Pins: Pin A is connected to ECU No. 65 pin
Pin B is connected to ECU No. 66 pin
Pin C is connected to ECU No. 67 pin
Pin D is connected to ECU No. 64 pin
Maintenance precautions:
1. It is not allowed to apply any force at axial direction with the purpose of pressing into or pulling out the
axle;
2. Before idle speed regulator with stepping motor is mounted into throttle body, its shaft must be at fully
retractive position;
3. Pay attention to clean and maintain bypass air passage frequently;
4. After removing battery or ECU, pay attention to self-teach stepping motor in time.
Self-teach method of M7 system: turn on ignition switch but not start engine immediately, and start it
after 5 seconds.
If engine idle speed is found bad at the moment, it is
necessary to repeat the above steps.
Simple measuring method: (removing the joint) place digital universal meter at ohm gear, and connect
2 terminals respectively to Ad pin and BC pin of regulator, and rated resis-
tance at
Engine control system·- EFI system
Electrical
wiring
diagram
on step-
ping motor
of idle
speed
actuator
12
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