Infiniti G35 (V35) Sedan. Manual - part 999

 

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Infiniti G35 (V35) Sedan. Manual - part 999

 

 

PCS-50

< COMPONENT DIAGNOSIS >

[POWER DISTRIBUTION SYSTEM]

B260A IGNITION RELAY

B260A IGNITION RELAY

Description

INFOID:0000000000964217

BCM turns ON the following relays to ignition power supply to each ECU when the ignition switch is turned
ON.
• Ignition relay (inside fuse box)
• Ignition relay (inside IPDM E/R)
• Blower fan motor relay
BCM checks any ignition relay ON request for consistency with the actual ignition relay operation status.

DTC Logic

INFOID:0000000000964218

DTC DETECTION LOGIC

NOTE:
• If DTC B260A is displayed with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to

PCS-46, "DTC Logic"

.

• If DTC B260A is displayed with DTC U1010, first perform the trouble diagnosis for DTC U1010. Refer to

PCS-47, "DTC Logic"

.

• If DTC B260A is displayed with DTC B261A, first perform the trouble diagnosis for DTC B261A. Refer to

SEC-86, "DTC Logic"

.

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

1.

Turn ignition switch ON under the following conditions, and wait for at least 2 seconds.

-

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 

EC-137, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000000964219

1.

CHECK DTC WITH IPDM E/R

Check “Self diagnostic result” with CONSULT-III. Refer to 

PCS-31, "DTC Index"

.

Is DTC detected ?

YES

>> Repair or replace.

NO

>> GO TO 2.

2.

CHECK  IGNITION RELAY INPUT SIGNAL

1.

Turn ignition switch OFF.

2.

Disconnect BCM harness connector M121.

3.

Check voltage between BCM harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 4.

DTC No.

Trouble diagnosis 

name

DTC detecting condition

Possible cause

B260A

IGNITION RELAY

BCM detects a difference of signal for 2 second or 
more between the following information.
• Ignition relay (IPDM E/R) operation request
• Ignition relay feedback from IPDM E/R (CAN).

• Harness or connectors

(Ignition relay operation circuit is 
open or shorted.)

• IPDM E/R

BCM

Ground

Voltage [V]

Connector

Terminal

M121

47

Ground

Battery voltage

PCS

B260A IGNITION RELAY

PCS-51

< COMPONENT DIAGNOSIS >

[POWER DISTRIBUTION SYSTEM]

C

D

E

F

G

H

I

J

K

L

B

A

O

P

N

NO

>> GO TO 3.

3.

CHECK IGNITION RELAY (IPDM E/R) CIRCUIT

1.

Disconnect IPDM E/R harness connector E5.

2.

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

3.

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

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair harness or connector.

4.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-39, "Intermittent Incident"

.

>> INSPECTION END

IPDM E/R

BCM

Continuity

Connector

Terminal

Connector

Terminal

E5

27

M121

47

Existed

IPDM E/R

Ground

Continuity

Connector

Terminal

E5

27

Ground

Not existed

PCS-52

< COMPONENT DIAGNOSIS >

[POWER DISTRIBUTION SYSTEM]

B2611 ACC RELAY

B2611 ACC RELAY

Description

INFOID:0000000000964220

BCM turns ON the ACC relay to supply ACC power to each ECU when the power supply position changes to
ACC.
BCM check ACC relay ON request for consistency with the actual ACC relay operation status.

DTC Logic

INFOID:0000000000964221

DTC DETECTION LOGIC

NOTE:
• If DTC B2611 is displayed with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to

PCS-46, "DTC Logic"

 .

• If DTC B2611 is displayed with DTC U1010, first perform the trouble diagnosis for DTC U1010. Refer to

PCS-47, "DTC 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 2 seconds.

-

A/T selector lever is in P or N position

-

Brake not depressed

2.

Check “Self diagnostic result” with CONSULT-III.

Is DTC detected?

YES

>> Go to 

PCS-52, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000000964222

1.

CHECK ACC RELAY FEED BACK INPUT SIGNAL

1.

Turn ignition switch OFF.

2.

Disconnect BCM harness connector M123.

3.

Check voltage between BCM harness connector and ground under the following conditions.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> GO TO 2.

2.

CHECK ACC RELAY POWER SUPPLY CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect ACC relay.

3.

Check voltage between ACC relay harness connector and ground.

DTC No.

Trouble diagnosis 

name

DTC detecting condition

Possible cause

B2611

ACC RELAY

BCM detects a difference of signal for 2 seconds or 
more between the following information.
• ACC relay ON/OFF operation 
• ACC relay feedback.

• Harness or connectors

(ACC relay feed back circuit is 
open or shorted)

BCM

Ground

Condition

Voltage [V]

Connector

Terminal

M123

122

Ground

Ignition switch

OFF

0

ACC

Battery voltage

PCS

B2611 ACC RELAY

PCS-53

< 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 3.

NO

>> Check harness open or short between ACC relay and battery.

3.

CHECK FUSE

Check 10A fuse [No. 19, located fuse block (J/B)].
Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Replace fuse.

4.

CHECK ACC RELAY FEEDBACK CIRCUIT

1.

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

2.

Check continuity between ACC relay harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Repair harness or connector.

5.

CHECK INTERMITTENT

Refer to 

GI-39, "Intermittent Incident"

.

>> INSPECTION END

ACC relay

Ground

Voltage [V]

Terminal

5

Ground

Battery voltage

ACC relay

BCM

Continuity

Terminal

Connector

Terminal

3

M123

122

Existed

ACC relay

Ground

Continuity

Terminal

3

Ground

Not existed

 

 

 

 

 

 

 

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