Mitsubishi MOTORS Space Runner 1999 Workshop Manual Supplement page 447

13A-88
Special
patterns
pickup
Standard wave pattern
Observation conditions (from conditions above engine speed is increased by racing.)
(V)
10
0
Wave Pattern Observation Points
Check that cycle time T becomes shorter and the frequency increases when the engine speed is increased.
GDI –
INSPECTION PROCEDURE USING AN ANALYZER
Analyzer
AIR FLOW SENSOR (AFS)
Measurement Method
1. Disconnect the air flow sensor connector, and connect
2. Connect the analyzer special patterns pickup to air flow
Alternate Method (Test harness not available)
1. Connect the analyzer special patterns pickup to
Standard Wave Pattern
(V)
T
10
T1 T2
0
T
Troubleshooting
the special tool (test harness: MB991709) in between.
(All terminals should be connected.)
sensor connector terminal 3.
engine-ECU terminal 90.
Observation conditions
Function
Pattern height
Pattern selector
Engine r/min
The time (cycle time) T is reduced when
the amount of intake air increases.
Times T1 and T2 are equal.
Special patterns
Low
Display
Idle speed
Time
Time