Mitsubishi MOTORS Space Runner 1999 Workshop Manual Supplement page 453

13A-94
Special
patterns
pickup
Standard Wave Pattern
Observation conditions
Function
Pattern height
Pattern selector
Engine condition
Standard wave pattern
(V)
The wave pattern
appears for an
instant, but soon
30
disappears.
20
10
EGR
valve
control
signal
wave
pattern
GDI –
Troubleshooting
EGR VALVE (STEPPER MOTOR)
Analyzer
Measurement Method
1. Disconnect the EGR valve connector, and connect the
2. Connect the analyzer special patterns pickup to the EGR
Alternate Method (Test harness not available)
1. Connect the analyzer special patterns pickup to
Special patterns
High
Display
When the engine coolant temperature is 20 C or below, turn the ignition switch from OFF
to ON (without starting the engine).
While the engine is idling, turn the A/C switch to ON.
Immediately after starting the warm engine
Point B
Coil reverse electromo-
tive force (Approx. 3
10V)
special tool (test harness: MB991658) in between.
valve-side connector terminal 1, terminal 3, terminal 4
and terminal 6 respectively.
engine-ECU terminal
connection terminal 31, and connection terminal 32
respectively.
Point A
Induced electromotive force
from the motor turning
39, connection terminal
Time
40,