2006 INFINITI M35 display

EC-626
[VQ35DE]
DTC P2122, P2123 APP SENSOR
Revision: 2006 January2006 M35/M45
DTC P2122, P2123 APP SENSORPFP:18002
Component DescriptionNBS0056L
The accelerator pedal position sensor is installed on the upper end
of the accelerator pedal assembly. The sensor detects the accelera-
tor position and sends a signal to the ECM.
Accelerator pedal position sensor has two sensors. These sensors
are a kind of potentiometers which transform the accelerator pedal
position into output voltage, and emit the voltage signal to the ECM.
In addition, these sensors detect the opening and closing speed of
the accelerator pedal and feed the voltage signals to the ECM. The
ECM judges the current opening angle of the accelerator pedal from
these signals and controls the throttle control motor based on these
signals.
Idle position of the accelerator pedal is determined by the ECM
receiving the signal from the accelerator pedal position sensor. The ECM uses this signal for the engine oper-
ation such as fuel cut.
CONSULT-II Reference Value in Data Monitor ModeNBS0056M
Specification data are reference values.
*: Accelerator pedal position sensor 2 signal is converted by ECM internally. Thus, it differs from ECM terminal voltage.
On Board Diagnosis LogicNBS0056N
These self-diagnoses have the one trip detection logic.
NOTE:
If DTC P2122 or P2123 is displayed with DTC P0643, first perform the trouble diagnosis for DTC P0643.
Refer to EC-499, "
DTC P0643 SENSOR POWER SUPPLY" .
FAIL-SAFE MODE
When the malfunction is detected, ECM enters fail-safe mode and the MIL lights up.
PBIB1741E
MONITOR ITEM CONDITION SPECIFICATION
ACCEL SEN 1
ACCEL SEN 2*
Ignition switch: ON
(Engine stopped)Accelerator pedal: Fully released 0.4 - 1.1V
Accelerator pedal: Fully depressed 3.7 - 4.8V
CLSD THL POS
Ignition switch: ON
(Engine stopped)Accelerator pedal: Fully released ON
Accelerator pedal: Slightly depressed OFF
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P2122
2122Accelerator pedal posi-
tion sensor 1 circuit low
inputAn excessively low voltage from the APP sen-
sor 1 is sent to ECM.
Harness or connectors
(APP sensor 1 circuit is open or
shorted.)
Accelerator pedal position sensor
(APP sensor 1) P2123
2123Accelerator pedal posi-
t io n s e n so r 1 ci rc u i t h i g h
inputAn excessively high voltage from the APP sen-
sor 1 is sent to ECM.
Engine operating condition in fail-safe mode
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 P2138 APP SENSOR
EC-647
[VQ35DE]
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MA
EC
Revision: 2006 January2006 M35/M45
DTC P2138 APP SENSORPFP:18002
Component DescriptionNBS00579
The accelerator pedal position sensor is installed on the upper end
of the accelerator pedal assembly. The sensor detects the accelera-
tor position and sends a signal to the ECM.
Accelerator pedal position sensor has two sensors. These sensors
are a kind of potentiometers which transform the accelerator pedal
position into output voltage, and emit the voltage signal to the ECM.
In addition, these sensors detect the opening and closing speed of
the accelerator pedal and feed the voltage signals to the ECM. The
ECM judges the current opening angle of the accelerator pedal from
these signals and controls the throttle control motor based on these
signals.
Idle position of the accelerator pedal is determined by the ECM
receiving the signal from the accelerator pedal position sensor. The ECM uses this signal for the engine oper-
ation such as fuel cut.
CONSULT-II Reference Value in Data Monitor ModeNBS0057A
Specification data are reference values.
*: Accelerator pedal position sensor 2 signal is converted by ECM internally. Thus, it differs from ECM terminal voltage.
On Board Diagnosis LogicNBS0057B
This self-diagnosis has the one trip detection logic.
NOTE:
If DTC P2138 is displayed with DTC P0643, first perform the trouble diagnosis for DTC P0643. Refer to
EC-499, "
DTC P0643 SENSOR POWER SUPPLY" .
FAIL-SAFE MODE
When the malfunction is detected, ECM enters fail-safe mode and the MIL lights up.
PBIB1741E
MONITOR ITEM CONDITION SPECIFICATION
ACCEL SEN 1
ACCEL SEN 2*
Ignition switch: ON
(Engine stopped)Accelerator pedal: Fully released 0.4 - 1.1V
Accelerator pedal: Fully depressed 3.7 - 4.8V
CLSD THL POS
Ignition switch: ON
(Engine stopped)Accelerator pedal: Fully released ON
Accelerator pedal: Slightly depressed OFF
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P2138
2138Accelerator pedal posi-
tion sensor circuit
range/performanceRationally incorrect voltage is sent to ECM
compared with the signals from APP sensor 1
and APP sensor 2.
Harness or connector
(APP sensor 1 and 2 circuit is open or
shorted.)
(TP sensor circuit is shorted.)
Accelerator pedal position sensor
(APP sensor 1 and 2)
Electric throttle control actuator
(TP sensor 1 and 2)
Engine operating condition in fail-safe mode
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.

