Nissan Maxima. Manual - part 1059

B2605 TRANSMISSION RANGE SWITCH

SEC-61

< DTC/CIRCUIT DIAGNOSIS >

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B2605 TRANSMISSION RANGE SWITCH

Description

INFOID:0000000010051972

BCM confirms the shift position with the following 4 signals.

• CVT selector lever

• Transmission range switch

• P position signal from IPDM E/R (CAN)

• P position signal from TCM (CAN)

DTC Logic

INFOID:0000000010051973

DTC DETECTION LOGIC

NOTE:

• If DTC B2605 is displayed with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to

SEC-29, "DTC Logic"

.

• If DTC B2605 is displayed with DTC U1010, first perform the trouble diagnosis for DTC U1010. Refer to

SEC-30, "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.

-

CVT selector lever is in the P or N position

-

Do not depress the brake pedal.

2. Check “Self diagnostic result” with CONSULT.
Is DTC detected?

YES

>> Refer to 

SEC-61, "Diagnosis Procedure"

.

NO

>> Inspection End.

Diagnosis Procedure

INFOID:0000000010051974

Regarding Wiring Diagram information, refer to 

SEC-147, "Wiring Diagram"

 or 

SEC-128, "Wiring Diagram"

.

1.

CHECK DTC WITH IPDM E/R

Check “Self diagnostic result” with CONSULT. Refer to 

PCS-27, "DTC Index"

.

Is the inspection result normal?

YES

>> GO TO 2

NO

>> Repair or replace malfunctioning parts.

2.

CHECK TRANSMISSION RANGE SWITCH CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect TCM harness connector and BCM harness connector.

DTC No.

Trouble diagnosis 

name

DTC detecting condition

Possible cause

B2605

TRANSMISSION 
RANGE SWITCH

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

from IPDM E/R does not exist.

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

tion signal from IPDM E/R exists.

• Harness or connectors

[The transmission range switch cir-
cuit is open or shorted.]

• Transmission range switch
• IPDM  E/R

SEC-62

< DTC/CIRCUIT DIAGNOSIS >

B2605 TRANSMISSION RANGE SWITCH

3. Check continuity between TCM connector F15 (A) terminal 20

and BCM harness connector M18 (B) terminal 48.

4. Check continuity between TCM harness connector F15 (A) ter-

minal 20 and ground.

Is the inspection result normal?

YES

>> GO TO 3

NO

>> Repair harness or connector.

3.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-41, "Intermittent Incident"

.

>> Inspection End.

TCM

BCM

Continuity

Connector

Terminal

Connector

Terminal

A: F15

20

B: M18

48

Yes

TCM

Ground

Continuity

Connector

Terminal

A: F15

20

Ground

No

ALKIA1317ZZ

B2608 STARTER RELAY

SEC-63

< DTC/CIRCUIT DIAGNOSIS >

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B2608 STARTER RELAY

Description

INFOID:0000000010051975

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:0000000010051976

DTC DETECTION LOGIC

NOTE:

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

SEC-29, "DTC Logic"

.

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

SEC-30, "DTC Logic"

.

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

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

-

CVT selector lever is in the P or N position.

-

Depress the brake pedal.

2. Check “Self diagnostic result” with CONSULT.
Is DTC detected?

YES

>> Refer to 

SEC-63, "Diagnosis Procedure"

.

NO

>> Inspection End.

Diagnosis Procedure

INFOID:0000000010051977

Regarding Wiring Diagram information, refer to 

SEC-147, "Wiring Diagram"

 or 

SEC-128, "Wiring Diagram"

.

1.

CHECK STARTER RELAY

1. Turn ignition switch ON.

2. Check voltage between BCM harness connector and ground

under the following condition.

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

ALKIA0452ZZ

SEC-64

< DTC/CIRCUIT DIAGNOSIS >

B2608 STARTER RELAY

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 M21 and IPDM E/R harness connector E17.

3. Check continuity between IPDM E/R harness connector E17 (A)

terminal 46 and BCM harness connector M21 (B) terminal 132.

4. Check continuity between IPDM E/R harness connector E17 (A)

terminal 46 and ground.

Is the inspection result normal?

YES

>> Replace IPDM E/R. Refer to 

PCS-35, "Removal and Installation"

.

NO

>> Repair harness or connector.

3.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-41, "Intermittent Incident"

.

>> Inspection End.

BCM

Ground

Condition

Voltage (V)

Connector

Terminal

M21

132

Ground

CVT selector lever

N or P position

Battery voltage

Other than above

0

IPDM E/R

BCM

Continuity

Connector

Terminal

Connector

Terminal

A: E17

46

B: M21

132

Yes

IPDM E/R

Ground

Continuity

Connector

Terminal

A: E17

46

Ground

No

ALKIA1318ZZ