Nissan Frontier D40. Instruction — part 433
ECM
EC-423
< ECU DIAGNOSIS >
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• When there is an open circuit on MIL circuit, the ECM cannot warn the driver by illuminating MIL when there
is malfunction on engine control system.
Therefore, when electrical controlled throttle and part of ECM related diagnoses are continuously detected
as NG for 5 trips, ECM warns the driver that engine control system malfunctions and MIL circuit is open by
means of operating the fail-safe function.
The fail-safe function also operates when above diagnoses except MIL circuit are detected, and demands
the driver to repair the malfunction.
DTC No.
Detected items
Engine operating condition in fail-safe mode
P0102
P0103
Mass air flow sensor circuit
Engine speed will not rise more than 2,400 rpm due to the fuel cut.
P0117
P0118
Engine coolant temperature
sensor circuit
Engine coolant temperature will be determined by ECM based on the following condi-
tion.
CONSULT-III displays the engine coolant temperature decided by ECM.
Condition
Engine coolant temperature decided (CONSULT-
III display)
Just as ignition switch is turned ON
or START
40
°
C (104
°
F)
Approx. 4 minutes or more after
engine starting
80
°
C (176
°
F)
Except as shown above
40 - 80
°
C (104 - 176
°
F)
(Depends on the time)
When the fail-safe system for engine coolant temperature sensor is activated, the cool-
ing fan operates while engine is running.
P0122
P0123
P0222
P0223
P2135
Throttle position sensor
The ECM controls the electric throttle control actuator in regulating the throttle opening
in order for the idle position to be within +10 degrees.
The ECM regulates the opening speed of the throttle valve to be slower than the normal
condition.
Therefore, the acceleration will be poor.
P0643
Sensor power supply
ECM stops the electric throttle control actuator control, throttle valve is maintained at a
fixed opening (approx. 5 degrees) by the return spring.
P2100
P2103
Throttle control motor relay
ECM stops the electric throttle control actuator control, throttle valve is maintained at a
fixed opening (approx. 5 degrees) by the return spring.
P2101
Electric throttle control func-
tion
ECM stops the electric throttle control actuator control, throttle valve is maintained at a
fixed opening (approx. 5 degrees) by the return spring.
P2118
Throttle control motor
ECM stops the electric throttle control actuator control, throttle valve is maintained at a
fixed opening (approx. 5 degrees) by the return spring.
P2119
Electric throttle control actu-
ator
(When electric throttle control actuator does not function properly due to the return
spring malfunction:)
ECM controls the electric throttle actuator by regulating the throttle opening around the
idle position. The engine speed will not rise more than 2,000 rpm.
(When throttle valve opening angle in fail-safe mode is not in specified range:)
ECM controls the electric throttle control actuator by regulating the throttle opening to
20 degrees or less.
(When ECM detects the throttle valve is stuck open:)
While the vehicle is being driven, it slows down gradually because of fuel cut. After the
vehicle stops, the engine stalls.
The engine can restart in P or N (A/T), neutral position (M/T), and engine speed will not
exceed 1,000 rpm or more.
P2122
P2123
P2127
P2128
P2138
Accelerator pedal position
sensor
The ECM controls the electric throttle control actuator in regulating the throttle opening
in order for the idle position to be within +10 degrees.
The ECM regulates the opening speed of the throttle valve to be slower than the normal
condition.
Therefore, the acceleration will be poor.
Engine operating condition in fail-safe mode
Engine speed will not rise more than 2,500 rpm due to the fuel cut
EC-424
< ECU DIAGNOSIS >
[QR25DE]
ECM
DTC Inspection Priority Chart
INFOID:0000000005273436
If some DTCs are displayed at the same time, perform inspections one by one based on the following priority
chart.
DTC Index
INFOID:0000000005273437
EMISSION-RELATED DIAGNOSTIC INFORMATION ITEMS
Priority
Detected items (DTC)
1
• U0101 U0140 U1001 CAN communication line
• P0101 P0102 P0103 Mass air flow sensor
• P0112 P0113 P0127 Intake air temperature sensor
• P0116 P0117 P0118 P0125 Engine coolant temperature sensor
• P0122 P0123 P0222 P0223 P1225 P1226 P2135 Throttle position sensor
• P0128 Thermostat function
• P0181 P0182 P0183 Fuel tank temperature sensor
• P0327 P0328 Knock sensor
• P0335 Crankshaft position sensor (POS)
• P0340 Camshaft position sensor (PHASE)
• P0460 P0461 P0462 P0463 Fuel level sensor
• P0500 Vehicle speed sensor
• P0605 P0607 ECM
• P0643 Sensor power supply
• P0700 TCM
• P0705 Transmission range switch
• P0850 Park/neutral position (PNP) switch
• P1610 - P1615 NATS
• P1550 P1551 P1552 P1553 P1554 Battery current sensor
• P2122 P2123 P2127 P2128 P2138 Accelerator pedal position sensor
2
• P0031 P0032 A/F sensor 1 heater
• P0037 P0038 Heated oxygen sensor 2 heater
• P0075 Intake valve timing control solenoid valve
• P0130 P0131 P0132 P0133 P2A00 A/F sensor 1
• P0137 P0138 P0139 Heated oxygen sensor 2
• P0441 EVAP control system purge flow monitoring
• P0443 P0444 P0445 EVAP canister purge volume control solenoid valve
• P0447 P0448 EVAP canister vent control valve
• P0451 P0452 P0453 EVAP control system pressure sensor
• P0506 P0507 Idle speed control system
• P0550 Power steering pressure sensor
• P0603 ECM power supply
• P0710 P0717 P0720 P0731 P0732 P0733 P0734 P0735 P0740 P0744 P0745 P1730 P1752 P1754 P1757 P1759
P1762 P1764 P1767 P1769 P1772 P1774 A/T related sensors and solenoid valves
• P1805 Brake switch
• P2101 Electric throttle control function
• P2100 P2103 P2118 Electric throttle control actuator
3
• P0011 Intake valve timing control
• P0171 P0172 Fuel injection system function
• P0300 - P0304 Misfire
• P0420 Three way catalyst function
• P0442 P0456 EVAP control system (SMALL LEAK, VERY SMALL LEAK)
• P0455 EVAP control system (GROSS LEAK)
• P1148 Closed loop control
• P1217 Engine over temperature (OVERHEAT)
• P1421 Cold start control
• P1564 ASCD steering switch
• P1572 ASCD brake switch
• P1574 ASCD vehicle speed sensor
• P1715 Input speed sensor
• P2119 Electric throttle control actuator
ECM
EC-425
< ECU DIAGNOSIS >
[QR25DE]
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×
: Applicable
—: Not applicable
Items
(CONSULT-III screen terms)
DTC*
1
SRT code
Trip
MIL
lighting up
Reference
page
CONSULT-III
GST*
2
ECM*
3
LAST COMM (TCM)
U0101
0101
—
1
×
LAST COMM (BCM)
U0140
0140
—
1
×
CAN COMM CIRCUIT
U1001
1001*
4
—
2
—
NO DTC IS DETECTED.
FURTHER TESTING
MAY BE REQUIRED.
P0000
0000
—
—
Flashing*
5
INT/V TIM CONT-B1
P0011
0011
×
2
×
A/F SEN1 HTR (B1)
P0031
0031
—
2
