Nissan Pathfinder (2010 year). Manual - part 581

SEC-142

< COMPONENT DIAGNOSIS >

[WITHOUT INTELLIGENT KEY SYSTEM]

B2193, P1612 CHAIN OF ECM-IMMU

B2193, P1612 CHAIN OF ECM-IMMU

Description

INFOID:0000000005259064

BCM performs the ID verification with ECM that allows the engine to start. BCM starts the communication with

ECM if ignition switch is turned ON and starts the engine if the ID is OK. ECM prevents the engine from start-

ing if the ID is not registered.

DTC Logic

INFOID:0000000005259065

DTC DETECTION LOGIC

NOTE:

• If DTC B2193 is displayed with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to

SEC-134, "DTC Logic"

.

• If DTC B2193 is displayed with DTC U1010, first perform the trouble diagnosis for DTC U1010. Refer to

SEC-135, "DTC Logic"

.

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

1. Turn ignition switch ON.

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

YES

>> Refer to 

SEC-142, "Diagnosis Procedure"

.

NO

>> Inspection End.

Diagnosis Procedure

INFOID:0000000005259066

1.

REPLACE BCM

1. Replace BCM. Refer to 

BCS-59, "Removal and Installation"

.

2. Perform initialization with CONSULT-III.

For initialization, refer to “CONSULT-III Operation Manual”.

Does the engine start?

YES

>> BCM was malfunctioning.

NO

>> ECM is malfunctioning.

• Replace ECM.

• Perform ECM re-communicating function.

DTC No.

Trouble diagnosis 

name

DTC detecting condition

Possible cause

B2193

CHAIN OF BCM-
ECM

Inactive communication between ECM and BCM

• Harness or connectors

(The CAN communication line is 
open or short)

• BCM
• ECM

P1612

2010 Pathfinder

P1610 LOCK MODE

SEC-143

< COMPONENT DIAGNOSIS >

[WITHOUT INTELLIGENT KEY SYSTEM]

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P1610 LOCK MODE

Description

INFOID:0000000005259067

When the starting operation is carried more than five times consecutively under the following conditions, NATS

will shift to the mode which prevents the engine from being started.

• Unregistered mechanical key is used.

• BCM or ECM's malfunctioning.

DTC Logic

INFOID:0000000005259068

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

1. Turn ignition switch ON.

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

YES

>> Refer to 

SEC-143, "Diagnosis Procedure"

.

NO

>> Inspection End.

Diagnosis Procedure

INFOID:0000000005259069

1.

CHECK ENGINE START FUNCTION

1. Perform the check for DTC except DTC P1610.

2. Use CONSULT-III to erase DTC after fixing.

3. Check that engine can start with registered mechanical key.
Does the engine start?

YES

>> Inspection End.

NO

>> GO TO 2

2.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-37, "Intermittent Incident"

.

>> Inspection End.

DTC No.

Trouble diagnosis 

name

DTC detecting condition

Possible cause

P1610

LOCK MODE

When the starting operation is carried out 
five or more times consecutively under the 
following conditions.
• Unregistered mechanical key
• BCM or ECM's malfunctioning.

—

2010 Pathfinder

SEC-144

< COMPONENT DIAGNOSIS >

[WITHOUT INTELLIGENT KEY SYSTEM]

POWER SUPPLY AND GROUND CIRCUIT

POWER SUPPLY AND GROUND CIRCUIT

BCM
BCM : Diagnosis Procedure

INFOID:0000000005520621

Regarding Wiring Diagram information, refer to 

BCS-50, "Wiring Diagram"

.

1.

 CHECK FUSES AND FUSIBLE LINK

Check that the following fuses and fusible link are not blown.

Is the fuse blown?

YES

>> Replace the blown fuse or fusible link after repairing the affected circuit.

NO

>> GO TO 2

2.

 CHECK POWER SUPPLY CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect BCM.

3. Check voltage between BCM harness connector and ground.

Is the measurement value normal?

YES

>> GO TO 3

NO

>> Repair or replace harness.

3.

 CHECK GROUND CIRCUIT

Terminal No.

Signal name

Fuses and fusible link No.

