Nissan Juke Service and Repair Manual : P0730 incorrect gear ratio
Description
TCM selects the gear ratio using the engine load (throttle position), the primary pulley revolution speed, and the secondary pulley revolution speed as input signal. Then it changes the operating pressure of the primary pulley and the secondary pulley and changes the groove width of the pulley.
DTC Logic
DTC DETECTION L

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” in “TRANSMISSION”.
3. Make sure that output voltage of CVT fluid temperature sensor is within the range below.
ATF TEMP SEN : 1.0 – 2.0 V 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. Start engine and maintain the following conditions for at least 30 consecutive seconds.
TEST START FROM 0 km/h (0 MPH)
CONSTANT ACCELERATION : Keep 30 seconds or more
VEHICLE SPEED : 10 km/h (6 MPH) or more
ACC PEDAL OPEN : More than 1.0/8
RANGE : “D” position
ENG SPEED : 450 rpm or more
Is “P0730” detected? YES >> Go to TM-214, "Diagnosis Procedure".
NO >> Check intermittent incident. Refer to GI-42, "Intermittent Incident".
Diagnosis Procedure
1.CHECK DTC
1. Turn ignition switch ON.
2. Select “SELF-DIAG RESULTS”.
Are any DTC displayed? YES - 1 (DTC except for “P0730” is displayed)>>Check the DTC detected item. Refer to TM-159, "CONSULT- III Function (TRANSMISSION)".
YES - 2 (DTC for “P0730” is displayed)>>Replace the transaxle assembly. Refer to TM-301, "Removal and Installation".
NO >> Check intermittent incident. Refer to GI-42, "Intermittent Incident".
P0725 engine speed
Description
The engine speed signal is transmitted from ECM to TCM by CAN communication
line.
DTC Logic
DTC DETECTION LOGI
DTC CONFIRMATION PROCEDURE
CAUTION:
Always drive vehicle at a safe ...
P0730 incorrect gear ratio
DTC Logic
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 ...
Other materials:
P1212 TCS communication line
Description
This CAN communication line is used to control the smooth engine operation
during the TCS operation. Pulse
signals are exchanged between ECM and “ABS actuator and electric unit (control
unit)”.
Be sure to erase the malfunction information such as DTC not only for “ABS
ac ...
Electric power steering system
WARNING
• If the engine is not running or is turned off while driving, the power assist
for the steering will not work.
Steering will be harder to operate.
• When the electric power steering warning light illuminates with the engine
running, the power assist for the steering will ce ...
C1120, C1122, C1124, C1126 ABS in valve system
DTC Logic
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
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 CON ...
