Infiniti EX35. Manual - part 1291

SEC-60

< COMPONENT DIAGNOSIS >

[INTELLIGENT KEY SYSTEM]

B2601 SHIFT POSITION

6.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-38, "Intermittent Incident"

.

>> INSPECTION END

Component Inspection

INFOID:0000000003586548

1.

CHECK CONTROL DEVICE (DETENTION SWITCH)

1.

Turn ignition switch OFF.

2.

Disconnect control device connector.

3.

Check continuity between control device (detention switch) terminals.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace control device. Refer to 

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

 (2WD) or 

TM-159,

"AWD : Removal and Installation"

 (AWD).

Control device (detention switch)

Condition

Continuity

Terminal

10

11

Selector lever

P position

Not existed

Other than above

Existed

B2602 SHIFT POSITION

SEC-61

< COMPONENT DIAGNOSIS >

[INTELLIGENT KEY SYSTEM]

C

D

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F

G

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A

B

SEC

N

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B2602 SHIFT POSITION

Description

INFOID:0000000003586549

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:0000000003586550

DTC DETECTION LOGIC

NOTE:
• If DTC B2602 is displayed with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to

SEC-32, "BCM : DTC Logic"

.

• If DTC B2602 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 10 seconds.

-

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-61, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000003586551

1.

CHECK DTC WITH “ABS ACTUATOR AND ELECTRIC UNIT”

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

BRC-95, "DTC No. Index"

.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace the malfunctioning parts.

2.

CHECK CONTROL DEVICE POWER SUPPLY

1.

Turn ignition switch OFF.

2.

Disconnect control device (detention switch) connector.

3.

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

Is the inspection result normal?

YES

>> GO TO 4.

DTC No.

Trouble diagnosis 

name

DTC detecting condition

Possible cause

B2602

SHIFT POSITION

BCM detects the following status for 10 seconds.
• Shift position is in P position
• Vehicle speed is 4 km/h (2.5 MPH) or more
• Ignition switch is in the ON position

• Harness or connectors 

(Control device circuit is open or 
shorted)

• Control device (detention switch)
• ABS actuator and electric unit 

(control unit)

(+)

(–)

Voltage (V)

(Approx.)

Control device (detention switch)

Connector

Terminal

M137

10

Ground

Battery voltage

SEC-62

< COMPONENT DIAGNOSIS >

[INTELLIGENT KEY SYSTEM]

B2602 SHIFT POSITION

NO

>> GO TO 3.

3.

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.

4.

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 5.

NO

>> Repair or replace harness or connector.

5.

CHECK CONTROL DEVICE (DETENTION SWITCH)

Refer to 

SEC-60, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> Replace control device. Refer to 

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

 (2WD) or 

TM-159,

"AWD : Removal and Installation"

 (AWD).

6.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-38, "Intermittent Incident"

.

>> INSPECTION END

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

No 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

No existed

B2603 SHIFT POSITION STATUS

SEC-63

< COMPONENT DIAGNOSIS >

[INTELLIGENT KEY SYSTEM]

C

D

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F

G

H

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SEC

N

O

P

B2603 SHIFT POSITION STATUS

Description

INFOID:0000000003586552

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:0000000003586553

DTC DETECTION LOGIC

NOTE:
• If DTC B2603 is displayed with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to

SEC-32, "BCM : DTC Logic"

.

• If DTC B2603 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 position.

-

Do not depress the brake pedal.

2.

Check “Self diagnostic result” with CONSULT-III.

Is DTC detected?

YES

>> Go to 

SEC-63, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000003586554

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

Self-diagnosis name

DTC detecting condition

Possible causes

B2603

SHIFT POSITION 
STATUS

BCM detects the followings status for 500 ms or 
more when shift is in P position, and ignition switch 
is in ON position.
• Park/neutral position (PNP) switch: approx. 0V
• Control device (detention switch): approx. 0V

• Harness or connector

(Control device circuit is open or short-
ed.)

• Harness or connectors

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

• Control device (detention switch)
• Park/neutral position (PNP) switch

TCM

BCM

Continuity

Connector

Terminal

Connector

Terminal

F51

9

M123

140

Existed