Nissan Juke Service and Repair Manual : P0730 incorrect gear ratio

DTC Logic

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE


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

1. Turn ignition switch ON.With CONSULT-III


1. Turn ignition switch ON.

2. Wait at least 10 consecutive seconds.

3. Select “Self Diagnostic Results” in “TRANSMISSION”.

Follow the procedure “With CONSULT-III”.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?


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.


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?


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:

    Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT PRE-TENSIONER"
    The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain types of collision. Information necessary to service the system safely is include ...

    Precaution Necessary for Steering Wheel Rotation after Battery Disconnect
    NOTE: • Before removing and installing any control units, first turn the ignition switch to the LOCK position, then disconnect both battery cables. • After finishing work, confirm that all control unit connectors are connected properly, then re-connect both battery cables. • Always use CONS ...

    BCM
    Removal and Installation CAUTION: Before replacing BCM, perform “READ CONFIGURATION” to save or print current vehicle specification. Refer to BCS-80, "ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT (BCM) : Description". REMOVAL (RHD MODELS) 1. Remove glove box assembly. Refer to I ...