Nissan Tiida C11. Instruction — part 1338
A/T 4TH GEAR FUNCTION
TM-403
< COMPONENT DIAGNOSIS >
[TYPE 2 (4AT: RE4F03B)]
C
E
F
G
H
I
J
K
L
M
A
B
TM
N
O
P
A/T 4TH GEAR FUNCTION
Description
INFOID:0000000001713091
• This malfunction will not be detected while the OD OFF indicator lamp is indicating another self-diagnosis
malfunction.
• This malfunction is detected when the A/T does not shift into fourth gear position or the torque converter
clutch does not lock up as instructed by the TCM. This is not caused by electrical malfunction (circuits open
or shorted) but by mechanical malfunction such as control valve sticking, improper solenoid valve operation,
malfunctioning oil pump or torque converter clutch, etc.
CONSULT-III REFERENCE VALUE IN DATA MONITOR MODE
Remarks: Specification data are reference values.
On Board Diagnosis Logic
INFOID:0000000001713092
• Diagnostic trouble code “A/T 4TH GR FNCTN” with CONSULT-III is detected when A/T cannot be shifted to
the 4th gear position even if electrical circuit is good.
• This diagnosis monitors actual gear position by checking the torque converter slip ratio calculated by TCM
as follows:
Torque converter slip ratio = A x C/B
A: Output shaft revolution signal from revolution sensor
B: Engine speed signal from ECM
C: Gear ratio determined as gear position which TCM supposes
If the actual gear position is much lower than the position (4th) supposed by TCM, the slip ratio will be much
less than normal. In case the ratio does not reach the specified value, TCM judges this diagnosis malfunc-
tion.
This malfunction will be caused when shift solenoid valve B is stuck closed.
• Gear positions supposed by TCM are as follows.
In case of gear position with no malfunctions: 1, 2, 3 and 4 positions
In case of gear position with shift solenoid valve A stuck open: 2, 2, 3 and 3* positions
In case of gear position with shift solenoid valve B stuck closed: 1, 2, 2 and 1* positions to each gear position
above
*: “A/T 4TH GR FNCTN” is detected.
Possible Cause
INFOID:0000000001713093
• Shift solenoid valve A
• Shift solenoid valve B
• Line pressure solenoid valve
• Each clutch
• Hydraulic control circuit
DTC Confirmation Procedure
INFOID:0000000001713094
CAUTION:
• Always drive vehicle at a safe speed.
• If performing this “DTC Confirmation Procedure” again, always turn ignition switch OFF and wait at
least 10 seconds before continuing.
After the repair, perform the following procedure to confirm the malfunction is eliminated.
WITH CONSULT-III
1.
Start engine and select “DATA MONITOR” mode for “TRANSMISSION” with CONSULT-III.
2.
Touch “START”.
Gear position
1
2
3
4
Shift solenoid valve A
ON (Closed)
OFF (Open)
OFF (Open)
ON (Closed)
Shift solenoid valve B
ON (Closed)
ON (Closed)
OFF (Open)
OFF (Open)
Item name
Condition
Display value (Approx.)
LINE PRES DTY
Small throttle opening (Low line pressure)
⇔
Large
throttle opening (High line pressure)
0%
⇔
94%
TM-404
< COMPONENT DIAGNOSIS >
[TYPE 2 (4AT: RE4F03B)]
A/T 4TH GEAR FUNCTION
3.
Make sure that output voltage of A/T fluid temperature sensor is within the range below.
FLUID TEMP SE: 0.4 - 1.5V
If out of range, drive the vehicle to decrease the voltage (warm up the fluid) or stop engine to increase the
voltage (cool down the fluid).
4.
Select “4TH GR FNCTN P0734” of “DTC WORK SUPPORT” mode for “TRANSMISSION” with CON-
SULT-III and touch “START”.
5.
Accelerate vehicle to 55 to 65 km/h (34 to 40 MPH) under the following conditions and release the accel-
erator pedal completely.
THROTTLE POSI: Less than 5.5/8 (at all times during step 4)
SLCT LVR POSI: “D” position
-
Make sure that “GEAR” shows “3” after releasing pedal.
6.
Depress accelerator pedal steadily with 1.0/8 - 2.0/8 of “THROTTLE POSI” from a speed of 55 to 65 km/h
(34 to 40 MPH) until “TESTING” has turned to “STOP VEHICLE” or “COMPLETED”. (It will take approxi-
mately 3 seconds.)
If the check result NG appears on CONSULT-III screen, go to
If “STOP VEHICLE” appears on CONSULT-III screen, go to following step.
-
Make sure that “GEAR” shows “4” when depressing accelerator pedal with 1.0/8 - 2.0/8 of
“THROTTLE POSI”.
