Nissan Titan. Manual - part 530

SEC-32

< DTC/CIRCUIT DIAGNOSIS >

KEY CYLINDER SWITCH

1. Disconnect main power window and door lock/unlock switch.

2. 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 termi-

nals 1, 6 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

Connector

Terminals

Continuity

A: Main 

power win-

dow and 

door lock/

unlock 

switch

4

B:  Front 

door lock 

assembly 

LH (key 
cylinder 

switch)

1

Yes

6

6

Yes

4, 6

Ground

No

WIIA0756E

HORN FUNCTION

SEC-33

< DTC/CIRCUIT DIAGNOSIS >

C

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HORN FUNCTION

Description

INFOID:0000000009878894

Perform answer-back for each operation with horn.

Component Function Check

INFOID:0000000009878895

1.

CHECK FUNCTION

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

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

Is the operation normal?

YES

>> Inspection End.

NO

>> Go to 

SEC-33, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000009878896

Regarding Wiring Diagram information, refer to 

SEC-54, "Wiring Diagram"

.

1.

CHECK HORN FUNCTION

Check horn function with horn switch
Do the horns 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”, "VEHICLE SECURITY HORN" with CONSULT.

3. Using an oscilloscope or analog voltmeter, check voltage

between horn relay harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 4

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)

ALKIA0658ZZ

Horn relay

Ground

Test item

Voltage (V)

(Approx.)

Connector

Terminal

H-1

1

Ground

HORN

ON

Battery voltage 

→ 0 → Battery voltage

Other than above

Battery voltage

SEC-34

< DTC/CIRCUIT DIAGNOSIS >

HORN FUNCTION

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-42, "Intermittent Incident"

.

Is the inspection result normal?

YES

>> Replace IPDM E/R. Refer to 

PCS-28, "Removal and Installation of IPDM E/R"

.

NO

>> Repair or replace the malfunctioning part.

WIIA0679E

IPDM E/R

Horn relay

Continuity

Connector

Terminal

Connector

Terminal

E122

45

H-1

1

Yes

IPDM E/R

Ground

Continuity 

Connector

Terminal

E122

45

Ground

No

VEHICLE SECURITY INDICATOR

SEC-35

< DTC/CIRCUIT DIAGNOSIS >

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VEHICLE SECURITY INDICATOR

Description

INFOID:0000000009878897

• Vehicle security indicator is built in combination meter.

• NATS (Nissan Anti-Theft System) and vehicle security system conditions are indicated by blink or illumina-

tion of vehicle security indicator.

Component Function Check

INFOID:0000000009878898

1.

CHECK FUNCTION

1. Perform “THEFT IND” in the “Active Test” mode with CONSULT.

2. Check vehicle security indicator operation.

Is the inspection result normal?

YES

>> Inspection End.

NO

>> Refer to 

SEC-35, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000009878899

Regarding Wiring Diagram information, refer to 

SEC-54, "Wiring Diagram"

.

1.

SECURITY INDICATOR LAMP ACTIVE TEST

With CONSULT

Check "THEFT IND” in "ACTIVE TEST" mode with CONSULT.

Without CONSULT

1. Disconnect BCM.

2. Check voltage between BCM harness connector M18 terminal

23 and ground.

Is the inspection result normal?

YES

>> Security indicator lamp is OK.

NO

>> GO TO 2

2.

SECURITY INDICATOR LAMP CHECK

Check security indicator lamp condition.
Is the inspection result normal?

YES

>> GO TO 3

NO

>> Replace security indicator lamp.

3.

CHECK HARNESS CONTINUITY

1. Turn ignition switch OFF.

2. Disconnect BCM and security indicator lamp connector.

Test item

Description

THEFT IND

ON

Vehicle security indicator

ON

OFF

OFF

Connector

Terminals

Condition

Voltage (V)

(Approx.)

(+)

(-)

M18

23

Ground

ON

0

OFF

Battery voltage

LIIA0523E