Nissan Pathfinder (2007 year). Manual — part 23
DTC P1772 LOW COAST BRAKE SOLENOID VALVE
AT-155
D
E
F
G
H
I
J
K
L
M
A
B
AT
2007 Pathfinder
DTC P1772 LOW COAST BRAKE SOLENOID VALVE
PFP:31940
Description
ECS00EJQ
Low coast brake solenoid valve is turned “ON” or “OFF” by the TCM in response to signals sent from the PNP
switch, vehicle speed sensor and accelerator pedal position sensor (throttle position sensor). Gears will then
be shifted to the optimum position.
CONSULT-II Reference Value
ECS00EJR
On Board Diagnosis Logic
ECS00EJS
●
This is an OBD-II self-diagnostic item.
●
Diagnostic trouble code “P1772 LC/B SOLENOID/CIRC” with CONSULT-II or 7th judgement flicker with-
out CONSULT-II is detected when TCM detects an improper voltage drop when it tries to operate the sole-
noid valve.
Possible Cause
ECS00EJT
●
Harness or connectors
(The solenoid circuit is open or shorted.)
●
Low coast brake solenoid valve
DTC Confirmation Procedure
ECS00EJU
NOTE:
If “DTC Confirmation Procedure” has been previously performed, always turn ignition switch “OFF”
and wait at least 10 seconds before performing the next test.
After the repair, perform the following procedure to confirm the malfunction is eliminated.
WITH CONSULT-II
1.
Turn ignition switch “ON”. (Do not start engine.)
2.
Select “DATA MONITOR” mode for “ENGINE” with CONSULT-II.
3.
Start engine.
4.
Drive vehicle and maintain the following conditions for at least 5
consecutive seconds.
Selector lever: “1” or “2”
Gear position: “1st” or “2nd” gear (LC/B ON/OFF)
5.
If DTC is detected, go to
AT-156, "Diagnostic Procedure"
WITH GST
Follow the procedure “WITH CONSULT-II”.
Item name
Condition
Display value
ON OFF SOL
Low coast brake engaged. Refer to
.
ON
Low coast brake disengaged. Refer to
.
OFF
BCIA0031E
AT-156
DTC P1772 LOW COAST BRAKE SOLENOID VALVE
2007 Pathfinder
Diagnostic Procedure
ECS00EJV
1.
CHECK INPUT SIGNAL
With CONSULT-II
1.
Turn ignition switch ON.
2.
Select “SELECTION FROM MENU” in “DATA MONITOR” mode
for “A/T” with CONSULT-II.
3.
Start the engine.
4.
Read out the value of “ON OFF SOL” while driving.
OK or NG
OK
>> GO TO 4.
NG
>> GO TO 2.
2.
CHECK TCM POWER SUPPLY AND GROUND CIRCUIT
Check TCM power supply and ground circuit. Refer to
AT-167, "MAIN POWER SUPPLY AND GROUND CIR-
.
OK or NG
OK
>> GO TO 3.
NG
>> Repair or replace damaged parts.
3.
DETECT MALFUNCTIONING ITEM
Check the following.
●
The A/T assembly harness connector pin terminals for damage or loose connection with harness connec-
tor.
OK or NG
OK
>> Replace the control valve with TCM. Refer to
AT-227, "Control Valve With TCM and A/T Fluid
.
NG
>> Repair or replace damaged parts.
4.
CHECK DTC
Perform “DTC Confirmation Procedure”.
●
Refer to
AT-155, "DTC Confirmation Procedure"
OK or NG
OK
>> INSPECTION END
NG
>> GO TO 2.
SCIA4794E
DTC P1774 LOW COAST BRAKE SOLENOID VALVE FUNCTION
AT-157
D
E
F
G
H
I
J
K
L
M
A
B
AT
2007 Pathfinder
DTC P1774 LOW COAST BRAKE SOLENOID VALVE FUNCTION
PFP:31940
Description
ECS00EJW
●
Low coast brake solenoid valve is turned “ON” or “OFF” by the TCM in response to signals sent from the
PNP switch, vehicle speed sensor and accelerator pedal position sensor (throttle position sensor). Gears
will then be shifted to the optimum position.
●
This is not only caused by electrical malfunction (circuits open or shorted) but also by mechanical mal-
function such as control valve sticking, improper solenoid valve operation.
CONSULT-II Reference Value
ECS00EJX
On Board Diagnosis Logic
ECS00EJY
●
This is an OBD-II self-diagnostic item.
●
Diagnostic trouble code “P1774 LC/B SOLENOID FNCT” with CONSULT-II or 7th judgement flicker with-
out CONSULT-II is detected under the following conditions.
–
When TCM detects that actual gear ratio is irregular, and relation between gear position and condition of
ATF pressure switch 2 is irregular during depressing accelerator pedal. (Other than during shift change)
–
When TCM detects that relation between gear position and condition of ATF pressure switch 2 is irregular
during releasing accelerator pedal. (Other than during shift change)
Possible Cause
ECS00EJZ
●
Harness or connectors
(The solenoid and switch circuits are open or shorted.)
