2004 INFINITI FX35 Service Manual

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Page 1889 of 4449

INFINITI FX35 2004 Service Manual EC-548
[VQ35DE]
DTC P1706 PNP SWITCH
Revision: 2004 November 2004 FX35/FX45
Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground te

Page 1890 of 4449

INFINITI FX35 2004 Service Manual DTC P1706 PNP SWITCH
EC-549
[VQ35DE]
C
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EC
Revision: 2004 November 2004 FX35/FX45
5. CHECK PNP SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT-II
1. Disconnect ECM harness connector

Page 1891 of 4449

INFINITI FX35 2004 Service Manual EC-550
[VQ35DE]
DTC P1805 BRAKE SWITCH
Revision: 2004 November 2004 FX35/FX45
DTC P1805 BRAKE SWITCHPFP:25320
DescriptionABS006X1
Brake switch signal is applied to the ECM through the stop lamp switch

Page 1892 of 4449

INFINITI FX35 2004 Service Manual DTC P1805 BRAKE SWITCH
EC-551
[VQ35DE]
C
D
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EC
Revision: 2004 November 2004 FX35/FX45
Wiring DiagramABS006X5
TBWM0260E

Page 1893 of 4449

INFINITI FX35 2004 Service Manual EC-552
[VQ35DE]
DTC P1805 BRAKE SWITCH
Revision: 2004 November 2004 FX35/FX45
Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground

Page 1894 of 4449

INFINITI FX35 2004 Service Manual DTC P1805 BRAKE SWITCH
EC-553
[VQ35DE]
C
D
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F
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H
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MA
EC
Revision: 2004 November 2004 FX35/FX45
3. DETECT MALFUNCTIONING PART
Check the following.
10A fuse
Fuse block (J/B) connector E201
J

Page 1895 of 4449

INFINITI FX35 2004 Service Manual EC-554
[VQ35DE]
DTC P1805 BRAKE SWITCH
Revision: 2004 November 2004 FX35/FX45
Component InspectionABS006X7
STOP LAMP SWITCH
1. Disconnect stop lamp switch harness connector.
2. Check continuity betwee

Page 1896 of 4449

INFINITI FX35 2004 Service Manual DTC P2122, P2123 APP SENSOR
EC-555
[VQ35DE]
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Revision: 2004 November 2004 FX35/FX45
DTC P2122, P2123 APP SENSORPFP:18002
Component DescriptionABS006X8
The accelerator pedal po

DTC P2122, P2123 APP SENSOR
EC-555
[VQ35DE]
C
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EC
Revision: 2004 November 2004 FX35/FX45
DTC P2122, P2123 APP SENSORPFP:18002
Component DescriptionABS006X8
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 ModeABS006X9
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 LogicABS006XA
These self-diagnoses have the one trip detection logic.
NOTE:
If DTC P2122 or P2123 is displayed with DTC P1229, first perform the trouble diagnosis for DTC P1229.
Refer to EC-489, "
DTC P1229 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 SEN1
Ignition switch: ON
(Engine stopped)Accelerator pedal: Fully released 0.5 - 1.0V
Accelerator pedal: Fully depressed 4.0 - 4.8V
ACCEL SEN2*
Ignition switch: ON
(Engine stopped)Accelerator pedal: Fully released 0.3 - 1.2V
Accelerator pedal: Fully depressed 3.9 - 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
(The APP sensor 1 circuit is open or
shorted.)
Accelerator pedal position sensor
(Accelerator pedal position sensor 1) P2123
2123Accelerator pedal posi-
tion sensor 1 circuit high
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.

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