Infiniti QX4 (R50). Manual — part 44
Wiring Diagram — AT — SSV/B
NBAT0198
MAT739A
GI
MA
EM
LC
EC
FE
TF
PD
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
DTC P0755 SHIFT SOLENOID VALVE B
Wiring Diagram — AT — SSV/B
AT-173
Diagnostic Procedure
NBAT0064
1
CHECK VALVE RESISTANCE
1. Turn ignition switch to “OFF” position.
2. Disconnect terminal cord assembly connector on the right side of transfer assembly.
3. Check resistance between terminal 2 and ground.
SAT166J
Is resistance approx. 20 - 40
Ω
?
Yes
©
GO TO 3.
No
©
GO TO 2.
2
CHECK VALVE OPERATION
1. Remove control valve assembly.
Refer to AT-273.
2. Check the following items:
I
Shift solenoid valve B
Refer to “Component Inspection”, AT-175.
I
Harness of terminal cord assembly for short or open
OK or NG
OK
©
GO TO 3.
NG
©
Repair or replace damaged parts.
3
CHECK POWER SOURCE CIRCUIT
1. Turn ignition switch to “OFF” position.
2. Disconnect TCM harness connector.
3. Check resistance between terminal 2 and TCM harness connector terminal 12. Refer to wiring diagram — AT —
SSV/B.
Continuity should exist.
If OK, check harness for short to ground and short to power.
4. Reinstall any part removed.
Is resistance approx. 0
Ω
?
Yes
©
GO TO 4.
No
©
Repair open circuit or short to ground or short to power in harness or connectors.
4
CHECK DTC
Perform Diagnostic Trouble Code (DTC) confirmation procedure, AT-172.
OK or NG
OK
©
INSPECTION END
NG
©
GO TO 5.
DTC P0755 SHIFT SOLENOID VALVE B
Diagnostic Procedure
AT-174
5
CHECK TCM INSPECTION
1. Perform TCM input/output signal inspection.
2. If NG, recheck TCM pin terminals for damage or loose connection with harness connector.
OK or NG
OK
©
INSPECTION END
NG
©
Repair or replace damaged parts.
SAT651I
Component Inspection
NBAT0065
SHIFT SOLENOID VALVE B
NBAT0065S01
I
For removal, refer to AT-273.
Resistance Check
NBAT0065S0101
I
Check resistance between terminal 2 and ground.
Solenoid valve
Terminal No.
Resistance (Approx.)
Shift solenoid valve B
2
Ground
20 - 40
Ω
SAT650I
Operation Check
NBAT0065S0102
I
Check solenoid valve by listening for its operating sound while
applying battery voltage to the terminal 2 and ground.
GI
MA
EM
LC
EC
FE
TF
PD
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
DTC P0755 SHIFT SOLENOID VALVE B
Diagnostic Procedure (Cont’d)
AT-175
SAT142K
Description
NBAT0066
I
Throttle position sensor
The throttle position sensor detects the throttle valve position
and sends a signal to the TCM.
I
Throttle 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
NBAT0066S02
Remarks: Specification data are reference values.
Monitor item
Condition
Specification
Throttle position sensor
Fully-closed throttle
Approximately 0.5V
Fully-open throttle
Approximately 4V
TCM TERMINALS AND REFERENCE VALUE
NBAT0066S03
Remarks: Specification data are reference values.
Terminal
No.
Wire color
Item
Condition
Judgement
standard
(Approx.)
16
OR/W
Closed throttle
position switch
(in throttle
position switch)
When releasing accelerator pedal after warm-
ing up engine.
[Refer to “Preparation”, “TCM SELF-DIAG-
NOSTIC PROCEDURE (No Tools)”, AT-46.]
Battery volt-
age
When depressing accelerator pedal after
warming up engine.
[Refer to “Preparation”, “TCM SELF-DIAG-
NOSTIC PROCEDURE (No Tools)”, AT-46.]
0V
17
OR/B
Wide 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/B
Throttle position
sensor
(Power source)
Ignition switch “ON”.
4.5 - 5.5V
Ignition switch “OFF”.
0V
41
P
Throttle position
sensor
When 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
B
Throttle position
sensor
(Ground)
—
—
DTC P1705 THROTTLE POSITION SENSOR
Description
AT-176
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