2001 INFINITI QX4 ignition wire

AAT475A
TCM Terminals and Reference Value=NBAT0027PREPARATIONNBAT0027S01IMeasure voltage between each terminal and terminal 25 or 48
by following ªTCM INSPECTION TABLEº.
SAT217JB
TCM HARNESS CONNECTOR TERMINAL LAYOUTNBAT0027S02TCM INSPECTION TABLENBAT0027S03(Data are reference values.)
Terminal
No.Wire color Item ConditionJudgement
standard
(Approx.)
1GYLine pressure
solenoid valve
When releasing accelerator pedal after warm-
ing up engine.1.5 - 3.0V
When depressing accelerator pedal fully after
warming up engine.0V
2 BR/YLine pressure
solenoid valve
(with dropping
resistor)When releasing accelerator pedal after warm-
ing up engine.5 - 14V
When depressing accelerator pedal fully after
warming up engine.0V
3 G/ORTorque converter
clutch solenoid
valve
When A/T performs lock-up. 8 - 15V
When A/T does not perform lock- up. 0V
4Ð Ð
ÐÐ
5Ð Ð Ð Ð
6Ð Ð Ð Ð
7Ð Ð Ð Ð
8Ð Ð Ð Ð
9Ð Ð Ð Ð
10 W/R Power sourceWhen turning ignition switch to ªONº.Battery volt-
age
When turning ignition switch to ªOFFº. 0V
TROUBLE DIAGNOSIS Ð GENERAL DESCRIPTION
TCM Terminals and Reference Value
AT-92

Terminal
No.Wire color Item ConditionJudgement
standard
(Approx.)
24 W/GASCD OD cut
signal
When ªACCELº set switch on ASCD cruise is
released.5 - 10V
When ªACCELº set switch on ASCD cruise is
applied.Less than 2V
25 B Ground
Ð0V
26 GPNP switch ª1º
position
When setting selector lever to ª1º position.Battery volt-
age
When setting selector lever to other positions. 0V
27 G/WPNP switch ª2º
positionWhen setting selector lever to ª2º position.Battery volt-
age
When setting selector lever to other positions. 0V
28 R/YPower source
(Memory back-up)
or
When turning ignition switch to ªOFFº.Battery volt-
age
When turning ignition switch to ªONº.Battery volt-
age
29 WRevolution sensor
(Measure in AC
range)
When vehicle cruises at 30 km/h (19 MPH).1V or more
Voltage rises
gradually in
response to
vehicle speed.
When vehicle parks. 0V
30*2 W (RX)
ÐÐ
31*2 L (TX) Ð Ð
32 P/BThrottle position
sensor
(Power source)Ignition switch ªONº. 4.5 - 5.5V
Ignition switch ªOFFº. 0V
33*1 G/R LAN Ð Ð
34 LPNP switch ªDº
position
When setting selector lever to ªDº position.Battery volt-
age
When setting selector lever to other positions. 0V
35 YPNP switch ªRº
positionWhen setting selector lever to ªRº position.Battery volt-
age
When setting selector lever to other positions. 0V
36 PPNP switch ªNº or
ªPº positionWhen setting selector lever to ªNº or ªPº posi-
tion.Battery volt-
age
When setting selector lever to other positions. 0V
37 Ð Ð Ð Ð
38 WTurbine revolution
sensor (Measure
in AC range)
When engine is running at 1,000 rpm1.2V
Voltage rises
gradually in
response to
engine speed.
TROUBLE DIAGNOSIS Ð GENERAL DESCRIPTION
TCM Terminals and Reference Value (Cont'd)
AT-94

TCM TERMINALS AND REFERENCE VALUENBAT0185S01Remarks: Specification data are reference values.
Terminal
No.Wire color Item ConditionJudgement
standard
(Approx.)
10 W/R Power source
When turning ignition switch to ªONº.Battery volt-
age
When turning ignition switch to ªOFFº. 0V
19 W/R Power source Same as No. 10
25 B Ground
Ð0V
28 R/YPower source
(Memory back-up)
or
When turning ignition switch to ªOFFº.Battery volt-
age
When turning ignition switch to ªONº.Battery volt-
age
48 B Ground
Ð0V
Diagnostic ProcedureNBAT0223
1 CHECK TCM POWER SOURCE STEP 1
1. Turn ignition switch to ON position.
(Do not start engine.)
2. Check voltage between TCM terminals 10, 19, 28 and ground.
SAT611J
OK or NG
OK©GO TO 2.
NG©GO TO 3.
GI
MA
EM
LC
EC
FE
TF
PD
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
TROUBLE DIAGNOSIS FOR POWER SUPPLY
Wiring Diagram Ð AT Ð MAIN (Cont'd)
AT-97

DescriptionNBAT0037The engine speed signal is sent from the ECM to the TCM.
TCM TERMINALS AND REFERENCE VALUENBAT0037S02Remarks: Specification data are reference values.
Terminal
No.Wire color Item ConditionJudgement
standard
(Approx.)
39 W/BEngine speed sig-
nal
Refer to EC-127, ªECM INSPECTION
TABLEº.Ð
ON BOARD DIAGNOSIS LOGICNBAT0037S03
Diagnostic trouble code Malfunction is detected when ... Check item (Possible cause)
: ENGINE SPEED SIG
TCM does not receive the proper voltage
signal from ECM.IHarness or connectors
(The sensor circuit is open or shorted.)
: P0725
SAT014K
SAT020K
DIAGNOSTIC TROUBLE CODE (DTC) CONFIRMATION
PROCEDURE
NBAT0037S01CAUTION:
Always drive vehicle at a safe speed.
NOTE:
If ªDIAGNOSTIC TROUBLE CODE CONFIRMATION PROCE-
DUREº has been previously conducted, always turn ignition
switch ªOFFº and wait at least 5 seconds before conducting
the next test.
After the repair, perform the following procedure to confirm the
malfunction is eliminated.
With CONSULT-II
1) Turn ignition switch ªONº and select ªDATA MONITORº mode
for ªENGINEº with CONSULT-II.
2) Start engine and maintain the following conditions for at least
10 consecutive seconds.
VHCL SPEED SE: 10 km/h (6 MPH) or more
THRTL POS SEN: More than 1.2V
Selector lever: D position (OD ªONº)
With GST
Follow the procedure ªWith CONSULT-IIº.
DTC P0725 ENGINE SPEED SIGNAL
Description
AT-116

SAT341H
DescriptionNBAT0060Shift solenoid valves A and B are turned ªONº or ªOFFº by the TCM
in response to signals sent from the PNP switch, vehicle speed and
throttle position sensors. Gears will then be shifted to the optimum
position.
Gear position1234
Shift solenoid valve A ON (Closed) OFF (Open) OFF (Open) ON (Closed)
Shift solenoid valve B ON (Closed) ON (Closed) OFF (Open) OFF (Open)
TCM TERMINALS AND REFERENCE VALUENBAT0060S02Remarks: Specification data are reference values.
Terminal
No.Wire color Item ConditionJudgement
standard
(Approx.)
11 L/WShift solenoid
valve A
When shift solenoid valve A operates.
(When driving in ªD
1ºorªD4º.)Battery volt-
age
When shift solenoid valve A does not operate.
(When driving in ªD
2ºorªD3º.)0V
ON BOARD DIAGNOSIS LOGICNBAT0060S03
Diagnostic trouble code Malfunction is detected when ... Check item (Possible cause)
: SFT SOL A/CIRC TCM detects an improper voltage drop
when it tires to operate the solenoid
valve.IHarness or connectors
(The solenoid circuit is open or shorted.)
IShift solenoid valve A
: P0750
SAT014K
SAT020K
DIAGNOSTIC TROUBLE CODE (DTC) CONFIRMATION
PROCEDURE
NBAT0060S01CAUTION:
Always drive vehicle at a safe speed.
NOTE:
If ªDIAGNOSTIC TROUBLE CODE CONFIRMATION PROCE-
DUREº has been previously conducted, always turn ignition
switch ªOFFº and wait at least 5 seconds before conducting
the next test.
After the repair, perform the following procedure to confirm the
malfunction is eliminated.
With CONSULT-II
1) Turn ignition switch ªONº and select ªDATA MONITORº mode
for ªENGINEº with CONSULT-II.
2) Start engine.
3) Drive vehicle in ªDº position and allow the transmission to shift
ª1º,ª2º (ªGEARº).
With GST
Follow the procedure ªWith CONSULT-IIº.
DTC P0750 SHIFT SOLENOID VALVE A
Description
AT-168

SAT341H
DescriptionNBAT0063Shift solenoid valves A and B are turned ªONº or ªOFFº by the TCM
in response to signals sent from the PNP switch, vehicle speed and
throttle position sensors. Gears will then be shifted to the optimum
position.
Gear position1234
Shift solenoid valve A ON (Closed) OFF (Open) OFF (Open) ON (Closed)
Shift solenoid valve B ON (Closed) ON (Closed) OFF (Open) OFF (Open)
TCM TERMINALS AND REFERENCE VALUENBAT0063S02Remarks: Specification data are reference values.
Terminal
No.Wire color Item ConditionJudgement
standard
(Approx.)
12 L/RShift solenoid
valve B
When shift solenoid valve B operates.
(When driving in ªD
1ºorªD2º.)Battery volt-
age
When shift solenoid valve B does not operate.
(When driving in ªD
3ºorªD4º.)0V
ON BOARD DIAGNOSIS LOGICNBAT0063S03
Diagnostic trouble code Malfunction is detected when ... Check item (Possible cause)
: SFT SOL B/CIRC TCM detects an improper voltage drop
when it tires to operate the solenoid
valve.IHarness or connectors
(The solenoid circuit is open or shorted.)
IShift solenoid valve B
: P0755
SAT014K
SAT020K
DIAGNOSTIC TROUBLE CODE (DTC) CONFIRMATION
PROCEDURE
NBAT0063S01CAUTION:
Always drive vehicle at a safe speed.
NOTE:
If ªDIAGNOSTIC TROUBLE CODE CONFIRMATION PROCE-
DUREº has been previously conducted, always turn ignition
switch ªOFFº and wait at least 5 seconds before conducting
the next test.
After the repair, perform the following procedure to confirm the
malfunction is eliminated.
With CONSULT-II
1) Turn ignition switch ªONº and select ªDATA MONITORº mode
for ªENGINEº with CONSULT-II.
2) Drive vehicle in ªDº position and allow the transmission to shift
1,2,3 (ªGEARº).
With GST
Follow the procedure ªWith CONSULT-IIº.
DTC P0755 SHIFT SOLENOID VALVE B
Description
AT-172

