DIAGNOSIS FUNCTION



ENGINE WARNING LAMP (CHECK ENGINE LAMP)



If an abnormality occurs in any of the following items related to the unit injection engine control 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.

ENGINE WARNING LAMP INSPECTION ITEMS


Refer to , Inspection Chart For Diagnosis Code.

METHOD OF READING AND ERASING DIAGNOSIS CODES


Refer to , GROUP 00 - How to Use Troubleshooting/Inspection Service Points - Diagnosis Function.

INSPECTION USING M.U.T.-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.
note Testing the function of the actuator is found in SPECIAL FUNCTION menu.
2.After repairing, re-check using the M.U.T.-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 M.U.T.-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 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 M.U.T.-III, an effective troubleshooting can be preformed. The freeze frame data shows the items selected from the list shown below in accordance with the diagnosis code.

Freeze frame data for each diagnosis code


note The details of associated context frames are shown in the table "Freeze frame data details" shown below.
Code No.
Diagnosis item
Associated context frames
P0001
Fuel flow regulator
4012
P0003
Fuel flow regulator low
4012
P0004
Fuel flow regulator high
4012
P0016
Camshaft position sensor/crank angle sensor phase problem
4016
P0030
Proportional oxygen sensor heater
4027
P0031
Proportional oxygen sensor heater low
4027
P0032
Proportional oxygen sensor heater high
4027
P0053
Proportional oxygen sensor heater resistance
4026
P0087
Rail pressure too low
4022
P0088
Fuel injected quantity high
4022
P0089
High pressure fuel regulator
4022
P0090
High pressure fuel regulator circuit
4010
P0091
High pressure fuel regulator circuit low
4010
P0092
High pressure fuel regulator circuit high
4010
P0093
Fuel injected quantity low
4022
P0097
Intake air temperature sensor low
4009
P0098
Intake air temperature sensor high
4009
P0100
Air flow sensor
4025
P0102
Air flow sensor low
4005
P0103
Air flow sensor high
4005
P0104
Air flow sensor intermittent
4005
P0107
Intake air pressure sensor low
4009
P0108
Intake air pressure sensor high
4009
P0112
Air temperature sensor low
4009
P0113
Air temperature sensor high
4009
P0115
Engine coolant temperature sensor
4019
P0117
Engine coolant temperature sensor low
4009
P0118
Engine coolant temperature sensor high
4009
P0120
Throttle position sensor exceed (long time)
4036
P0121
Throttle position sensor exceed (short time)
4036
P0122
Throttle position sensor low
4036
P0123
Throttle position sensor high
4036
P0130
Proportional oxygen sensor circuit
4026
P0131
Proportional oxygen sensor low
4026
P0132
Proportional oxygen sensor high
4026
P0133
Proportional oxygen sensor slow response
4026
P0134
Proportional oxygen sensor no activity
4026
P0135
Proportional oxygen sensor heater circuit
4026
P0171
Proportional oxygen sensor value
4026
P0182
Fuel temperature sensor low
4010
P0183
Fuel temperature sensor high
4010
P0192
Rail pressure sensor low
4011
P0193
Rail pressure sensor high
4011
P0197
Engine oil temperature sensor low
4011
P0198
Engine oil temperature sensor high
4011
P0201
No. 1 fuel injector circuit
4032
P0202
No. 2 fuel injector circuit
4032
P0203
No. 3 fuel injector circuit
4032
P0204
No. 4 fuel injector circuit
4032
P0215
Engine control relay 1
4016
P0222
Accelerator pedal position sensor (main) low
4002
P0223
Accelerator pedal position sensor (main) high
4002
P0227
Accelerator pedal position sensor (sub) low
4002
P0228
Accelerator pedal position sensor (sub) high
4002
P0234
Turbocharger over boost
4021
P0235
Intake air pressure sensor
4020
P0237
Intake air pressure sensor low
4007
P0238
Intake air pressure sensor high
4007
P023E
Intake air pressure sensor correlation
4007
P0243
Variable geometry control motor
4037
P0244
Variable geometry control motor range
4037
P0245
Variable geometry control motor low
4037
P0246
Variable geometry control motor high
4037
P0262
No. 1 Fuel injector quantity lower
4032
P0265
No. 2 Fuel injector quantity lower
4032
P0268
No. 3 Fuel injector quantity lower
4032
P0271
No. 4 Fuel injector quantity lower
4032
P0299
Turbocharger underboost
4021
P0336
Crank angle sensor range
4016
P0339
Crank angle sensor intermittent
4016
P0341
Camshaft position sensor range
4016
P0401
EGR flow insufficient
4018
P0402
EGR flow excessive
4018
P0405
EGR valve position sensor low
4017
P0406
EGR valve position sensor high
4017
P0420
DPF overload
4024
P0460
Diesel gauge defect
4022
P0470
Exhaust differential pressure sensor
4013
P0472
Exhaust differential pressure sensor low
4013
P0473
Exhaust differential pressure sensor high
4013
P0483
Fan control
4015
P0487
Throttle valve too open
4035
P0488
Throttle valve too closed
4035
P0489
Throttle valve too much open
4023
P0490
Throttle valve not enough open
4023
P0500
Vehicle speed signal
4038
P0521
Engine oil pressure switch range
4033
P0524
Engine oil pressure switch low
4033
P0562
Battery voltage low
4001
P0563
Battery voltage high
4001
P0568
Cruise control vehicle speed
4031
P0571
Brake switch information (ABS/ASC data)
4008
P0578
Cruise control switch
4031
P0579
Cruise setpoint CAN data invalid
4031
P0600
Alternator excitation current
4001
P0603
EEPROM error
4029
P0606
Engine-ECU
4003
4029
P0615
Starter relar circuit
4016
P0617
Starter relar circuit high
4016
P0630
Chassis number not programmed
4028
P0658
Sensor supply voltage #1 too low
4025
P0659
Sensor supply voltage #1 too high
4025
P0668
ECU internal temperature low
4003
P0669
ECU internal temperature high
4003
P0686
Fuel pump relay circuit low
4000
P0687
Fuel pump relay circuit high
4000
P0691
Fan 1 control circuit
4015
P0692
Fan 1 control no load
4015
P0693
Fan 2 control circuit
4015
P0694
Fan 2 control no load
4015
P0704
Clutch switch
4030
P1113
Rail pressure under threshold
4022
P1161
Throttle valve stuck
4035
P1162
EGR valve stuck open
4023
P1166
Rail pressure over threshold
4022
P1197
Fuel injector
4010
P1199
Fuel tank level low
108
4022
P119F
Oil dilution detected
4025
P11A0
Fuel mean adaptation high
4019
P11A1
Fuel mean adaptation low
4019
P11A2
Fuel mean adaptation plausibility
4019
P1206
High pressure fuel regulator high temperature
4010
P129A
Variable geometry control motor position below the setpoint
4020
P129B
Variable geometry control motor position over the setpoint
4020
P129E
Variable geometry control motor is jammed
4020
P1349
Glow plug circuit high/over temperature
4004
P1350
Glow plug circuit low/open
4004
P1351
Glow plug not supplied
4004
P1352
Glow plug continually supplied
4004
P1366
No. 1 Fuel injector harness defect
4032
P1367
No. 2 Fuel injector harness defect
4032
P1368
No. 3 Fuel injector harness defect
4032
P1369
No. 4 Fuel injector harness defect
4032
P1434
Fuel additive pump circuit
4014
P1435
Fuel additive-ECU fail
4014
P1443
Fuel additive pump circuit low
4014
P1444
Fuel additive pump circuit high
4014
P1445
Fuel additive tank volume high
4014
P1446
Fuel additive tank volume low
4014
P1447
DPF clogged
4024
P1457
DPF absent
4024
P1459
EGR valve stuck closed
4023
P1461
EGR valve position exceed (long time)
4017
P1462
EGR valve position exceed (short time)
4017
P1490
DPF regeneration request exceed
4024
P1491
Fuel mean adaptation correction exceed high limit
4019
P1492
Fuel mean adaptation correction exceed low limit
4019
P1493
Fuel mean adaptation too many correction
4019
P1494
Fuel mean adaptation positive deviation
4019
P1495
Fuel mean adaptation negative deviation
4019
P1505
Airbag crash signal received
4025
P1506
A/C pressure switch
4001
P1512
Immobilizer random No. request timeout
4001
P1517
Immobilizer handshake timer timeout
4001
P1526
Alternator hardware fault detected
4001
P1527
Alternator charge ratio low
4001
P1528
Alternator charge ratio high
4001
P1530
EGR cooler solenoid valve
4006
P1531
EGR cooler solenoid valve low
4006
P1532
EGR cooler solenoid valve high
4006
P1536
Brake switch
4008
P1586
Sensor supply voltage #3 too low
4025
P1587
Sensor supply voltage #3 too high
4025
P1589
Air flow sensor supply voltage low
4005
P1590
Air flow sensor supply voltage high
4005
P1600
Fuel injector (ISA/IMA code)
4010
P1612
EEPROM error
4001
P1613
Variant coding not done/fail
4001
P1615
Immobilizer invalid key
4001
P1625
ASC torque request not plausible
4030
P1631
Overrun monitoring
4003
4034
P1639
Fuel pump relay circuit open
4000
P1640
Fuel pump relay high temperature
4000
P1641
DC charge converter switch circuit
4010
P1655
Engine run signal circuit low
4000
P1656
Engine run signal circuit high
4000
P1657
Engine run signal
4000
P1667
A/D converter monitoring
4029
P1670
ASC invalid torque request
4030
P16A0
Oil burning detected
4025
P1700
ECU internal (watch dog)
4029
P1727
T/M over torque
4030
P1728
Invalid torque
4030
P1775
Gearbox requesting limp home
4030
P2031
Exhaust gas temperature sensor plausible
4013
P2032
Exhaust gas temperature sensor low
4013
P2033
Exhaust gas temperature sensor high
4013
P2100
Throttle valve control motor
4006
P2102
Throttle valve control motor circuit low
4006
P2103
Throttle valve control motor circuit high
4006
P2106
Throttle valve control motor current
4006
P2107
Throttle valve control motor under voltage
4006
P2111
Throttle valve stuck
4036
P2118
Throttle valve control motor temperature
4006
P2119
Throttle valve control motor high temperature
4006
P2137
Accelerator pedal position sensor 1/2 incorrect
4002
P2143
EGR valve circuit
4005
P2144
EGR valve circuit low
4005
P2145
EGR valve circuit high
4005
P2146
Fuel injector (bank 1) circuit
4010
P2147
Fuel injector (bank 1) harness defect
4010
P2149
Fuel injector (bank 2) circuit
4010
P2150
Fuel injector (bank 2) harness defect
4010
P2192
System too rich
4026
P2193
System too lean
4026
P2196
Proportional oxygen sensor signal low
4026
P2197
Proportional oxygen sensor signal high
4026
P2231
Proportional oxygen sensor shorted to heater
4026
P2245
Proportional oxygen sensor reference voltage low
4026
P2246
Proportional oxygen sensor reference voltage high
4026
P2299
Brake/Accel position incompatible
4002
P2408
Additive tank cork fault
4028
P2413
EGR system
4005
P250B
Engine oil level sensor range
4001
P250C
Engine oil level sensor signal low
4001
P250D
Engine oil level sensor signal high
4001
P2519
A/C compressor power circuit
4028
P2520
A/C compressor power circuit low
4028
P2521
A/C compressor power circuit high
4028
P2530
Ignition switch START position circuit
4016
P2533
Ignition switch ON position circuit
4000
P2563
Variable geometry position sensor range
4020
P2564
Variable geometry position sensor low
4039
P2565
Variable geometry position sensor high
4039
P2670
Sensor supply voltage #2 too low
4025
P2671
Sensor supply voltage #2 too high
4025
P3002
Rail pressure too much
4022
P3003
Rail pressure not enough
4022
P3007
Air flow sensor plausibility (high)
4005
P3008
Air flow sensor plausibility (low)
4005
U0064
Fuel additive-ECU CAN timeout
4028
U0110
4WD-ECU CAN timeout
4028
U0118
Brake switch information (CAN data)
4008
U0121
ABS-ECU CAN timeout
4028
U0122
ASC-ECU CAN timeout
4028
U1000
ECU mute
4028
U1003
CAN bus off
4028
U1118
ETACS-ECU CAN timeout
4028
4041
U1213
ASC communication (CAN)
4030

Freeze frame data details


note The details of associated context frames shown in the table "Freeze frame data for each diagnosis code" are shown below.
Frame
Item No.
Data details
Unit
108
1
Fuel temperature
°C
2
Pressure control valve
%
3
Rail pressure (Limited)
MPa
4
Engine speed
r/min
5
Rail pressure (peak)
MPa
4000



4001
6
Battery voltage
V
7
Engine temperature
mV
8
Atmospheric pressure
mV
9
Accelerator position
%
10
Vehicle speed
km/h
4002
6
Battery voltage
V
10
Vehicle speed
km/h
13
Accelerator pedal sensor 1
mV
14
Accelerator pedal sensor 2
mV
15
Brake status
ON,
OFF
4003



4004
6
Battery voltage
V
7
Engine temperature
mV
18
Glow control relay (output)
ON,
OFF
19
Glow control status
no preheating,
waiting,
preheating prep,
preheating,
preheating abort,
start preheating,
start no preheat,
wait post heat,
post heating,
post heat abort,
waiting,
int. preheating,
abort decelerate
20
Trouble in starting
rail pressure,
engine speed,
engine synchro,
reversible req.,
irreversible req
4005
6
Battery voltage
V
7
Engine temperature
mV
23
Throttle valve (relative)
%
24
Air mass sensor
mV
4006
6
Battery voltage
V
7
Engine temperature
mV
23
Throttle valve (relative)
%
28
Air temperature (AFS)
°C
4007
6
Battery voltage
V
7
Engine temperature
mV
31
Boost pressure
mV
32
Fuel mass
mg/st
8
Atmospheric pressure
mV
4008
34
Brake status
OFF,
not available,
ON
35
Brake status (CAN)
not valid,
ON,
severe pb,
absent,
hold
36
Brake switch
OFF,
ON
37
Vehicle acceleration
m/s2
10
Vehicle speed
km/h
4009



4010
6
Battery voltage
V
40
Fuel temperature
mV
41
Metering unit
mV
42
Pressure value
mV
43
Rail pressure (peak)
mV
4011
6
Battery voltage
V
40
Fuel temperature
mV
46
Metering unit
mV
42
Pressure value
mV
48
Zero fuel calibration
inactive,
active
4012
4
Engine speed
r/min
50
Rail pressure (peak)
MPa
51
Metering unit (target)
mA
52
Metering unit
mV
53
Engine current status
starting,
running,
afterrun
4013
6
Battery voltage
V
7
Engine temperature
mV
56
Differential pressure offset
mV
57
DPF temperature sensor
mV
58
Additive minimum level information
not reached,
reached
4014
6
Battery voltage
V
40
Fuel temperature
mV
61
Additivation status
done,
successful
62
Additive tank volume
ml
58
Additive minimum level information
not reached,
reached
4015
6
Battery Voltage
V
7
Engine temperature
mV
66
PWM fun (output)
ON,
OFF
67
Fan control (after run)
ON,
OFF
68
Main relay previous opening
ON,
OFF
4016
6
Battery voltage
V
70
Coolant temperature
°C
20
Trouble in starting
rail pressure,
engine speed,
engine synchro,
reversible req.,
irreversible req
68
Main relay previous opening
ON,
OFF
4017
70
Coolant temperature
°C
4
Engine speed
r/min
76
EGR valve position (target)
%
32
Fuel mass
mg/st
4018
70
Coolant temperature
°C
4
Engine speed
r/min
76
EGR valve position (target)
%
81
Airmass per cylinder
mg/st
32
Fuel mass
mg/st
4019
70
Coolant temperature
°C
4
Engine speed
r/min
85
Boost pressure
kPa
86
Atmospheric pressure
kPa
81
Airmass per cylinder
mg/st
4020
70
Coolant temperature
°C
4
Engine speed
r/min
90
Boost pressure actuator (target)
%
91
Boost pressure act (relative)
%
92
Boost pressure actuator (output)
%
4021
4
Engine speed
r/min
32
Fuel mass
mg/st
85
Boost pressure
kPa
86
Atmospheric pressure
kPa
97
Boost pressure (target)
kPa
4022
1
Fuel temperature
°C
4
Engine speed
r/min
32
Fuel mass
mg/st
101
Rail pressure (Limited)
MPa
50
Rail pressure (peak)
MPa
4023
70
Coolant temperature
°C
4
Engine speed
r/min
76
EGR valve position (target)
%
106
PWM (output)
%
4024
1
Fuel temperature
°C
4
Engine speed
r/min
109
Differential pressure
kPa
110
DPF gas flow rate
l/h
111
Distance since last regeneration
km
4025
15
Brake status
ON,
OFF
4
Engine speed
r/min
32
Fuel mass
mg/st
115
Metering unit (target)
mA
50
Rail pressure (peak)
MPa
4026
1
Fuel temperature
°C
118
Lambda sensor status
invalid signal,
valid signal
119
Lambda sensor
-
120
Fuel mean value adaptation
ON,
OFF
32
Fuel mass
mg/st
4027
1
Fuel temperature
°C
118
Lambda sensor status
invalid signal,
valid signal
119
Lambda sensor
-
125
LSU sensor status
inactive,
active
32
Fuel mass
mg/st
4028
4
Engine speed
r/min
70
Coolant temperature
°C
10
Vehicle speed
km/h
6
Battery voltage
V
53
Engine current status
starting,
running,
afterrun
4029
4
Engine speed
r/min
70
Coolant temperature
°C
6
Battery voltage
V
10
Vehicle speed
km/h
4030
4
Engine speed
r/min
10
Vehicle speed
km/h
37
Vehicle acceleration
m/s2
139
Torque order
Nm
140
Propulsion torque
Nm
4031
4
Engine speed
r/min
10
Vehicle speed
km/h
143
Cruise control switch
MAIN,
CANCEL,
SET,
RESUME,
PAUSE,
Error
32
Fuel mass
mg/st
4032
4
Engine speed
r/min
146
Injection quantity
mg/st
147
Injection characteristic
post INJ 1,
post INJ 2,
main injection,
INJ pilot 1,
INJ pilot 2,
INJ pilot 3
20
Trouble in starting
rail pressure,
engine speed,
engine synchro,
reversible req.,
irreversible req
149
Fuel mass (target)
mg/st
4033
4
Engine speed
r/min
151
Oil temperature
°C
152
Oil pressure
high,
low
53
Engine current status
starting,
running,
afterrun
4034
4
Engine speed
r/min
70
Coolant temperature
°C
156
Torque demand 1
gas pedal,
CC,
propulsion,
drag torque,
traction,
increasing,
decreasing,
low idle
157
Torque demand 2
alternator,
servo pump,
AC compressor,
active temp
158
Exhaust gas temperature
warm,
cold,
split,
DPF level 1,
DPF level 2,
DPF level 3,
DPF level 4,
DPF prep
4035
70
Coolant temperature
°C
4
Engine speed
r/min
161
Throttle valve (target)
%
23
Throttle valve (relative)
%
163
Throttle valve (output)
%
4036
6
Battery voltage
V
70
Coolant temperature
°C
23
Throttle valve (relative)
%
163
Throttle valve (output)
%
4037
70
Coolant temperature
°C
6
Battery voltage
V
90
Boost pressure actuator (target)
%
91
Boost pressure actuator (relative)
%
92
Boost pressure actuator (output)
%
4038



4039
6
Battery voltage
V
70
Coolant temperature
°C
32
Fuel mass
mg/st
91
Boost pressure actuator (relative)
%
92
Boost pressure actuator (output)
%
4041
4
Engine speed
r/min
70
Coolant temperature
°C
10
Vehicle speed
km/h
6
Battery voltage
V
182
Missing CAN data
208h,
412h,
248h,
325h,
325h