Mitsubishi Lancer Evolution X. Manual — part 321
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI)
13A-349
STEP 6. Using scan tool MB991958, check data list item 15:
Throttle Position Sensor (sub).
(1) Turn the ignition switch to the "ON" position.
(2) Detach the intake air hose at the throttle body.
(3) Disconnect the connector of the throttle position sensor.
(4) Use test harness special tool (MB991658) to connect only
terminals No. 3, No. 4, No. 5, and No. 6.
(5) Set scan tool MB991958 to the data reading mode for item
15, Throttle Position Sensor (sub).
• Output voltage should be 4.0 volts or more when the
throttle valve is fully closed with your finger.
• Output voltage should be 1.0 volt or less when the throt-
tle valve is fully open with your finger.
(6) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the sensor operating properly?
YES : It can be assumed that this malfunction is intermittent.
Refer to GROUP 00, How to Use
Troubleshooting/Inspection Service Points − How to
Cope with Intermittent Malfunctions
.
NO : Replace the ECM. When the ECM is replaced,
register the ID code. Refer to GROUP 42B, ID Code
Registration Necessity Judgment Table <Vehicles
with KOS>
or GROUP 42C, ID Codes
Registration Judgment Table <Vehicles with WCM>
. Then go to Step 8.
STEP 7. Replace the throttle body assembly.
(1) Replace the throttle body assembly.
(2) Turn the ignition switch to the "ON" position.
(3) After the DTC has been deleted, read the DTC again.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is DTC P0223 set?
YES : Replace the ECM. When the ECM is replaced,
register the ID code. Refer to GROUP 42B, ID Code
Registration Necessity Judgment Table <Vehicles
with KOS>
or GROUP 42C, ID Codes
Registration Judgment Table <Vehicles with WCM>
. Then go to Step 8.
NO : The inspection is complete.
STEP 8. Using scan tool MB991958, read the diagnostic
trouble code (DTC).
(1) Turn the ignition switch to the "ON" position.
(2) After the DTC has been deleted, read the DTC again.
(3) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is DTC P0223 set?
YES : Retry the troubleshooting.
NO : The inspection is complete.
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI)
13A-350
DTC P0234: Turbocharger Wastegate System Malfunction
.
TECHNICAL DESCRIPTION
• The ECM checks that the engine is not over-
charged by always monitoring intake air volume.
• The ECM protects the engine by shutting off fuel
when an overcharged condition is detected.
.
DESCRIPTIONS OF MONITOR METHODS
It detects overcharging failure by monitoring intake
air volume.
.
MONITOR EXECUTION
Continuous
.
MONITOR EXECUTION CONDITIONS
(Other monitor and Sensor)
Other Monitor (There is no temporary DTC stored
in memory for the item monitored below)
• Turbocharger wastegate solenoid monitor
Sensor (The sensor below is determined to be
normal)
• Mass airflow sensor
• Intake air temperature sensor
• Barometric pressure sensor
• Throttle position sensor
.
DTC SET CONDITIONS
Logic Flow Chart
.
Malfunction
Load value > 240 - 270%
Start
Yes
Yes
No
No
Continuous
failure for 1sec
End
Good
AK801251
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI)
13A-351
Check Condition, Judgement Criterion
• Volumetric efficiency is higher than 240 − 270 per-
cent.
.
FAIL-SAFE AND BACKUP FUNCTION
• Fuel is cut in abnormal engine overboost condi-
tion.
.
OBD-II DRIVE CYCLE PATTERN
Refer to Diagnostic Function − OBD-II Drive Cycle −
Pattern 17.
.
TROUBLESHOOTING HINTS (The most
likely causes for this code to be set are:)
• Turbocharger wastegate actuator failed.
• Charging pressure control system failed.
• ECM failed.
DIAGNOSIS
STEP 1. Check the intake charge pressure.
Refer to GROUP 15, On-vehicle Service − Intake Charge Pres-
Q: Are there any abnormalities?
YES : Repair or replace it. Then go to Step 3.
NO : Go to Step 2.
STEP 2. Check the charge pressure control system.
Refer to GROUP 15, On-vehicle Service − Intake Charge Pres-
sure Control System Check
.
Q: Are there any abnormalities?
YES : Repair or replace it. Then go to Step 3.
NO : Go to Step 3.
STEP 3. Test the OBD-II drive cycle.
(1) Carry out test drive with the drive cycle pattern. Refer to
Diagnostic Function − OBD-II Drive Cycle − Pattern 17
(2) Check the diagnostic trouble code (DTC).
Q: Is the DTC P0234 set?
YES : Retry the troubleshooting.
NO : The inspection is complete.
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI)
13A-352
DTC P0243: Turbocharger Wastegate Solenoid 1 Circuit
AK704405
1
2
3 4 5 6 7 8 9 10 11 12 13 14 15 16
17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48
49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64
1
3
2
4
2
1
2
8
7
6
5
4
3
11
21
20
19
18
17
16
15
14
13
12
9
22
1
10
52
20
2
1
A-10
A-13
B-09
20A
WHITE
WHITE
BLA
CK-
BLUE
BLA
CK-
BLUE
WHITE
A-34X
4
3
1
2
22
36
FUSIBLE LINK
OFF
ON
AB
RELAY BOX
(ENGINE COMPARTMENT)
ENGINE
CONTROL
MODULE
MFI
RELAY
TO ECM
TURBOCHARGER WASTEGATE SOLENOID 1 CIRCUIT
TURBOCHARGER
WASTEGATE SOLENOID 1
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст