Infiniti G35 (V35) Sedan. Manual - part 1000

PCS-54

< COMPONENT DIAGNOSIS >

[POWER DISTRIBUTION SYSTEM]

B2614 ACC RELAY CIRCUIT

B2614 ACC RELAY CIRCUIT

Description

INFOID:0000000000964223

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:0000000000964224

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

1.

Turn the power supply position to ACC under the following conditions, and wait for at least 1 second.

-

A/T 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-54, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000000964225

1.

CHECK ACCESSORY RELAY POWER SUPPLY

1.

Turn ignition switch OFF.

2.

Disconnect accessory 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 ACCESSORY RELAY POWER SUPPLY CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect BCM harness connector M122.

3.

Check continuity between accessory relay harness connector and BCM harness connector.

4.

Check continuity between accessory relay harness connector and ground.

DTC No.

Trouble diagnosis 

name

DTC detecting condition

Possible cause

B2614

ACC relay circuit

An immediate operation of ACC relay is requested 
by BCM, but there is no response for more than 1 
second.

• Harness or connectors

(ACC relay circuit is open or short-
ed)

• ACC relay

Blower relay

Ground

Condition

Voltage (V)

Terminal

1

Ground

Ignition

OFF

0

ACC

Battery voltage

Accessory relay

BCM

Continuity

Terminal

Connector

Terminal

1

M122

122

Existed

PCS

B2614 ACC RELAY CIRCUIT

PCS-55

< COMPONENT DIAGNOSIS >

[POWER DISTRIBUTION SYSTEM]

C

D

E

F

G

H

I

J

K

L

B

A

O

P

N

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> Repair harness or connector.

3.

CHECK ACCESSORY RELAY GROUND CIRCUIT

1.

Turn ignition switch OFF.

2.

Check continuity between accessory relay harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair accessory relay ground circuit.

4.

CHECK ACCESSORY RELAY POWER SUPPLY CIRCUIT-2

Check voltage between accessory relay harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Check continuity open or short between accessory relay and battery.

5.

CHECK ACCESSORY RELAY

Refer to 

PCS-55, "Component Inspection (Accessory Relay)"

.

YES or NO

YES

>> GO TO 6.

NO

>> Replace accessory relay.

6.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-39, "Intermittent Incident"

.

>> INSPECTION END

Component Inspection (Accessory Relay)

INFOID:0000000000964226

1.

CHECK ACCESSORY RELAY

1.

Turn ignition switch OFF.

2.

Remove accessory relay.

Accessory relay

Ground

Continuity

Terminal

1

Ground

Not existed

Accessory relay

Ground

Continuity

Terminal

2

Ground

Existed

Accessory relay

Ground

Voltage (V)

Terminal

5

Ground

Battery voltage

PCS-56

< COMPONENT DIAGNOSIS >

[POWER DISTRIBUTION SYSTEM]

B2614 ACC RELAY CIRCUIT

3.

Check the continuity between accessory relay terminals under
the following conditions.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace accessory relay

Terminals

Condition

Continuity

3 and 5

12V direct current supply between terminals 1 and 2

Existed

No current supply

Not existed

PBIB0098E

PCS

B2615 BLOWER RELAY CIRCUIT

PCS-57

< COMPONENT DIAGNOSIS >

[POWER DISTRIBUTION SYSTEM]

C

D

E

F

G

H

I

J

K

L

B

A

O

P

N

B2615 BLOWER RELAY CIRCUIT

Description

INFOID:0000000000964227

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:0000000000964228

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.

-

A/T 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-57, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000000964229

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

1.

Turn ignition switch OFF.

2.

Disconnect BCM harness connector M122.

3.

Check continuity between blower relay harness connector and BCM harness connector.

4.

Check continuity between blower relay harness connector and ground.

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

1

Ground

OFF or ACC

0

ON

Battery voltage

Blower relay

BCM

Continuity

Terminal

Connector

Terminal

1

M122

102

Existed