Nissan Murano: Dtc/circuit Diagnosis / P0847 Transmission Fluid Pressure Sen/sw B

DTC Description

DTC DETECTION LOGIC

POSSIBLE CAUSE

• Harness or connector (Secondary pressure sensor circuit is open or shorted to ground)

• Secondary pressure sensor

• Control valve assembly

FAIL-SAFE

Not changed from normal driving

PREPARATION BEFORE WORK

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

GO TO 2.

CHECK DTC DETECTION

With CONSULT

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

   : −20°C (−4°F)

5. Check the first trip DTC.

With GST

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

   CAUTION:

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

2. Check the first trip DTC.

Is “P0847”detected?

Go to Diagnosis Procedure.

To check malfunction symptom before repair: Refer to Intermittent Incident.

Confirmation after repair: INSPECTION END

CHECK TCM INPUT SIGNALS

1. Turn ignition switch OFF.

2. Start the engine.

3. Check voltage between TCM harness connector terminals.

   +		−	Condition	Voltage
   TCM
   Connector	Terminal
   F25	16	Ground	Selector lever: “N” position At idle	1.7 – 1.8 V

Is the inspection result normal?

Check intermittent incident. Refer to Intermittent Inciden.

GO TO 2.

CHECK CIRCUIT BETWEEN TCM AND CVT UNIT (PART 1)

1. Turn ignition switch OFF.

2. Disconnect TCM connector and CVT unit connector.

3. Check continuity between TCM harness connector terminals and CVT unit harness connector terminals.

   TCM		CVT unit		Continuity
   Connector	Terminal	Connector	Terminal
   F25	11	F44	18	Existed
   	16		14
   	26		22

Is the inspection result normal?

GO TO 3.

Repair or replace malfunctioning parts.

CHECK CIRCUIT BETWEEN TCM AND CVT UNIT (PART 2)

Check continuity between TCM harness connector terminals and ground.

Is the inspection result normal?

GO TO 4.

Repair or replace malfunctioning parts.

CHECK TERMINAL CORD ASSEMBLY (PART 1)

1. Remove terminal cord assembly. Refer to Removal and Installation.

2. Check continuity between CVT unit harness connector terminals and control valve harness connector terminals.

   CVT unit		Control valve		Continuity
   Connector	Terminal	Connector	Terminal
   F210	14	F207	12	Existed
   	18		13
   	22		11

Is the inspection result normal?

GO TO 5.

Repair or replace malfunctioning parts.

CHECK TERMINAL CORD ASSEMBLY (PART 2)

Check damage of terminal cord assembly.

Is the inspection result normal?

There is malfunction of secondary pressure sensor. Replace control valve assembly. Refer to Removal and Installation.

Repair or replace malfunctioning parts.