Infiniti G37 Coupe. Manual — part 1158

HOOD SWITCH

SEC-129

< COMPONENT DIAGNOSIS >

[INTELLIGENT KEY SYSTEM]

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HOOD SWITCH

Description

INFOID:0000000001700057

Hood switch is built into hood lock (RH) and connected to IPDM E/R which detects the open/close condition of
hood.

Component Function Check

INFOID:0000000001700058

1.

CHECK FUNCTION

1.

Select “HOOD SW” in “Data Monitor” mode with CONSULT-III.

2.

Check the hood switch signal under the following condition.

Is the indication normal?

YES

>> Hood switch is OK.

NO

>> Go to

SEC-129, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000001700059

1.

CHECK HOOD SWITCH SIGNAL

1.

Turn ignition switch OFF.

2.

Check voltage between IPDM E/R harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> GO TO 2.

2.

CHECK HOOD SWITCH CIRCUIT

1.

Disconnect IPDM E/R connector E9 and hood switch connector.

2.

Check continuity between IPDM E/R harness connector and hood switch harness connector.

3.

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

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace harness.

3.

CHECK IPDM E/R OUTPUT

1.

Connect IPDM E/R connector.

2.

Check voltage between IPDM E/R harness connector and ground.

Test item

Condition

Status

HOOD SW

Hood

Open

ON

Close

OFF

IPDM E/R

Ground

Condition

Voltage (V)

(Approx.)

Connector

Terminal

E9

104

Ground

Hood

Open

0

Close

Battery voltage

IPDM E/R

Hood switch

Continuity

Connector

Terminal

Connector

Terminal

E9

104

E30

2

Existed

IPDM E/R

Ground

Continuity

Connector

Terminal

E9

104

Ground

Not existed

SEC-130

< COMPONENT DIAGNOSIS >

[INTELLIGENT KEY SYSTEM]

HOOD SWITCH

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Replace IPDM E/R. Refer to

PCS-34, "Removal and Installation"

.

4.

CHECK HOOD SWITCH

Refer to

SEC-130, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Replace hood switch.

5.

CHECK INTERMITTENT INCIDENT

Refer to

GI-38, "Intermittent Incident"

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>> INSPECTION END

Component Inspection

INFOID:0000000001700060

1.

CHECK HOOD SWITCH

1.

Turn ignition switch OFF.

2.

Disconnect hood switch connector.

3.

Check continuity between hood switch terminals.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace hood switch.

IPDM E/R

Ground

Voltage (V)

(Approx.)

Connector

Terminal

E9

104

Ground

Battery voltage

Hood switch

Condition

Continuity

Terminal

1

2

Hood switch

Press

Not existed

Release

Existed

HORN

SEC-131

< COMPONENT DIAGNOSIS >

[INTELLIGENT KEY SYSTEM]

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HORN

Description

INFOID:0000000001700061

Horn (high/low) is located inside of front bumper and operates when vehicle security system is in alarm phase.

Component Function Check

INFOID:0000000001700062

1.

CHECK FUNCTION

1.

Select “HORN” in “ACTIVE TEST” mode with CONSULT-III.

2.

Check the horn (high/low) operation.

Is the operation normal?

YES

>> INSPECTION END.

NO

>> Go to

SEC-131, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000001700063

1.

CHECK HORN FUNCTION

Check horn function with horn switch

Do the horns sound?

YES

>> GO TO 2.

NO

>> Go to

HRN-2, "Wiring Diagram - HORN -"

.

2.

CHECK HORN RELAY POWER SUPPLY

1.

Turn ignition switch ON.

2.

Perform “ACTIVE TEST” (“HORN”) with CONSULT-Ill.

3.

Check voltage between horn relay 1 and 2 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.

2.

Disconnect IPDM E/R connector E6 and horn relay 1 and 2 connector.

3.

Check continuity between IPDM E/R harness connector and horn relay 1 and 2 harness connector.

4.

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

Test item

Description

HORN

ON

Horn relay 1 and 2

ON (for 20 ms)

Horn relay1/2

Ground

Condition

Voltage (V)

(Approx.)

Connector

Terminal

E11

1

Ground

HORN

Activated

0

Deactivated

Battery voltage

E18

3

Activated

0

Deactivated

Battery voltage

IPDM E/R

Horn relay 1 and 2

Continuity

Connector

Terminal

Connector

Terminal

E6

44

E11

1

Existed

45

E18

3

IPDM E/R

Ground

Continuity

Connector

Terminal

SEC-132

< COMPONENT DIAGNOSIS >

[INTELLIGENT KEY SYSTEM]

HORN

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair or replace harness.

4.

CHECK INTERMITTENT INCIDENT

Refer to

GI-38, "Intermittent Incident"

.

>> INSPECTION END

E6

44

Ground

Not existed

45