the engine ECU (signal check harness).
Measurement
conditions connections
Engine ECU (sig-
nal check har-
Engine idling ness)
NE+ (E52) –
NE- (E72)
Replace the engine speed main sensor.
Perform "After-inspection work" of INFOR-
MATION section.
Tester
Standard values
56 pulse
SHTS021270300328
NO