Nissan Juke Service and Repair Manual : P1722 vehicle speed

Description

The vehicle speed signal is transmitted from ABS actuator and electric unit (control unit) to TCM by CAN communication line.

DTC Logic

DTC DETECTION LOGIC

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 5 consecutive seconds.

ACC PEDAL OPEN : 1.0/8 or less VEHICLE SPEED : 30 km/h (19 MPH) or more

Is P1722 detected? YES >> Go to GI-42, "Intermittent Incident".

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

Diagnosis Procedure

1.CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)

Perform SELF-DIAG RESULTS.

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

NO >> Repair or replace damaged parts.

2.CHECK INPUT SIGNALS

1. Start engine.With CONSULT-III


1. Start engine.

2. Select DATA MONITOR.

3. Drive vehicle and read out the value of VEHICLE SPEED and ESTM VSP SIG.

4. Check if there is a great difference between the two values.


4. Check if there is a great difference between the two values.

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

NO >> GO TO 3.

3.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 TCM. Refer to TM-280, "Removal and Installation".

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