Infiniti QX56 (Z62). Manual - part 1059

POWER SUPPLY AND GROUND CIRCUIT

RF-19

< DTC/CIRCUIT DIAGNOSIS >

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2.

Check continuity between sunroof motor assembly harness connector and ground.

Is the inspection result normal?

YES

>> Check BCM power supply and ground circuit. Refer to 

BCS-75, "Diagnosis Procedure"

.

NO

>> Repair or replace harness or connector.

BCM

Sunroof motor assembly

Continuity

Connector

Terminal

 Connector

Terminal

M70

69

R4

6

Existed

Sunroof motor assembly

Ground

Continuity 

 Connector

Terminal

R4

6

Not existed

RF-20

< DTC/CIRCUIT DIAGNOSIS >

VEHICLE SPEED SIGNAL CIRCUIT

VEHICLE SPEED SIGNAL CIRCUIT

Component Function Check

INFOID:0000000006141233

1.

CHECK SUNROOF MOTOR FUNCTION

Check tilt up/down & slide open/close operations with sunroof switch.
Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Check sunroof switch. Refer to 

RF-21, "Diagnosis Procedure"

.

2.

CHECK SUNROOF MOTOR ASSEMBLY INPUT SIGNAL

1.

Start engine.

2.

Drive the vehicle at more than 40 km/h (25 MPH).

CAUTION:

Always drive vehicle at a safe speed.
NOTE:
This procedure may be conducted with the drive wheels lifted in the shop or by driving the vehicle.
If a road test is expected to be easier, it is unnecessary to lift the vehicle.

3.

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

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Refer to 

RF-20, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000006141234

SUNROOF MOTOR ASSEMBLY

1.

CHECK SUNROOF MOTOR ASSEMBLY INPUT SIGNAL

1.

Turn ignition switch OFF.

2.

Disconnect combination meter harness connector and sunroof motor assembly harness connector.

3.

Check continuity between combination meter harness connector and sunroof motor assembly harness
connector.

4.

Check continuity between sunroof motor assembly harness connector and ground.

Is the inspection result normal?

YES

>> Check combination meter. Refer to 

MWI-61, "Diagnosis Procedure"

.

NO

>> Repair or replace harness or connector.

Combination meter

Sunroof motor assembly

Continuity

Connector

Terminal

 Connector

Terminal

M34

30

R4

8

Exists

Sunroof motor assembly

Ground

Continuity 

 Connector

Terminal

R4

8

Not existed

SUNROOF SWITCH

RF-21

< DTC/CIRCUIT DIAGNOSIS >

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SUNROOF SWITCH

Component Function Check

INFOID:0000000006141235

1.

CHECK SUNROOF MOTOR FUNCTION

Check tilt up/down & slide open/close operations with sunroof switch.
Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Refer to 

RF-21, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000006141236

1.

PERFORM INITIALIZATION PROCEDURE

1.

Initialization procedure is executed and operation is confirmed. Refer to 

RF-17, "ADDITIONAL SERVICE

WHEN REPLACING CONTROL UNIT : Special Repair Requirement"

.

2.

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

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> GO TO 2.

2.

CHECK SUNROOF SWITCH GROUND CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect sunroof switch harness connector.

3.

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 INPUT SIGNAL 

1.

Turn ignition switch ON.

2.

Check voltage between sunroof switch harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> GO TO 4.

4.

CHECK SUNROOF SWITCH CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect sunroof motor assembly harness connector.

3.

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

Sunroof switch

Ground

Continuity 

 Connector

Terminal

R16

2

Existed

(+)

(

−

)

Voltage (V)

(Approx.)

sunroof switch

Connector

Terminal

R16

1

Ground

12

3

RF-22

< DTC/CIRCUIT DIAGNOSIS >

SUNROOF SWITCH

4.

Check continuity between sunroof motor assembly harness connector and ground. 

Is the inspection result normal?

YES

>> Replace sunroof motor assembly. Refer to 

RF-36, "Removal and Installation"

.

NO

>> Repair or replace harness or connector.

5.

CHECK SUNROOF SWITCH

Check sunroof switch.
Refer to 

RF-22, "Component Inspection"

.

Is the inspection result normal?

YES

>> Check intermittent incident. Refer to 

GI-40, "Intermittent Incident"

.

NO

>> Replace sunroof switch. Refer to 

RF-41, "Removal and Installation"

.

Component Inspection

INFOID:0000000006141237

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. Refer to 

RF-41, "Removal and Installation"

.

Sunroof motor assembly

Sunroof switch

Continuity

Connector

Terminal

 Connector

Terminal

R4

5

R16

1

Existed

10

3

Sunroof motor assembly

Ground

Continuity

 Connector

Terminal

R4

5

Not existed

10

Terminals

Condition

Continuity

1 

2

Sunroof switch is operated 

TILT DOWN or SLIDE OPEN

Existed

Other than above

Not existed

3 

Sunroof switch is operated

TILT UP or SLIDE CLOSE

Existed

Other than above

Not existed