Nissan Frontier D22. Instruction — part 92
DTC BATT/FLUID TEMP SEN (A/T FLUID TEMP SENSOR CIRCUIT AND TCM
POWER SOURCE)
AT-337
[RE4R01A]
D
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Diagnostic Procedure
ECS007NT
1.
CHECK TCM POWER SOURCE
1.
Turn ignition switch to ON position.
(Do not start engine.)
2.
Check voltage between TCM harness connectors M77, M78 ter-
minals (10, 19, 28) and ground.
3.
Turn ignition switch to OFF position.
4.
Check voltage between TCM terminal 28 and ground.
OK or NG
OK
>> GO TO 2.
NG
>> Check the following items:
●
Harness for short or open between fuse block J/B harness and TCM terminals (10, 19 and 28)
(Main harness)
●
Ignition switch and fuse
Refer to
2.
CHECK A/T FLUID TEMPERATURE SENSOR WITH TERMINAL CORD ASSEMBLY
1.
Turn ignition switch to OFF position.
2.
Disconnect terminal cord assembly connector in engine compartment.
3.
Check resistance between terminals 6 and 7 when A/T is cold
[20
°C (68°F)].
Is resistance approx. 2.5k
Ω?
Yes
>> GO TO 3.
No
>> 1. Remove oil pan.
2. Check the following items:
–
A/T fluid temperature sensor
Refer to
AT-339, "A/T FLUID TEMPERATURE SEN-
–
Harness of terminal cord assembly for short or open
Voltage
: Battery voltage
Voltage
: Battery voltage
AAT476A
AAT502A
AT-338
[RE4R01A]
DTC BATT/FLUID TEMP SEN (A/T FLUID TEMP SENSOR CIRCUIT AND TCM
POWER SOURCE)
3.
CHECK INPUT SIGNAL OF A/T FLUID TEMPERATURE SENSOR
With CONSULT-II
1.
Start engine.
2.
Select “TCM INPUT SIGNALS” in “DATA MONITOR” mode for “A/T” with CONSULT-II.
3.
Read out the value of “FLUID TEMP SE”.
Without CONSULT-II
1.
Start engine.
2.
Check voltage between TCM terminal 47 and ground while
warming up A/T.
OK or NG
OK
>> GO TO 4.
NG
>> Check the following item:
●
Harness for short or open between TCM and terminal
cord assembly (Main harness)
4.
CHECK DTC
Perform Diagnostic Trouble Code (DTC) confirmation procedure. Refer to
CODE (DTC) CONFIRMATION PROCEDURE"
.
OK or NG
OK
>> INSPECTION END.
NG
>>
●
Perform TCM input/output signal inspection.
●
If NG, recheck TCM pin terminals for damage or loose connection with harness connector.
Voltage
Cold [20
°C (68°F)] →
Hot [80
°C (176°F)]
: Approximately 1.5V
→
0.5V
Voltage
:
Cold [20
°C (68°F)] →
Hot [80
°C (176°F)]
: Approximately 1.5V
→
0.5V
SAT614J
AAT503A
DTC BATT/FLUID TEMP SEN (A/T FLUID TEMP SENSOR CIRCUIT AND TCM
POWER SOURCE)
AT-339
[RE4R01A]
D
E
F
G
H
I
J
K
L
M
A
B
AT
Component Inspection
ECS007NU
A/T FLUID TEMPERATURE SENSOR
●
For removal, refer to
●
Check resistance between terminals 6 and 7 while changing
temperature as shown at left.
Temperature
°C (°F)
Resistance (Approx.)
20 (68)
2.5 k
Ω
80 (176)
0.3 k
Ω
AAT485A
AT-340
[RE4R01A]
DTC VEHICLE SPEED SENSOR·MTR
DTC VEHICLE SPEED SENSOR·MTR
PFP:24814
Description
ECS007NV
The vehicle speed sensor·MTR is built into the speedometer assem-
bly. The sensor functions as an auxiliary device to the revolution sen-
sor when it is malfunctioning. The TCM will then use a signal sent
from the vehicle speed sensor·MTR.
TCM TERMINALS AND REFERENCE VALUE
Remarks: Specification data are reference values.
ON BOARD DIAGNOSIS LOGIC
WAT497
Terminal
No.
Wire color
Item
Condition
Judgement stan-
dard (Approx.)
40
G/B
Vehicle speed
sensor
When moving vehicle at 2 to 3 km/h
(1 to 2 MPH) for 1 m (3 ft) or more.
Voltage varies
between less
than 1V and
more than 4.5V
Diagnostic trouble code
Malfunction is detected when ...
Check item
(Possible cause)
: VHCL SPEED SEN·MTR
TCM does not receive the proper voltage
signal from the sensor.
●
Harness or connectors
(The sensor circuit is open or shorted.)
●
Vehicle speed sensor
: 2nd judgement flicker
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