LEMON Manuals
: Even more car manuals for everyone: 1960-2025
Home
>>
Infiniti
>>
1990
>>
M30
>>
Repair and Diagnosis
>>
Engine Performance
>>
System
>>
Engine Controls - Basic Testing
April 5, 2026:
LEMON Manuals is launched!
Read the announcement.
Engine Controls - Basic Testing
Expand All (for easy ctrl-f)
Collapse All
Introduction
Visual Inspection
Mechanical Inspection
Compression
Exhaust System BACKPRESSURE
Fuel Pressure
DISTRIBUTORLESS Ignition System Checks (Q45)
Notes
Ignition Coil Power Source
Ground Circuit
Output Signal Circuit
Ignition Coil Resistance
Power Transistor
Power Transistor Relay
Crank Angle & Sub-Crank Angle Sensor Signal
Optical Ignition System Checks (M30)
Notes
Spark
Ignition Coil Power Source
Ground Circuit
Input Signal Circuit
Output Signal Circuit
Ignition Coil Resistance
Power Transistor
Crank Angle Sensor
Idle Speed & Ignition Timing Specs
Summary