Nissan Pathfinder (2009 year). Instruction — part 590

SEC-142

< COMPONENT DIAGNOSIS >

[WITHOUT INTELLIGENT KEY SYSTEM]

B2193, P1612 CHAIN OF ECM-IMMU

B2193, P1612 CHAIN OF ECM-IMMU

Description

INFOID:0000000003938534

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:0000000003938535

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:0000000003938536

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 Instruction”.

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

2009 Pathfinder

P1610 LOCK MODE

SEC-143

< COMPONENT DIAGNOSIS >

[WITHOUT INTELLIGENT KEY SYSTEM]

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P1610 LOCK MODE

Description

INFOID:0000000003938537

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:0000000003938538

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:0000000003938539

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-49, "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.

—

2009 Pathfinder

SEC-144

< COMPONENT DIAGNOSIS >

[WITHOUT INTELLIGENT KEY SYSTEM]

POWER SUPPLY AND GROUND CIRCUIT

POWER SUPPLY AND GROUND CIRCUIT

BCM

BCM : Diagnosis Procedure

INFOID:0000000004432102

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

Check continuity between BCM harness connector and ground.

Does continuity exist?

YES

>> Inspection End.

NO

>> Repair or replace harness.

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

BCM

Ground

Continuity

Connector

Terminal

M20

67

Yes

LIIA0915E

2009 Pathfinder

KEY CYLINDER SWITCH

SEC-145

< COMPONENT DIAGNOSIS >

[WITHOUT INTELLIGENT KEY SYSTEM]

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KEY CYLINDER SWITCH

Description

INFOID:0000000003938541

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:0000000003938542

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-145, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000003938543

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

Check voltage between main power window and door lock/unlock
switch connector D7 terminals 4, 6 and ground.

Is the inspection result normal?

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).

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

2009 Pathfinder

SEC-146

< COMPONENT DIAGNOSIS >

[WITHOUT INTELLIGENT KEY SYSTEM]

KEY CYLINDER SWITCH

3.

Check continuity between front door lock assembly LH (key cyl-
inder switch) connector (A) 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-323, "Removal and

Installation"

.

4.

CHECK DOOR KEY CYLINDER HARNESS

Check continuity between main power window and door lock/unlock
switch connector (A) D7 terminals 4, 6 and front door lock assembly
LH (key cylinder switch) connector (B) D14 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

2009 Pathfinder

GLASS HATCH AJAR SWITCH

SEC-147

< COMPONENT DIAGNOSIS >

[WITHOUT INTELLIGENT KEY SYSTEM]

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GLASS HATCH AJAR SWITCH

Description

INFOID:0000000004432103

Detects glass hatch open/close condition.

Component Function Check

INFOID:0000000004432104

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-147, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000004432105

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

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.

Turn ignition switch OFF.

2.

Disconnect glass hatch ajar switch and BCM.

3.

Check continuity between BCM connector (A) M19 terminal 42 and glass hatch ajar switch connector (B)
D503 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

2009 Pathfinder

SEC-148

< COMPONENT DIAGNOSIS >

[WITHOUT INTELLIGENT KEY SYSTEM]

GLASS HATCH AJAR SWITCH

4.

Check continuity between BCM connector (A) M19 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-49, "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

2009 Pathfinder

HORN FUNCTION

SEC-149

< COMPONENT DIAGNOSIS >

[WITHOUT INTELLIGENT KEY SYSTEM]

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HORN FUNCTION

Symptom Table

INFOID:0000000003938545

HAZARD AND HORN REMINDER FUNCTION MALFUNCTION

NOTE:
• Before performing the diagnosis in the following table, check “Work flow”. Refer to

SEC-121, "Work Flow"

.

• If the following symptoms” are detected, check systems shown in the “Diagnosis/service procedure” column

in this order.

Conditions of Vehicle (Operating Conditions)

• “ANSWER BACK FUNCTION” is ON when setting on CONSULT-III.
• Ignition switch is in OFF position.
• All doors are closed.

Symptom

Diagnosis/service procedure

Reference

page

Hazard reminder does not operate by key fob.
(Horn reminder operate.)

1.

Check “HAZARD ANSWER BACK” setting in “WORK
SUPPORT”.

DLK-220

2.

Check hazard function.

EXL-4

3.

Check key fob battery inspection.

DLK-250

Horn reminder does not operate by key fob.
(Hazard reminder operate.)

1.

Check “HORN WITH KEYLESS LOCK” setting in
“WORK SUPPORT”.

DLK-220

2.

Check horn function.

HRN-3

3.

Check Intermittent Incident.

GI-49

2009 Pathfinder