Nissan Sentra Service Manual: P0863 TCM Communication

Nissan Sentra Service Manual / Transmission & driveline / Transaxle & transmission / CVT: RE0F11A / P0863 TCM Communication

DTC Logic

DTC DETECTION LOGIC

DTC	CONSULT screen terms (Trouble diagnosis content)	DTC detection condition	Possible causes
P0863	TCM COMMUNICATION (TCM Communication Circuit)	An error is detected at the initial CAN diagnosis of TCM.	TCM

DTC CONFIRMATION PROCEDURE

1.PREPARATION BEFORE WORK

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

>> GO TO 2.

2.CHECK DTC DETECTION

Turn ignition switch ON.
Check the DTC.

Is вЂњP0863вЂќ detected? YES >> Go to TM-198, "Diagnosis Procedure".

NO >> INSPECTION END

Diagnosis Procedure

1.CHECK INTERMITTENT INCIDNT

Refer to GI-39, "Intermittent Incident".

Is the inspection result normal? YES >> Replace the TCM. Refer to TM-263, "Removal and Installation".

NO >> Repair or replace malfunctioning parts.

P0890 TCM

DTC Logic

DTC DETECTION LOGIC

DTC

CONSULT screen terms (Trouble diagnosis content)

DTC detection condition

Possible causes

P0890

TCM (Transmission Control Module Power Relay Sense Circuit Low)

The battery voltage supplied to the TCM is less than 8.4 V continuously for 200 msec or more under the following diagnosis condition:

Diagnosis condition

TCM power supply voltage: More than 11 V

Harness or connector (TCM power supply (back-up) circuit is open or shorted.)
TCM

DTC CONFIRMATION PROCEDURE

1.PREPARATION BEFORE WORK

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

>> GO TO 2.

2.CHECK DTC DETECTION

Start the engine and wait for 5 seconds or more.
Check the DTC.

Is вЂњP0890вЂќ detected? YES >> Go to TM-199, "Diagnosis Procedure".

NO >> INSPECTION END

Diagnosis Procedure

1.CHECK TCM POWER SUPPLY (BACK-UP) CIRCUIT

Turn ignition switch OFF.
Disconnect TCM connector.
Check voltage between TCM harness connector terminals and ground.

Is the inspection
result normal? YES >> GO TO 2.

NO >> GO TO 3.

2.CHECK INTERMITTENT INCIDENT

Refer to GI-39, "Intermittent Incident".

Is the inspection result normal? YES >> Replace the TCM. Refer to TM-263, "Removal and Installation".

NO >> Repair or replace malfunctioning parts.

3.DETECT MALFUNCTIONING ITEMS

Check the following items:

Open or short circuit of harness between battery positive terminal and TCM connector terminals 45 and 46.

Refer to PG-8, "Wiring Diagram вЂ” Battery Power Supply вЂ”"
10A fuse (No.25, fuse and fusible link block). Refer to PG-48, "Terminal Arrangement".
10A fuse (No.28, fuse and fusible link block). Refer to PG-48, "Terminal Arrangement".

Is the inspection result normal? YES >> Check intermittent incident. Refer to GI-39, "Intermittent Incident".

NO >> Repair or replace malfunctioning parts.

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