Infiniti FX35, FX50 (S51). Manual — part 1823
P0750 SHIFT SOLENOID A
TM-99
< DTC/CIRCUIT DIAGNOSIS >
[7AT: RE7R01A (VQ35HR)]
C
E
F
G
H
I
J
K
L
M
A
B
TM
N
O
P
NO
>> Repair or replace damaged parts.
TM-100
< DTC/CIRCUIT DIAGNOSIS >
[7AT: RE7R01A (VQ35HR)]
P0775 PRESSURE CONTROL SOLENOID B
P0775 PRESSURE CONTROL SOLENOID B
Description
INFOID:0000000005250078
• The Input clutch solenoid valve is controlled by the TCM in response to signals transmitted from the trans-
mission range switch, output speed sensor and accelerator pedal position sensor. Gears will then be shifted
to the optimum position.
• The Input clutch solenoid valve controls the input clutch control valve in response to a signal transmitted
from the TCM.
DTC Logic
INFOID:0000000005250079
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
CAUTION:
Always drive vehicle at a safe speed.
1.
PRECONDITIONING
If “DTC CONFIRMATION PROCEDURE” has been previously conducted, always turn ignition switch OFF and
wait at least 10 seconds before conducting the next test.
>> GO TO 2.
2.
CHECK DTC DETECTION
With CONSULT-III
1.
Start the engine.
2.
Select “BATTERY VOLT”, “MANU MODE SW”, “GEAR” and “VHCL/S SE-A/T” in “Data Monitor” in
“TRANSMISSION”.
3.
Drive vehicle and maintain the following conditions for 5 seconds or more.
4.
Perform “Self Diagnostic Results” in “TRANSMISSION”.
With GST
Follow the procedure “With CONSULT-III”.
Is “P0775” detected?
YES
>> Go to
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000005250080
1.
CHECK INTERMITTENT INCIDENT
GI-36, "Intermittent Incident"
Is the inspection result normal?
YES
>> Replace A/T assembly. Refer to
(2WD),
(AWD).
NO
>> Repair or replace damaged parts.
DTC
Trouble diagnosis name
DTC is detected if...
Possible cause
P0775
Pressure Control Solenoid B
The input clutch solenoid valve
monitor value is 0.4 A or less
when the input clutch solenoid
valve command value is more
than 0.75 A.
• Harness or connectors
(Solenoid valve circuit is
open or shorted.)
• Input clutch solenoid valve
BATTERY VOLT
: 9 V or more
MANU MODE SW
: ON
GEAR
: 1st
VHCL/S SE-A/T
: 10 km/h (7 MPH) or more
P0780 SHIFT
TM-101
< DTC/CIRCUIT DIAGNOSIS >
[7AT: RE7R01A (VQ35HR)]
C
E
F
G
H
I
J
K
L
M
A
B
TM
N
O
P
P0780 SHIFT
Description
INFOID:0000000005250081
The TCM detects the malfunction of low brake solenoid valve. This is not only caused by electrical malfunction
(circuits open or shorted) but also by mechanical malfunction such as control valve sticking, improper solenoid
valve operation, etc.
DTC Logic
INFOID:0000000005250082
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
CAUTION:
Always drive vehicle at a safe speed.
1.
PRECONDITIONING
If “DTC CONFIRMATION PROCEDURE” has been previously conducted, always turn ignition switch OFF and
wait at least 10 seconds before conducting the next test.
>> GO TO 2.
2.
CHECK DTC DETECTION
With CONSULT-III
1.
Start the engine.
2.
Select “SLCT LVR POSI”, “ACCELE POSI” and “GEAR” in “Data Monitor” in “TRANSMISSION”.
3.
Drive vehicle and maintain the following conditions.
4.
Perform “Self Diagnostic Results” in “TRANSMISSION”.
With GST
Follow the procedure “With CONSULT-III”.
Is “P0780” detected?
YES
>> Go to
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000005250083
1.
CHECK INTERMITTENT INCIDENT
GI-36, "Intermittent Incident"
.
Is the inspection result normal?
YES
>> Replace A/T assembly. Refer to
(AWD).
NO
>> Repair or replace damaged parts.
DTC
Trouble diagnosis name
DTC is detected if...
Possible cause
P0780
Shift Error
• TCM judges that the gear ra-
tio is not switched to that of
4GR (1.412) while shifting
from 3GR to 4GR in “D” posi-
tion.
• TCM judges that the engine
speed is more than the spec-
ified one while shifting from
5GR to 6GR or from 6GR to
7GR in “D” position.
• Anti-interlock solenoid valve
• Low brake solenoid valve
• Hydraulic control circuit
SLCT LVR POSI
: D
ACCELE POSI
: More than 1.0/8
GEAR
: 3rd
→
4th
TM-102
< DTC/CIRCUIT DIAGNOSIS >
[7AT: RE7R01A (VQ35HR)]
P0795 PRESSURE CONTROL SOLENOID C
P0795 PRESSURE CONTROL SOLENOID C
Description
INFOID:0000000005250084
• The front brake solenoid valve is controlled by the TCM in response to signals transmitted from the transmis-
sion range switch, output speed sensor and accelerator pedal position sensor. Gears will then be shifted to
the optimum position.
• The front brake solenoid valve controls the front brake control valve in response to a signal transmitted from
the TCM.
DTC Logic
INFOID:0000000005250085
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
CAUTION:
Always drive vehicle at a safe speed.
1.
PRECONDITIONING
If “DTC CONFIRMATION PROCEDURE” has been previously conducted, always turn ignition switch OFF and
wait at least 10 seconds before conducting the next test.
>> GO TO 2.
2.
CHECK DTC DETECTION
With CONSULT-III
1.
Start the engine.
2.
Select “BATTERY VOLT”, “MANU MODE SW”, “GEAR” and “VHCL/S SE-A/T” in “Data Monitor” in
“TRANSMISSION”.
3.
Drive vehicle and maintain the following conditions for 5 seconds or more.
4.
Perform “Self Diagnostic Results” in “TRANSMISSION”.
With GST
Follow the procedure “With CONSULT-III”.
Is “P0795” detected?
YES
>> Go to
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000005250086
1.
CHECK INTERMITTENT INCIDENT
GI-36, "Intermittent Incident"
Is the inspection result normal?
YES
>> Replace A/T assembly. Refer to
(2WD),
(AWD).
NO
>> Repair or replace damaged parts.
DTC
Trouble diagnosis name
DTC is detected if...
Possible cause
P0795
Pressure Control Solenoid C
The front brake solenoid valve
monitor value is 0.4 A or less
when the front brake solenoid
valve command value is more
than 0.75 A.
• Harness or connectors
(Solenoid valve circuit is
open or shorted.)
• Front brake solenoid valve
BATTERY VOLT
: 9 V or more
MANU MODE SW
: ON
GEAR
: 7th
VHCL/S SE-A/T
: 10 km/h (7 MPH) or more
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