Mitsubishi 380. Manual — part 481
MULTIPOINT FUEL INJECTION (MPI) DIAGNOSIS
MULTIPOINT FUEL INJECTION (MPI)
13A-16
SYSTEM READINESS TEST STATUS
.
PURPOSE
The ENGINE-ECU monitors the following main diag-
nosis items, judges if these items are in good condi-
tion or not, and then stores its history. The history
can be read out by using MUT III. (if the ECU has
judged an item before, the MUT III displays "Com-
plete").
In addition, if diagnosis codes are erased or the bat-
tery cable is disconnected, this history will also be
erased (the memory will be reset)
.
• Catalyst: P0421, P0431
• Heated oxygen sensor: P0130, P0131, P0132,
P0133, P0134, P0136, P0137, P0138, P0139,
P0150, P0151, P0152, P0153, P0154, P0156,
P0157, P0158, P0159
• Heated oxygen sensor heater: P0031, P0032,
P0037, P0038, P0051, P0052, P0057, P0058.
NOTE: After a repair is made for a DTC, the techni-
cian should drive the EOBD Drive Cycle checking
that the diagnostic tool (MUT-III Sub Assembly) dis-
plays all the Readiness Codes as "Complete".
MULTIPOINT FUEL INJECTION (MPI) DIAGNOSIS
MULTIPOINT FUEL INJECTION (MPI)
13A-17
DIAGNOSTIC TROUBLE CODE CHART
M1131151001490
CAUTION
During diagnosis, a DTC code associated with other systems may be set when the ignition switch is
turned on with connector(s) disconnected. On completion, confirm all systems for DTC(s). If DTC(s)
are set, erase them all.
NOTE: If the Check Engine Warning Lamp illuminates because of a malfunction of the Engine-ECU,
DTC - P0606 will be initialised. In this case, the ENGINE - ECU is the most probable cause. Refer to
DTC-P0606 in table for diagnosis.
DTC
DIAGNOSTIC ITEM
REFERENCE
PAGE
P0031
Heated oxygen sensor heater circuit low ( bank 1 sensor 1)
P0032
Heated oxygen sensor heater circuit high ( bank 1 sensor 1)
P0037
Heated oxygen sensor heater circuit low ( bank 1 sensor 2)
P0038
Heated oxygen sensor heater circuit high ( bank 1 sensor 2)
P0051
Heated oxygen sensor heater circuit low ( bank 2 sensor 1)
P0052
Heated oxygen sensor heater circuit high ( bank 2 sensor 1)
P0057
Heated oxygen sensor heater circuit low ( bank 2 sensor 2)
P0058
Heated oxygen sensor heater circuit high ( bank 2 sensor 2)
P0074
Ambient air temperature intermittant
P0101*
Mass airflow circuit range/performance problem
P0102*
Mass airflow circuit low input
P0103*
Mass airflow circuit high input
P0106
Manifold absolute pressure circuit range/performance problem
P0107
Manifold absolute pressure circuit low input
P0108
Manifold absolute pressure circuit high input
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
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)
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)
MULTIPOINT FUEL INJECTION (MPI) DIAGNOSIS
MULTIPOINT FUEL INJECTION (MPI)
13A-18
P0139
Heated oxygen sensor circuit slow response (bank 1 sensor 2)
P0140
Heated oxygen sensor circuit no activity detected (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)
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)
P0160
Heated oxygen sensor circuit no activity detected ( bank 2 sensor 2)
P0171
System too lean (bank 1)
P0172
System too rich (bank 1)
P0174
System too lean (bank 2)
P0175
System too rich (bank 2)
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
P0219
Engine overspeed condition
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
P0325
Knock sensor circuit
P0335*
Crankshaft position sensor circuit
P0340
Camshaft position sensor circuit
P0421
Warm up catalyst efficiency below threshold (bank 1)
DTC
DIAGNOSTIC ITEM
REFERENCE
PAGE
MULTIPOINT FUEL INJECTION (MPI) DIAGNOSIS
MULTIPOINT FUEL INJECTION (MPI)
13A-19
P0431
Warm up catalyst efficiency below threshold (bank 2)
P0441
Evaporative emission control system incorrect purge flow
P0443
Evaporative emission control system purge control valve circuit
P0461
Fuel level sensor (main) circuit range/performance
P0500*
Vehicle speed signal
P0506
Idle control system RPM lower than expected
P0507
Idle control system RPM higher than expected
P0513
Immobilizer malfunction
P0562
Battery voltage too low
P0563
Battery voltage too high
P0603*
EEPROM malfunction
P0606*
Powertrain control module main processor malfunction
P0630
VIN malfunction
P0638*
Throttle actuator control motor circuit range/ performance problem
P0830
Clutch switch - (Refer to Group 17-Auto Cruise Control)
P1564
Auto cruise switch - (Refer to Group 17-Auto Cruise Control)
P1571
Stop lamp switch - (Refer to Group 17-Auto Cruise Control)
P1603
Battery backup line malfunction
P2096
Post catalyst system too lean 1
P2097
Post catalyst system too lean 2
P2098
Post catalyst system too rich 1
P2099
Post catalyst system too rich 2
P2100*
Throttle actuator control motor circuit (open)
P2101*
Throttle actuator control motor magneto malfunction
P2102*
ETV motor circuit (shorted low)
P2103*
ETV motor 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
U1100
Engine CAN time
−out/ not equipped - (Refer to Group 54A)
U1102
ABS
−ECU time−out - (Refer to Group 54A)
U1120
Engine CAN message - (Refer to Group 54A)
U1121
T/M CAN message
DTC
DIAGNOSTIC ITEM
REFERENCE
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