Mitsubishi Pajero Pinin. Manual — part 89
GDI –
Troubleshooting
13A-105
CHECK CHART FOR RESISTANCE AND CONTINUITY
BETWEEN TERMINALS
1.
Turn the ignition switch to OFF.
2.
Disconnect the engine-ECU connector.
3.
Measure the resistance and check for continuity between
the terminals of the engine-ECU harness-side connector
while referring to the check chart.
NOTE
(1) When measuring resistance and checking continuity,
a harness for checking contact pin pressure should
be used instead of inserting a test probe.
(2) Checking need not be carried out in the order given
in the chart.
Caution
If the terminals that should be checked are mistaken,
or if connector terminals are not correctly shorted
to earth, damage may be caused to the vehicle wiring,
sensors, engine-ECU and/or ohmmeter.
Be careful to prevent this!
4.
If the ohmmeter shows any deviation from the standard
value, check the corresponding sensor, actuator and
related electrical wiring, and then repair or replace.
5.
After repair or replacement, recheck with the ohmmeter
to confirm that the repair or replacement has corrected
the problem.
GDI –
Troubleshooting
13A-106
Engine-ECU Harness Side Connector Terminal Arrangement
Terminal No.
Check item
Standard value, normal condition (check require-
ments)
5 – 47
EGR valve (D)
15 – 20
Ω
(at 20
C)
6 –
47
EGR valve (C)
32 – 47
EGR valve (B)
34 – 47
EGR valve (A)
16 – 47
Purge control solenoid valve
30 – 34
Ω
(at 20
C)
44 – 72
Engine coolant temperature sensor
5.1 – 6.5 k
Ω
(when engine coolant temperature is
0
C)
2.1 – 2.7 k
Ω
(when engine coolant temperature is
20
C)
0.9 – 1.3 k
Ω
(when engine coolant temperature is
40
C)
0.26 – 0.36 k
Ω
(when engine coolant temperature is
80
C)
46 – Body earth
Earth
Continuity (0
Ω
)
58 – Body earth
62 – 72
Intake air temperature sensor
5.3 – 6.7 k
Ω
(when intake air temperature is 0
C)
2.3 – 3.0 k
Ω
(when intake air temperature is 20
C)
1.0 – 1.5 k
Ω
(when intake air temperature is 40
C)
0.30 – 0.42 k
Ω
(when intake air temperature is 80
C)
79 – 49
Accelerator pedal position switch
Continuity (when the accelerator pedal is released)
No continuity (when the accelerator pedal is slightly
depressed)
89 – 47
Oxygen sensor heater control (front)
4.5 – 8.0
Ω
(at 20
C)
90 – 47
Oxygen sensor heater (rear)
11 – 18
Ω
(at 20
C)
GDI –
Troubleshooting
13A-107
CHECK AT THE THROTTLE VALVE CONTROLLER TERMINALS
TERMINAL VOLTAGE CHECK CHART
Throttle Valve Controller Terminal Arrangement
Terminal
No.
Check items
Requirements
Normal value
1
Throttle valve control servo
(A+)
Ignition switch: ON
Accelerator pedal: Fully opened
→
fully closed
Decreases slightly from
system voltage.
9
Throttle valve control servo
(B+)
fully closed
14
Throttle valve control servo
(A–)
Ignition switch: ON
Accelerator pedal: Fully closed
→
fully opened
Decreases slightly (approx.
2 V) from system voltage.
15
Throttle valve control servo
(B–)
fully opened
2
Power supply to throttle
valve control servo
Ignition switch: ON
System voltage
19
valve control servo
5
Power supply
Ignition switch: ON
System voltage
6
Sensor voltage
Ignition switch: ON
4.5 – 5.5 V
7
Throttle position sensor (1st
channel)
Ignition switch:
ON
Release the
accelerator pedal.
0.45 – 0.8 V
Depress the
accelerator pedal
fully.
3.9 – 4.9 V
20
Accelerator pedal position
sensor (2nd channel)
Ignition switch:
ON
Release the
accelerator pedal.
0.7 – 1.4 V*
1
Depress the
accelerator pedal
fully.
4.1 V or more*
1
NOTE:
Check that the voltage difference between *
1
and *
2
is 4 V or more.
GDI –
On-vehicle Service
GDI –
On-vehicle Service
GDI –
On-vehicle Service
13A-108
ON-VEHICLE SERVICE
Caution
(1) Never attempt to tamper the fixed SAS. The fixed SAS
is precisely adjusted at factory.
(2) Should it be tampered, the full closed position of the
throttle valve will be changed. This causes the
engine-ECU to learn a wrong position of the throttle
valve.
FUEL PRESSURE TEST
MEASUREMENT OF FUEL LOW PRESSURE BETWEEN
FUEL PUMP (LOW PRESSURE) AND FUEL PUMP
(HIGH PRESSURE)
1.
Release residual pressure from the fuel pipe line to prevent
fuel gush out.
NOTE
Refer to the ’00 PAJERO PININ Workshop Manual (Pub.
No. CKRE00E1) GROUP 13A – On-vehicle Service.
2.
Disconnect the high-pressure fuel hose at the fuel pump
(high pressure) side.
Caution
Cover the hose connection with rags to prevent splash
of fuel that could be caused by some residual pressure
in the fuel pipe line.
3.
Remove the union joint and bolt from the special tool
(adapter hose) and instead attach the special tool (hose
adapter) to the adapter hose.
4.
Install the special tool (for measuring the fuel pressure)
that was set up in step 3.
<When using the fuel pressure gauge set (special tool)>
(1) Install the special tool (for measuring the fuel pressure)
between the high-pressure fuel hose and the fuel pump
(high pressure).
(2) Install the fuel pressure gauge set (special tool) on
the special tool (for measuring the fuel pressure)
putting the gasket between them.
(3) Connect the lead wire of the fuel pressure gauge set
(special tool) to the power supply (cigarette lighter
socket) and to the MUT-
II
.
Fixed SAS
High-pressure
fuel hose
Fuel pump
(high-pressure)
MD998709
MD998742
Fuel
pump
(high
pressure)
Gasket
High-pressure
fuel hose
MB991637
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст