Infiniti FX35, FX50 (S51). Manual - part 1209

INL-36

< DTC/CIRCUIT DIAGNOSIS >

HOSPITALITY LIGHTING POWER SUPPLY CIRCUIT 3

HOSPITALITY LIGHTING POWER SUPPLY CIRCUIT 3

Description

INFOID:0000000005245569

Total illumination control unit provides the following illuminations power supply according to the battery saver
signal from BCM.

Illuminations

• Trip computer switch
• Illumination control switch
• Multifunction switch
• Climate controlled seat switch
• LDW switch
• Snow mode switch
• Door mirror remote control switch
• AFS OFF switch
• Headlamp aiming switch
• Mode select switch
• Clock
• Steering switch
• IBA OFF switch
• DCA switch
• VDC OFF switch

Diagnosis Procedure

INFOID:0000000005245570

CAUTION:

Check the following circuit first if the other room lamps (Map lamp, personal lamps, foot lamps, puddle
lamps, etc.) are not turned ON.
• Power supply and ground circuit of total illumination control unit: Refer to 

INL-26, "TOTAL ILLUMI-

NATION CONTROL UNIT : Diagnosis Procedure"

.

• Battery saver signal circuit: Refer to 

INL-30, "Description"

.

1.

CHECK HOSPITALITY LIGHTING POWER SUPPLY 3 OUTPUT

CONSULT-III ACTIVE TEST

1.

Turn ignition switch ON.

2.

Set the illumination control switch in maximum.

3.

Select “BATTERY SAVER” of BCM (BATTERY SAVER) active test item.

4.

While operating the test item, check voltage between total illumination control unit harness connector and
ground.

Is the measurement value normal?

YES

>> GO TO 2.

NO

>> GO TO 3.

2.

CHECK HOSPITALITY LIGHTING POWER SUPPLY 3 CIRCUIT FOR OPEN 

1.

Turn ignition switch OFF.

2.

Disconnect the total illumination control unit connector and each illumination connectors.

3.

Check continuity between total illumination control unit harness connector and each illumination harness
connectors.

Terminals

Test item

Voltage

(Approx.)

(+)

(

−

)

Total illumination control unit

Ground

BATTERY 

SAVER

Connector

Terminal

M129

33

Off

0 V

On

12 V

HOSPITALITY LIGHTING POWER SUPPLY CIRCUIT 3

INL-37

< DTC/CIRCUIT DIAGNOSIS >

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Does continuity exist?

YES

>> Hospitality lighting power supply 3 circuit is normal.

NO

>> Repair the harnesses or connectors.

3.

CHECK HOSPITALITY LIGHTING POWER SUPPLY 3 CIRCUIT FOR SHORT

Check continuity between total illumination control unit harness connector and ground.

Does continuity exist?

YES

>> Repair the harnesses or connectors.

NO

>> Replace the total illumination control unit.

Total illumination con-

trol unit

Illuminations

Continuity

Connector

Terminal

Connector

Terminal

M129

33

Meter control 
switch

M54

4

Existed

Multifunction 
switch

M72

4

Climate controlled 
seat switch
(driver side)

M177

7

Climate controlled 
seat switch
(passenger side)

M178

7

LDW switch

M29

5

Snow mode 
switch

M176

5

Door mirror 
remote control 
switch

M20

16

AFS OFF switch

M21

5

Headlamp aiming 
switch

M15

3

Mode select 
switch

M179

4

Clock

M74

2

Combination 
switch

M36

23

IBA OFF switch

M184

5

DCA switch

M18

3

VDC OFF switch

M19

3

Total illumination control unit

Ground

Continuity

Connector

Terminal

M129

33

Not existed

INL-38

< DTC/CIRCUIT DIAGNOSIS >

MAP LAMP CIRCUIT

MAP LAMP CIRCUIT

Description

INFOID:0000000005245571

Controls the lamp (ground side) by PWM signal (duty) when the map
lamp main switch is DOOR.

Component Function Check

INFOID:0000000005245572

CAUTION:

 Check the following item first.
• Hospitality lighting power supply 1 circuit (When both side lamps are not turned ON.)
• Map lamp bulbs

1.

CHECK MAP LAMP CONTROL FUNCTION

CONSULT-III ACTIVE TEST

1.

Turn ignition switch ON.

2.

Select “MAP LAMP-DR” or “MAP LAMP-AS” of TOTAL ILLUM C/U active test item.

3.

While operating the test items, check map lamps operation.

Are the map lamps turned ON/OFF?

YES

>> Map lamp circuit is normal.

NO

>> Refer to 

INL-38, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000005245573

1.

CHECK MAP LAMP CONTROL OUTPUT

CONSULT-III ACTIVE TEST

1.

Turn ignition switch ON.

2.

Switch map lamp main switch DOOR.

3.

Select “MAP LAMP-DR” or “MAP LAMP-AS” of TOTAL ILLUM C/U active test item.

4.

While operating the test items, check voltage between total illumination control unit harness connector
and ground.

Driver side

JPLIA1210GB

Test item

Operation

MAP LAMP-DR

On

Map lamp
(driver side)

ON

Off

OFF

MAP LAMP-AS

On

Map lamp
(passenger side)

ON

Off

OFF

Total illumination control 

unit

Ground

Test item

Voltage

(Approx.)

Connector

Terminal

MAP LAMP-

DR

M129

18

On

0 V

Off

12 V

MAP LAMP CIRCUIT

INL-39

< DTC/CIRCUIT DIAGNOSIS >

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Passenger side

Is the measurement value normal?

Fixed at 12 V>>Replace the total illumination control unit.
Fixed at 0 V>>GO TO 2.

2.

CHECK THE SYMPTOM

Check that the lamp fixed to ON or OFF.

Fixed OFF>>GO TO 3.
Fixed ON>>GO TO 4.

3.

CHECK MAP LAMP CONTROL CIRCUIT FOR OPEN

1.

Turn ignition switch OFF.

2.

Disconnect the total illumination control unit and map lamp connector.

3.

Check continuity between the total illumination control unit harness connector and map lamp harness con-
nector.

Does continuity exist?

YES

>> Replace the map lamp assembly.

NO

>> Repair the harnesses or connectors.

4.

CHECK MAP LAMP CONTROL CIRCUIT FOR SHORT

1.

Turn ignition switch OFF.

2.

Disconnect the total illumination control unit and map lamp connector.

3.

Check continuity between the total illumination control unit harness connector and ground.

Does continuity exist?

YES

>> Repair the harnesses or connectors.

NO

>> Replace the total illumination control unit.

Total illumination control 

unit

Ground

Test item

Voltage

(Approx.)

Connector

Terminal

MAP LAMP-

AS

M129

12

On

0 V

Off

12 V

Total illumination control unit

Map lamp

Continuity

Connector

Terminal

Connec-

tor

Terminal

Driver 
side

M129

18

R15

7

Existed

Passen-
ger side

12

9

Total illumination control unit

Ground

Continuity

Connector

Terminal

Driver 
side

M129

18

Not existed

Passen-
ger side

12