Nissan Xterra. Manual - part 201

DLK-46

< DTC/CIRCUIT DIAGNOSIS >

KEYFOB BATTERY AND FUNCTION

KEYFOB BATTERY AND FUNCTION

Description

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The following functions are available when having and carrying electronic ID.

• Door lock/unlock

• Panic alarm

Remote control entry function and panic alarm function are available when operating the remote buttons.

Component Function Check

INFOID:0000000009485056

NOTE:

The Signal Tech II Tool (J-50190) can be used to test the remote keyless entry keyfob relative signal strength.

Refer to the Signal Tech II User Guide for additional information.

1.

CHECK FUNCTION

 With CONSULT

Check remote keyless entry receiver "MULTI REMOTE ENT" in Data Monitor mode with CONSULT. Refer to

BCS-18, "MULTI REMOTE ENT : CONSULT Function (BCM - MULTI REMOTE ENT)"

.

Is the inspection result normal?

YES

>> Key fob is OK.

NO

>> Refer to 

DLK-46, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000009485057

NOTE:

The Signal Tech II Tool (J-50190) can be used to test the remote keyless entry keyfob relative signal strength.

Refer to the Signal Tech II User Guide for additional information.

1.

CHECK KEYFOB FUNCTION

Check keyfob function using Signal Tech II Tool J-50190 or Remote

Keyless Entry Tester J-43241 (shown).
Does the test pass?

YES

>> Key fob is OK. 

NO

>> GO TO 2

2.

 CHECK KEY FOB COMPONENTS

Monitor item

Condition

KEYLESS LOCK

Indicates condition of lock signal from keyfob.

KEYLESS UNLOCK

Indicates condition of unlock signal from keyfob.

KEYLESS PANIC

Indicates condition of panic signal from keyfob.

LEL946A

KEYFOB BATTERY AND FUNCTION

DLK-47

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1. Open the lid using a coin.

CAUTION:

• Do not touch the circuit board or battery terminal.

• The keyfob is water-resistant. However, if it does get wet,

immediately wipe it dry. 

2. Remove the key fob battery.

CAUTION:

• Keep dirt, grease, and other foreign materials off the elec-

trode contact area.

3. Visually inspect keyfob internal components.
Is the inspection result normal?

YES

>> GO TO 3

NO

>> Repair or replace malfunctioning parts.

3.

CHECK KEY FOB BATTERY

Check by connecting a resistance (approximately 300

Ω) so that the

current value becomes about 10 mA.

Is the measurement value within specification?

YES

>> Key fob battery is OK. Check remote keyless entry

receiver. Refer to 

DLK-43,

"Component Function Check"

. 

NO

>> GO TO 4

4.

 REPLACE KEY FOB BATTERY

1. Replace the key fob battery, positive side down.

2. Align the tips of the upper and lower parts, and then push them

together until it is securely closed.

CAUTION:

• When replacing battery, keep dirt, grease, and other for-

eign materials off the electrode contact area.

3. After replacing the battery, check that all key fob functions work

properly.

Is the inspection result normal?

YES

>> Key fob is OK.

NO

>> Check remote keyless entry receiver. Refer to 

DLK-43,

"Component Function Check"

.

ALKIA1720GB

Standard

: Approx. 2.5 - 3.0V

OCC0607D

ALKIA1721GB

DLK-48

< DTC/CIRCUIT DIAGNOSIS >

HORN FUNCTION

HORN FUNCTION

Description

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Perform answer-back for each operation with horn.

Component Function Check

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1.

CHECK FUNCTION

1. Select "HORN" in “ACTIVE TEST” mode with CONSULT.

2. Check the horn (high/low) operation.

Is the operation normal?

YES

>> Inspection End.

NO

>> Refer to 

DLK-48, "Diagnosis Procedure"

.

Diagnosis Procedure

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Regarding Wiring Diagram information, refer to 

DLK-81, "Wiring Diagram"

.

1.

CHECK HORN FUNCTION

Check horn function with horn switch.
Does the horn sound?

YES

>> GO TO 2

NO

>> Refer to 

HRN-3, "Wiring Diagram"

.

2.

CHECK HORN RELAY POWER SUPPLY

1. Turn ignition switch ON.

2. Perform “ACTIVE TEST”, "HORN" with CONSULT.

3. Using an oscilloscope or analog voltmeter, check voltage

between IPDM E/R connector E122 terminal 45 and ground.

Is the inspection result normal?

YES

>> Repair harness for open between IPDM E/R and horn relay.

NO

>> GO TO 3

3.

CHECK HORN RELAY CIRCUIT

1. Turn ignition switch OFF.

Test item

Description

HORN

ON

Horn relay

ON (for 20 ms)

WIIA1251E

IPDM E/R

Ground

Test item

Voltage (V)

(Approx.)

Connector

Terminal

E122

45

Ground

HORN

OFF 

→ ON → OFF

Battery voltage 

→ 0 → Battery voltage

Other than above

Battery voltage

HORN FUNCTION

DLK-49

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2. Disconnect IPDM E/R and horn relay connector.

3. Check continuity between IPDM E/R harness connector and

horn relay harness connector.

4. Check continuity between IPDM E/R harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 4

NO

>> Repair or replace harness.

4.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-40, "Intermittent Incident"

.

Is the inspection result normal?

YES

>> Replace IPDM E/R. Refer to 

PCS-27, "Removal and Installation"

.

NO

>> Repair or replace the malfunctioning part.

WIIA1252E

IPDM E/R

Horn relay

Continuity

Connector

Terminal

Connector

Terminal

A: E122

45

B: H-1

1

Yes

IPDM E/R

Ground

Continuity 

Connector

Terminal

E122

45

Ground

No