Nissan Juke Service and Repair Manual : P0848 transmission fluid pressure SEN/SW B

DTC Logic

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE


DTC CONFIRMATION PROCEDURE

1.PREPARATION BEFORE WORK

If another "DTC CONFIRMATION PROCEDURE" occurs just before, the ignition switch OFF and wait for at least 10 seconds, then perform the next test.

>> GO TO 2.

2.CHECK DTC DETECTION

1. Start the engine.With CONSULT-III


1. Start the engine.

2. Select Data Monitor in TRANSMISSION.

3. Select FLUID TEMP.

4. Maintain the following conditions for 10 seconds or more.

FLUID TEMP : −19C (−2.2F) or more

5. Check the first trip DTC.

1. Start the engine and wait for at least 10 seconds.With GST.


1. Start the engine and wait for at least 10 seconds.

CAUTION:
When the ambient temperature is −20C (−4F) or less and the engine is cold, warm up the engine for approximately 5 minutes.

2. Check the first trip DTC.

Is P0848detected? YES >> Go to TM-428, "Diag

Diagnosis Procedure

1.CHECK SECONDARY PRESSURE SENSOR POWER SUPPLY CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect the CVT unit connector.

3. Turn ignition switch ON.

4. Check the voltage between CVT unit harness connector terminal and ground.

Is the inspection result normal?


Is the inspection result normal?

YES >> GO TO 2.

NO >> Repair or replace the malfunctioning parts.

2.CHECK CIRCUIT BETWEEN TCM AND CVT UNIT

1. Turn the ignition switch OFF.

2. Disconnect the TCM connector.

3. Check the continuity between the TCM harness connector terminal and the CVT unit harness connector terminal.

Is the inspection result normal?


Is the inspection result normal? YES >> GO TO 3.

NO >> Repair or replace the malfunctioning parts.

3.CHECK TCM INPUT SIGNALS

1. Connect all connectors removed.

2. Start the engine.

3. Check the voltage between TCM connector terminal and ground.

Is the inspection result normal?


Is the inspection result normal? YES >> Check intermittent incident. Refer to GI-42, "Intermittent Incident".

NO >> There is a malfunction of the secondary pressure sensor. Replace the transaxle assembly. Refer to TM-508, "Removal and Installation".

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