SAT142K
DescriptionNBAT0066IThrottle position sensor
The throttle position sensor detects the throttle valve position
and sends a signal to the TCM.
IThrottle position switch
Consists of a wide open throttle position switch and a closed
throttle position switch. The wide open position switch sends
a signal to the TCM when the throttle valve is open at least 1/2
of the full throttle position. The closed throttle position switch
sends a signal to the TCM when the throttle valve is fully
closed.
CONSULT-II REFERENCE VALUE IN DATA MONITOR
MODE
NBAT0066S02Remarks: Specification data are reference values.
Monitor item Condition Specification
Throttle position sensorFully-closed throttle Approximately 0.5V
Fully-open throttle Approximately 4V
TCM TERMINALS AND REFERENCE VALUENBAT0066S03Remarks: Specification data are reference values.
Terminal
No.Wire color Item ConditionJudgement
standard
(Approx.)
16 OR/WClosed throttle
position switch
(in throttle
position switch)
When releasing accelerator pedal after warm-
ing up engine.
[Refer to ªPreparationº, ªTCM SELF-DIAG-
NOSTIC PROCEDURE (No Tools)º, AT-46.]Battery volt-
age
When depressing accelerator pedal after
warming up engine.
[Refer to ªPreparationº, ªTCM SELF-DIAG-
NOSTIC PROCEDURE (No Tools)º, AT-46.]0V
17 OR/BWide open
throttle position
switch
(in throttle
position switch)When depressing accelerator pedal more than
half-way after warming up engine.Battery volt-
age
When releasing accelerator pedal after warm-
ing up engine.0V
32 P/BThrottle position
sensor
(Power source)Ignition switch ªONº. 4.5 - 5.5V
Ignition switch ªOFFº. 0V
41 PThrottle position
sensorWhen depressing accelerator pedal slowly
after warming up engine.
(Voltage rises gradually in response to throttle
position.)Fully-closed
throttle:
0.5 - 0.7V
Fully-open
throttle:
4V
42 BThrottle position
sensor
(Ground)ÐÐ
DTC P1705 THROTTLE POSITION SENSOR
Description
AT-176

SAT341H
DescriptionNBAT0068The overrun clutch solenoid valve is activated by the TCM in
response to signals sent from the inhibitor switch, overdrive con-
trol switch, vehicle speed and throttle position sensors. The over-
run clutch operation will then be controlled.
TCM TERMINALS AND REFERENCE VALUENBAT0068S02Remarks: Specification data are reference values.
Terminal
No.Wire color Item ConditionJudgement
standard
(Approx.)
20 L/BOverrun clutch
solenoid valve
When overrun clutch solenoid valve operates.Battery volt-
age
When overrun clutch solenoid valve does not
operate.0V
ON BOARD DIAGNOSIS LOGICNBAT0068S03
Diagnostic trouble code Malfunction is detected when ... Check item (Possible cause)
: O/R CLTCH SOL/CIRCTCM detects an improper voltage drop
when it tries to operate the solenoid
valve.IHarness or connectors
(The solenoid circuit is open or shorted.)
IOverrun clutch solenoid valve
: P1760
SAT014K
SAT020K
DIAGNOSTIC TROUBLE CODE (DTC) CONFIRMATION
PROCEDURE
NBAT0068S01CAUTION:
Always drive vehicle at a safe speed.
NOTE:
If ªDIAGNOSTIC TROUBLE CODE CONFIRMATION PROCE-
DUREº has been previously conducted, always turn ignition
switch ªOFFº and wait at least 5 seconds before conducting
the next test.
TESTING CONDITION:
Always drive vehicle on a level road to improve accuracy of
test.
After the repair, perform the following procedure to confirm the
malfunction is eliminated.
With CONSULT-II
1) Turn ignition switch ªONº and select ªDATA MONITORº mode
for ªENGINEº with CONSULT-II.
2) Start engine.
3) Accelerate vehicle to a speed of more than 10 km/h (6MPH)
in ªDº position (OD ªONº).
4) Release accelerator pedal completely in ªDº position (OD
ªOFFº).
GI
MA
EM
LC
EC
FE
TF
PD
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
DTC P1760 OVERRUN CLUTCH SOLENOID VALVE
Description
AT-185