Mitsubishi Galant 9G. Manual — part 1221
ON-VEHICLE SERVICE
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.8L ENGINE>
13B-1184
HEATED OXYGEN SENSOR CHECK
M1131005000691
Required Special Tools:
• MB991958: Scan tool (MUT-III Sub Assembly)
• MB991824: V.C.I.
• MB991827: USB Cable
• MB991910: Main Harness A
• MB991316: Test Harness
• MD998464: Test Harness
.
<Right bank and left bank heated oxygen sensor
(front)>
1. Using scan tool MB991958, observe HO
2
S reading. If
values are unsatisfactory, or if a scan tool is not available,
use the following procedure:
(1) Disconnect the heated oxygen sensor connector and
connect special tool MD998464 to the connector on the
heated oxygen sensor side.
(2) Make sure that there is continuity [4.5-8.0 ohms at 20
°C
(68
°F)] between terminal No. 1 (red clip) and terminal No.
3 (blue clip) on the heated oxygen sensor connector.
(3) If there is no continuity, replace the heated oxygen
sensor.
(4) Warm up the engine until engine coolant is 80
°C (176°F)
or higher.
(5) Perform a tracing for 5 minutes or more with the engine
speed of 4,500 r/min.
(6) Connect a digital voltage meter between terminal No. 2
(black clip) and terminal No. 4 (white clip).
2. While repeatedly revving the engine, measure the heated
oxygen sensor output voltage.
Standard value:
ENGINE
HEATED OXYGEN
SENSOR OUTPUT
VOLTAGE
REMARKS
When revving
engine
0.6
− 1.0 V
If you make the
air/fuel ratio rich by
revving the engine
repeatedly, a
normal heated
oxygen sensor will
output a voltage of
0.6
− 1.0 V.
AKX01624
HEATED
OXYGEN
SENSOR
EQUIPMENT
SIDE
CONNECTOR
MD998464
BLUE
RED
AC
AKX01624
HEATED
OXYGEN
SENSOR
COMPONENT
SIDE
CONNECTOR
MD998464
WHITE
BLACK
AL
ON-VEHICLE SERVICE
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.8L ENGINE>
13B-1185
CAUTION
• Be very careful when connecting the jumper wire;
incorrect connection can damage the oxygen sensor.
• Be careful the heater is broken when voltage of beyond
8V is applied to the oxygen sensor heater.
NOTE: If the sufficiently high temperature (of approximate
400
°
C or more) is not reached although the oxygen sensor is
normal, the output voltage would be possibly low although the
rich air-fuel ratio. Therefore, if the output voltage is low, use a
jumper wire to connect the terminal No.1 (red clip of special
tool) and the terminal No. 3 (blue clip of special tool) of the oxy-
gen sensor with a (+) terminal and (-) terminal of 8 V power
supply respectively, then check again.
3. If the output voltage is not within the standard value, replace
the heated oxygen sensor.
NOTE: For removal and installation of the heated oxygen sen-
sor, refer to GROUP 15, Exhaust Pipe and Main Muffler
.
<Right bank and left bank heated oxygen sensor
(rear)>
1. Using scan tool MB991958, observe HO
2
S reading. If
values are unsatisfactory, or if Scan tool is not available, use
the following procedure:
(1) Disconnect the heated oxygen sensor connector and
connect special tool MB991316 to the connector on the
heated oxygen sensor side.
(2) Make sure that there is continuity [11-18 ohms at 20
°C
(68
°F)] between terminal No. 1 (red clip) and terminal No.
3 (blue clip) on the heated oxygen sensor connector.
(3) If there is no continuity, replace the heated oxygen
sensor.
(4) Warm up the engine until engine coolant is 80
°C (176°F)
or higher.
(5) Perform a tracing for 5 minutes or more with the engine
speed of 4,500 r/min.
(6) Connect a digital voltage meter between terminal No. 2
(black clip) and terminal No. 4 (white clip).