EC-662
[VQ35DE]
DTC P2A00, P2A03 A/F SENSOR 1
Revision: 2006 January2006 M35/M45
4. CLEAR THE SELF-LEARNING DATA
With CONSULT-II
1. Start engine and warm it up to normal operating temperature.
2. Select “SELF-LEARNING CONT” in “WORK SUPPORT” mode with CONSULT- I I .
3. Clear the self-learning control coefficient by touching “CLEAR”.
4. Run engine for at least 10 minutes at idle speed.
Is the 1st trip DTC P0171, P0172, P0174 or P0175 detected?
Is it difficult to start engine?
Without CONSULT-II
1. Start engine and warm it up to normal operating temperature.
2. Turn ignition switch OFF.
3. Disconnect mass air flow sensor (1) harness connector.
4. Restart engine and let it idle for at least 5 seconds.
5. Stop engine and reconnect mass air flow sensor harness con-
nector.
6. Make sure DTC P0102 is displayed.
7. Erase the DTC memory. Refer to EC-67, "
HOW TO ERASE
EMISSION-RELATED DIAGNOSTIC INFORMATION" .
8. Make sure DTC P0000 is displayed.
9. Run engine for at least 10 minutes at idle speed.
Is the 1st trip DTC P0171, P0172, P0174 or P0175 detected?
Is it difficult to start engine?
Ye s o r N o
Yes >> Perform trouble diagnosis for DTC P0171, P0174 or P0172, P0175. Refer to EC-321, "DTC
P0171, P0174 FUEL INJECTION SYSTEM FUNCTION" or EC-332, "DTC P0172, P0175 FUEL
INJECTION SYSTEM FUNCTION" .
No >> GO TO 5.
SEF968Y
PBIB2783E

EC-716
[VQ35DE]
ASCD INDICATOR
Revision: 2006 January2006 M35/M45
Diagnostic ProcedureNBS0058P
1. CHECK OVERALL FUNCTION
Check ASCD indicator under the following conditions.
OK or NG
OK >>INSPECTION END
NG >> GO TO 2.
2. CHECK DTC
Check that DTC U1000 or U1001 is not displayed.
OK or NG
OK >> GO TO 3.
NG >> Perform trouble diagnosis for DTC U1000, U1001. Refer to EC-173, "
DTC U1000, U1001 CAN
COMMUNICATION LINE" .
3. CHECK DTC WITH “UNIFIED METER AND A/C AMP.”
Refer to DI-32, "
SELF-DIAG RESULTS" .
OK or NG
OK >> GO TO 4.
NG >> Go to DI-36, "
DTC [B2202] Meter Communication Circuit" .
4. CHECK INTERMITTENT INCIDENT
Refer to EC-165, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
>>INSPECTION END
ASCD INDICATOR CONDITION SPECIFICATION
CRUISE LAMP
Ignition switch: ON
MAIN switch: Pressed at the
1st time

at the 2nd timeON OFF
SET LAMP
MAIN switch: ON
When vehicle speed is
between 40 km/h (25 MPH)
and 144 km/h (89 MPH)
ASCD: Operating ON
ASCD: Not operating OFF

