Nissan Sentra. Manual - part 427

EC-404

< DTC/CIRCUIT DIAGNOSIS >

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P1652 STARTER MOTOR SYSTEM COMM

P1652 STARTER MOTOR SYSTEM COMM

Description

INFOID:0000000009758659

ECM controls ON/OFF state of the starter relay, according to the engine and vehicle condition. ECM transmits

a control signal to IPDM E/R via BCM by CAN communication.

Under normal conditions, ECM controls and maintains the starter relay in OFF state during following condition: 

• Engine is running.

• Selector lever is D position. (CVT models)

• Clutch pedal is fully released. (M/T models)

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

INFOID:0000000009758660

DTC DETECTION LOGIC

NOTE:

• If DTC P1652 is displayed with DTC U1001, perform the trouble diagnosis for DTC U1001. Refer to 

EC-169,

"DTC Logic"

.

• If DTC P1652 is displayed with DTC P0607, perform the trouble diagnosis for DTC P0607. Refer to 

EC-350,

"DTC Logic"

.

• If DTC P1652 is displayed with B209F or B20A0 of IPDM E/R, perform the trouble diagnosis for B209F or

B20A0. Refer to 

SEC-118, "DTC Logic"

 or 

SEC-120, "DTC Logic"

.

• If DTC P1652 is displayed with B26F9 or B26FA of BCM, perform the trouble diagnosis for B26F9 or B26FA.

Refer to 

SEC-112, "DTC Logic"

 or 

SEC-114, "DTC Logic"

.

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 wait at least 5 minutes.

3. Repeat step 1 and 2 for 20 times.

4. Check DTC.
Is DTC detected?

YES

>> Proceed to 

EC-404, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000009758661

1.

CHECK SELF-DIAGNOSTIC RESULT IN BCM

With CONSULT

Check self-diagnostic result in BCM.

DTC No.

CONSULT screen terms

(Trouble diagnosis content)

DTC detecting condition

Possible cause

P1652

STR MTR SYS COMM
(Starter motor system com-
munication)

ECM detects malfunction in starter motor 
drive circuit of the IPDM E/R.

IPDM E/R

P1652 STARTER MOTOR SYSTEM COMM

EC-405

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Are any DTC detected?

YES

>> Check the DTC. Refer to 

BCS-49, "DTC Index"

 (with intelligent key), 

BCS-109, "DTC Index"

(without intelligent key).

NO

>> GO TO 2.

2.

CHECK SELF-DIAGNOSTIC RESULT IN IPDM E/R

With CONSULT

Check self-diagnostic result in IPDM E/R.
Are any DTC detected?

YES

>> Check the DTC. Refer to 

PCS-20, "DTC Index"

 (with intelligent key), 

PCS-48, "DTC Index"

 (with-

out intelligent key).

NO

>> GO TO 3.

3.

PERFORM DTC CONFIRMATION PROCEDURE

1. Erase DTC.

2. Perform DTC confirmation procedure again. Refer to 

EC-404, "DTC Logic"

.

3. Check DTC.
Is the P1652 displayed again?

YES

>> GO TO 4.

NO

>> INSPECTION END

4.

CHECK INTERMITTENT INCIDENT

Check intermittent incident. Refer to 

GI-39, "Intermittent Incident"

.

Is the inspection result normal?

YES

>> Replace IPDM E/R. Refer to 

PCS-58, "Removal and Installation"

.

NG 

>> Repair or replace error-detected parts.

EC-406

< DTC/CIRCUIT DIAGNOSIS >

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P1715 INPUT SPEED SENSOR

P1715 INPUT SPEED SENSOR

Description

INFOID:0000000009758662

ECM receives input speed sensor signal from TCM through CAN communication line. ECM uses this signal for

engine control.

DTC Logic

INFOID:0000000009758663

DTC DETECTION LOGIC

NOTE:

• If DTC P1715 is displayed with DTC UXXXX, first perform the trouble diagnosis for DTC UXXXX.

• If DTC P1715 is displayed with DTC P0335, first perform the trouble diagnosis for DTC P0335. Refer

to 

EC-277, "DTC Logic"

.

• If DTC P1715 is displayed with DTC P0340, first perform the trouble diagnosis for DTC P0340. Refer

to 

EC-280, "DTC Logic"

.

• If DTC P1715 is displayed with DTC P0605, first perform the trouble diagnosis for DTC P0605. Refer

to 

EC-348, "DTC Logic"

.

• If DTC P1715 is displayed with DTC P0607, first perform the trouble diagnosis for DTC P0607. Refer

to 

EC-350, "DTC Logic"

.

DTC CONFIRMATION PROCEDURE

1.

PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always perform the following before conduct-

ing 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

1. Start engine and drive the vehicle at more than 50 km/h (31 MPH) for at least 5 seconds.

CAUTION:

Always drive vehicle at a safe speed.

2. Check 1st trip DTC.
Is 1st trip DTC detected?

YES

>> Proceed to 

EC-406, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000009758664

1.

CHECK DTC WITH TCM

Check DTC with TCM. Refer to 

TM-108, "CONSULT Function"

.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Perform trouble shooting relevant to DTC indicated.

DTC No.

CONSULT screen terms

(Trouble diagnosis content)

DTC detecting condition

Possible cause

P1715

IN PULY SPEED
(IN PULY SPEED)

Input speed sensor signal is different from 
the theoretical value calculated by ECM 
from output speed sensor signal and en-
gine rpm signal.

• Harness or connectors

(The CAN communication line is open or 
shorted)

• Harness or connectors

(Input speed sensor circuit is open or 
shorted)

• TCM

P1715 INPUT SPEED SENSOR

EC-407

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2.

REPLACE TCM

Replace TCM. Refer to 

TM-263, "Removal and Installation"

.

>> INSPECTION END