Nissan Murano: Dtc/circuit Diagnosis / P0890 Tcm

DTC Description

DTC DETECTION LOGIC

POSSIBLE CAUSE

• Harness or connector [TCM power supply (back-up) circuit is open or shorted]

• TCM

FAIL-SAFE

• Selector shock is large

• Start is slow

• Acceleration is slow

• Lock-up is not performed

• Nissan Murano Vehicle speed is not increased

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

1. Start the engine and wait for 5 seconds or more.

2. Check the DTC.

Is “P0890” detected?

Go to Diagnosis Procedure.

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

Confirmation after repair: INSPECTION END

CHECK TCM BATTERY POWER SUPPLY (BACK-UP) CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect TCM connector.

3. Check voltage between TCM harness connector terminals and ground.

   TCM		−	Voltage
   Connector	Terminal
   F25	45	Ground	10 – 16 V
   	46

Is the inspection result normal?

GO TO 3.

GO TO 2.

DETECT MALFUNCTIONING ITEMS

Check the following items:

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

• 10A fuse [No.25, located in the fuse block (J/B)]. Refer to Terminal Arrangement.

Is the inspection result normal?

Check intermittent incident. Refer to Intermittent Incident.

Repair or replace malfunctioning parts.

CHECK INTERMITTENT INCIDENT

Refer to Intermittent Incident.

Is the inspection result normal?

Replace the TCM. Refer to Removal and Installation.

Repair or replace malfunctioning parts.