Nissan Juke Service and Repair Manual : P0725 engine speed

Description

The engine speed signal is transmitted from ECM to TCM by CAN communication line.

DTC Logic

DTC DETECTION LOGI

DTC CONFIRMATION PROCEDURE


DTC CONFIRMATION PROCEDURE

CAUTION:
Always drive vehicle at a safe speed.

NOTE:

If DTC CONFIRMATION PROCEDURE has been previously performed, always turn ignition switch OFF and wait at least 10 seconds before performing the next test.

After the repair, perform the following procedure to confirm the malfunction is eliminated.

1.CHECK DTC DETECTION

1. Turn ignition switch ON.With CONSULT-III


1. Turn ignition switch ON.

2. Select DATA MONITOR in TRANSMISSION.

3. Start engine and maintain the following conditions for at least 10 consecutive seconds.

PRI SPEED SEN : More than 1000 rpm

Is P0725 detected? YES >> Go to TM-212, "Diagnosis Procedure".

NO >> Check intermittent incident. Refer to GI-42, "Intermittent Incident".

Diagnosis Procedure

1. CHECK DTC WITH ECM

1. Turn ignition switch ON.With CONSULT-III


1. Turn ignition switch ON.

2. Select SELF-DIAG RESULTS in ENGINE.

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

NO >> Check the DTC detected item. Refer to EC-83, "CONSULT-III Function".

2. CHECK DTC WITH TCM

Select SELF-DIAG RESULTS in TRANSMISSION.With CONSULT-III


Select SELF-DIAG RESULTS in TRANSMISSION.

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

NO >> Check the DTC detected item. Refer to TM-159, "CONSULT-III Function (TRANSMISSION)".

3. CHECK INPUT SIGNALS

1. Start engine.With CONSULT-III


1. Start engine.

2. Select DATA MONITOR in TRANSMISSION.

3. While monitoring ENG SPEED SIG, check for engine speed change corresponding to ACC PEDAL OPEN.

Is the inspection result normal?


Is the inspection result normal? YES >> GO TO 4.

NO >> Check ignition signal circuit. Refer to EC-414, "Component Function Check".

4. CHECK TCM

Check TCM input/output signals. Refer to TM-164, "Reference Value".

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

NO >> Replace the TCM. Refer to TM-280, "Removal and Installation".

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