●
Low coast brake solenoid valve
●
ATF pressure switch 2
DTC Confirmation Procedure
ECS00EK0
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
If “DTC Confirmation Procedure” has been previously performed, always turn ignition switch “OFF”
and wait at least 10 seconds before performing the next test.
After the repair, perform the following procedure to confirm the malfunction is eliminated.
WITH CONSULT-II
1.
Start engine.
2.
Accelerate vehicle to maintain the following conditions.
Selector lever: “1” or “2” position
Gear position: “1st” or “2nd” gear (LC/B ON/OFF)
3.
Perform step “2” again.
4.
Turn ignition switch “OFF”, then perform step “1” to “3” again.
5.
Check “SELF-DIAG RESULTS” mode for “A/T” with CONSULT-
II. If DTC (P1774) is detected, refer to
If DTC (P1772) is detected, go to
WITH GST
Follow the procedure “WITH CONSULT-II”.
Item name
Condition
Display value
ON OFF SOL
Low coast brake engaged. Refer to
.
ON
Low coast brake disengaged. Refer to
.
OFF
ATF PRES SW 2
Low coast brake engaged. Refer to
.
ON
Low coast brake disengaged. Refer to
.
OFF
BCIA0031E
AT-158
DTC P1774 LOW COAST BRAKE SOLENOID VALVE FUNCTION
2007 Pathfinder
Diagnostic Procedure
ECS00EK1
1.
CHECK INPUT SIGNALS
With CONSULT-II
1.
Start the engine.
2.
Select “SELECTION FROM MENU” in “DATA MONITOR” mode
for “A/T” with CONSULT-II.
3.
Drive vehicle in the “1” or “2” position (1
1
or 2
2
” gear), and con-
firm the ON/OFF actuation of the “ATF PRES SW 2” and “ON
OFF SOL”.
OK or NG
OK
>> GO TO 4.
NG
>> GO TO 2.
2.
CHECK TCM POWER SUPPLY AND GROUND CIRCUIT
Check TCM power supply and ground circuit. Refer to
AT-167, "MAIN POWER SUPPLY AND GROUND CIR-
.
OK or NG
OK
>> GO TO 3.
NG
>> Repair or replace damaged parts.
3.
DETECT MALFUNCTIONING ITEM
Check the following.
●
The A/T assembly harness connector pin terminals for damage or loose connection with harness connec-
tor.
OK or NG
OK
>> Replace the control valve with TCM. Refer to
AT-227, "Control Valve With TCM and A/T Fluid
.
NG
>> Repair or replace damaged parts.
4.
CHECK DTC
Perform “DTC Confirmation Procedure”.
●
Refer to
AT-157, "DTC Confirmation Procedure"
OK or NG
OK
>> INSPECTION END
NG
>> GO TO 2.
SCIA4794E
DTC P1841 ATF PRESSURE SWITCH 1
AT-159
D
E
F
G
H
I
J
K
L
M
A
B
AT
2007 Pathfinder
DTC P1841 ATF PRESSURE SWITCH 1
PFP:25240
Description
ECS00EK2
Fail-safe function to detect front brake clutch solenoid valve condition.
CONSULT-II Reference Value
ECS00EK3
On Board Diagnosis Logic
ECS00EK4
●
This is not an OBD-II self-diagnostic item.
●
Diagnostic trouble code “P1841 ATF PRES SW 1/CIRC” with CONSULT-II is detected when TCM detects
that actual gear ratio is normal, and relation between gear position and condition of ATF pressure switch 1
is irregular during depressing accelerator pedal. (Other than during shift change)
Possible Cause
ECS00EK5
●
ATF pressure switch 1
●
Harness or connectors
(The switch circuit is open or shorted.)
DTC Confirmation Procedure
ECS00EK6
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
If “DTC Confirmation Procedure” has been previously performed, always turn ignition switch “OFF”
and wait at least 10 seconds before performing the next test.
After the repair, perform the following procedure to confirm the malfunction is eliminated.
WITH CONSULT-II
1.
Start engine.
2.
Accelerate vehicle to maintain the following conditions.
ACCELE POS: 1.5/8 - 2.0/8
Selector lever: “D” position
Gear position: 3rd
Þ
4th Gear (FR/B ON/OFF)
Driving location: Driving the vehicle uphill (increased
engine load) will help maintain the driving conditions
required for this test.
3.
Perform step “2” again.
4.
Turn ignition switch “OFF”, then perform step “1” to “3” again.
5.
Check “SELF-DIAG RESULTS” mode for “A/T” with CONSULT-
II.
If DTC (P1841) is detected, go to
AT-160, "Diagnostic Procedure"
If DTC (P1757) is detected, go to
AT-144, "Diagnostic Procedure"
Item name
Condition
Display value
ATF PRES SW 1
Front brake engaged. Refer to
.
ON
Front brake disengaged. Refer to
.
OFF
BCIA0031E
AT-160
DTC P1841 ATF PRESSURE SWITCH 1
2007 Pathfinder
Diagnostic Procedure
ECS00EK7
1.