SNOW MODE SWITCH
EC-717
[VQ35DE]
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Revision: 2006 January2006 M35/M45
SNOW MODE SWITCHPFP:25310
DescriptionNBS0058Q
NOTE:
If DTC U1000 or U1001 are displayed, first perform the trouble diagnosis for DTC U1000, U1001.
Refer to EC-173, "
DTC U1000, U1001 CAN COMMUNICATION LINE" .
The snow mode switch signal is sent to the “unified meter and A/C amp.” from the snow mode switch. The
“unified meter and A/C amp.” then sends the signal to the ECM by CAN communication line.
The snow mode is used for driving or starting the vehicle on snowy roads or slippery areas. If the snow mode
is activated, the vehicle speed will not be accelerated immediately than your original pedal in due to avoid the
vehicle slip. In other words, ECM controls the rapid engine torque change by controlling the electric throttle
control actuator operating speed.
CONSULT-II Reference Value in the Data Monitor ModeNBS0058R
MONITOR ITEM CONDITION SPECIFICATION
SNOW MODE SW
Ignition switch: ONSNOW MODE SW: ON ON
SNOW MODE SW: OFF OFF

EC-726
[VK45DE]
INDEX FOR DTC
Revision: 2006 January2006 M35/M45
[VK45DE]INDEX FOR DTCPFP:00024
DTC No. IndexNBS0059A
NOTE:
If DTC U1000 or U1001 is displayed with other DTC, first perform the trouble diagnosis for DTC
U1000, U1001. Refer to EC-886, "
DTC U1000, U1001 CAN COMMUNICATION LINE" .
If DTC U1010 is displayed with other DTC, first perform the trouble diagnosis for DTC U1010. Refer
to EC-889, "
DTC U1010 CAN COMMUNICATION" .
DTC*1
Items
(CONSULT-II screen terms)Reference page
CONSULT-II
GST*
2ECM*3
U1000
1000*4CAN COMM CIRCUITEC-886
U1001
1001*4CAN COMM CIRCUITEC-886
U1010 1010 CONTROL UNIT(CAN)EC-889
P0000 0000NO DTC IS DETECTED.
FURTHER TESTING
MAY BE REQUIRED.—
P0011 0011 INT/V TIM CONT-B1EC-891
P0021 0021 INT/V TIM CONT-B2EC-891
P0031 0031 A/F SEN1 HTR (B1)EC-904
P0032 0032 A/F SEN1 HTR (B1)EC-904
P0037 0037 HO2S2 HTR (B1)EC-911
P0038 0038 HO2S2 HTR (B1)EC-911
P0051 0051 A/F SEN1 HTR (B2)EC-904
P0052 0052 A/F SEN1 HTR (B2)EC-904
P0057 0057 HO2S2 HTR (B2)EC-911
P0058 0058 HO2S2 HTR (B2)EC-911
P0075 0075 INT/V TIM V/CIR-B1EC-920
P0081 0081 INT/V TIM V/CIR-B2EC-920
P0101 0101 MAF SEN/CIRCUITEC-927
P0102 0102 MAF SEN/CIRCUITEC-936
P0103 0103 MAF SEN/CIRCUITEC-936
P0112 0112 IAT SEN/CIRCUITEC-943
P0113 0113 IAT SEN/CIRCUITEC-943
P 0 11 7 0 11 7 E C T S E N / C I R CEC-948
P 0 11 8 0 11 8 E C T S E N / C I R CEC-948
P0122 0122 TP SEN 2/CIRCEC-954
P0123 0123 TP SEN 2/CIRCEC-954
P0125 0125 ECT SENSOREC-961
P0127 0127 IAT SENSOREC-964
P0128 0128 THERMSTAT FNCTNEC-967
P0130 0130 A/F SENSOR1 (B1)EC-969
P0131 0131 A/F SENSOR1 (B1)EC-979
P0132 0132 A/F SENSOR1 (B1)EC-988
P0133 0133 A/F SENSOR1 (B1)EC-997
P0137 0137 HO2S2 (B1)EC-1009
P0138 0138 HO2S2 (B1)EC-1020

