Nissan Altima L32. Instruction — part 1001

PCS-68

< COMPONENT DIAGNOSIS >

[POWER DISTRIBUTION SYSTEM]

B2615 BLOWER RELAY CIRCUIT

B2615 BLOWER RELAY CIRCUIT

Description

INFOID:0000000004202453

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:0000000004202454

DTC DETECTION 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-68, "Diagnosis Procedure"

.

NO

>> Inspection End.

Diagnosis Procedure

INFOID:0000000004202455

1.

CHECK BLOWER RELAY POWER SUPPLY

1. Turn ignition switch OFF.

2. Disconnect blower relay.

3. Check voltage between blower relay harness connector and

ground under the following conditions.

Is the inspection result normal?

YES

>> GO TO 3

NO

>> GO TO 2

2.

CHECK BLOWER RELAY POWER SUPPLY CIRCUIT

DTC No.

Trouble diagnosis

name

DTC detecting condition

Possible cause

B2615

Blower relay circuit

BCM detects a difference of signal for 1 second or
more between the following information.
• Blower relay ON/OFF request
• Blower relay feedback

• Harness or connectors

(Blower relay circuit is open or
shorted)

• Blower relay

Blower relay

Ground

Condition

Voltage (V)

Terminal

2

Ground

OFF or ACC

0

ON

Battery voltage

ALMIA0450ZZ

PCS

B2615 BLOWER RELAY CIRCUIT

PCS-69

< COMPONENT DIAGNOSIS >

[POWER DISTRIBUTION SYSTEM]

C

D

E

F

G

H

I

J

K

L

B

A

O

P

N

1. Turn ignition switch OFF.

2. Disconnect BCM harness connector.

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

and BCM harness connector (B).

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

and ground.

Is the inspection result normal?

YES

>> GO TO 6

NO

>> Repair or replace harness.

3.

CHECK BLOWER RELAY GROUND CIRCUIT

1. Turn ignition switch OFF.

2. Check continuity between blower relay harness connector and

ground.

Is the inspection result normal?

YES

>> GO TO 4

NO

>> Repair blower relay ground circuit.

4.

CHECK BLOWER RELAY POWER SUPPLY CIRCUIT-2

Check voltage between blower relay harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 5

NO

>> Repair or replace harness.

5.

CHECK BLOWER RELAY

Refer to

PCS-70, "Component Inspection (Blower Relay)"

.

Is the inspection result normal?

YES

>> GO TO 6

NO

>> Replace blower relay.

6.

CHECK INTERMITTENT INCIDENT

Refer to

GI-42, "Intermittent Incident"

.

>> Inspection End.

Blower relay

BCM

Continuity

Terminal

Connector

Terminal

2

M19

90

Yes

Blower relay

Ground

Continuity

Terminal

2

Ground

No

ALMIA0451ZZ

Blower relay

Ground

Continuity

Terminal

1

Ground

Yes

ALMIA0445ZZ

Blower relay

Ground

Voltage (V)

Terminal

3

Ground

Battery voltage

ALMIA0441ZZ

PCS-70

< COMPONENT DIAGNOSIS >

[POWER DISTRIBUTION SYSTEM]

B2615 BLOWER RELAY CIRCUIT

Component Inspection (Blower Relay)

INFOID:0000000004202456

1.

CHECK BLOWER RELAY

1. Turn ignition switch OFF.

2. Remove blower relay.

3. Check the continuity between blower relay terminals under the

following conditions.

Is the inspection result normal?

YES

>> Inspection End.

NO

>> Replace blower relay.

Terminals

Condition

Continuity

3 and 5

12V direct current supply between terminals 1 and 2

Yes

No current supply

No

PBIB0098E

PCS

B2616 IGNITION RELAY CIRCUIT

PCS-71

< COMPONENT DIAGNOSIS >

[POWER DISTRIBUTION SYSTEM]

C

D

E

F

G

H

I

J

K

L

B

A

O

P

N

B2616 IGNITION RELAY CIRCUIT

Description

INFOID:0000000004202457

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:0000000004202458

DTC DETECTION 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-71, "Diagnosis Procedure"

.

NO

>> Inspection End.

Diagnosis Procedure

INFOID:0000000004202459

1.

CHECK IGNITION RELAY POWER SUPPLY

1. Turn ignition switch OFF.

2. Disconnect ignition relay.

3. Check voltage between ignition relay harness connector and

ground under the following conditions.

Is the inspection result normal?

YES

>> GO TO 3

NO

>> GO TO 2

2.

CHECK IGNITION RELAY POWER SUPPLY CIRCUIT

DTC No.

Trouble diagnosis

name

DTC detecting condition

Possible cause

B2616

Ignition relay circuit

An immediate operation of ignition relay (fuse
block) is requested by BCM, but there is no re-
sponse for more than 1 second

• Harness or connectors

(Ignition relay circuit is open or
shorted)

• Ignition relay (Fuse block)

Ignition relay

Ground

Condition

Voltage (V)

Terminal

1

Ground

Ignition switch OFF

or ACC

0

Ignition switch ON

Battery voltage

ALMIA0446ZZ