CHECK INPUT SIGNAL
With CONSULT-II
1.
Start engine.
2.
Select “ECU INPUT SIGNALS” or “MAIN SIGNALS” in “DATA
MONITOR” mode for “A/T” with CONSULT-II.
3.
Drive vehicle in the “D” position (3rd
Þ
4th gear), and confirm
the ON/OFF actuation of the “ATF PRES SW 1”.
OK or NG
OK
>> GO TO 4.
NG
>> GO TO 2.
2.
CHECK TCM POWER SUPPLY AND GROUND CIRCUIT
Check TCM power supply and ground circuit. Refer to
AT-167, "MAIN POWER SUPPLY AND GROUND CIR-
.
OK or NG
OK
>> GO TO 3.
NG
>> Repair or replace damaged parts.
3.
DETECT MALFUNCTIONING ITEM
Check the following.
●
The A/T assembly harness connector pin terminals for damage or loose connection with harness connec-
tor.
OK or NG
OK
>> Replace the control valve with TCM. Refer to
AT-227, "Control Valve With TCM and A/T Fluid
.
NG
>> Repair or replace damaged parts.
4.
CHECK DTC
Perform “DTC Confirmation Procedure”.
●
Refer to
AT-160, "Diagnostic Procedure"
.
OK or NG
OK
>> INSPECTION END
NG
>> GO TO 2.
PCIA0067E
DTC P1843 ATF PRESSURE SWITCH 3
AT-161
D
E
F
G
H
I
J
K
L
M
A
B
AT
2007 Pathfinder
DTC P1843 ATF PRESSURE SWITCH 3
PFP:25240
Description
ECS00EK8
Fail-safe function to detect input clutch solenoid valve condition.
CONSULT-II Reference Value
ECS00EK9
On Board Diagnosis Logic
ECS00EKA
●
This is not an OBD-II self-diagnostic item.
●
Diagnostic trouble code “P1843 ATF PRES SW 3/CIRC” with CONSULT-II is detected when TCM detects
that actual gear ratio is normal, and relation between gear position and condition of ATF pressure switch 3
is irregular during depressing accelerator pedal. (Other than during shift change)
Possible Cause
ECS00EKB
●
ATF pressure switch 3
●
Harness or connectors
(The switch circuit is open or shorted.)
DTC Confirmation Procedure
ECS00EKC
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
If “DTC Confirmation Procedure” has been previously performed, always turn ignition switch “OFF”
and wait at least 10 seconds before performing the next test.
After the repair, perform the following procedure to confirm the malfunction is eliminated.
WITH CONSULT-II
1.
Start engine.
2.
Accelerate vehicle to maintain the following conditions.
ACCELE POS: 1.5/8 - 2.0/8
Selector lever: “D” position
Gear position: 3rd
Þ
4th Gear (I/C ON/OFF)
Driving location: Driving the vehicle uphill (increased
engine load) will help maintain the driving conditions
required for this test.
3.
Perform step “2” again.
4.
Turn ignition switch “OFF”, then perform step “1” to “3” again.
5.
Check “SELF-DIAG RESULTS” mode for “A/T” with CONSULT-
II.
If DTC (P1843) is detected, go to
AT-162, "Diagnostic Procedure"
If DTC (P1752) is detected, go to
AT-140, "Diagnostic Procedure"
Item name
Condition
Display value
ATF PRES SW 3
Input clutch engaged. Refer to
.
ON
Input clutch disengaged. Refer to
.
OFF
BCIA0031E
AT-162
DTC P1843 ATF PRESSURE SWITCH 3
2007 Pathfinder
Diagnostic Procedure
ECS00EKD
1.
CHECK INPUT SIGNAL
With CONSULT-II
1.
Start engine.
2.
Select “ECU INPUT SIGNALS” or “MAIN SIGNALS” in “DATA
MONITOR” mode for “A/T” with CONSULT-II.
3.
Drive vehicle in the “D” position (3rd
Þ
4th gear), and confirm
the ON/OFF actuation of the “ATF PRES SW 3”.
OK or NG
OK
>> GO TO 4.
NG
>> GO TO 2.
2.
CHECK TCM POWER SUPPLY AND GROUND CIRCUIT
Check TCM power supply and ground circuit. Refer to
AT-167, "MAIN POWER SUPPLY AND GROUND CIR-
.
OK or NG
OK
>> GO TO 3.
NG
>> Repair or replace damaged parts.
3.
DETECT MALFUNCTIONING ITEM
Check the following.
●
The A/T assembly harness connector pin terminals for damage or loose connection with harness connec-
tor.
OK or NG
OK
>> Replace the control valve with TCM. Refer to
AT-227, "Control Valve With TCM and A/T Fluid
.
NG
>> Repair or replace damaged parts.
4.
CHECK DTC
Perform “DTC Confirmation Procedure”.
●
Refer to
AT-162, "Diagnostic Procedure"
.
OK or NG
OK
>> INSPECTION END
NG
>> GO TO 2.
PCIA0067E
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст