Nissan Qashqai (2007-2010). Manual — part 584
P1723 CVT SPEED SENSOR FUNCTION
TM-271
< COMPONENT DIAGNOSIS >
[CVT: RE0F10A]
C
E
F
G
H
I
J
K
L
M
A
B
TM
N
O
P
YES
>> Repair or replace damaged parts. (Check the step motor function. Refer to
.)
NO
>> GO TO 2.
2.
CHECK OUTPUT SPEED SENSOR (SECONDARY SPEED SENSOR) SYSTEM
Check output speed sensor (secondary speed sensor) system. Refer to
.
Is the inspection result normal?
OK
>> GO TO 3.
NG
>> Repair or replace damaged parts.
3.
CHECK INPUT SPEED SENSOR (PRIMARY SPEED SENSOR) SYSTEM
Check input speed sensor (primary speed sensor) system. Refer to
Is the inspection result normal?
OK
>> GO TO 4.
NG
>> Repair or replace damaged parts.
4.
CHECK ENGINE SPEED SIGNAL SYSTEM
Check engine speed signal system. Refer to
Is the inspection result normal?
OK
>> GO TO 5.
NG
>> Repair or replace damaged parts. Refer to
(WITH EURO-OBD),
(WITHOUT EURO-OBD).
5.
CHECK TCM
Check TCM input/output signals. Refer to
.
Is the inspection result normal?
OK
>> Check intermittent incident. Refer to
GI-39, "Intermittent Incident"
.
NG
TM-272
< COMPONENT DIAGNOSIS >
[CVT: RE0F10A]
P1726 ELECTRIC THROTTLE CONTROL SYSTEM
P1726 ELECTRIC THROTTLE CONTROL SYSTEM
Description
INFOID:0000000000988722
Electric throttle control actuator consists of throttle control motor, accelerator pedal position sensor, throttle
position sensor etc. The actuator sends a signal to the ECM, and ECM sends the signal to TCM with CAN
communication.
DTC Logic
INFOID:0000000000988723
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
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.
1.
CHECK DTC DETECTION
With CONSULT-III
1.
Turn ignition switch ON.
2.
Start engine and let it idle for 5 seconds.
3.
Perform “SELF-DIAG RESULTS”. Refer to
TM-216, "CONSULT-III Function (TRANSMISSION)"
.
Is “P1726 ELEC TH CONTROL” detected?
YES
>> Go to
NO
>> Check intermittent incident. Refer to
GI-39, "Intermittent Incident"
.
Diagnosis Procedure
INFOID:0000000000988724
1.
CHECK DTC WITH ECM
With CONSULT-III
1.
Turn ignition switch ON.
2.
Select “SELF-DIAG RESULTS” mode for “ENGINE” with CONSULT-III. Refer to
EC-1054, "CONSULT-III Function"
(WITHOUT EURO-OBD).
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Check the DTC Detected Item. Refer to
EC-719, "CONSULT-III Function"
(WITH EURO-OBD),
EC-1054, "CONSULT-III Function"
(WITHOUT EURO-OBD).
2.
CHECK TCM
Check TCM input/output signals. Refer to
.
Is the inspection result normal?
YES
>> Check intermittent incident. Refer to
GI-39, "Intermittent Incident"
.
NO
DTC
Item
(CONSULT-III screen term)
Malfunction is detected when...
Possible cause
P1726
ELEC TH CONTROL
The electronically controlled
throttle for ECM is malfunction-
ing.
Harness or connectors
(Sensor circuit is open or short-
ed.)
P1740 LOCK-UP SELECT SOLENOID VALVE
TM-273
< COMPONENT DIAGNOSIS >
[CVT: RE0F10A]
C
E
F
G
H
I
J
K
L
M
A
B
TM
N
O
P
P1740 LOCK-UP SELECT SOLENOID VALVE
Description
INFOID:0000000000988725
• Lock-up select solenoid valve controls lock-up clutch pressure or forward clutch pressure (reverse brake
pressure).
• When controlling lock-up clutch, the valve is turned OFF. When controlling forward clutch, it is turned ON.
DTC Logic
INFOID:0000000000988726
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
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.
1.
CHECK DTC DETECTION
With CONSULT-III
1.
Turn ignition switch ON.
2.
Select “DATA MONITOR”.
3.
Start engine and maintain the following conditions for at least 5 consecutive seconds.
With GST
Follow the procedure “With CONSULT-III”.
Is “P1740 LU-SLCT SOL/CIRC” detected?
YES
>> Go to
NO
>> Check intermittent incident. Refer to
GI-39, "Intermittent Incident"
.
Diagnosis Procedure
INFOID:0000000000988727
1.
CHECK LOCK-UP SELECT SOLENOID VALVE CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect TCM connector.
3.
Check resistance between TCM connector terminal and ground.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> GO TO 2.
DTC
Item
(CONSULT-III screen term)
Malfunction is detected when...
Possible cause
P1740
LU-SLCT SOL/CIRC
• Normal voltage not applied to
solenoid due to cut line,
short, or the like.
• TCM detects as irregular by
comparing target value with
monitor value.
• Lock-up select solenoid valve
• Harness or connectors
(Solenoid circuit is open or
shorted.)
RANGE
: “D” position and “N” positions
(At each time, wait for 5 seconds.)
TCM connector
Ground
Resistance (Approx.)
Connector
Terminal
F25
37
17.0 – 38.0
Ω
TM-274
< COMPONENT DIAGNOSIS >
[CVT: RE0F10A]
P1740 LOCK-UP SELECT SOLENOID VALVE
2.
CHECK LOCK-UP SELECT SOLENOID VALVE
Check lock-up select solenoid valve.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair or replace damaged parts.
3.
CHECK HARNESS BETWEEN TCM AND LOCK-UP SELECT SOLENOID VALVE
1.
Turn ignition switch OFF.
2.
Disconnect TCM connector and CVT unit harness connector.
3.
Check continuity between TCM connector terminal and CVT unit harness connector terminal.
4.
If OK, check harness for short to ground and short to power.
5.
Reinstall any part removed.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Repair open circuit or short to ground or short to power in harness or connectors.
4.
CHECK TCM
Check TCM input/output signals. Refer to
.
Is the inspection result normal?
YES
>> Check intermittent incident. Refer to
GI-39, "Intermittent Incident"
.
NO
Component Inspection
INFOID:0000000000988728
LOCK-UP SELECT SOLENOID VALVE
1.
LOCK-UP SELECT SOLENOID VALVE
1.
Turn ignition switch OFF.
2.
Disconnect CVT unit harness connector.
3.
Check resistance between CVT unit harness connector terminal and ground.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace the transaxle assembly. Refer to
(4WD).
TCM connector
CVT unit harness connector
Continuity
Connector
Terminal
Connector
Terminal
F25
37
F24
13
Existed
CVT unit harness connector
Ground
Resistance (Approx.)
Connector
Terminal
F24
13
17.0 – 38.0
Ω
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