Mitsubishi Stealth 1994 Import Service Manual page 670

MULTIPORT FUEL INJECTION -
I N S P E C T I O N
Using Scan Tool
<Spark Advance>
Function Item No. Data display
Data reading 44
<Ignition Timing Adjustment Mode>
Function Item No.
Data list 36
<Standard Ignition Timing>
Function Item No.
Actuator test
Normal
waveform
Normal waveform
Check condition
Ignition Engine: Warming up
l
advance Timing light: Set (set
l
timing light to check
actual ignition timing)
Data display
Continuity present or
not present between
ignition timing adjustment
terminal and ground
Drive
17 Set to ignition timing
adjustment mode
Using Oscilloscope
1. Primary signal of ignition coil
03140207
2. Control signal of ignition power transistor
On Vehicle Inspection of MFI Components
Engine state
700 rpm (Idle)
2,000 rpm
Check
Terminal
condition condition
Engine: Ignition timing ad-
l
Idling justment terminal is
grounded
Ignition timing ad-
justment terminal is
Check condition
Engine: idling
l
Timing light: set
l
(2) Connect the probe to oscilloscope pick-up point 1 as
shown in the circuit diagram, and check the primary
signal of the ignition coil.
Connect the probe to oscilloscope pick-up point 2 as shown
in the circuit diagram, and check the control signal of the
ignition power transistor.
Standard value
7 - 23"BTDC
30 - 5O"BTDC <Non Turbo>
23 - 43"BTDC <Turbo>
Standard value
ON
OFF
Normal condition