Infiniti EX35. Manual - part 1221

POWER SUPPLY AND GROUND CIRCUIT

RF-9

< COMPONENT DIAGNOSIS >

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COMPONENT DIAGNOSIS

POWER SUPPLY AND GROUND CIRCUIT

BCM (BODY CONTROL MODULE)

BCM (BODY CONTROL MODULE) : Diagnosis Procedure

INFOID:0000000003703350

1.

CHECK FUSE AND FUSIBLE LINK

1.Turn ignition switch OFF.
2.Check that the following fuse and fusible link are not blown.

Is the fuse fusing?

YES

>> Replace the blown fuse or fusible link after repairing the affected circuit if a fuse or fusible link is

blown.

NO

>>  GO TO 2.

2.

CHECK POWER SUPPLY CIRCUIT

1.

Disconnect BCM connectors.

2.

Check voltage between BCM harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace harness or connector.

3.

CHECK GROUND CIRCUIT

Check continuity between BCM harness connector and ground.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Repair or replace harness or connector.

SUNROOF MOTOR ASSEMBLY

SUNROOF MOTOR ASSEMBLY : Description

INFOID:0000000003601788

• BCM supplies power.
• It is sunroof motor and CPU integrated type.
• Tilt up/down & slide open/close by sunroof switch operation.

SUNROOF MOTOR ASSEMBLY : Diagnosis Procedure

INFOID:0000000003601789

SUNROOF MOTOR ASSEMBLY

1.

CHECK POWER SUPPLY CIRCUIT

Terminal No.

Signal name

Fuse and fusible link No.

1

Battery power supply

K (40A)

11

10 (10A)

(+)

(

−

)

Voltage

(Approx.)

BCM

Connector

Terminal

M118

1

Ground

Battery voltage

M119

11

BCM

Ground

Continuity

Connector

Terminal

M119

13

Existed

RF-10

< COMPONENT DIAGNOSIS >

POWER SUPPLY AND GROUND CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect sunroof motor assembly connector.

3.

Turn ignition switch ON.

4.

Check voltage between sunroof motor assembly harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> GO TO 3.

2.

CHECK GROUND CIRCUIT

1.

Turn ignition switch OFF.

2.

Check continuity between sunroof motor assembly harness connector and ground.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Repair or replace harness or connector.

3.

CHECK SUNROOF MOTOR CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect BCM connector.

3.

Check continuity between BCM harness connector and sunroof motor assembly harness connector.

4.

Check continuity between BCM harness connector and ground.

Is the inspection result normal?

YES

>> Replace BCM.Refer to 

BCS-84, "Removal and Installation"

.

NO

>> Repair or replace harness or connector.

(+)

(–)

Voltage (V)

(Approx.)

Sunroof motor assembly 

 Connector

Terminal 

R4

9

Ground

Battery voltage

7

Sunroof motor assembly

Ground

Continuity 

 Connector

Terminal

R4

10

Exists

BCM

Sunroof motor assembly

Continuity

Connector

Terminal

 Connector

Terminal

M118

2

R4

7

Exists

3

9

BCM

Ground

Continuity

 Connector

Terminal

M118

2

Not exist

3

SUNROOF SWITCH

RF-11

< COMPONENT DIAGNOSIS >

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SUNROOF SWITCH

Description

INFOID:0000000003601790

Tilt up/down & slide open/close by sunroof switch operation.

Component Function Check

INFOID:0000000003601791

1.

CHECK SUNROOF MOTOR OPERATION

Check tilt up/down & slide open/close operations with sunroof switch.

Is the inspection result normal?

YES

>> Sunroof switch is OK.

NO

>> Refer to 

RF-11, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000003601792

SUNROOF SWITCH

1.

CHECK SUNROOF SWITCH POWER SUPPLY CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect sunroof switch connector.

3.

Turn ignition switch ON.

4.

Check voltage between sunroof switch harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> GO TO 4.

2.

CHECK GROUND CIRCUIT

1.

Turn ignition switch OFF.

2.

Check continuity between sunroof switch harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace harness or connector.

3.

CHECK SUNROOF SWITCH

Check sunroof switch.
Refer to 

RF-12, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Replace sunroof switch (built in map lamp assembly). Refer to 

RF-83, "Removal and Installation"

.

4.

CHECK SUNROOF SWITCH CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect sunroof motor assembly connector.

3.

Check continuity between sunroof switch assembly harness connector and sunroof switch harness con-
nector.

(+)

(–)

Voltage (V)

(Approx.)

Sunroof switch

Connector

Terminal

R16

1

Ground

Battery voltage

3

Sunroof switch

Ground

Continuity

Connector

Terminal

R16

2

Exist

RF-12

< COMPONENT DIAGNOSIS >

SUNROOF SWITCH

4.

Check continuity between sunroof switch assembly harness connector and ground.

Is the inspection result normal?

YES

>> Replace sunroof motor assembly.

RF-75, "Removal and Installation"

NO

>> Repair or replace harness or connector.

5.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-38, "Intermittent Incident"

.

>> INSPECTION END

Component Inspection

INFOID:0000000003601793

SUNROOF SWITCH

1.

CHECK SUNROOF SWITCH

1.

Turn ignition switch OFF.

2.

Disconnect sunroof switch connector.

3.

Check continuity sunroof switch terminals.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace sunroof switch (built in map lamp assembly). Refer to 

RF-83, "Removal and Installation"

.

Sunroof switch

Sunroof motor assembly

Continuity

Connector

Terminal

Connector

Terminal

R16

1

R4

5

Exist

3

1

Sunroof motor assembly

Ground

Continuity

Connector

Terminal

R4

5

Not exist

1

Terminals

Condition

Continuity

1 

2

Sunroof switch is operated 

TILT DOWN or SLIDE OPEN

Exists

Other than above

Not exist

3 

Sunroof switch is operated

TILT UP or SLIDE CLOSE

Exists

Other than above

Not exist