Infiniti QX4 (R50). Manual — part 48
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.
SAT139K
Component Inspection
NBAT0070
OVERRUN CLUTCH SOLENOID VALVE
NBAT0070S01
I
For removal, refer to AT-273.
Resistance Check
NBAT0070S0101
I
Check resistance between terminal 4 and ground.
Solenoid valve
Terminal No.
Resistance (Approx.)
Overrun clutch solenoid valve
4
Ground
20 - 40
Ω
SAT688I
Operation Check
NBAT0070S0102
I
Check solenoid valve by listening for its operating sound while
applying battery voltage to the terminal 4 and ground.
GI
MA
EM
LC
EC
FE
TF
PD
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
DTC P1760 OVERRUN CLUTCH SOLENOID VALVE
Diagnostic Procedure (Cont’d)
AT-189
SAT342HA
Description
NBAT0172
The A/T fluid temperature sensor detects the A/T fluid temperature
and sends a signal to the TCM.
SAT021J
CONSULT-II REFERENCE VALUE IN DATA MONITOR
MODE
NBAT0172S02
Remarks: Specification data are reference values.
Monitor item
Condition
Specification
A/T fluid tempera-
ture
sensor
Cold [20°C (68°F)]
"
Hot [80°C (176°F)]
Approximately 1.5V
"
Approximately 0.5V
Approximately 2.5 k
Ω
"
Approximately 0.3 k
Ω
TCM TERMINALS AND REFERENCE VALUE
NBAT0172S03
Remarks: Specification data are reference values.
Terminal
No.
Wire color
Item
Condition
Judgement
standard
(Approx.)
10
W/R
Power source
When turning ignition switch to “ON”.
Battery volt-
age
When turning ignition switch to “OFF”.
0V
19
W/R
Power source
Same as No. 10
28
R/Y
Power source
(Memory back-up)
or
When turning ignition switch to “OFF”.
Battery volt-
age
When turning ignition switch to “ON”.
Battery volt-
age
42
B
Throttle position
sensor
(Ground)
—
0V
47
R
A/T fluid tempera-
ture sensor
When ATF temperature is 20°C (68°F).
1.5V
When ATF temperature is 80°C (176°F).
0.5V
DTC BATT/FLUID TEMP SEN (A/T FLUID TEMP SENSOR CIRCUIT AND TCM
POWER SOURCE)
Description
AT-190
ON BOARD DIAGNOSIS LOGIC
NBAT0172S04
Diagnostic trouble code
Malfunction is detected when ...
Check item (Possible cause)
: BATT/FLUID TEMP SEN
TCM receives an excessively low or high
voltage from the sensor.
I
Harness or connectors
(The sensor circuit is open or shorted.)
I
A/T fluid temperature sensor
: 8th judgement flicker
SAT014K
SAT971J
DIAGNOSTIC TROUBLE CODE (DTC) CONFIRMATION
PROCEDURE
NBAT0172S01
After the repair, perform the following procedure to confirm the
malfunction is eliminated.
With CONSULT-II
1)
Start engine.
2)
Select “DATA MONITOR” mode for “A/T” with CONSULT-II.
3)
Drive vehicle under the following conditions:
Selector lever in “D” position, vehicle speed higher than 20
km/h (12 MPH).
SAT674I
No Tools
1)
Start engine.
2)
Drive vehicle under the following conditions:
Selector lever in “D” position, vehicle speed higher than 20
km/h (12 MPH).
3)
Perform self-diagnosis.
Refer to TCM SELF-DIAGNOSTIC PROCEDURE (No Tools),
AT-46.
GI
MA
EM
LC
EC
FE
TF
PD
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
DTC BATT/FLUID TEMP SEN (A/T FLUID TEMP SENSOR CIRCUIT AND TCM
POWER SOURCE)
Description (Cont’d)
AT-191
Wiring Diagram — AT — BA/FTS
NBAT0201
MAT916A
DTC BATT/FLUID TEMP SEN (A/T FLUID TEMP SENSOR CIRCUIT AND TCM
POWER SOURCE)
Wiring Diagram — AT — BA/FTS
AT-192
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