Mitsubishi Grandis. Manual — part 690
TROUBLESHOOTING
MULTIPORT FUEL INJECTION (MPI)
13A-11
TROUBLESHOOTING
DIAGNOSIS TROUBLESHOOTING FLOW
M1131150000999
Refer to
, GROUP 00
− How to Use
Troubleshooting/Inspection Service Points.
DIAGNOSIS FUNCTION
M1131155500609
ENGINE WARNING LAMP (CHECK
ENGINE LAMP)
If an abnormality occurs in any of the following items
related to the Multipoint Fuel Injection (MPI) system,
the engine warning lamp will illuminate.
If the lamp remains illuminated or if the lamp
illuminates while the engine is running, check the
diagnosis code output.
MD998706
Injector test set
Checking the spray condition of
injectors
MB991607
Injector test
harness
MD998741
Injector test
adaptor
MB991976
Injector test
holder assembly
Tool
Number
Name
Use
MD998706
MB991607
MD998741
MB991976
AK305640
Engine warning lamp
(check engine lamp)
AB
TROUBLESHOOTING
MULTIPORT FUEL INJECTION (MPI)
13A-12
ENGINE WARNING LAMP INSPECTION ITEMS
Code No.
Diagnosis item
−
Engine-ECU <M/T> or engine-A/T-ECU <A/T>
P0100
Air flow sensor system
P0105
Barometric pressure sensor system
P0110
Intake air temperature sensor system
P0115
Engine coolant temperature sensor system
P0122*
Throttle position sensor (main) circuit low input
P0123*
Throttle position sensor (main) circuit high input
P0125*
Feedback system monitor
P0130
Cylinder 1, 4 oxygen sensor (front) system
P0135
Cylinder 1, 4 oxygen sensor (front) heater system
P0136
Cylinder 1, 4 oxygen sensor (rear) system
P0141
Cylinder 1, 4 oxygen sensor (rear) heater system
P0150
Cylinder 2, 3 oxygen sensor (front) system
P0155
Cylinder 2, 3 oxygen sensor (front) heater system
P0156
Cylinder 2, 3 oxygen sensor (rear) system
P0161
Cylinder 2, 3 oxygen sensor (rear) heater system
P0170
Abnormal fuel system (cylinder 1,4)
P0173
Abnormal fuel system (cylinder 2,3)
P0201
No.1 injector system
P0202
No.2 injector system
P0203
No.3 injector system
P0204
No.4 injector system
P0222*
Throttle position sensor (sub) circuit low input
P0223*
Throttle position sensor (sub) circuit high input
P0300*
Random/multiple cylinder misfire detected
P0301*
No.1 cylinder misfire detected
P0302*
No.2 cylinder misfire detected
P0303*
No.3 cylinder misfire detected
P0304*
No.4 cylinder misfire detected
P0325
Detonation sensor system
P0335
Crank angle sensor system
P0340
Camshaft position sensor system
P0403
Exhaust gas recirculation control system
P0421
Warm up catalyst malfunction (cylinder 1,4)
P0431
Warm up catalyst malfunction (cylinder 2,3)
P0443
Purge control solenoid valve system
P0500
Vehicle speed sensor system <M/T>
P0500
Vehicle speed signal system <A/T>
P0505
Idle speed control (ISC) system
TROUBLESHOOTING
MULTIPORT FUEL INJECTION (MPI)
13A-13
P0513
Immobilizer malfunction
P0551*
Power steering fluid pressure sensor system
P0603
EEP ROM system
P0606*
Engine-ECU <M/T> or engine-A/T-ECU <A/T> main processor malfunction
P0622
Alternator FR terminal system
P0638*
Throttle valve control servo circuit range/performance problem
P0642*
Throttle position sensor power supply
P0657*
Throttle valve control servo relay circuit malfunction
P0705
Inhibitor switch system
P0710
A/T fluid temperature sensor system
P0715*
Input shaft speed sensor system
P0720*
Output shaft speed sensor system
P0740*
Torque converter clutch solenoid valve system
P0750*
Low-reverse solenoid valve system
P0755*
Underdrive solenoid valve system
P0760*
Second solenoid valve system
P0765*
Overdrive solenoid valve system
P1021
Oil control valve system
P1602*
Communication malfunction (between engine-ECU <M/T> or engine-A/T-ECU <A/T>
main processor and system LSI)
P1603*
Battery backup circuit malfunction
P1751*
A/T control relay system
P2100*
Throttle valve control servo circuit (open)
P2101*
Throttle valve control servo magneto malfunction
P2102*
Throttle valve control servo circuit (shorted low)
P2103*
Throttle valve control servo circuit (shorted high)
P2122*
Accelerator pedal position sensor (main) circuit low input
P2123*
Accelerator pedal position sensor (main) circuit high input
P2127*
Accelerator pedal position sensor (sub) circuit low input
P2128*
Accelerator pedal position sensor (sub) circuit high input
P2135*
Throttle position sensor (main and sub) range/performance problem
P2138*
Accelerator pedal position sensor (main and sub) range/performance problem
P2173*
Abnormal intake air amount
U1108*
Combination meter time-out
Code No.
