Infiniti QX56 (Z62). Manual - part 953

MWI-66

< DTC/CIRCUIT DIAGNOSIS >

TRIP RESET AND ILLUMINATION CONTROL SWITCH SIGNAL CIRCUIT

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Repair harness or connector.

Component Inspection

INFOID:0000000006221745

1.

CHECK TRIP RESET AND ILLUMINATION CONTROL SWITCH

1.

Turn ignition switch OFF.

2.

Disconnect trip reset and illumination control switch connector. 

3.

Check trip reset and illumination control switch.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace trip reset and illumination control switch. Refer to 

MWI-86, "Removal and Installation"

.

Terminals

Condition

Continuity

Trip reset and illumina-

tion control switch

5

6

When trip reset switch is pressed

Existed

Other than the above

Not existed

3

When illumination control switch (+) is pressed

Existed

Other than the above

Not existed

4

When illumination control switch (

−

) is pressed

Existed

Other than the above

Not existed

MWI

TRIP COMPUTER SWITCH SIGNAL CIRCUIT

MWI-67

< DTC/CIRCUIT DIAGNOSIS >

C

D

E

F

G

H

I

J

K

L

M

B

A

O

P

TRIP COMPUTER SWITCH SIGNAL CIRCUIT

Diagnosis Procedure

INFOID:0000000006221746

1.

CHECK COMBINATION METER INPUT SIGNAL

1.

Turn ignition switch ON.

2.

Measure voltage between the following terminals of the combination meter.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> GO TO 2.

2.

CHECK TRIP COMPUTER SWITCH SIGNAL CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect combination meter connector and trip computer switch connector.

3.

Check continuity between combination meter harness connector and trip computer switch harness con-
nector.

4.

Check continuity between combination meter harness connector and ground.

Is the inspection result normal? 

YES

>> GO TO 3.

NO

>> Repair harness or connector.

3.

CHECK TRIP COMPUTER SWITCH GROUND CIRCUIT

Check continuity between trip computer switch connector and ground.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Repair harness or connector.

(+)

(

−

)

Condition

Voltage

(Approx.)

Combination meter

Ground

Connector

Terminals

M34

11

When enter switch is pressed

0 V

Other than the above

5 V

12

When select switch is pressed

0 V

Other than the above

5 V

Terminals

Continuity

Combination meter

Trip computer switch

Connector

Terminal

Connector

Terminal

M34

11

M84

3

Existed

12

4

Combination meter

Ground

Continuity

Connector

Terminal

M34

11

Not existed

12

Trip computer switch

Ground

Continuity

Connector

Terminal

M84

6

Existed

MWI-68

< DTC/CIRCUIT DIAGNOSIS >

TRIP COMPUTER SWITCH SIGNAL CIRCUIT

Component Inspection

INFOID:0000000006221747

1.

CHECK TRIP COMPUTER SWITCH

1.

Turn ignition switch OFF.

2.

Disconnect trip computer switch connector. 

3.

Check trip computer switch.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace trip computer switch. Refer to 

MWI-87, "Removal and Installation"

.

Terminals

Condition

Continuity

Trip computer switch

3

6

When enter switch is pressed

Existed

Other than the above

Not existed

4

When select switch is pressed

Existed

Other than the above

Not existed

MWI

FUEL LEVEL SENSOR SIGNAL CIRCUIT

MWI-69

< DTC/CIRCUIT DIAGNOSIS >

C

D

E

F

G

H

I

J

K

L

M

B

A

O

P

FUEL LEVEL SENSOR SIGNAL CIRCUIT

Component Function Check

INFOID:0000000006221748

1.

CHECK COMBINATION METER OUTPUT SIGNAL

Select the “Data Monitor” for the “METER/M&A” and compare the “FUEL METER” monitor value with the fuel
gauge reading on the combination meter.

Does monitor value match fuel gauge reading?

YES

>> INSPECTION END

NO

>> Replace combination meter. Refer to 

MWI-85, "Removal and Installation"

.

Diagnosis Procedure

INFOID:0000000006221749

1.

CHECK COMBINATION METER INPUT SIGNAL

1.

Turn ignition switch ON.

2.

Check voltage between combination meter harness connector and ground.

Does it match fuel gauge reading?

YES

>> GO TO 2.

NO

>> Replace the combination meter. Refer to 

MWI-85, "Removal and Installation"

.

2.

CHECK FUEL LEVEL SENSOR CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect combination meter connector and fuel level sensor unit connector.

3.

Check continuity between combination meter harness connector and fuel level sensor unit harness con-
nector.

4.

Check continuity between combination meter harness connector and ground.

Fuel gauge indication position

Reference value of data monitor [L]

1

Approx. 101.8

3/4

Approx. 77.3

1/2

Approx. 52.3

1/4

Approx. 27.3

0

Approx.  2.3

Terminals

Voltage

(Approx.)

(+)

(

−

)

Combination meter

Ground

Connector

Terminal

M34

34

JSNIA3013ZZ

Combination meter

Fuel level sensor unit

Continuity

Connector

Terminal

Connector

Terminal

M34

34

C5

2

Existed