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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 systemElectrical
wiring
diagram
on step-
ping motor
of idle
speed
actuator12
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Fuel-Fuel system(1) It is not allowed to use o-ring repeatedly.
(2) When installing o-ring, always be careful to avoid dam-
aging o-ring.
(3) Before installing, coat o-ring with spindle oil or gasoline.
It is not allowed to coat with engine oil, gear oil or
brake fluid.
(c) As shown in the diagram, install injection nozzle to oil feed
pipe and cylinder head.
Before installing, ensure that spindle oil and gasoline are
coated at the contact position between o-ring and oil feed
pipe.
(d) When disassembling oil feed pipe, always observe the fol-
lowing precautions.
(1) Remove oil feed pipe clips.
(2) Remove oil feed hose.
(3) Cover oil inlet of fuel distribution pipe with plastic bag
to avoid foreign materials entering the fuel distribution
pipe.injection nozzle6. Inspection of fuel leakage(1) After completing maintenance, check there is leakage with the whole fuel system.
(2) Connect hand-held tester to diagnostic joint.
(3) Turn ignition switch to ON and turn main switch of hand-held tester to ON.
(4) Switch hand-held tester to function test state.
(5) For further details, please see hand-held tester operating instruction.
(6) If there is no hand-held tester, connect battery anode and cathode to electric fuel pump joint.
(7) Ensure that there is no leakage with all parts of electric fuel pump.
(8) Turn ignition switch to LOCK.
(9) Disassemble hand-held tester from diagnostic interface joint.15o-ringoil feed pipeoil feed pipeo-ringwasherCorrect
Wrong
Page 203 of 419

Steering column--Steering systemSteering column--Steering system
Steering column--Steering systemSteering column--Steering systemSteering column--Steering system
Steering column
Steering system
Note
1. Notes that are necessary for steering system:
(a) It is necessary to change parts correctly, for they will influence the performance of steering system to
make running danger.
2. Notes that are necessary for SRS airbag:
(a) MR7180 assembles with SRS (auxiliary protection system) such as safety airbag at the side of driver
and safety airbag at the side of passenger.
Maintenance does not accord with correct repair step, this might incur SRS explodes suddenly in
repair term to make heavy accident. Before repairing auxiliary protection system (including
disassembling, assembling, check or change parts), it is necessary to read the notes in SRS chapter
(auxiliary protection system).
Malfunction phenomenon table
Following table could help you find the reason of malfunction. And the number in table is only used for indicat-
ing possible preferred sequence. Please check each part by sequence, if necessary, change this part.
Malfunction phenomenon Possible malfunction part Referred page
1.Tyre (tyre pressure is wrong). 109
2.Power steering oil level (low). 200
3.Driving belt (loose). -
4.Wheel alignment (wrong). 87
Steering is heavy 5.Steering system joint (abraded). -
6.Lower control arm ball joint (abraded). 99
7.Steering column (bent). -
8.Power steering oil pump. 203
9.Power steering gear. 205
1.Tyre (tyre pressure is wrong). 109
Return is bad 2.Wheel alignment (wrong). 87
3.Steering column (bent). -
4.Power steering gear. 205
1.Steering system joint (abraded). -
2.Lower control arm ball joint (abraded). 99
Clearance is too big. 3.Middle shaft, sliding fork (abraded). -
4.Front wheel bearing (abraded). 123
5.Power steering gear. 205
1.Power steering oil level (low). 200
2.Steering system joint (abraded). -
Abnormal noise
3.Power steering oil pump. 203
4.Power steering gear. 205
192
Page 250 of 419