Nissan Frontier D22. Manual — part 69
TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
AT-245
[RE4R01A]
D
E
F
G
H
I
J
K
L
M
A
B
AT
*1: These terminals are connected to the ECM.
*2: These terminals are connected to the Data link connector for CONSULT-II.
*3: VG33ER only.
40
G/B
Vehicle speed
sensor
When moving vehicle at 2 to 3 km/h
(1 to 2 MPH) for 1m (3 ft) or more.
Voltage varies
between less
than 1V and
more than 4.5V
41
OR/L
Throttle position
sensor
When depressing accelerator pedal
slowly after warming up engine (Volt-
age rises gradually in response to
throttle position).
Fully-closed
throttle:
0.5V - 0.7V
Fully-open throt-
tle:
4V
42
BR
Throttle position
sensor (Ground)
—
0V
45*3
BR/R
Stop lamp switch
—
When brake pedal is depressed.
Battery voltage
When brake pedal is released.
0V
47
R/B
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
48
B/Y
Ground (Same as
No. 25)
—
—
0V
Termi-
nal No.
Wire color
Item
Condition
Judgement stan-
dard (Approx.)
AT-246
[RE4R01A]
TROUBLE DIAGNOSIS FOR POWER SUPPLY
TROUBLE DIAGNOSIS FOR POWER SUPPLY
PFP:00000
Wiring Diagram — AT — MAIN
ECS007M2
WCWA0146E
TROUBLE DIAGNOSIS FOR POWER SUPPLY
AT-247
[RE4R01A]
D
E
F
G
H
I
J
K
L
M
A
B
AT
TCM TERMINALS AND REFERENCE VALUE
Remarks: Specification data are reference values.
Diagnostic Procedure
ECS007M3
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 harness connector M78 terminal
28 and ground.
OK or NG
OK
>> GO TO 2.
NG
>> Check the following items:
●
Harness for open or short between fuse block J/B harness connectors M26, M27 and TCM har-
ness connectors M77, M78
●
Ignition switch and fuse
Refer to
.
Terminal
No.
Wire color
Item
Condition
Judgement stan-
dard (Approx.)
10
W/R
Power source
or
When turning ignition switch to ON
Battery voltage
When turning ignition switch to OFF
0V
19
W/R
Power source
(Same as No. 10)
Same as No. 10
25
B/Y
Ground
or
When turning ignition switch to ON
0V
When turning ignition switch to OFF
0V
28
R/Y
Power source
(Memory back-
up)
When turning ignition switch to OFF
Battery voltage
When turning ignition switch to ON
Battery voltage
48
B/Y
Ground (Same
as No. 25)
When turning ignition switch to ON
0V
When turning ignition switch to OFF
0V
Voltage
: Battery voltage
Voltage
: Battery voltage
AAT476A
AT-248
[RE4R01A]
TROUBLE DIAGNOSIS FOR POWER SUPPLY
2.
CHECK TCM GROUND CIRCUIT
1.
Turn ignition switch to OFF position.
2.
Disconnect TCM harness connector.
3.
Check continuity between TCM harness connector M78 termi-
nals (25, 48) and ground.
If OK, check harness for short to ground and short to power.
OK or NG
OK
>> INSPECTION END.
NG
>> Repair open circuit or short to ground or short to power
in harness or connectors.
Continuity should exist.
AAT477A
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст