Nissan Altima L32. Instruction — part 473
ECM
EC-1013
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EC
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DTC RELATED ITEM
Engine operating condi-
tion in fail-safe mode
Detected items
Remarks
Reference
page
Engine speed will not
rise more than 2,500 rpm
due to the fuel cut
Malfunction indicator
lamp circuit
When there is an open circuit on MIL circuit, the ECM cannot warn the
driver by lighting up 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 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
P0011
Intake valve timing control
The signal is not energized to the intake valve timing control solenoid valve and the valve
control does not function.
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 tempera-
ture sensor circuit
Engine coolant temperature will be determined by ECM based on the following condition.
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)
More than approx. 4 minutes 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 cooling
fan operates while engine is running.
P0122
P0123
P0222
P0223
P2132
P2133
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.
So, the acceleration will be poor.
P0500
Vehicle speed sensor
The cooling fan operates (High) while engine is running.
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.
P0605
ECM
(When ECM calculation function is malfunctioning:)
ECM stops the electric throttle control actuator control, throttle valve is maintained at a
fixed opening (approx. 5 degrees) by the return spring.
ECM deactivates ASCD operation.
P1805
Brake switch
ECM controls the electric throttle control actuator by regulating the throttle opening to a
small range.
Therefore, acceleration will be poor.
Vehicle condition
Driving condition
When engine is idling
Normal
When accelerating
Poor acceleration
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
function
ECM stops the electric throttle control actuator control, throttle valve is maintained at a
fixed opening (approx. 5 degrees) by the return spring.
EC-1014
< ECU DIAGNOSIS >
[QR25DE EXCEPT FOR CALIFORNIA]
ECM
DTC Inspection Priority Chart
INFOID:0000000004349977
If some DTCs are displayed at the same time, perform inspections one by one based on the following priority
chart.
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 ac-
tuator
(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 driving, it slows down gradually by fuel cut. After the vehicle stops, the
engine stalls.
The engine can restart in N or P (CVT), Neutral (M/T) position, 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.
So, the acceleration will be poor.
DTC No.
Detected items
Engine operating condition in fail-safe mode
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
• P0705 P0850 Park/neutral position (PNP) switch
• P1550 P1551 P1552 P1553 P1554 Battery current sensor
• P1610 - P1615 NATS
• P2122 P2123 P2127 P2128 P2138 Accelerator pedal position sensor
ECM
EC-1015
< ECU DIAGNOSIS >
[QR25DE EXCEPT FOR CALIFORNIA]
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DTC Index
INFOID:0000000004349978
×:Applicable —: Not applicable
2
• P0031 P0032 Air fuel ratio (A/F) sensor 1 heater
• P0037 P0038 Heated oxygen sensor 2 heater
• P0075 Intake valve timing control solenoid valve
• P0130 P0131 P0132 P0133 P2A00 Air fuel ratio (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
• P0550 Power steering pressure sensor
• P0603 ECM power supply
• P0710 P0715 P0720 P0740 P0744 P0745 P0746 P0776 P0778 P0840 P0845 P1740 P1777 P1778 CVT related sensors,
solenoid valves and switches
• P1217 Engine over temperature (OVERHEAT)
• P1805 Brake switch
• P2100 P2103 Throttle control motor relay
• P2101 Electric throttle control function
• P2118 Throttle control motor
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)
• P0506 P0507 Idle speed control system
• P1148 Closed loop control
• P1421 Cold start control
• P1564 ASCD steering switch
• P1572 ASCD brake switch
• P1574 ASCD vehicle speed sensor
• P1715 Primary speed sensor
• P2119 Electric throttle control actuator
Priority
Detected items (DTC)
DTC*
1
Items
(CONSULT-III screen terms)
SRT code
Trip
MIL
Reference page
CONSULT-III
GST*
2
ECM*
3
U0101
0101*
4
LOST COMM (TCM)
—
1
×
U0140
0140*
4
LOST COMM (BCM)
—
1
×
U1001
1001*
4
CAN COMM CIRCUIT
—
2
—
P0000
0000
NO DTC IS DETECTED.
