Mitsubishi 3000GT - Ignition Primary Voltage Wave-Form Check

ENGINE ELECTRICAL - lanition Svstem
16-41
/
L
i
Analyzer
Ground
L
01L1008
STANDARD WAVE-FORM
Observation Conditions
IGNITION PRIMARY VOLTAGE WAVE-FORM
CHECK
MEASUREMENT METHOD
(1) Remove the ignition coil connector and connect the special
tool (harness connector: MD998464) in between.
(2) When observing the No. 1 - No. 4 cylinder group, connect
the primary pickup of the analyzer probe to the ignition
coil side connector terminal No. 2 (black clip on the special
tool).
For the No. 2 - No. 5 cylinder group, connect to terminal
No. 1 (red clip), and for the No. 3 - No. 6 cylinder group,
connect to terminal No. 4 (white clip).
(3) Ground the primary pickup ground terminal.
(4) Clamp the spark plug cable with the trigger pickup.
NOTE
(1) Clamp the spark plug cable of cylinder No. 1, No.
2 or No. 3 which belongs to the same group of the
cylinder to which the primary pickup is connected.
(2) The wave-form of any cylinder in the same group
is displayed on the left side of the screen.
FUNCTION
PRIMARY
PATTERN HEIGHT
HIGH (or LOW)
PAVERN SELECTOR
Engine revolutions
RASTER
Curb idle speed
(V)
100
PrimaryPrimary
*
ignitionignition
voltagevoltage
wave-form o wave-form kr
0
Zener
voltage
(Point C)
Dwell
section
b
Spark line (Point A)
/
b-4
Wave damping reduction section (Point B)
/
Time
7EL0149
/ TSB Revision