EC-730
[VK45DE]
INDEX FOR DTC
Revision: 2006 January2006 M35/M45
Alphabetical IndexNBS0059B
NOTE:
If DTC U1000 or U1001 is displayed with other DTC, first perform the trouble diagnosis for DTC
U1000, U1001. Refer to EC-886, "
DTC U1000, U1001 CAN COMMUNICATION LINE" .
If DTC U1010 is displayed with other DTC, first perform the trouble diagnosis for DTC U1010. Refer
to EC-889, "
DTC U1010 CAN COMMUNICATION" .
Items
(CONSULT-II screen terms)DTC*
1
Reference page
CONSULT-II
GST*
2ECM*3
A/F SEN1 HTR (B1) P0031 0031EC-904
A/F SEN1 HTR (B1) P0032 0032EC-904
A/F SEN1 HTR (B2) P0051 0051EC-904
A/F SEN1 HTR (B2) P0052 0052EC-904
A/F SENSOR1 (B1) P0130 0130EC-969
A/F SENSOR1 (B1) P0131 0131EC-979
A/F SENSOR1 (B1) P0132 0132EC-988
A/F SENSOR1 (B1) P0133 0133EC-997
A/F SENSOR1 (B1) P2A00 2A00EC-1387
A/F SENSOR1 (B2) P0150 0150EC-969
A/F SENSOR1 (B2) P0151 0151EC-979
A/F SENSOR1 (B2) P0152 0152EC-988
A/F SENSOR1 (B2) P0153 0153EC-997
A/F SENSOR1 (B2) P2A03 2A03EC-1387
A/T INTERLOCK P1730 1730AT-142
A/T TCC S/V FNCTN P0744 0744AT-128
APP SENSOR P2138 2138EC-1379
APP SEN 1/CIRC P2122 2122EC-1358
APP SEN 1/CIRC P2123 2123EC-1358
APP SEN 2/CIRC P2127 2127EC-1365
APP SEN 2/CIRC P2128 2128EC-1365
ASCD BRAKE SW P1572 1572EC-1302 (Models with ICC)
EC-1311
(Models with ASCD)
ASCD SW P1564 1564EC-1287
(Models with ICC)
EC-1294
(Models with ASCD)
ASCD VHL SPD SEN P1574 1574EC-1319
(Models with ICC)
EC-1321
(Models with ASCD)
ATF TEMP SEN/CIRC P0710 0710AT-135
BAT CURRENT SENSOR P1550 1550EC-1263
BAT CURRENT SENSOR P1551 1551EC-1269
BAT CURRENT SENSOR P1552 1552EC-1269
BAT CURRENT SENSOR P1553 1553EC-1275
BAT CURRENT SENSOR P1554 1554EC-1281
BRAKE SW/CIRCUIT P1805 1805EC-1329
CAN COMM CIRCUIT U1000
1000*4EC-886
CAN COMM CIRCUIT U1001
1001*4EC-886
CKP SEN/CIRCUIT P0335 0335EC-1099
CLOSED LOOP-B1 P1148 1148EC-1236

EC-736
[VK45DE]
PRECAUTIONS
Revision: 2006 January2006 M35/M45
Before replacing ECM, perform ECM Terminals and Refer-
ence Value inspection and make sure ECM functions prop-
erly. Refer to EC-836
.
Handle mass air flow sensor carefully to avoid damage.
Do not clean mass air flow sensor with any type of deter-
gent.
Do not disassemble electric throttle control actuator.
Even a slight leak in the air intake system can cause seri-
ous incidents.
Do not shock or jar the camshaft position sensor (PHASE),
crankshaft position sensor (POS).
After performing each TROUBLE DIAGNOSIS, perform DTC
Confirmation Procedure or Overall Function Check.
The DTC should not be displayed in the DTC Confirmation
Procedure if the repair is completed. The Overall Function
Check should be a good result if the repair is completed.
When measuring ECM signals with a circuit tester, never
allow the two tester probes to contact.
Accidental contact of probes will cause a short circuit and
damage the ECM power transistor.
Do not use ECM ground terminals when measuring input/
output voltage. Doing so may result in damage to the ECM's
transistor. Use a ground other than ECM terminals, such as
the ground.
B1 indicates the bank 1, B2 indicates the bank 2 as shown
in the figure.
MEF040D
SEF217U
SEF348N
PBIB1144E