FURTHER TESTING
MAY BE REQUIRED.
—
—
Flashing*
7
—
P0011
0011
INT/V TIM CONT-B1
—
2
×
P0031
0031
A/F SEN1 HTR (B1)
—
2
×
P0032
0032
A/F SEN1 HTR (B1)
—
2
×
P0037
0037
HO2S2 HTR (B1)
—
2
×
P0038
0038
HO2S2 HTR (B1)
—
2
×
P0075
0075
INT/V TIM V/CIR-B1
—
2
×
P0101
0101
MAF SEN/CIRCUIT-B1
—
2
×
P0102
0102
MAF SEN/CIRCUIT-B1
—
1
×
P0103
0103
MAF SEN/CIRCUIT-B1
—
1
×
P0112
0112
IAT SEN/CIRCUIT-B1
—
2
×
EC-1016
< ECU DIAGNOSIS >
[QR25DE EXCEPT FOR CALIFORNIA]
ECM
P0113
0113
IAT SEN/CIRCUIT-B1
—
2
×
P0116
0116
ECT SEN/CIRC
—
2
×
P0117
0117
ECT SEN/CIRC
—
1
×
P0118
0118
ECT SEN/CIRC
—
1
×
P0122
0122
TP SEN 2/CIRC-B1
—
1
×
P0123
0123
TP SEN 2/CIRC-B1
—
1
×
P0125
0125
ECT SENSOR
—
2
×
P0127
0127
IAT SENSOR-B1
—
2
×
P0128
0128
THERMSTAT FNCTN
—
2
×
P0130
0130
A/F SENSOR1 (B1)
—
2
×
P0131
0131
A/F SENSOR1 (B1)
—
2
×
P0132
0132
A/F SENSOR1 (B1)
—
2
×
P0133
0133
A/F SENSOR1 (B1)
×
2
×
P0137
0137
HO2S2 (B1)
×
2
×
P0138
0138
HO2S2 (B1)
×
2
×
P0139
0139
HO2S2 (B1)
×
2
×
P0171
0171
FUEL SYS-LEAN-B1
—
2
×
P0172
0172
FUEL SYS-RICH-B1
—
2
×
P0181
0181
FTT SENSOR
—
2
×
P0182
0182
FTT SEN/CIRCUIT
—
2
×
P0183
0183
FTT SEN/CIRCUIT
—
2
×
P0222
0222
TP SEN 1/CIRC-B1
—
1
×
P0223
0223
TP SEN 1/CIRC-B1
—
1
×
P0300
0300
MULTI CYL MISFIRE
—
2
×
P0301
0301
CYL 1 MISFIRE
—
2
×
P0302
0302
CYL 2 MISFIRE
—
2
×
P0303
0303
CYL 3 MISFIRE
—
2
×
P0304
0304
CYL 4 MISFIRE
—
2
×
P0327
0327
KNOCK SEN/CIRC-B1
—
2
—
P0328
0328
KNOCK SEN/CIRC-B1
—
2
—
P0335
0335
CKP SEN/CIRCUIT
—
2
×
P0340
0340
CMP SEN/CIRC-B1
—
2
×
P0420
0420
TW CATALYST SYS-B1
×
2
×
P0441
0441
EVAP PURG FLOW/MON
×
2
×
P0442
0442
EVAP SMALL LEAK
×
2
×
P0443
0443
PURG VOLUME CONT/V
—
2
×
P0444
0444
PURG VOLUME CONT/V
—
2
×
P0445
0445
PURG VOLUME CONT/V
—
2
×
P0447
0447
VENT CONTROL VALVE
—
2
×
P0448
0448
VENT CONTROL VALVE
—
2
×
P0451
0451
EVAP SYS PRES SEN
—
2
×
P0452
0452
EVAP SYS PRES SEN
—
2
×
DTC*
1
Items
(CONSULT-III screen terms)
SRT code
Trip
MIL
Reference page
CONSULT-III
GST*
2
ECM*
3
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