-
If “TESTING” does not appear on CONSULT-III for a long time, select “SELF-DIAG RESULTS” for
“A/T”. In case a DTC other than “A/T 4TH GR FNCTN” is shown, refer to
XX-XX, "*****"
.
7.
Stop vehicle.
8.
Follow the instruction displayed. (Check for normal shifting referring to the table below.)
9.
Make sure that “OK” is displayed. (If “NG” is displayed, refer to “Diagnostic Procedure”.)
Refer to
Refer to
XX-XX, "*****"
.
Diagnosis Procedure
INFOID:0000000001713095
1.
CHECK SHIFT-UP (D
3
TO D
4
)
During
XX-XX, "*****"
.
Does A/T shift from D
3
to D
4
at the specified speed?
YES
>> GO TO 11.
NO
>> GO TO 2.
2.
CHECK LINE PRESSURE
Perform line pressure test. Refer to
XX-XX, "*****"
.
OK or NG
OK
>> GO TO 3.
NG
>> GO TO 7.
3.
CHECK VALVE RESISTANCE
1.
Remove control valve assembly. Refer to
XX-XX, "*****"
.
-
Shift solenoid valve A
-
Shift solenoid valve B
Vehicle condition
Gear on actual transmission shift pattern when screen is changed to 1
→
2
→
3
→
4
No malfunction exists
1
→
2
→
3
→
4
Malfunction for “A/T 4TH GR FNCTN” exists.
2
→
2
→
3
→
3
1
→
2
→
2
→
1
SCIA7190E
A/T 4TH GEAR FUNCTION
TM-405
< COMPONENT DIAGNOSIS >
[TYPE 2 (4AT: RE4F03B)]
C
E
F
G
H
I
J
K
L
M
A
B
TM
N
O
P
2.
Check resistance between terminal cord assembly harness con-
nector terminals and ground.
OK or NG
OK
>> GO TO 4.
NG
>> Replace solenoid valve assembly.
4.
CHECK VALVE OPERATION
1.
Remove control valve assembly. Refer to
XX-XX, "*****"
.
-
Shift solenoid valve A
-
Shift solenoid valve B
2.
Check solenoid valve by listening for its operating sound while
applying battery voltage to the terminals and ground.
OK or NG
OK
>> GO TO 5.
NG
>> Replace solenoid valve assembly.
5.
CHECK CONTROL VALVE
1.
Disassemble control valve assembly. Refer to
XX-XX, "*****"
.
2.
Check to ensure that:
-
Valve, sleeve and plug slide along valve bore under their own weight.
-
Valve, sleeve and plug are free from burrs, dents and scratches.
-
Control valve springs are free from damage, deformation and fatigue.
-
Hydraulic line is free from obstacles.
OK or NG
Solenoid valve
Terminal
Resistance
(Approx.)
Shift solenoid valve A
2
Ground
20 - 30
Ω
Shift solenoid valve B
1
5 - 20
Ω
SCIA3594E
SCIA3595E
TM-406
< COMPONENT DIAGNOSIS >
[TYPE 2 (4AT: RE4F03B)]
A/T 4TH GEAR FUNCTION
OK
>> GO TO 6.
NG
>> Repair control valve.
6.
CHECK SHIFT-UP (D
3
TO D
4
)
During
XX-XX, "*****"
.
Does A/T shift from D
3
to D
4
at the specified speed?
YES
>> GO TO 11.
NO
>> Check control valve again. Repair or replace control
valve assembly.
7.
CHECK VALVE RESISTANCE
1.
Remove control valve assembly. Refer to
XX-XX, "*****"
.
-
Line pressure solenoid valves
2.
Check resistance between terminal cord assembly harness con-
nector terminal and ground.
OK or NG
OK
>> GO TO 8.
NG
>> Replace solenoid valve assembly.
8.
CHECK VALVE OPERATION
1.
Remove control valve assembly. Refer to
XX-XX, "*****"
.
-
Line pressure solenoid valves
2.
Check solenoid valve by listening for its operating sound while
applying battery voltage to the terminal and ground.
OK or NG
OK
>> GO TO 9.
NG
>> Replace solenoid valve assembly.
9.
CHECK CONTROL VALVE
1.
Disassemble control valve assembly. Refer to
XX-XX, "*****"
.
2.
Check line pressure circuit valves for sticking.
-
Pilot valve
-
Shift solenoid valve A
-
Shift solenoid valve B
OK or NG
OK
>> GO TO 10.
NG
>> Repair or replace control valve.
10.
CHECK SHIFT-UP (D
3
TO D
4
)
SCIA7190E
Solenoid valve
Terminal
Resistance
(Approx.)
Line pressure solenoid valve
4
Ground
2.5 - 5
Ω
SCIA4951E
SCIA3275E
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