Nissan Quest E52. Manual - part 943

PCS

B26F2 IGNITION RELAY

PCS-69

< DTC/CIRCUIT DIAGNOSIS >

[POWER DISTRIBUTION SYSTEM]

C

D

E

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4.

CHECK IGNITION RELAY (IPDM E/R) CONTROL SIGNAL CIRCUIT - 2

1.

Connect IPDM E/R connectors.

2.

Check voltage between IPDM E/R harness connector and ground.

Is the inspection result normal?

YES

>> Replace BCM. Refer to 

BCS-98, "Removal and Installation"

.

NO

>> Replace IPDM E/R.

(+)

(–)

Condition

Voltage (V)

(Approx.)

IPDM E/R

Connector

Terminal

E10

27

Ground

Ignition switch

OFF or ACC

6 - 16

PCS-70

< DTC/CIRCUIT DIAGNOSIS >

[POWER DISTRIBUTION SYSTEM]

B26F6 BCM

B26F6 BCM

DTC Logic

INFOID:0000000009652896

DTC DETECTION LOGIC

NOTE:
• If DTC B26F6 is displayed with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to

BCS-87, "DTC Logic"

.

• If DTC B26F6 is displayed with DTC U1010, first perform the trouble diagnosis for DTC U1010. Refer to

BCS-88, "DTC Logic"

.

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

1.

Turn ignition switch ON, and wait for 0.5 seconds or more.

2.

Check “Self-diagnosis result” of BCM with CONSULT. 

Is DTC detected?

YES

>> Go to 

PCS-70, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000009652897

1.

INSPECTION START

1.

Turn ignition switch ON.

2.

Select “Self-diagnosis result” of BCM with CONSULT.

3.

Touch “ERASE”.

4.

Perform DTC Confirmation Procedure.
See 

PCS-70, "DTC Logic"

.

Is DTC detected?

YES

>> Replace BCM. Refer to 

BCS-98, "Removal and Installation"

NO

>> INSPECTION END

DTC No.

Trouble diagnosis 

name

DTC detecting condition

Possible cause

B26F6

BCM

Ignition switch ON signal (CAN) (ON) is not transmitted 
from IPDM E/R, when BCM turns ignition relay ON 
[Transmit ignition switch ON signal (CAN) (ON)].

BCM

PCS

PUSH-BUTTON IGNITION SWITCH

PCS-71

< DTC/CIRCUIT DIAGNOSIS >

[POWER DISTRIBUTION SYSTEM]

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PUSH-BUTTON IGNITION SWITCH

Component Function Check

INFOID:0000000009652898

1.

CHECK FUNCTION

1.

Select “PUSH SW” in “Data Monitor” mode with CONSULT. 

2.

Check the push-button ignition switch signal under the following conditions.

Is the indication normal?

YES

>> INSPECTION END.

NO

>> Go to  

PCS-71, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000009652899

1.

CHECK PUSH-BUTTON IGNITION SWITCH OUTPUT SIGNAL 1

1.

Turn ignition switch OFF.

2.

Disconnect push-button ignition switch connector and IPDM E/R connector.

3.

Check voltage between push-button ignition switch harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> GO TO 2.

2.

CHECK PUSH-BUTTON IGNITION SWITCH CIRCUIT 1

1.

Disconnect BCM connector.

2.

Check continuity between BCM harness connector and push-button ignition switch harness connector.

3.

Check continuity between BCM harness connector and ground.

Is the inspection result normal?

YES

>> Replace BCM. Refer to 

BCS-98, "Removal and Installation"

.

NO

>> Repair or replace harness.

3.

CHECK PUSH-BUTTON IGNITION SWITCH OUTPUT SIGNAL 2

Check voltage between IPDM E/R harness connector and ground.

Test item

Condition

Status

PUSH SW

Push-button ignition switch is pressed

ON

Push-button ignition switch is not pressed

OFF

(+)

(–)

Voltage (V)

(Approx.)

Push-button ignition switch

Connector

Terminal

M101

4

Ground

9 -16

BCM

Push-button ignition switch

Continuity

Connector

Terminal

Connector

Terminal

M124

76

M101

4

Existed

BCM

Ground

Continuity

Connector

Terminal

M124

76

Not existed

PCS-72

< DTC/CIRCUIT DIAGNOSIS >

[POWER DISTRIBUTION SYSTEM]

PUSH-BUTTON IGNITION SWITCH

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> GO TO 4.

4.

CHECK PUSH-BUTTON IGNITION SWITCH CIRCUIT 2

1.

Disconnect BCM connector.

2.

Check continuity between IPDM E/R harness connector and push-button ignition switch harness connec-
tor.

3.

Check continuity between IPDM E/R harness connector and ground.

Is the inspection result normal?

YES

>> Replace IPDM E/R.

NO

>> Repair or replace harness.

5.

CHECK PUSH-BUTTON IGNITION SWITCH GROUND CIRCUIT 

Check continuity between push-button ignition switch harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> Repair or replace harness.

6.

CHECK PUSH-BUTTON IGNITION SWITCH

Refer to 

PCS-72, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 7.

NO

>> Replace push-button ignition switch.

7.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-42, "Intermittent Incident"

.

>> INSPECTION END

Component Inspection

INFOID:0000000009652900

1.

CHECK PUSH-BUTTON IGNITION SWITCH

1.

Turn ignition switch OFF.

2.

Disconnect push-button ignition switch connector.

3.

Check continuity between push-button ignition switch terminals.

(+)

(–)

Voltage (V)

(Approx.)

IPDM E/R

Connector

Terminal

E10

28

Ground

9 - 16

IPDM E/R

Push-button ignition switch

Continuity

Connector

Terminal

Connector

Terminal

E10

28

M101

4

Existed

IPDM E/R

Ground

Continuity

Connector

Terminal

E10

28

Not existed

Push-button ignition switch

Ground

Continuity

Connector

Terminal

M101

1

Existed