Infiniti EX35. Manual - part 1292

SEC-64

< COMPONENT DIAGNOSIS >

[INTELLIGENT KEY SYSTEM]

B2603 SHIFT POSITION STATUS

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace harness or connector.

3.

CHECK CONTROL DEVICE POWER SUPPLY

1.

Disconnect control device (detention switch) connector.

2.

Check voltage between control device (detention switch) harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> GO TO 4.

4.

CHECK CONTROL DEVICE POWER SUPPLY CIRCUIT

1.

Disconnect BCM connector M122.

2.

Check continuity between control device (detention switch) harness connector and BCM harness connec-
tor.

3.

Check continuity between control device (detention switch) harness connector and ground.

Is the inspection result normal?

YES

>> Replace BCM. Refer to 

BCS-84, "Removal and Installation"

.

NO

>> Repair or replace harness or connector.

5.

CHECK CONTROL DEVICE CIRCUIT

1.

Disconnect BCM connector M122 and IPDM E/R connector E6.

2.

Check continuity between control device (detention switch) harness connector and BCM harness connec-
tor.

3.

Check continuity between control device (detention switch) harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> Repair or replace harness or connector.

TCM

Ground

Continuity

Connector

Terminal

F51

9

Not existed

(+)

(–)

Voltage (V)

(Approx.)

Control device (detention switch)

Connector

Terminal

M137

10

Ground

Battery voltage

Control device (detention switch)

BCM

Continuity

Connector

Terminal

Connector

Terminal

M137

10

M122

96

Existed

Control device (detention switch)

Ground

Continuity

Connector

Terminal

M137

10

Not existed

Control device (detention switch)

BCM

Continuity

Connector

Terminal

Connector

Terminal

M137

11

M122

99

Existed

Control device (detention switch)

Ground

Continuity

Connector

Terminal

M137

11

Not existed

B2603 SHIFT POSITION STATUS

SEC-65

< COMPONENT DIAGNOSIS >

[INTELLIGENT KEY SYSTEM]

C

D

E

F

G

H

I

J

L

M

A

B

SEC

N

O

P

6.

CHECK CONTROL DEVICE (DETENTION SWITCH)

Refer to 

SEC-60, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 7.

NO

>> Replace control device. Refer to 

TM-156, "2WD : Removal and Installation"

 (2WD) or 

TM-159,

"AWD : Removal and Installation"

 (AWD).

7.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-38, "Intermittent Incident"

.

>> INSPECTION END

SEC-66

< COMPONENT DIAGNOSIS >

[INTELLIGENT KEY SYSTEM]

B2604 PNP SWITCH

B2604 PNP SWITCH

Description

INFOID:0000000003586555

BCM confirms the shift position with the following 4 signals.
• Selector lever
• P/N position switch
• P position signal from IPDM E/R (CAN)
• P position signal from TCM (CAN)

DTC Logic

INFOID:0000000003586556

DTC DETECTION LOGIC

NOTE:
• If DTC B2604 is displayed with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to

SEC-32, "BCM : DTC Logic"

.

• If DTC B2604 is displayed with DTC U1010, first perform the trouble diagnosis for DTC U1010. Refer to

SEC-34, "BCM : DTC Logic"

.

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

1.

Start the engine under the following conditions and wait for at least 1 second.

-

Selector lever is in the P or N position

-

Do not depress the brake pedal

2.

Check “Self diagnostic result” with CONSULT-III.

Is DTC detected?

YES

>> Go to 

SEC-66, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000003586557

1.

CHECK DTC WITH TCM

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

TM-113, "DTC Index"

.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace the malfunctioning parts.

2.

CHECK PNP SWITCH CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect TCM connector and BCM connector M123.

3.

Check continuity between TCM harness connector and BCM harness connector.

4.

Check continuity between TCM harness connector and ground.

DTC No.

Trouble diagnosis 

name

DTC detecting condition

Possible cause

B2604

PNP SWITCH

BCM detects the following status for 500 ms or 
more when the ignition switch is in the ON position.
• N position input signal exists. Shift position signal 

from TCM does not exist.

• N position input signal does not exist. Shift posi-

tion signal from TCM exists.

• Harness or connectors 

[Park/neutral position (PNP) switch 
circuit is open or shorted.] 

• Park/ neutral position (PNP) switch

TCM

BCM

Continuity

Connector

Terminal

Connector

Terminal

F51

9

M123

140

Existed

B2604 PNP SWITCH

SEC-67

< COMPONENT DIAGNOSIS >

[INTELLIGENT KEY SYSTEM]

C

D

E

F

G

H

I

J

L

M

A

B

SEC

N

O

P

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace harness or connector.

3.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-38, "Intermittent Incident"

.

>> INSPECTION END

TCM

Ground

Continuity

Connector

Terminal

F51

9

Not existed