×
A/F SEN1 HTR (B1)
P0032
0032
—
2
×
HO2S2 HTR (B1)
P0037
0037
—
2
×
HO2S2 HTR (B1)
P0038
0038
—
2
×
INT/V TIM V/CIR-B1
P0075
0075
—
2
×
MAF SEN/CIRCUIT
P0101
0101
—
2
×
MAF SEN/CIRCUIT
P0102
0102
—
1
×
MAF SEN/CIRCUIT
P0103
0103
—
1
×
IAT SEN/CIRCUIT
P0112
0112
—
2
×
IAT SEN/CIRCUIT
P0113
0113
—
2
×
ECT SEN/CIRC
P0116
0116
—
2
×
ECT SEN/CIRC
P0117
0117
—
1
×
ECT SEN/CIRC
P0118
0118
—
1
×
TP SEN 2/CIRC
P0122
0122
—
1
×
TP SEN 2/CIRC
P0123
0123
—
1
×
ECT SENSOR
P0125
0125
—
2
×
IAT SENSOR
P0127
0127
—
2
×
THERMSTAT FNCTN
P0128
0128
—
2
×
A/F SENSOR1 (B1)
P0130
0130
—
2
×
A/F SENSOR1 (B1)
P0131
0131
—
2
×
A/F SENSOR1 (B1)
P0132
0132
—
2
×
A/F SENSOR1 (B1)
P0133
0133
×
2
×
HO2S2 (B1)
P0137
0137
×
2
×
HO2S2 (B1)
P0138
0138
×
2
×
HO2S2 (B1)
P0139
0139
×
2
×
FUEL SYS-LEAN-B1
P0171
0171
—
2
×
FUEL SYS-RICH-B1
P0172
0172
—
2
×
FTT SENSOR
P0181
0181
—
2
×
FTT SEN/CIRCUIT
P0182
0182
—
2
×
FTT SEN/CIRCUIT
P0183
0183
—
2
×
TP SEN 1/CIRC
P0222
0222
—
1
×
TP SEN 1/CIRC
P0223
0223
—
1
×
MULTI CYL MISFIRE
P0300
0300
—
1 or 2
×
CYL 1 MISFIRE
P0301
0301
—
1 or 2
×
CYL 2 MISFIRE
P0302
0302
—
1 or 2
×
EC-426
< ECU DIAGNOSIS >
[QR25DE]
ECM
CYL 3 MISFIRE
P0303
0303
—
1 or 2
×
CYL 4 MISFIRE
P0304
0304
—
1 or 2
×
KNOCK SEN/CIRC-B1
P0327
0327
—
2
—
KNOCK SEN/CIRC-B1
P0328
0328
—
2
—
CKP SEN/CIRCUIT
P0335
0335
—
2
×
CMP SEN/CIRC-B1
P0340
0340
—
2
×
TW CATALYST SYS-B1
P0420
0420
×
2
×
EVAP PURG FLOW/MON
P0441
0441
×
2
×
EVAP SMALL LEAK
P0442
0442
×
2
×
PURG VOLUME CONT/V
P0443
0443
—
2
×
PURG VOLUME CONT/V
P0444
0444
—
2
×
PURG VOLUME CONT/V
P0445
0445
—
2
×
VENT CONTROL VALVE
P0447
0447
—
2
×
VENT CONTROL VALVE
P0448
0448
—
2
×
EVAP SYS PRES SEN
P0451
0451
—
2
×
EVAP SYS PRES SEN
P0452
0452
—
2
×
EVAP SYS PRES SEN
P0453
0453
—
2
×
EVAP GROSS LEAK
P0455
0455
—
2
×
EVAP VERY SML LEAK
P0456
0456
×
*
6
2
×
FUEL LEV SEN SLOSH
P0460
0460
—
2
×
FUEL LEVEL SENSOR
P0461
0461
—
2
×
FUEL LEVL SEN/CIRC
P0462
0462
—
2
×
FUEL LEVL SEN/CIRC
P0463
0463
—
2
×
VEH SPEED SEN/CIRC*
7
P0500
0500
—
2
×
ISC SYSTEM
P0506
0506
—
2
×
ISC SYSTEM
P0507
0507
—
2
×
PW ST P SEN/CIRC
P0550
0550
—
2
—
ECM BACK UP/CIRCUIT
P0603
0603
—
2
×
ECM
P0605
0605
—
1 or 2
×
or —
ECM
P0607
0607
—
1 (A/T)
2 (M/T)
×
(A/T)
— (M/T)
SENSOR POWER/CIRC
P0643
0643
—
1
×
TRANSMISSION CONT
P0700
0700
—
1
×
T/M RANGE SENSOR A
P0705
0705
—
2
×
ATF TEMP SEN/CIRC*
8
P0710
0710
—
2
×
INPUT SPEED SENSOR A
P0717
0717
—
2
×
OUTPUT SPEED SENSOR*7
P0720
0720
—
2
×
1GR INCORRECT RATIO*
7
P0731
0731
—
2
×
2GR INCORRECT RATIO*
7
P0732
0732
—
2
×
3GR INCORRECT RATIO*
7
P0733
0733
—
2
×
4GR INCORRECT RATIO*
7
P0734
0734
—
2
×
Items
(CONSULT-III screen terms)
DTC*
1
SRT code
Trip
MIL
lighting up
Reference
page
CONSULT-III
GST*
2
ECM*
3
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