Infiniti G35 (V35) Sedan. Manual - part 1178

B2607 STEERING LOCK RELAY

SEC-67

< COMPONENT DIAGNOSIS >

[INTELLIGENT KEY SYSTEM]

C

D

E

F

G

H

I

J

L

M

A

B

SEC

N

O

P

1.

Turn ignition switch OFF.

2.

Disconnect IPDM E/R harness connector.

3.

Check continuity between steering lock unit and IPDM E/R harness connector.

4.

Check continuity between steering lock unit and ground.

Is the inspection result normal?

YES

>> Replace IPDM E/R. Refer to 

PCS-33, "Removal and Installation"

.

NO

>> Repair harness or connector.

4.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-39, "Intermittent Incident"

.

>> INSPECTION END.

Steering lock unit

IPDM E/R

Continuity

Connector

Terminal

Connector

Terminal

M40

1

E5

11

Existed

Steering lock unit

Ground

Continuity

Connector

Terminal

M40

1

Ground

Not existed

SEC-68

< COMPONENT DIAGNOSIS >

[INTELLIGENT KEY SYSTEM]

B2608 STARTER RELAY

B2608 STARTER RELAY

Description

INFOID:0000000000961392

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:0000000000961393

DTC DETECTION LOGIC

NOTE:
• If DTC B2608 is displayed with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to

SEC-35, "DTC Logic"

.

• If DTC B2608 is displayed with DTC U1010, first perform the trouble diagnosis for DTC U1010. Refer to

SEC-36, "DTC Logic"

.

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

1.

Press the push-button ignition switch under the following conditions.

-

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

-

Depress the brake pedal.

2.

Check “Self diagnostic result” with CONSULT-III.

Is DTC detected?

YES

>> Go to 

SEC-68, "Diagnosis Procedure"

.

NO

>> INSPECTION END.

Diagnosis Procedure

INFOID:0000000000961394

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.

2.

CHECK STARTER RELAY CIRCUIT

1.

Turn ignition switch OFF.

2.

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

3.

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

DTC No.

Trouble diagnosis 

name

DTC detecting condition

Possible cause

B2608

STARTER RELAY

BCM receives starter relay ON signal (CAN) from 
IPDM E/R even if BCM turns the starter relay OFF

• Harness or connectors 

(starter relay circuit is open or 
shorted.)

• 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

B2608 STARTER RELAY

SEC-69

< COMPONENT DIAGNOSIS >

[INTELLIGENT KEY SYSTEM]

C

D

E

F

G

H

I

J

L

M

A

B

SEC

N

O

P

4.

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

Is the inspection result normal?

YES

>> Replace IPDM E/R. Refer to 

PCS-33, "Removal and Installation"

.

NO

>> Repair harness or connector.

3.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-39, "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-70

< COMPONENT DIAGNOSIS >

[INTELLIGENT KEY SYSTEM]

B2609 STEERING STATUS

B2609 STEERING STATUS

Description

INFOID:0000000000961395

There are 2 switches in the steering lock unit (steering lock/unlock switch 1 and 2). BCM compares those two
switches conditions to judge the present steering status.

DTC Logic

INFOID:0000000000961396

DTC DETECTION LOGIC

NOTE:
• If DTC B2609 is displayed with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to

SEC-35, "DTC Logic"

.

• If DTC B2609 is displayed with DTC U1010, first perform the trouble diagnosis for DTC U1010. Refer to

SEC-36, "DTC Logic"

.

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE 1

1.

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

-

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

-

Do not depress brake pedal

-

Steering is locked

2.

Check “Self diagnostic result” with CONSULT-III.

Is DTC detected?

YES

>> Go to 

SEC-70, "Diagnosis Procedure"

.

NO

>> GO TO 2.

2.

PERFORM DTC CONFIRMATION PROCEDURE 2

1.

Turn ignition switch ON.

2.

Turn ignition switch OFF.

3.

Press door switch.

4.

Check “Self diagnostic result” with CONSULT-III.

Is DTC detected?

YES

>> Go to 

SEC-70, "Diagnosis Procedure"

.

NO

>> INSPECTION END.

Diagnosis Procedure

INFOID:0000000000961397

1.

INSPECTION START

Check the case in which DTC is detected.
• Case1: It is detected after ignition switch is changed from ON to OFF and door switch is pressed
• Case2: It is detected after ignition switch is changed from ON to OFF

In which case is DTC detected?

Case1 >> GO TO 2.
Case2 >> GO TO 7.

2.

CHECK BCM OUTPUT SIGNAL

DTC No.

Trouble diagnosis 

name

DTC detecting condition

Possible cause

B2609

STEERING STATUS

BCM detects the malfunction of steering lock unit 
switches for 1 second.

• Harness or connectors

[steering lock unit circuit (BCM 
side) is open or shorted]

• Harness or connectors

[steering lock unit circuit (IPDM E/
R side) is open or shorted.]

• Steering lock unit 
• IPDM E/R