Nissan X-Trail 32. Manual - part 1009

 

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Nissan X-Trail 32. Manual - part 1009

 

 

P1656 ENGINE RESTART BYPASS RELAY

EC-1165

< DTC/CIRCUIT DIAGNOSIS >

[R9M]

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P1656 ENGINE RESTART BYPASS RELAY

DTC Description

INFOID:0000000010935869

DTC DETECTION LOGIC

POSSIBLE CAUSE

• Harness or connectors
- Engine restart bypass relay circuit is open or shorted.
- Engine restart bypass control relay circuit is open or shorted.
• Engine restart bypass relay
• Engine restart bypass control relay

FAIL-SAFE

STOP/START SYSTEM

DTC CONFIRMATION PROCEDURE

1.

PRECONDITIONING

If the other DTC Confirmation Procedure is performed right before this procedure, the ignition switch must be
turned OFF and wait for 10 seconds or more to start this procedure.

>> GO TO 2.

2.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1.

Start the engine and warm it up to normal operating temperature.

2.

Press start/stop OFF switch and check that the switch indicator is ON.

3.

Select “AUTO STOP START” in “ACTIVE TEST” mode of “ENGINE” using CONSULT.

4.

Touch “START” and operate stop/start system. (engine stop.)

5.

Touch “CANCEL” and restart the engine.

6.

Repeat Step 3 and Step 4 twice.

Without CONSULT

1.

Activate the stop/start system. Stop the engine. Restart the engine. Refer to 

EC-848, "STOP/START SYS-

TEM : System Description (M/T models)"

 (M/T models), 

EC-856, "STOP/START SYSTEM : System

Description (CVT models)"

 (CVT models).

2.

Repeat Step 1 four times.

CAUTION:

Always drive vehicle at a safe speed.

Is DTC detected?

YES

>> Proceed to 

EC-1166, "Diagnosis Procedure"

.

NO-1

>> To check malfunction symptom before repair: Refer to 

GI-44, "Intermittent Incident"

.

NO-2

>> Confirmation after repair: INSPECTION END

DTC No.

CONSULT screen terms

(Trouble diagnosis content)

DTC detecting condition

P1656

ENGINE RESTART BYPASS RELAY
(Engine restart bypass relay)

At an engine restart by stop/start system, the voltage right after the starter 
motor activation is less than Approx. 8 V.

Stop/start system operating condition in fail safe mode

Idling or driving the vehicle

Stop/start system operating

Stop

During cranking

(Restart)

Prohibit the stop/start system operation 
from the next time

EC-1166

< DTC/CIRCUIT DIAGNOSIS >

[R9M]

P1656 ENGINE RESTART BYPASS RELAY

Diagnosis Procedure

INFOID:0000000010935870

1.

CHECK FUSE

1.

Turn ignition switch OFF.

2.

Check that the following fuse is not fusing.

Is the fuse fusing?

YES

>> Replace the fuse after repairing the applicable circuit.

NO

>> GO TO 2.

2.

CHECK ENGINE RESTART BYPASS CONTROL RELAY POWER SUPPLY

1.

Turn ignition switch OFF.

2.

Remove engine restart bypass control relay.

3.

Turn ignition switch ON.

4.

Check the voltage between engine restart bypass control relay harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Perform the trouble diagnosis for power supply circuit.

3.

CHECK ENGINE RESTART BYPASS CONTROL RELAY CIRCUIT-1

1.

Turn ignition switch OFF.

2.

Disconnect ECM harness connector.

3.

Check the continuity between engine restart bypass control relay harness connector and ECM harness
connector.

4.

Also check harness for short to ground and to power.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair or replace error-detected parts.

4.

CHECK ENGINE RESTART BYPASS CONTROL RELAY CIRCUIT-2

1.

Disconnect engine restart bypass relay harness connector.

2.

Check the continuity between engine restart bypass control relay harness connector and engine restart
bypass relay harness connector.

Location

Fuse No.

Capacity

Fuse block (J/B)

27

15 A

+

Voltage

Engine restart bypass control relay

Connector

Terminal

F134

2

Ground

Battery voltage

3

+

Continuity

Engine restart bypass con-

trol relay

ECM

Connector

Terminal

Connector

Terminal

F134

1

F118

151

Existed

P1656 ENGINE RESTART BYPASS RELAY

EC-1167

< DTC/CIRCUIT DIAGNOSIS >

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3.

Also check harness for short to ground and to power.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Repair or replace error-detected parts.

5.

CHECK ENGINE RESTART BYPASS CONTROL RELAY

Check the engine restart bypass control relay. Refer to 

EC-1167, "Component Inspection (Engine Restart

Bypass Control Relay)"

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> Replace error-detected parts.

6.

CHECK ENGINE RESTART BYPASS RELAY

Check the engine restart bypass relay. Refer to 

EC-1167, "Component Inspection (Engine Restart Bypass

Relay)"

.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace error-detected parts.

Component Inspection (Engine Restart Bypass Control Relay)

INFOID:0000000010935871

1.

CHECK ENGINE RESTART BYPASS CONTROL RELAY

1.

Turn ignition switch OFF.

2.

Remove engine restart bypass control relay.

3.

Check continuity between engine restart bypass control relay
terminals as per the following condition. 

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace engine restart bypass control relay.

Component Inspection (Engine Restart Bypass Relay)

INFOID:0000000010935872

1.

CHECK ENGINE RESTART BYPASS RELAY-1

1.

Turn ignition switch OFF.

2.

Disconnect battery cable from negative terminal.

3.

Remove engine restart bypass relay. Refer to 

EC-1230, "Exploded View"

.

+

Continuity

Engine restart bypass con-

trol relay

Engine restart bypass relay

Connector

Terminal

Connector

Terminal

F134

5

F139

1

Existed

Engine restart bypass control relay

Condition

Continuity

+

Terminal

3

5

12 V direct current supply 
between terminals 1 and 2

Existed

No current supply

Not existed

JSBIA0671ZZ

EC-1168

< DTC/CIRCUIT DIAGNOSIS >

[R9M]

P1656 ENGINE RESTART BYPASS RELAY

4.

Check the continuity between engine restart bypass relay termi-
nal and engine restart bypass relay body.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Replace engine restart bypass relay. Refer to 

EC-1230, "Removal and Installation"

.

2.

CHECK ENGINE RESTART BYPASS RELAY-2

Check the resistance between engine restart bypass relay terminals
as per the following conditions. 

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace engine restart bypass relay. Refer to 

EC-1230, "Removal and Installation"

.

+

Continuity

Engine restart bypass 

relay

Terminal

1

Engine restart bypass 

relay body

Existed

JSBIA1735ZZ

Engine restart bypass relay

Condition

Resistance

(Approx.)

+

Terminal

2

3

12 V direct current sup-
ply between terminal 1 
and body

10 m

No current supply

JSBIA1736ZZ

 

 

 

 

 

 

 

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