2. While repeatedly revving the engine, measure the heated
oxygen sensor output voltage.
Standard value:
AKX01624 AB
MB991316
HEATED
OXYGEN
SENSOR
EQUIPMENT
SIDE
CONNECTOR
BLUE
RED
AKX01625 AB
BLUE
JUMPER
WIRES
BLACK
RED
WHITE
MB991316
ON-VEHICLE SERVICE
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.8L ENGINE>
13B-1186
CAUTION
• Be very careful when connecting the jumper wire;
incorrect connection can damage the oxygen sensor.
• Be careful the heater is broken when voltage of beyond
8V is applied to the oxygen sensor heater.
3. If the output voltage is not within the standard value, replace
the heated oxygen sensor.
NOTE: If the sufficiently high temperature (of approximate
400
°
C or more) is not reached although the oxygen sensor is
normal, the output voltage would be possibly low although the
rich air-fuel ratio. Therefore, if the output voltage is low, use a
jumper wire to connect the terminal No.2 and the terminal No. 1
of the oxygen sensor with a (+) terminal and (-) terminal of 12 V
power supply respectively, then check again.
NOTE: For removal and installation of the heated oxygen sen-
sor, refer to GROUP 15, Exhaust Pipe and Main Muffler
INJECTOR CHECK
M1131005200521
.
<Right bank side (number 1, 3, 5 cylinders)>
1. Disconnect the intermediate connector B-32.
2. Measure the resistance between the injector intermediate
connector terminals.
Standard value:
3. Connect the injector intermediate connector.
.
ENGINE
HEATED OXYGEN
SENSOR OUTPUT
VOLTAGE
REMARKS
When revving
engine
0.6
− 1.0 V
If you make the
air/fuel ratio rich by
revving the engine
repeatedly, a
normal heated
oxygen sensor will
output a voltage of
0.6
− 1.0 V.
INJECTOR NO.
MEASUREMENT
TERMINAL
RESISTANCE
NO.1
5
− 9
10.5
− 13.5 Ω [20°C
(68
°F)]
NO.3
9
− 10
NO.5
4
− 9
1
2 3
6
7 8
4 5
9 10
AK203093
B-32
INTERMEDIATE
CONNECTOR
AB
ON-VEHICLE SERVICE
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.8L ENGINE>
13B-1187
<Left bank side (number 2, 4, 6 cylinders)>
1. Disconnect the injector connector.
2. Measure the resistance between injector side connector
terminals 1 and 2.
Standard value: 10.5
− 13.5 ohms [at 20°C (68°F)]
3. Connect the injector connector.
THROTTLE ACTUATOR CONTROL MOTOR
CHECK
M1131051000070
.
<Operation Inspection>
1. Disconnect the air intake hose from the throttle body.
2. Set the ignition switch to the "ON" position.
3. Operate the accelerator pedal and confirm that the throttle
valve is opening and closing accordingly.
.
<Checking the Terminal Resistance>
1. Disconnect the throttle position sensor connector.
2. Measure the resistance between terminal No. 1 and No. 2.
Standard value: 0.3
− 80 ohms [at 20°C (68°F)]
3. If resistance is outside the standard value, replace the
throttle body assembly.
EVAPORATIVE EMISSION PURGE SOLENOID
CHECK
M1131005600240
Refer to GROUP 17, Emission Control System
− Evaporative
Emission System
− Evaporative Emission Purge Solenoid
.
EVAPORATVE EMISSION VENTILATION
SOLENOID CHECK
M1131012800224
Refer to GROUP 17, Emission Control System
− Evaporative
Emission Canister and Fuel Tank Pressure Relief Valve
−
Evaporative Emission Canister and Fuel Tank Pressure Relief
Valve Inspection
AK000126
6
1 2 3 4 5
AK202992
THROTTLE ACTUATOR
CONTROL MOTOR
CONNECTOR
AB
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст