Infiniti M45 (Y34). Manual — part 340
ON BOARD DIAGNOSTIC (OBD) SYSTEM
EC-49
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EC
ON BOARD DIAGNOSTIC (OBD) SYSTEM
PFP:00028
Introduction
ABS002DF
The ECM has an on board diagnostic system, which detects malfunctions related to engine sensors or actua-
tors. The ECM also records various emission-related diagnostic information including:
The above information can be checked using procedures listed in the table below.
×
: Applicable
—: Not applicable
*1: 1st trip DTCs for self-diagnoses concerning SRT items cannot be shown on the GST display.
*2: When DTC and 1st trip DTC simultaneously appear on the display, they cannot be clearly distinguished from each other.
The malfunction indicator lamp (MIL) on the instrument panel lights up when the same malfunction is detected
in two consecutive trips (Two trip detection logic), or when the ECM enters fail-safe mode. (Refer to
Two Trip Detection Logic
ABS002DG
When a malfunction is detected for the first time, 1st trip DTC and 1st trip Freeze Frame data are stored in the
ECM memory. The MIL will not light up at this stage. <1st trip>
If the same malfunction is detected again during the next drive, the DTC and Freeze Frame data are stored in
the ECM memory, and the MIL lights up. The MIL lights up at the same time when the DTC is stored. <2nd
trip> The “trip” in the “Two Trip Detection Logic” means a driving mode in which self-diagnosis is performed
during vehicle operation. Specific on board diagnostic items will cause the ECM to light up or blink the MIL,
and store DTC and Freeze Frame data, even in the 1st trip, as shown below.
×
: Applicable
—: Not applicable
Emission-related diagnostic information
SAE Mode
Diagnostic Trouble Code (DTC)
Mode 3 of SAE J1979
Freeze Frame data
Mode 2 of SAE J1979
System Readiness Test (SRT) code
Mode 1 of SAE J1979
1st Trip Diagnostic Trouble Code (1st Trip DTC)
Mode 7 of SAE J1979
1st Trip Freeze Frame data
Test values and Test limits
Mode 6 of SAE J1979
Calibration ID
Mode 9 of SAE J1979
DTC
1st trip DTC
Freeze Frame
data
1st trip Freeze
Frame data
SRT code
Test value
CONSULT-II
×
×
×
×
×
—
GST
×
×
*
1
×
—
×
×
ECM
×
×
*
2
—
—
—
—
Items
MIL
DTC
1st trip DTC
1st trip
2nd trip
1st trip
displaying
2nd trip
displaying
1st trip
displaying
2nd trip
display-
ing
Blinking
Lighting
up
Blinking
Lighting
up
Misfire (Possible three way cata-
lyst damage) — DTC: P0300 -
P0308 is being detected
×
—
—
—
—
—
×
—
Misfire (Possible three way cata-
lyst damage) — DTC: P0300 -
P0308 is being detected
—
—
×
—
—
×
—
—
One trip detection diagnoses
(Refer to
.)
—
×
—
—
×
—
—
—
Except above
—
—
—
×
—
×
×
—
EC-50
ON BOARD DIAGNOSTIC (OBD) SYSTEM
Emission-Related Diagnostic Information
ABS002DH
EMISSION-RELATED DIAGNOSTIC INFORMATION ITEMS
×
:Applicable —: Not applicable
Items
(CONSULT-II screen terms)
DTC*
1
SRT code
Test value/
Test limit
(GST only)
1st trip DTC
Reference
page
CONSULT-II
GST*
2
ECM*
3
CAN COMM CIRCUIT
U1000
1000*
5
—
—
—
CAN COMM CIRCUIT
U1001
1001*
5
—
—
×
NO DTC IS DETECTED.
FURTHER TESTING
MAY BE REQUIRED.
P0000
0000
—
—
—
—
INT/V TIM CONT-B1
P0011
0011
—
—
×
INT/V TIM CONT-B2
P0021
0021
—
—
×
HO2S1 HTR (B1)
P0031
0031
×
×
×
*
4
HO2S1 HTR (B1)
P0032
0032
×
×
×
*
4
HO2S2 HTR (B1)
P0037
0037
×
×
×
*
4
HO2S2 HTR (B1)
P0038
0038
×
×
×
*
4
HO2S1 HTR (B2)
P0051
0051
×
×
×
*
4
HO2S1 HTR (B2)
P0052
0052
×
×
×
*
4
HO2S2 HTR (B2)
P0057
0057
×
×
×
*
4
HO2S2 HTR (B2)
P0058
0058
×
×
×
*
4
MAF SEN/CIRCUIT
P0101
0101
—
—
—
MAF SEN/CIRCUIT
P0102
0102
—
—
—
MAF SEN/CIRCUIT
P0103
0103
—
—
—
IAT SEN/CIRCUIT
P0112
0112
—
—
×
IAT SEN/CIRCUIT
P0113
0113
—
—
×
ECT SEN/CIRC
P0117
0117
—
—
—
ECT SEN/CIRC
P0118
0118
—
—
—
TP SEN2/CIRC
P0122
0122
—
—
—
TP SEN2/CIRC
P0123
0123
—
—
—
ECT SENSOR
P0125
0125
—
—
—
IAT SENSOR
P0127
0127
—
—
×
THERMSTAT FNCTN
P0128
0128
—
—
×
HO2S1 (B1)
P0132
0132
—
×
×
HO2S1 (B1)
P0133
0133
×
×
×
*
4
HO2S1 (B1)
P0134
0134
—
×
×
HO2S2 (B1)
P0138
0138
—
×
×
HO2S2 (B1)
P0139
0139
×
×
×
*
4
HO2S1 (B2)
P0152
0152
—
×
×
HO2S1 (B2)
P0153
0153
×
×
×
*
4
HO2S1 (B2)
P0154
0154
—
×
×
HO2S2 (B2)
P0158
0158
—
×
×
HO2S2 (B2)
P0159
0159
×
×
×
*
4
FUEL SYS-LEAN-B1
P0171
0171
—
—
×
ON BOARD DIAGNOSTIC (OBD) SYSTEM
EC-51
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FUEL SYS-RICH-B1
P0172
0172
—
—
×
FUEL SYS-LEAN-B2
P0174
0174
—
—
×
FUEL SYS-RICH-B2
P0175
0175
—
—
×
FTT SENSOR
P0181
0181
—
—
×
FTT SEN/CIRCUIT
P0182
0182
—
—
×
FTT SEN/CIRCUIT
P0183
0183
—
—
×
TP SEN 1/CIRC
P0222
0222
—
—
—
TP SEN 1/CIRC
P0223
0223
—
—
—
MULTI CYL MISFIRE
P0300
0300
—
—
×
CYL 1 MISFIRE
P0301
0301
—
—
×
CYL 2 MISFIRE
P0302
0302
—
—
×
CYL 3 MISFIRE
P0303
0303
—
—
×
CYL 4 MISFIRE
P0304
0304
—
—
×
CYL 5 MISFIRE
P0305
0305
—
—
×
CYL 6 MISFIRE
P0306
0306
—
—
×
CYL 7 MISFIRE
P0307
0307
—
—
×
CYL 8 MISFIRE
P0308
0308
—
—
×
KNOCK SEN/CIRC-B1
P0327
0327
—
—
×
KNOCK SEN/CIRC-B1
P0328
0328
—
—
×
KNOCK SEN/CIRC-B2
P0332
0332
—
—
×
KNOCK SEN/CIRC-B2
P0333
0333
—
—
×
CKP SEN/CIRCUIT
P0335
0335
—
—
×
CMP SEN/CIRC-B1
P0340
0340
—
—
×
TW CATALYST SYS-B1
P0420
0420
×
×
×
*
4
TW CATALYST SYS-B2
P0430
0430
×
×
×
*
4
EVAP PURG FLOW/MON
P0441
0441
×
×
×
*
4
EVAP SMALL LEAK
P0442
0442
×
×
×
*
4
PURG VOLUME CONT/V
P0444
0444
—
—
×
PURG VOLUME CONT/V
P0445
0445
—
—
×
VENT CONTROL VALVE
P0447
0447
—
—
×
EVAP SYS PRES SEN
P0452
0452
—
—
×
EVAP SYS PRES SEN
P0453
0453
—
—
×
EVAP GROSS LEAK
P0455
0455
—
—
×
EVAP VERY SML LEAK
P0456
0456
×
*
6
×
×
*
4
FUEL LEV SEN SLOSH
P0460
0460
—
—
×
FUEL LEVEL SENSOR
P0461
0461
—
—
×
FUEL LEVL SEN/CIRC
P0462
0462
—
—
×
FUEL LEVL SEN/CIRC
P0463
0463
—
—
×
VEH SPEED SEN/CIRC*
5
P0500
0500
—
—
×
ISC SYSTEM
P0506
0506
—
—
×
ISC SYSTEM
P0507
0507
—
—
×
Items
(CONSULT-II screen terms)
DTC*
1
SRT code
Test value/
Test limit
(GST only)
1st trip DTC
Reference
page
CONSULT-II
GST*
2
ECM*
3
EC-52
ON BOARD DIAGNOSTIC (OBD) SYSTEM
PW ST P SEN/CIRC
P0550
0550
—
—
×
ECM
P0605
0605
—
—
×
or —
MIL/CIRC
P0650
0650
—
—
×
PNP SW/CIRC
P0705
0705
—
—
×
ATF TEMP SEN/CIRC
P0710
0710
—
—
×
VEH SPD SEN/CIR AT
P0720
0720
—
—
×
TCC SOLENOID/CIRC
P0740
0740
—
—
×
A/T TCC S/V FNCTN
P0744
0744
—
—
×
L/PRESS SOL/CIRC
P0745
0745
—
—
×
ECM BACK UP/CIRC
P1065
1065
—
—
×
MAF SENSOR
P1102
1102
—
—
—
INT/V TIM V/CIR-B1
P1111
1111
—
—
×
RADI TEMP SEN/CIRC
P1119
1119
—
—
—
ETC ACTR
P1121
1121
—
—
—
ETC FUNCTION/CIRC
P1122
1122
—
—
—
ETC MOT PWR
P1124
1124
—
—
—
ETC MOT PWR
P1126
1126
—
—
—
ETC MOT
P1128
1128
—
—
—
INT/V TIM V/CIR-B2
P1136
1136
—
—
×
INTK TIM S/CIRC-B1
P1140
1140
—
—
×
HO2S1 (B1)
P1143
1143
×
×
×
*
4
HO2S1 (B1)
P1144
1144
×
×
×
*
4
INTK TIM S/CIRC-B2
P1145
1145
—
—
×
HO2S2 (B1)
P1146
1146
×
×
×
*
4
HO2S2 (B1)
P1147
1147
×
×
×
*
4
CLOSED LOOP-B1
P1148
1148
—
—
—
HO2S1 (B2)
P1163
1163
×
×
×
*
4
HO2S1 (B2)
P1164
1164
×
×
×
*
4
HO2S2 (B2)
P1166
1166
×
×
×
*
4
HO2S2 (B2)
P1167
1167
×
×
×
*
4
CLOSED LOOP-B2
P1168
1168
—
—
—
TCS C/U FUNCTN
P1211
1211
—
—
×
TCS/CIRC
P1212
1212
—
—
×
ENG OVER TEMP
P1217
1217
—
—
—
FPCM/CIRCUIT
P1220
1220
—
—
×
CTP LEARNING
P1225
1225
—
—
×
CTP LEARNING
P1226
1226
—
—
×
SENSOR POWER/CIRC
P1229
1229
—
—
—
EVAP SMALL LEAK
P1442
1442
×
×
×
*
4
PURG VOLUME CONT/V
P1444
1444
—
—
×
VENT CONTROL VALVE
P1446
1446
—
—
×
Items
(CONSULT-II screen terms)
DTC*
1
SRT code
Test value/
Test limit
(GST only)
1st trip DTC
Reference
page
CONSULT-II
GST*
2
ECM*
3
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