2005 INFINITI QX4 Factory Service Manual

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Page 177 of 3419

INFINITI QX4 2005 Factory Service Manual AT-106
DTC P0705 PARK/NEUTRAL POSITION SWITCH
Revision: October 20052005 QX56
Diagnostic ProcedureECS00CF9
1. CHECK PNP SW CIRCUIT
With CONSULT-II
1. Turn ignition switch “ON”. (Do not start engi

Page 178 of 3419

INFINITI QX4 2005 Factory Service Manual DTC P0705 PARK/NEUTRAL POSITION SWITCH
AT-107
D
E
F
G
H
I
J
K
L
MA
B
AT
Revision: October 20052005 QX56
4. CHECK SUB-HARNESS
1. Remove control valve with TCM. Refer to AT-231, "
Control Valve
With TCM

Page 179 of 3419

INFINITI QX4 2005 Factory Service Manual AT-108
DTC P0720 VEHICLE SPEED SENSOR A/T (REVOLUTION SENSOR)
Revision: October 20052005 QX56
DTC P0720 VEHICLE SPEED SENSOR A/T (REVOLUTION SENSOR)PFP:32702
DescriptionECS00CFA
The revolution sensor

AT-108
DTC P0720 VEHICLE SPEED SENSOR A/T (REVOLUTION SENSOR)
Revision: October 20052005 QX56
DTC P0720 VEHICLE SPEED SENSOR A/T (REVOLUTION SENSOR)PFP:32702
DescriptionECS00CFA
The revolution sensor detects the revolution of the idler gear parking pawl lock gear and emits a pulse signal.
The pulse signal is sent to the TCM which converts it into vehicle speed.
CONSULT-II Reference ValueECS00CFB
On Board Diagnosis LogicECS00CFC
This is an OBD-II self-diagnostic item.
Diagnostic trouble code “P0720 VEH SPD SEN/CIR AT” with CONSULT-II is detected under the following
conditions.
–When TCM does not receive the proper voltage signal from the sensor.
–After ignition switch is turned “ON”, irregular signal input from vehicle speed sensor MTR before the vehi-
cle starts moving.
Possible CauseECS00CFD
Harness or connectors
(The sensor circuit is open or shorted.)
Revolution sensor
Vehicle speed sensor MTR
DTC Confirmation ProcedureECS00CFE
CAUTION:
Always drive vehicle at a safe speed.
Be careful not to rev engine into the red zone on the tachometer.
NOTE:
If “DTC Confirmation Procedure” has been previously performed, always turn ignition switch “OFF”
and wait at least 10 seconds before performing the next test.
After the repair, perform the following procedure to confirm the malfunction is eliminated.
WITH CONSULT-II
1. Turn ignition switch “ON”. (Do not start engine.)
2. Select “DATA MONITOR” mode for “A/T” with CONSULT-II.
3. Drive vehicle and check for an increase of “VHCL/S SE·A/T”
value in response to “VHCL/S SE·MTR” value.
If the check result is NG, go to AT- 111 , "
Diagnostic Procedure" .
If the check result is OK, go to following step.
4. Select “DATA MONITOR” mode for “ENGINE” with CONSULT-II.
5. Start engine and maintain the following conditions for at least 5
consecutive seconds.
VHCL SPEED SE: 30 km/h (19 MPH) or more
THRTL POS SEN: More than 1.0/8
Selector lever: “D” position
Driving location: Driving the vehicle uphill (increased engine load) will help maintain the driving
conditions required for this test.
If the check result is NG, go to AT- 111 , "
Diagnostic Procedure" .
If the check result is OK, go to following step.
6. Maintain the following conditions for at least 5 consecutive seconds.
ENGINE SPEED: 3,500 rpm or more
THRTL POS SEN: More than 1.0/8
Selector lever: “D” position
Driving location: Driving the vehicle uphill (increased engine load) will help maintain the driving
conditions required for this test.
If the check result is NG, go to AT- 111 , "
Diagnostic Procedure" .
Item name Condition Display value (km/h)
VHCL/S SE·A/T During driving Approximately matches the speedometer reading.
BCIA0030E

Page 180 of 3419

INFINITI QX4 2005 Factory Service Manual DTC P0720 VEHICLE SPEED SENSOR A/T (REVOLUTION SENSOR)
AT-109
D
E
F
G
H
I
J
K
L
MA
B
AT
Revision: October 20052005 QX56
WITH GST
Follow the procedure “With CONSULT-II”.

Page 181 of 3419

INFINITI QX4 2005 Factory Service Manual AT-110
DTC P0720 VEHICLE SPEED SENSOR A/T (REVOLUTION SENSOR)
Revision: October 20052005 QX56
Wiring Diagram — AT — VSSA/TECS00CFF
BCWA0322E

Page 182 of 3419

INFINITI QX4 2005 Factory Service Manual DTC P0720 VEHICLE SPEED SENSOR A/T (REVOLUTION SENSOR)
AT-111
D
E
F
G
H
I
J
K
L
MA
B
AT
Revision: October 20052005 QX56
Diagnostic ProcedureECS00CFG
1. CHECK INPUT SIGNAL
With CONSULT-II
1. Turn igni

Page 183 of 3419

INFINITI QX4 2005 Factory Service Manual AT-112
DTC P0720 VEHICLE SPEED SENSOR A/T (REVOLUTION SENSOR)
Revision: October 20052005 QX56
4. CHECK SUB-HARNESS
1. Remove control valve with TCM. Refer to AT-231, "
Control Valve With TCM and A/T F

Page 184 of 3419

INFINITI QX4 2005 Factory Service Manual DTC P0725 ENGINE SPEED SIGNAL
AT-113
D
E
F
G
H
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J
K
L
MA
B
AT
Revision: October 20052005 QX56
DTC P0725 ENGINE SPEED SIGNALPFP:24825
DescriptionECS00CFH
The engine speed signal is sent from the ECM t

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