Nissan Frontier. Manual — part 1254
1ST POSITION SWITCH
TM-227
< DTC/CIRCUIT DIAGNOSIS >
[5AT: RE5R05A]
C
E
F
G
H
I
J
K
L
M
A
B
TM
N
O
P
3. Check continuity between A/T shift selector connector terminals.
OK or NG
OK
>> GO TO 4.
NG
>> Repair or replace A/T shift selector assembly.
4.
DETECT MALFUNCTIONING ITEM
Check the following. If any items are damaged, repair or replace damaged parts.
• Harness for short or open between combination meter connector terminal 18 and A/T shift selector connec-
tor terminal 9.
• Harness for short or open between A/T shift selector connector terminal 10 and ground.
OK or NG
OK
>> GO TO 5.
NG
>> Repair or replace damaged parts.
5.
CHECK COMBINATION METER
Check the combination meter. Refer to
MWI-25, "Diagnosis Description"
.
OK or NG
OK
>> INSPECTION END
NO
>> Repair or replace damaged parts.
Item
Connector
Terminal
Condition
Continuity
1st position
switch
M156
9 - 10
When setting se-
lector lever to “1”
position.
Yes
When setting se-
lector lever to other
positions.
No
JSDIA1484ZZ
TM-228
< ECU DIAGNOSIS INFORMATION >
[5AT: RE5R05A]
TCM
ECU DIAGNOSIS INFORMATION
TCM
Reference Value
INFOID:0000000009480651
VALUES ON THE DIAGNOSIS TOOL
• The CONSULT electrically displays shift timing and lock-up timing (that is, operation timing of each sole-
noid).
Check for time difference between actual shift timing and the CONSULT display. If the difference is notice-
able, mechanical parts (except solenoids, sensors, etc.) may be malfunctioning. Check mechanical parts
using applicable diagnostic procedures.
• Shift schedule (which implies gear position) displayed on CONSULT and that indicated in Service Manual
may differ slightly. This occurs because of the following reasons:
- Actual shift schedule has more or less tolerance or allowance,
- Shift schedule indicated in Service Manual refers to the point where shifts start, and
- Gear position displayed on CONSULT indicates the point where shifts are completed.
• Display of solenoid valves on CONSULT changes at the start of shifting, while gear position is displayed
upon completion of shifting (which is computed by TCM).
NOTE:
The following table includes information (items) inapplicable to this vehicle. For information (items) applicable
to this vehicle, refer to CONSULT display items.
Item name
Condition
Display value (Approx.)
ATF TEMP SE 1
0
°C (32° F) - 20°C (68°F) - 80°C (176°F)
3.3 - 2.7 - 0.9 V
TCC SOLENOID
When perform slip lock-up
0.2 - 0.4 A
When perform lock-up
0.4 - 0.6 A
SLCT LVR POSI
Selector lever in “N”,“P” positions.
N/P
Selector lever in “R” position.
R
Selector lever in “D” position.
D
Selector lever in “3” position.
3
Selector lever in “2” position.
2
Selector lever in “1” position.
1
VHCL/S SE-A/T
During driving
Approximately matches the
speedometer reading.
ENGINE SPEED
Engine running
Closely matches the tachometer
reading.
LINE PRES SOL
During driving
0.2 - 0.6 A
INPUT SPEED
During driving (lock-up ON)
Approximately matches the en-
gine speed.
VHCL/S SE-MTR
During driving
Approximately matches the
speedometer reading.
ATF PRES SW 2
Low coast brake engaged. Refer to
ON
Low coast brake disengaged. Refer to
OFF
I/C SOLENOID
Input clutch disengaged. Refer to
0.6 - 0.8 A
Input clutch engaged. Refer to
0 - 0.05 A
FR/B SOLENOID
0.6 - 0.8 A
Front brake disengaged. Refer to
0 - 0.05 A
D/C SOLENOID
Direct clutch disengaged. Refer to
0.6 - 0.8 A
Direct clutch engaged. Refer to
0 - 0.05 A
HLR/C SOL
High and low reverse clutch disengaged. Refer to
0.6 - 0.8 A
High and low reverse clutch engaged. Refer to
0 - 0.05 A
TCM
TM-229
< ECU DIAGNOSIS INFORMATION >
[5AT: RE5R05A]
C
E
F
G
H
I
J
K
L
M
A
B
TM
N
O
P
TERMINAL LAYOUT
PHYSICAL VALUES
Data are reference value and are measured between each terminal and ground.
ON OFF SOL
Low coast brake engaged. Refer to
ON
Low coast brake disengaged. Refer to
OFF
STARTER RELAY
Selector lever in “N”,“P” positions.
ON
Selector lever in other position.
