Infiniti QX56 (Z62). Manual — part 1306
P0775 PRESSURE CONTROL SOLENOID B
TM-133
< DTC/CIRCUIT DIAGNOSIS >
[7AT: RE7R01B]
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B
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P0775 PRESSURE CONTROL SOLENOID B
DTC Logic
INFOID:0000000006226845
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
CAUTION:
Always drive vehicle at a safe speed.
1.
PRECONDITIONING
If “DTC CONFIRMATION PROCEDURE” is previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before performing 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:0000000006226846
1.
CHECK INTERMITTENT INCIDENT
GI-40, "Intermittent Incident"
.
Is the inspection result normal?
YES
>> Replace the control valve & TCM. Refer to
.
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
TM-134
< DTC/CIRCUIT DIAGNOSIS >
[7AT: RE7R01B]
P0780 SHIFT
P0780 SHIFT
Description
INFOID:0000000006226847
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:0000000006226848
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
CAUTION:
• “
” must be performed before starting “DTC CONFIRMATION PROCE-
DURE”.
• Never perform “DTC CONFIRMATION PROCEDURE” before completing the repair, which may cause
secondary malfunction.
• Always drive vehicle at a safe speed.
1.
PRECONDITIONING
If “DTC CONFIRMATION PROCEDURE” is previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before performing 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:0000000006226849
1.
DETECT MALFUNCTIONING ITEM
Disassemble the A/T assembly to check component parts. Refer to
.
NOTE:
DTC
Trouble diagnosis name
DTC is detected if...
Possible cause
P0780
Shift Error
• When shifting from 3GR to
4GR with the selector lever in
“D” position, the gear ratio
does not shift to 1.412 (gear
ratio of 4th).
• When shifting from 5GR to
6GR or 6GR to 7GR, the en-
gine speed exceeds the pre-
scribed speed.
• 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
P0780 SHIFT
TM-135
< DTC/CIRCUIT DIAGNOSIS >
[7AT: RE7R01B]
C
E
F
G
H
I
J
K
L
M
A
B
TM
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Check the component parts, referring to “Possible cause” in “DTC DETECTION LOGIC”. Refer to
.
Is the inspection result normal?
YES
>> Replace the control valve & TCM. Refer to
.
NO
>> Repair or replace damaged parts.
TM-136
< DTC/CIRCUIT DIAGNOSIS >
[7AT: RE7R01B]
P0795 PRESSURE CONTROL SOLENOID C
P0795 PRESSURE CONTROL SOLENOID C
DTC Logic
INFOID:0000000006226850
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
CAUTION:
Always drive vehicle at a safe speed.
1.
PRECONDITIONING
If “DTC CONFIRMATION PROCEDURE” is previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before performing 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:0000000006226851
1.
CHECK INTERMITTENT INCIDENT
GI-40, "Intermittent Incident"
Is the inspection result normal?
YES
>> Replace the control valve & TCM. Refer to
.
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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