Infiniti G37 Coupe. Manual - part 1149

B2612 STEERING STATUS

SEC-93

< COMPONENT DIAGNOSIS >

[INTELLIGENT KEY SYSTEM]

C

D

E

F

G

H

I

J

L

M

A

B

SEC

N

O

P

3.

Check continuity between steering lock unit harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 10.

NO

>> Repair harness or connector.

10.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-38, "Intermittent Incident"

.

>> INSPECTION END

Steering lock unit

IPDM E/R

Continuity

Connector

Terminal

Connector

Terminal

M40

3

E5

32

Existed

Steering lock unit

Ground

Continuity

Connector

Terminal

M40

3

Ground

Not existed

SEC-94

< COMPONENT DIAGNOSIS >

[INTELLIGENT KEY SYSTEM]

B2617 STARTER RELAY CIRCUIT

B2617 STARTER RELAY CIRCUIT

Description

INFOID:0000000001700005

Located in IPDM E/R, it runs the starter motor. The starter relay is turned ON by the BCM when the ignition
switch is in START position. IPDM E/R transmits the starter relay ON signal to BCM via CAN communication.

DTC Logic

INFOID:0000000001700006

DTC DETECTION LOGIC

NOTE:
• If DTC B2617 is displayed with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to

SEC-36, "DTC Logic"

.

• If DTC B2617 is displayed with DTC U1010, first perform the trouble diagnosis for DTC U1010. Refer to

SEC-37, "DTC Logic"

.

• If DTC B2617 is displayed with DTC B2611, first perform the trouble diagnosis for DTC B2611. Refer to

PCS-54, "DTC Logic"

.

• If DTC B2617 is displayed with DTC B210E for IPDM E/R, first perform the trouble diagnosis for DTC

B210E. Refer to 

SEC-110, "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.

A/T models

-

A/T selector lever is in the P or N position

-

Do not depress brake pedal

M/T models

-

Do not depress clutch pedal

2.

Check “Self diagnostic result” with CONSULT-III.

Is DTC detected?

YES

>> Go to 

SEC-94, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000001700007

1.

CHECK STARTER RELAY

1.

Turn ignition switch ON.

2.

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

Is the measurement value within the specification.

YES

>> GO TO 3.

NO

>> GO TO 2.

DTC No.

Trouble diagnosis 

name

DTC detecting condition

Possible cause

B2617

STARTER RELAY 
CIRCUIT

An immediate operation of starter relay is request-
ed by BCM, but there is no response for more than 
1 second

• Harness or connectors

(Starter relay circuit is open or short-
ed.)

• IPDM E/R

BCM

Ground

Condition

Voltage (V)

Connector

Terminal

M121

52

Ground

A/T selector lever

N or P position

Battery voltage

Other than above

0

Clutch pedal

Not depressed

0

Depressed

Battery voltage

B2617 STARTER RELAY CIRCUIT

SEC-95

< COMPONENT DIAGNOSIS >

[INTELLIGENT KEY SYSTEM]

C

D

E

F

G

H

I

J

L

M

A

B

SEC

N

O

P

2.

CHECK STARTER RELAY CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect BCM connector M121 and IPDM E/R connector E6.

3.

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

4.

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

Is the inspection result normal?

YES

>> Replace IPDM E/R. Refer to 

PCS-34, "Removal and Installation"

.

NO

>> Repair harness or connector.

3.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-38, "Intermittent Incident"

.

>> INSPECTION END

IPDM E/R

BCM

Continuity

Connector

Terminal

Connector

Terminal

E6

46

M121

52

Existed

IPDM E/R

Ground

Continuity

Connector

Terminal

E6

46

Ground

Not existed

SEC-96

< COMPONENT DIAGNOSIS >

[INTELLIGENT KEY SYSTEM]

B2619 BCM

B2619 BCM

Description

INFOID:0000000001700008

BCM requests IPDM E/R to supply power to steering lock unit. After receiving the power, the steering lock unit
transmits an ON signal to BCM.

DTC Logic

INFOID:0000000001700009

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.

A/T models

-

A/T selector lever is in the P or N position

-

Do not depress brake pedal

M/T models

-

Do not depress clutch pedal

2.

Check “Self diagnostic result” with CONSULT-III.

Is DTC detected?

YES

>> Go to 

SEC-96, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000001700010

1.

INSPECTION START

1.

Turn ignition switch ON.

2.

Check “Self diagnostic result” with CONSULT-III.

3.

Touch “ERASE”.

4.

Perform DTC Confirmation Procedure.
See 

SEC-96, "DTC Logic"

.

Is the DTC B2619 displayed again?

YES

>> Replace BCM. Refer to 

BCS-79, "Removal and Installation"

.

NO

>> INSPECTION END

DTC No.

Trouble diagnosis 

name

DTC detecting condition

Possible cause

B2619

BCM

BCM detects a mismatch between the power sup-
plied to the steering lock unit and the feedback for 
one second or more.

• BCM