Nissan Juke Service and Repair Manual : 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 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. Wait at least 10 consecutive seconds.
3. Select “Self Diagnostic Results” in “TRANSMISSION”.
With GST
Follow the procedure “With CONSULT-III”.
Is “P0740” detected? YES >> Go to TM-215, "Diagnosis Procedure".
NO >> Check intermittent incident. Refer to GI-42, "Intermittent Incident".
Diagnosis Procedure
1. CHECK TORQUE CONVERTER CLUTCH 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.
2. CHECK HARNESS BETWEEN TCM AND TORQUE CONVERTER CLUTCH SOLENOID VALVE
1. Disconnect CVT unit harness connector.
2. Check continuity between TCM connector terminal and CVT unit harness connector terminal.
3. If OK, check harness for short to ground and short to power.
4. If OK, check continuity between ground and transaxle assembly.
5. Reinstall any part removed.
Is the inspection result normal? YES >> GO TO 3.
NO >> Repair or replace damaged parts.
3.CHECK TORQUE CONVERTER CLUTCH SOLENOID VALVE
Check torque converter clutch solenoid valve. Refer to TM-216, "Component Inspection".
Is the inspection result normal? YES >> GO TO 4.
NO >> Repair or replace damaged parts.
4.CHECK TCM
Check TCM input/output signals. Refer to TM-164, "Reference Value".
Is the inspection result normal? YES >> Check intermittent incident. Refer to GI-42, "Intermittent Incident".
NO >> Replace the TCM. Refer to TM-280, "Removal and Installation".
Component Inspection
TORQUE CONVERTER CLUTCH SOLENOID VALVE
1.TORQUE CONVERTER CLUTCH 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 TM-301, "Removal and Installation".
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 th ...
P0744 torque converter
Description
This malfunction is detected when the torque converter clutch does not
lock-up as instructed by the TCM. This
is not only caused by electrical malfunction (circuits open or shorted), b ...
Other materials:
Intelligent key low battery warning does not operate
Diagnosis Procedure
1.CHECK DTC WITH BCM AND COMBINATION METER
Check that DTC is not detected with BCM and combination meter.
Is the inspection result normal?
YES >> GO TO 2.
NO-1 >> Refer to BCS-67, "DTC Index". (BCM)
NO-2 >> Refer to MWI-36, "DTC Index&qu ...
Wiring diagram
Engine control system
For connector terminal arrangements, harness layouts, and alphabets in a
(option abbreviation; if not
described in wiring diagram), refer to GI-12, "Connector Information/Explanation
of Option Abbreviation".
...
Warning lights and audible reminders
To help prevent the vehicle from moving unexpectedly by erroneous operation of
the Intelligent Key listed on the following chart or to help prevent the vehicle
from being stolen, chime or beep sounds inside and outside the vehicle and a warning
light illuminates or blinks.
When a chime or bee ...
