Mitsubishi Montero (2002-2004). Manual — part 561
13Ab-1
CONTENTS
TROUBLESHOOTING STRATEGY. .
TROUBLE CODE DIAGNOSIS . . . . .
FAIL-SAFE FUNCTION REFERENCE
TABLE . . . . . . . . . . . . . . . . . . . . . . . .
DIAGNOSTIC TROUBLE CODE
CHART . . . . . . . . . . . . . . . . . . . . . . . .
SYMPTOM CHART . . . . . . . . . . . . . .
DATA LIST REFERENCE TABLE . . .
ACTUATOR TEST REFERENCE
TABLE. . . . . . . . . . . . . . . . . . . . . . . . .
CHECK AT THE POWERTRAIN
CONTROL MODULE (PCM). . . . . . . .
INSPECTION PROCEDURE USING AN
OSCILLOSCOPE . . . . . . . . . . . . . . . .
TROUBLESHOOTING STRATEGY
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MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
13Ab-2
.
TROUBLESHOOTING STRATEGY
M1131150000063
NOTE: If a DTC is erased, its "freeze frame" data will
be also erased and the readiness test status will be
reset. Store the "freeze frame" data before erasing
the DTC.
Use these steps to plan your diagnostic strategy. If
you follow them carefully, you will be sure to have
exhausted most of the possible ways to find an MFI
fault.
1. Gather as much information as possible about the
complaint from the customer.
2. Verify that the condition described by the
customer exists.
3. Check the vehicle for any MFI Diagnostic Trouble
Code (DTC).
4. If you cannot verify the condition and there are no
DTCs, the malfunction is intermittent. For
information on how to cope with intermittent
malfunctions, refer to GROUP 00, How to Use
Troubleshooting/Inspection Service Points
− How
to cope with Intermittent Malfunction
.
5. If you can verify the condition but there are no
DTCs, or the system cannot communicate with
the scan tool, refer to the trouble symptom
classification table.
6. If there is a DTC, record the number of the code,
then erase the code from the memory using the
scan tool.
7. Reconfirm the malfunction symptom and carry out
a test drive with the drive cycle pattern.
8. If DTC is set again, carry out an inspection with
the diagnostic trouble code procedures of that
code.
9. If DTC is not set again, the malfunction is
intermittent. For information on how to cope with
intermittent malfunctions, refer to GROUP 00,
How to Use Troubleshooting/Inspection Service
Points
− How to cope with Intermittent Malfunction
10.After repairs are completed, conduct a road test
duplicating the complaint set conditions to confirm
the malfunction has been connected.
NOTE: If the powertrain control module (PCM) is
replaced, Immobilizer Encrypted Code Registration
should be carried out, Refer to GROUP 54A, Ignition
Switch
−
On-vehicle Service
−
Immobilizer Encrypted
Code Registration
.
TROUBLE CODE DIAGNOSIS
M1131150500381
.
MALFUNCTION INDICATOR LAMP (SERVICE ENGINE
SOON OR CHECK ENGINE LAMP)
Among the on-board diagnostic items, a Service Engine Soon/
Malfunction Indicator Lamp illuminates to notify the driver of an
emission control malfunction.
However, when an irregular signal returns to normal and the
powertrain control module judges that it has returned to normal,
the Malfunction Indicator Lamp (SEVICE ENGINE SOON or
Check Engine Lamp) is switched off.
Moreover, when the ignition switch is turned off, the lamp is
switched off. Even if the ignition switch is turned on again, the
lamp does not illuminate until the malfunction is detected.
Immediately after the ignition switch is turned on, the Malfunc-
tion Indicator Lamp (SEVICE ENGINE SOON or Check Engine
Lamp) is lit for 20 seconds to indicate that the Malfunction Indi-
cator Lamp (SEVICE ENGINE SOON or Check Engine Lamp)
operates normally.
.
BRAKE
SERVICE
ENGINE SOON
F
H
C
E
AT
TEMP
C / D
LOCK
100
120
2
3
4
5
AKX01463AE
MALFUNCTION INDICATOR LAMP (SERVICE
ENGINE SOON OR CHECK ENGINE LAMP)
TROUBLE CODE DIAGNOSIS
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MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
13Ab-3
Items Indicated by the Malfunction Indicator Lamp (SEVICE ENGINE SOON or Check Engine Lamp)
DTC NO.
ITEMS
-
Powertrain control module (PCM) malfunction
P0101*
Volume airflow circuit range/performance problem
P0102*
Volume airflow circuit low input
P0106*
Barometric pressure circuit range/performance problem
P0107*
Barometric pressure circuit low input
P0108*
Barometric pressure circuit high input
P0111*
Intake air temperature circuit range/performance problem
P0112*
Intake air temperature circuit low input
P0113*
Intake air temperature circuit high input
P0116*
Engine coolant temperature circuit range/performance problem
P0117*
Engine coolant temperature circuit low input
P0118*
Engine coolant temperature circuit high input
P0122*
Throttle position sensor (main) circuit low input
P0123*
Throttle position sensor (main) circuit high input
P0125*
Insufficient coolant temperature for closed loop fuel control
P0128
Coolant thermostat (Coolant temperature below thermostat regulating temperature)
P0130
Heated oxygen sensor circuit (bank 1 sensor 1)
P0131
Heated oxygen sensor circuit low voltage (bank 1 sensor 1)
P0132
Heated oxygen sensor circuit high voltage (bank 1 sensor 1)
P0133
Heated oxygen sensor circuit slow response (bank 1 sensor 1)
P0134*
Heated oxygen sensor circuit no activity detected (bank 1 sensor 1)
P0135
Heated oxygen sensor heater circuit (bank 1 sensor 1)
P0136
Heated oxygen sensor circuit (bank 1 sensor 2)
P0137
Heated oxygen sensor circuit low voltage (bank 1 sensor 2)
P0138
Heated oxygen sensor circuit high voltage (bank 1 sensor 2)
P0139
Heated oxygen sensor circuit slow response (bank 1 sensor 2)
P0141
Heated oxygen sensor heater circuit (bank 1 sensor 2)
P0150
Heated oxygen sensor circuit (bank 2 sensor 1)
P0151
Heated oxygen sensor circuit low voltage (bank 2 sensor 1)
P0152
Heated oxygen sensor circuit high voltage (bank 2 sensor 1)
P0153
Heated oxygen sensor circuit slow response (bank 2 sensor 1)
P0154
Heated oxygen sensor circuit no activity detected (bank 2 sensor 1)
P0155
Heated oxygen sensor heater circuit (bank 2 sensor 1)
P0156
Heated oxygen sensor circuit (bank 2 sensor 2)
P0157
Heated oxygen sensor circuit low voltage (bank 2 sensor 2)
P0158
Heated oxygen sensor circuit high voltage (bank 2 sensor 2)
P0159
Heated oxygen sensor circuit slow response (bank 2 sensor 2)
P0161
Heated oxygen sensor heater circuit (bank 2 sensor 2)
P0171
System too lean (bank 1)
TROUBLE CODE DIAGNOSIS
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MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
13Ab-4
P0172
System too rich (bank 1)
P0174
System too lean (bank 2)
P0175
System too rich (bank 2)
P0181
Fuel tank temperature sensor circuit range/performance
P0182
Fuel tank temperature sensor circuit low input
P0183
Fuel tank temperature sensor circuit high input
P0201
Injector circuit
− cylinder 1
P0202
Injector circuit
− cylinder 2
P0203
Injector circuit
− cylinder 3
P0204
Injector circuit
− cylinder 4
P0205
Injector circuit
− cylinder 5
P0206
Injector circuit
− cylinder 6
P0222*
Throttle position sensor (sub) circuit low input
P0223*
Throttle position sensor (sub) circuit high input
P0300
Random/multiple cylinder misfire detected
P0301
Cylinder 1 misfire detected
P0302
Cylinder 2 misfire detected
P0303
Cylinder 3 misfire detected
P0304
Cylinder 4 misfire detected
P0305
Cylinder 5 misfire detected
P0306
Cylinder 6 misfire detected
P0335*
Crankshaft position sensor circuit
P0340*
Camshaft position sensor circuit
P0401
Exhaust gas recirculation flow insufficient detected
P0403
Exhaust gas recirculation control circuit
P0421
Warm up catalyst efficiency below threshold (bank 1)
P0431
Warm up catalyst efficiency below threshold (bank 2)
P0441
Evaporative emission system incorrect purge flow
P0442
Evaporative emission system leak detected (Small leak)
P0443
Evaporative emission system purge control valve circuit
P0446
Evaporative emission system vent control circuit
P0451
Evaporative emission system pressure sensor range/performance
P0452
Evaporative emission system pressure sensor low input
P0453
Evaporative emission system pressure sensor high input
P0455
Evaporative emission system leak detected (Gross leak)
P0456
Evaporative emission system leak detected (Very small leak)
P0461
Fuel level sensor circuit range/performance
P0500
Vehicle speed sensor malfunction
P0513
Immobilizer malfunction
P0551
Power steering pressure sensor circuit range/performance
DTC NO.
ITEMS
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