Waveform Check Using An Analyzer - Mitsubishi Electric Lancer Evolution-VII Workshop Manual

16-30
ENGINE ELECTRICAL -

WAVEFORM CHECK USING AN ANALYZER

Ignition Secondary Voltage Waveform Check
MEASUREMENT METHOD
1. Clamp the secondary pickup around the spark plug cable.
NOTE
(1) The peak ignition voltage will be reversed when the
(2) Because of the two-cylinder simultaneous ignition
(3) Identifying which cylinder waveform is displayed can
2. Clamp the spark plug cable with the trigger pickup.
NOTE
Clamp the trigger pickup to the same spark plug cable
clamped by the secondary pickup.
Ignition System
spark cables No. 2 and No. 4, or No. 1 and No.
3 cylinders are clamped.
system, the waveforms for two cylinders in each group
appear during waveform observation (No. 1 cylinder
- No. 4 cylinder, No. 2 cylinder - No. 3 cylinder).
However, waveform observation is only applicable
for the cylinder with the spark plug cable clamped
by the secondary pickup.
be difficult. For reference, remember that the
waveform of the cylinder attached to the secondary
pickup will be displayed as stable.