57

Battery power supply

18 (10A)

70

G (50A)

11

Ignition ACC or ON

4 (10A)

38

Ignition ON or START

1 (10A)

Connector

Terminals 

Power

source

Condition

Voltage (V) (Ap-

prox.)

(+)

(-)

M18

11

Ground

ACC 

power 

supply

Ignition 

switch 

ACC or 

ON

Battery voltage

38

Ground

Ignition 

power 

supply

Ignition 

switch ON 

or START

Battery voltage

M20

57

Ground

Battery 

power 

supply

Ignition 

switch 

OFF

Battery voltage

70

Ground

Battery 

power 

supply

Ignition 

switch 

OFF

Battery voltage

LIIA2415E

2010 Pathfinder

POWER SUPPLY AND GROUND CIRCUIT

SEC-145

< COMPONENT DIAGNOSIS >

[WITHOUT INTELLIGENT KEY SYSTEM]

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Check continuity between BCM harness connector and ground.

Does continuity exist?

YES

>> Inspection End.

NO

>> Repair or replace harness.

BCM

Ground

Continuity

Connector

Terminal

M20

67

Yes

LIIA0915E

2010 Pathfinder

SEC-146

< COMPONENT DIAGNOSIS >

[WITHOUT INTELLIGENT KEY SYSTEM]

KEY CYLINDER SWITCH

KEY CYLINDER SWITCH

Description

INFOID:0000000005259071

The main power window and door lock/unlock switch detects condition of the door key cylinder switch and

transmits to BCM as the LOCK or UNLOCK signal. 

Component Function Check

INFOID:0000000005259072

1.

CHECK DOOR KEY CYLINDER SWITCH INPUT SIGNAL

Check "KEY CYL LK-SW" AND "KEY CYL UN-SW" in DATA MONITOR mode for “POWER DOOR LOCK

SYSTEM” with CONSULT-III.

Is the inspection result normal?

YES

>> Key cylinder switch is OK.

NO

>> Refer to 

SEC-146, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000005259073

Regarding Wiring Diagram information, refer to 

SEC-166, "Wiring Diagram - VEHICLE SECURITY SYSTEM"

.

1.

CHECK DOOR KEY CYLINDER SWITCH LH

With CONSULT-III

Check front door lock assembly LH (key cylinder switch) ("KEY CYL LK-SW") and ("KEY CYL UN-SW) in

DATA MONITOR mode with CONSULT–III.

• When key inserted in left front key cylinder is turned to LOCK:

• When key inserted in left front key cylinder is turned to UNLOCK:

Without CONSULT-III

1. Turn ignition switch OFF.

2. Check voltage between main power window and door lock/

unlock switch connector D7 terminals 4, 6 and ground.

Is the inspection result normal?

Monitor item

Condition

KEY CYL LK-SW

Lock

: ON

Neutral / Unlock

: OFF

KEY CYL UN-SW

Unlock

: ON

Neutral / Lock

: OFF

KEY CYL LK-SW

: ON

KEY CYL UN-SW

: ON

Connector

Terminals

Condition of left front key cylinder

Voltage (V)

(Approx.)

(+)

(–)

D7

4

Ground

Neutral/Unlock

5

Lock

0

6

Neutral/Lock

5

Unlock

0

LIIA0566E

2010 Pathfinder

KEY CYLINDER SWITCH

SEC-147

< COMPONENT DIAGNOSIS >

[WITHOUT INTELLIGENT KEY SYSTEM]

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YES

>> Key cylinder switch signal is OK.

NO

>> GO TO 2

2.

CHECK DOOR KEY CYLINDER SWITCH LH GROUND HARNESS

1. Turn ignition switch OFF.

2. Disconnect front door lock assembly LH (key cylinder switch).

3. Check continuity between front door lock assembly LH (key cyl-

inder switch) connector D14 terminal 4 and body ground.

Is the inspection result normal?

YES

>> GO TO 3

NO

>> Repair or replace harness.

3.

CHECK DOOR KEY CYLINDER SWITCH LH

Check continuity between front door lock assembly LH (key cylinder

switch) terminals.

Is the inspection result normal?

YES

>> GO TO 4

NO

>> Replace front door lock assembly LH (key cylinder switch). Refer to 

DLK-322, "Removal and

Installation"

.

4.

CHECK DOOR KEY CYLINDER HARNESS

Check continuity between main power window and door lock/unlock switch connector D7 (

A) terminals 4, 6 and front door lock assembly LH (key cylinder

switch) connector D14 (B) terminals 3, 5 and body ground. 

Is the inspection result normal?

YES

>> Replace main power window and door lock/unlock switch.

NO

>> Repair or replace harness.

Connector

Terminals

Continuity

D14

4 – Ground

Yes

ALKIA1186ZZ

Terminals

Condition

Continuity

3 – 4

Key is turned to LOCK or neutral.

No

Key is turned to UNLOCK.

Yes

4 – 5

Key is turned to UNLOCK or neutral.

No

Key is turned to LOCK.

Yes

ALKIA1183ZZ

Connector

Terminals

Connector

Terminals

Continuity

A: Main 

power win-

dow and 

door lock/

unlock 

switch

4

B: Front 

door lock 

assembly 

LH (key 
cylinder 

switch)

5

Yes

6

3

Yes

4, 6

Ground

No

ALKIA1184ZZ

2010 Pathfinder

SEC-148

< COMPONENT DIAGNOSIS >

[WITHOUT INTELLIGENT KEY SYSTEM]

GLASS HATCH AJAR SWITCH

GLASS HATCH AJAR SWITCH

Description

INFOID:0000000005259074

Detects glass hatch open/close condition.

Component Function Check

INFOID:0000000005259075

1.

CHECK FUNCTION

With CONSULT-III

Check glass hatch switch in data monitor mode with CONSULT-III.

Is the inspection result normal?

YES

>> Glass hatch switch is OK.

NO

>> Refer to 

SEC-148, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000005259076

Regarding Wiring Diagram information, refer to 

SEC-166, "Wiring Diagram - VEHICLE SECURITY SYSTEM"

.

1.

CHECK GLASS HATCH AJAR SWITCH INPUT SIGNAL

With CONSULT-III

Check glass hatch ajar switch "GLASS HATCH SW" in DATA MONITOR mode with CONSULT–III.

• When glass hatch is open:

• When glass hatch is closed:

Without CONSULT-III

1. Turn ignition switch OFF.

2. Check voltage between BCM connector M19 terminals 42 and ground.

Is the inspection result normal?

YES

>> Glass hatch ajar switch circuit is OK.

NO

>> GO TO 2

2.

CHECK GLASS HATCH AJAR SWITCH CIRCUIT

1. Disconnect glass hatch ajar switch and BCM.

2. Check continuity between BCM connector M19 (A) terminal 42 and glass hatch ajar switch connector

D503 (B) terminal 1.

Monitor item

Condition

GLASS HATCH SW

CLOSE 

→

 OPEN: OFF 

→

 ON

GLASS HATCH SW

:ON

GLASS HATCH SW

:OFF

Connector

Item

Terminals

Condition

Voltage (V)

(Approx.)

( + )

( – )

M19

BCM

42

Ground

Open

↓

Closed

0

↓

Battery voltage

ALKIA1708ZZ

2010 Pathfinder

GLASS HATCH AJAR SWITCH

SEC-149

< COMPONENT DIAGNOSIS >

[WITHOUT INTELLIGENT KEY SYSTEM]

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3. Check continuity between BCM connector M19 (A) terminal 42

and ground.

Is the inspection result normal?

YES

>> GO TO 3

NO

>> Repair or replace harness.

3.

CHECK GLASS HATCH AJAR SWITCH

Check continuity between glass hatch ajar switch connector terminal 1 and ground.

Is the inspection result normal?

YES

>> Refer to 

GI-37, "Intermittent Incident"

.

NO

>> Replace glass hatch ajar switch.

42 - 1

:Continuity should exist

42 - Ground

:Continuity should not exist

ALKIA1709ZZ

Terminals

Condition

Continuity

Glass hatch ajar 

switch 

1 – Ground

Open

Yes

Closed

No

ALKIA0668ZZ

2010 Pathfinder