P0845

P0845 TRANSMISSION FLUID PRESSURE SEN/SW B

DTC Logic


DTC DETECTION LOGIC







DTC CONFIRMATION PROCEDURE


1. PRECONDITIONING

If "DTC CONFIRMATION PROCEDURE" has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test.
- GO TO 2.

2. CHECK DTC DETECTION

With CONSULT
1.Start the engine.
2.Warm up the engine. [Set the CVT fluid to 19�C (-4�F) or more.]
NOTE:
When the ambient temperature is 20�C (68�F), the CVT fluid usually increases to 50 to 80�C (122 to
176�F) with driving in an urban area for approximately 10 minutes.
3.Wait for 5 seconds or more.
4.Check DTC.
With GST
Follow the procedure "With CONSULT".
Is "P0845" detected?
YES- Go to "Diagnosis Procedure" .
NO- INSPECTION END


Diagnosis Procedure

Regarding Wiring Diagram information, refer to "Wiring Diagram" Electrical Diagrams.

1. CHECK TCM INPUT SIGNAL

1.Start the engine.
2.Check voltage between TCM connector terminals.





Is the inspection result normal?
YES- Check intermittent incident. Refer to "Intermittent Incident" Intermittent Incident.
NO- GO TO 2.

2. CHECK SENSOR POWER AND SENSOR GROUND

1.Turn ignition switch OFF.
2.Check voltage between TCM connector terminals.
Revision: March 20122013 Infiniti JX





Is the inspection result normal?
YES- GO TO 3.
NO- Go to "Diagnosis Procedure" P1701.

3. CHECK CIRCUIT BETWEEN TCM AND CVT UNIT

1.Turn ignition switch OFF.
2.Disconnect TCM connector.
3.Disconnect CVT unit connector.
4.Check continuity between TCM harness connector terminal and CVT unit harness connector terminal.





5.Check the continuity between TCM harness connector terminal and ground.





Is the inspection result normal?
YES- GO TO 4.
NO- Repair or replace damaged parts.

4. CHECK INTERMITTENT INCIDENT

Refer to "Intermittent Incident" Intermittent Incident.
Is the inspection result normal?
YES- Replace transaxle assembly due to malfunction in primary pressure sensor. Refer to "Removal and Installation" Removal and Installation.
NO- Repair or replace damaged parts.
Revision: March 20122013 Infiniti JX