Nissan Altima 2007-2012 Service Manual: P0730 belt damage

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 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.

Then wait at least 10 seconds before performing the next test.

1.CHECK DTC DETECTION

1. Turn ignition switch ON.

2. Select “DATA MONITOR”.

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.

Is “P0730 BELT DAMG” detected? YES >> Go to TM-143, "Diagnosis Procedure".

NO >> Check intermittent incident. Refer to GI-42, "Intermittent Incident".

Diagnosis Procedure

1.CHECK DTC

1. Turn ignition switch ON.

2. Perform “SELF-DIAG RESULTS” mode for “TRANSMISSION”.

Are any DTC displayed? YES-1 >> DTC for “P0730 BELT DAMG” is displayed: Go to replace transaxle assembly. Refer to TM-259, "Exploded View".

YES-2 >> DTC except for “P0730 BELT DAMG” is displayed: Go to check DTC detected item. Refer to TM- 221, "DTC Index".

NO >> Check intermittent incident. Refer to GI-42, "Intermittent Incident".

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    Description • The torque converter clutch solenoid valve is activated by the TCM in response to signals sent from the vehicle speed and accelerator pedal position sensors. Lock-up piston operati ...

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