Nissan Altima L32. Instruction — part 1002

PCS-72

< COMPONENT DIAGNOSIS >

[POWER DISTRIBUTION SYSTEM]

B2616 IGNITION RELAY CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect BCM harness connector.

3. Check continuity between ignition relay harness connector (A)

and BCM harness connector (B).

4. Check continuity between ignition relay harness connector (A)

and ground.

Is the inspection result normal?

YES

>> GO TO 6

NO

>> Repair or replace harness.

3.

CHECK IGNITION RELAY GROUND CIRCUIT

1. Turn ignition switch OFF.

2. Check continuity between ignition relay harness connector and

ground.

Is the inspection result normal?

YES

>> GO TO 4

NO

>> Repair or replace harness.

4.

CHECK IGNITION RELAY POWER SUPPLY CIRCUIT-2

Check voltage between ignition relay harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 5

NO

>> Repair or replace harness.

5.

CHECK IGNITION RELAY

Refer to

PCS-73, "Component Inspection (Ignition Relay)"

.

Is the inspection result normal?

YES

>> GO TO 6

NO

>> Replace ignition relay.

6.

CHECK INTERMITTENT INCIDENT

Refer to

GI-42, "Intermittent Incident"

.

>> Inspection End.

Ignition relay

BCM

Continuity

Terminal

Connector

Terminal

1

M19

70

Yes

Ignition relay

Ground

Continuity

Terminal

1

Ground

No

ALMIA0447ZZ

Ignition relay

Ground

Continuity

Terminal

2

Ground

Yes

ALMIA0448ZZ

Ignition relay

Ground

Voltage (V)

Terminal

5

Ground

Battery voltage

ALMIA0449ZZ

PCS

B2616 IGNITION RELAY CIRCUIT

PCS-73

< COMPONENT DIAGNOSIS >

[POWER DISTRIBUTION SYSTEM]

C

D

E

F

G

H

I

J

K

L

B

A

O

P

N

Component Inspection (Ignition Relay)

INFOID:0000000004202460

1.

CHECK IGNITION RELAY

1. Turn ignition switch OFF.

2. Remove ignition relay.

3. Check the continuity between ignition relay terminals under the

following conditions.

Is the inspection result normal?

YES

>> Inspection End.

NO

>> Replace ignition relay.

Terminals

Condition

Continuity

3 and 5

12V direct current supply between terminals 1 and 2

Yes

No current supply

No

PBIB0098E

PCS-74

< COMPONENT DIAGNOSIS >

[POWER DISTRIBUTION SYSTEM]

B2618 BCM

B2618 BCM

Description

INFOID:0000000004202461

BCM controls the various electrical components and simultaneously supplies power according to the power

supply position.

BCM checks the power supply position internally.

DTC Logic

INFOID:0000000004202462

DTC DETECTION LOGIC

NOTE:

• If DTC B2618 is displayed with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to

PCS-58, "DTC Logic"

.

• If DTC B2618 is displayed with DTC U1010, first perform the trouble diagnosis for DTC U1010. Refer to

PCS-59, "DTC Logic"

.

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

1. Turn ignition switch ON under the following conditions, and wait for at least 1 second.

-

CVT selector lever is in the P or N position

-

Release brake pedal

2. Check “Self diagnostic result” with CONSULT-III.
Is DTC detected?

YES

>> Go to

PCS-74, "Diagnosis Procedure"

.

NO

>> Inspection End.

Diagnosis Procedure

INFOID:0000000004202463

1.

INSPECTION START

1. Turn ignition switch ON.

2. Select “Self diagnostic result” mode with CONSULT-III.

3. Touch “ERASE”.

4. Perform DTC Confirmation Procedure.

See

PCS-74, "DTC Logic"

.

Is the 1st trip DTC B2618 displayed again?

YES

>> Replace BCM. Refer to

BCS-96, "Removal and Installation"

.

NO

>> Inspection End.

DTC No.

Trouble diagnosis

name

DTC detecting condition

Possible cause

B2618

BCM

An immediate operation of ignition relay (IPDM E/
R) is requested by BCM, but there is no response
for more than 1 second

• BCM

PCS

B261A PUSH-BUTTON IGNITION SWITCH

PCS-75

< COMPONENT DIAGNOSIS >

[POWER DISTRIBUTION SYSTEM]

C

D

E

F

G

H

I

J

K

L

B

A

O

P

N

B261A PUSH-BUTTON IGNITION SWITCH

Description

INFOID:0000000004202464

BCM transmits the change in the power supply position with the push-button ignition switch to IPDM E/R via

the CAN communication line. IPDM E/R transmits the power supply position status via CAN communication

line to BCM.

DTC Logic

INFOID:0000000004202465

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

1. Press the push-button ignition switch under the following conditions, and wait for at least 1 second.

-

CVT selector lever is in the P or N position.

-

Release the brake pedal.

2. Check “Self diagnostic result” with CONSULT-III.
Is DTC detected?

YES

>> Go to

PCS-75, "Diagnosis Procedure"

.

NO

>> Inspection End.

Diagnosis Procedure

INFOID:0000000004202466

1.

CHECK PUSH-BUTTON IGNITION SWITCH OPERATION

Press push-button ignition switch and check if it turns to ON.
Does ignition switch turn to ON?

YES

>> GO TO 2

NO

>> GO TO 4

2.

CHECK IGNITION SWITCH OUTPUT SIGNAL (IPDM E/R)

1. Disconnect push-button ignition switch.

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

ground.

Is the inspection result normal?

YES

>> GO TO 3

NO

>> Replace IPDM E/R. Refer to

PCS-48, "Removal and Installation"

.

3.

CHECK PUSH-BUTTON IGNITION SWITCH CIRCUIT (IPDM E/R)

DTC No.

Trouble diagnosis

name

DTC detecting condition

Possible cause

B261A

PUSH-BUTTON IG-
NITION SWITCH

BCM detects a difference of signal for 1 second or
more between the following information.
• Power supply position by push-button ignition

switch

• Power supply position from IPDM E/R (CAN)

• Harness or connectors

(Push-button ignition switch circuit
is open or shorted.)

Terminals

Voltage (V)

(+)

(-)

IPDM E/R

Ground

Connector

Terminal

E18

28

Battery voltage

ALMIA0090ZZ