Diagnosis item
TROUBLESHOOTING
MULTIPORT FUEL INJECTION (MPI)
13A-14
NOTE:
.
•
If the engine warning lamp illuminates because of a malfunction of the engine-ECU <M/T> or
engine-A/T-ECU <A/T>, communication between MUT-III and the engine-ECU <M/T> or engine-A/T-ECU
<A/T> is impossible. In this case, the diagnosis code cannot be read.
•
After the engine-ECU <M/T> or engine-A/T-ECU <A/T> has detected a malfunction, the engine warning
lamp illuminates when the engine is next turned on and the same malfunction is re-detected.However, for
items marked with a "*" in the diagnosis code number column, the engine warning lamp illuminates only
on the first detection of the malfunction.
•
After the engine warning lamp illuminates, it will be switched off under the following conditions.
•
When the engine-ECU <M/T> or engine-A/T-ECU <A/T> monitored the power train malfunction three
times* met set condition requirements, it detected no malfunction.
*: In this case, "one time" indicates from engine start to stop.
•
For misfiring malfunction, when driving conditions (engine speed, engine coolant temperature, etc.)
are similar to those when the malfunction was first recorded.
•
Sensor 1 indicates, the sensor mounted at a position closest to the engine, and sensor 2 indicates the
sensor mounted at the position second closest to the engine.
METHOD OF READING AND ERASING
DIAGNOSIS CODES
Refer to
, GROUP 00
− How to Use
Troubleshooting/Inspection Service Points.
DIAGNOSIS USING DIAGNOSIS 2 MODE
1. Switch the diagnosis mode of the engine control
unit to DIAGNOSIS 2 mode using the MUT-III.
2. Carry out a road test.
3. Take a reading of the diagnosis code and repair
the problem location.
4. Turn the ignition switch to OFF and then back to
ON again.
NOTE: By turning the ignition switch to OFF, the
engine-ECU <M/T> or engine-A/T-ECU <A/T>
will switch the diagnosis mode from DIAGNOSIS
2 mode to DIAGNOSIS 1 mode.
5. Erase the diagnosis codes.
INSPECTION USING MUT-III DATA LIST
AND ACTUATOR TESTING
1. Carry out inspection by means of the data list and
the actuator test function, if there is an
abnormality, check and repair the chassis harness
and components.
2. After repairing, re-check using the MUT-III and
check that the abnormal input and output have
returned to normal as a result of the repairs.
3. Erase the diagnosis code memory.
4. Remove the MUT-III, and then start the engine
again and carry out a road test to confirm that the
problem has disappeared.
FREEZE FRAME DATA
When the engine-ECU <M/T> or engine-A/T-ECU
<A/T> detects a malfunction and stores a diagnosis
code, it also stores a current status of the engine.
This function is called "Freeze frame data". By
analyzing this "Freeze frame" data with the MUT-III,
an effective troubleshooting can be performed.
The display items of freeze frame data are shown
below.
DISPLAY ITEM LIST
Item No.
Data
Unit
12
Air flow sensor
gm/s
13
Intake air temperature sensor
°C
21
Engine coolant temperature sensor
°C
22
Crank angle sensor
r/min
24
Vehicle speed
km/h
44
Ignition advance
deg
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