Nissan Juke Service and Repair Manual : P1651 starter motor relay

Description

ECM controls ON/OFF state of the starter relay, according to the engine and vehicle condition. Models with no Intelligent Key System transmit a control signal directly to IPDM E/R. On the other hand, models with the Intelligent Key System transmit a control signal to IPDM E/R by way of BCM via CAN communication.

Under normal conditions, ECM controls and maintains the starter relay in OFF state during engine running or D position.

When detecting a decrease in engine speed due to rapid deceleration or heavy load condition, ECM controls and reactivates the starter relay.

IPDM E/R detects a control state of starter relay and starter control relay and transmits a feedback signal to ECM via CAN communication.

DTC Logic

DTC DETECTION LOGIC

NOTE

:
If DTC P1650 is displayed with DTC U1001, perform the trouble diagnosis for DTC U1001. Refer to EC-569, "DTC Logic".

If DTC P1650 is displayed with DTC P0607, perform the trouble diagnosis for DTC P0607. Refer to EC-685, "DTC Logic".

If DTC P1650 is displayed with B209F or B20A0 of IPDM E/R, perform the trouble diagnosis for B209F or B20A0. Refer to SEC-134, "DTC Logic" or SEC-136, "DTC Logic".

If DTC P1650 is displayed with B26F9 or B26FA of BCM, perform the trouble diagnosis for B209F or B20A0.

Refer to SEC-128, "DTC Logic" or SEC-130, "DTC Logic".

DTC CONFIRMATION PROCEDURE


DTC CONFIRMATION PROCEDURE

1.PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always perform the following procedure before conducting the next test.

1. Turn ignition switch OFF and wait at least 10 seconds.

2. Turn ignition switch ON.

3. Turn ignition switch OFF and wait at least 10 seconds.

>> GO TO 2.

2.PERFORM DTC CONFIRMATION PROCEDURE FOR MALFUNCTION

1. Turn ignition switch OFF and wait at least 10 seconds.

2. Start the engine and let it idle at least 30 seconds.

3. Check 1st trip DTC.

Is 1st trip DTC detected? YES >> Proceed to EC-728, "Diagnosis Procedure".

NO >> INSPECTION END

Diagnosis Procedure

1.INSPECTION START

Check the starter motor operation.

Is the starter motor operated? YES >> GO TO 3.

NO >> GO TO 2.

2.CHECK DTC WITH IPDM E/R

Check DTC with IPDM E/R. Refer to PCS-14, "CONSULT-III Function (IPDM E/R)".

Is the starter motor operated? YES-1 >> With Intelligent Key system: GO TO 3.

YES-2 >> Without Intelligent Key system: GO TO 4.

NO >> Perform trouble diagnosis for DTC indicated.

3.CHECK DTC WITH BCM

Check DTC with BCM. Refer to BCS-36, "BCM : CONSULT-III Function (BCM - BCM)".

Is the starter motor operated? YES >> GO TO 4.

NO >> Perform trouble diagnosis for DTC indicated.

4.CHECK CRANKING REQUEST SIGNAL CIRCUIT

With Intelligent Key system 1. Turn ignition switch OFF.

2. Disconnect ECM harness connector.

3. Disconnect IPDM E/R harness connector.

4. Check the continuity between ECM harness connector and IPDM E/R harness connector.

5. Also check harness for short to ground to power.


5. Also check harness for short to ground to power.

6. Disconnect BCM harness connector.

7. Check the continuity between ECM harness connector and BCM harness connector.

8. Also check harness for short to ground to power.


8. Also check harness for short to ground to power.

With Intelligent Key system 1. Turn ignition switch OFF.

2. Disconnect ECM harness connector.

3. Disconnect IPDM E/R harness connector.

4. Check the continuity between ECM harness connector and IPDM E/R harness connector.

5. Also check harness for short to ground to power.


5. Also check harness for short to ground to power.

Is the starter motor operated? YES >> GO TO 5.

NO >> Repair or replace error-detected parts.

5.CHECK INTERMITTENT INCIDENT

Perform GI-42, "Intermittent Incident".

Is the inspection result normal? YES >> Replace IPDM E/R. Refer to PCS-34, "Removal and Installation".

NO >> Repair or replace error-detected parts.

    P1650 starter motor relay 2
    Description ECM controls ON/OFF state of the starter relay, according to the engine and vehicle condition. Models with no Intelligent Key System transmit a control signal directly to IPDM E/R. On ...

    P1652 starter motor system COMM
    Description ECM controls ON/OFF state of the starter relay, according to the engine and vehicle condition. Models with no Intelligent Key System transmit a control signal directly to IPDM E/R. On ...

    Other materials:

    General Precautions
    WARNING: When replacing fuel line parts, be sure to observe the following. Put a CAUTION: FLAMMABLE sign in the workshop. Be sure to work in a well ventilated area and furnish workshop with a CO2 fire extinguisher. Never smoke while servicing fuel system. Keep open flames and sparks ...

    Starting difficult with cold engine
    Description CHART 3: STARTING DIFFICULT WITH COLD ENGINE Diagnosis Procedure 1.CHECK ENGINE OIL LEVEL Is the engine oil level correct? Yes or No Yes >> GO TO 2. No >> Top up the oil. 2.CHECK ENGINE OIL Check the grade of engine oil. Refer to LU-33, "Inspection". ...

    Symptom diagnosis
    SYSTEM SYMPTOM Symptom Table The diagnostics item numbers show the sequence for inspection. Inspect in order from item 1. ...