Mitsubishi MOTORS Space Runner 1999 Workshop Manual Supplement page 450

Analyzer
Standard Wave Pattern
Observation conditions
Function
Pattern height
Pattern selector
Engine r/min
Standard wave pattern
Injector
open circuit
check signal
Injector
drive signal
Normal wave
pattern
GDI –
INJECTORS AND INJECTOR OPEN CIRCUIT CHECK
SIGNAL
Measurement Method
1. Connect the analyzer special patterns pickup to terminal
2. Connect the analyzer special patterns pickup to terminal
Special patterns
3. After checking terminal 1, check terminal 14 (No.2 injector),
pickup
(V)
4
0
8
4
0
Wave Pattern Observation Points
Troubleshooting
1 (No.1 injector) of the engine-ECU connector.
51 (injector open circuit check signal) of the engine-ECU
connector.
terminal 2 (No.3 injector) and terminal 15 (No.4 injector).
Special pattern
Low
Display
Idle speed
Check that the injector drive time is identical to the time
displayed on the MUT-II.
Check that the injector signals become greatly extended
but soon return to their normal wave length when the
engine is suddenly raced.
Check that the injector open circuit check signal is
synchronized with each rising portion of the injector drive
signal.
13A-91
(ms)