OFF
ACCELE POSI
Released accelerator pedal.
0.0/8
Fully depressed accelerator pedal.
8/8
CLSD THL POS
Released accelerator pedal.
ON
Fully depressed accelerator pedal.
OFF
W/O THL POS
Fully depressed accelerator pedal.
ON
Released accelerator pedal.
OFF
OD CONT SW
Releasing overdrive control switch
OFF
Holding overdrive control switch
ON
1 POSITION SW
When setting selector lever to “1” position.
ON
When setting selector lever to other positions.
OFF
BRAKESW
Depressed brake pedal.
ON
Released brake pedal.
OFF
Item name
Condition
Display value (Approx.)
AWDIA0348ZZ
Terminal
No.
Wire
color
Item
Condition
Data (Approx.)
1
R/B
Power supply
(Memory back-up)
Always
Battery voltage
2
R/B
Power supply
(Memory back-up)
Always
Battery voltage
3
L
CAN H
—
—
4
V
K-line (CONSULT
signal)
The terminal is connected to the data link connector for CONSULT.
—
5
B
Ground
Always
0 V
6
W/G
Power supply
—
Battery voltage
—
0 V
7
LG
Back-up lamp re-
lay
Selector lever in “R” position.
0 V
Selector lever in other positions.
Battery voltage
8
P
CAN L
—
—
TM-230
< ECU DIAGNOSIS INFORMATION >
[5AT: RE5R05A]
TCM
Fail-Safe
INFOID:0000000009480652
The TCM has an electrical fail-safe mode. This mode makes it possible to operate even if there is an error in a
main electronic control input/output signal circuit. In fail-safe mode the transmission is fixed in 2GR, 4GR or
5GR (depending on the breakdown position), so the customer should feel “slipping” or “poor acceleration”.
Even when the electronic circuits are normal, under special conditions (for example, when slamming on the
brake with the wheels spinning drastically and stopping the tire rotation), the transmission can go into fail-safe
mode. If this happens, switch “OFF” the ignition switch for 10 seconds, then switch it “ON” again to return to
the normal shift pattern. Therefore, the customer's vehicle has returned to normal, so handle according to the
“diagnostics flow” (Refer to
TM-129, "Diagnostic Work Sheet"
FAIL-SAFE FUNCTION
If any malfunction occurs in a sensor or solenoid, this function controls the A/T to mark driving possible.
Output Speed Sensor
• Signals are input from two systems - from output speed sensor installed on the transmission and from com-
bination meter so normal driving is possible even if there is a malfunction in one of the systems. And if output
speed has unusual cases, 5GR is prohibited.
Accelerator Pedal Position Sensor
• If there is a malfunction in one of the systems, the accelerator opening angle is controlled by ECM according
to a pre-determined accelerator angle to make driving possible. And if there are malfunctions in tow sys-
tems, the engine speed is fixed by ECM to a pre-determined engine speed to make driving possible.
Throttle Position Sensor
• If there is a malfunction in one of the systems, the accelerator opening angle is controlled by ECM according
to a pre-determined accelerator angle to make driving possible. And if there are malfunctions in tow sys-
tems, the accelerator opening angle is controlled by the idle signal sent from the ECM which is based on
input indicating either idle condition or off-idle condition (pre-determined accelerator opening) in order to
make driving possible.
Transmission Range Switch
• In the unlikely event that a malfunction signal enters the TCM, the position indicator is switched “OFF”, the
starter relay is switched “OFF” (starter starting is disabled), the back-up lamp relay switched “OFF” (back-up
lamp is OFF) and the position is fixed to the “D” range to make driving possible.
Starter Relay
• The starter relay is switched “OFF”. (Starter starting is disabled.)
Interlock
• If there is an interlock judgment malfunction, the transmission is fixed in 2GR to make driving possible.
NOTE:
When the vehicle is driven fixed in 2GR, a input speed sensor malfunction is displayed, but this is
not a input speed sensor malfunction.
• When interlock is detected at the 3GR or more, it is locked at the 2GR.
1st Engine Braking
• When there is an 1st engine brake judgment malfunction, the low coast brake solenoid is switched “OFF” to
avoid the engine brake operation.
Line Pressure Solenoid
• The solenoid is switched “OFF” and the line pressure is set to the maximum hydraulic pressure to make driv-
ing possible.
Torque Converter Clutch Solenoid
• The solenoid is switched “OFF” to release the lock-up.
Low Coast Brake Solenoid
9
R
Starter relay
Selector lever in “N”, “P” positions.
Battery voltage
Selector lever in other positions.
0 V
10
B
Ground
Always
0 V
Terminal
No.
Wire
color
Item
Condition
Data (Approx.)
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст