Infiniti F50. Manual - part 664

STEP LAMP

LT-123

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6.

Select the desired part to be diagnosed on the “SELECT TEST ITEM” screen.

DATA MONITOR
Operation Procedure

1.

Touch “STEP LAMP” on the “SELECT TEST ITEM” screen.

2.

Touch “DATA MONITOR” on the “SELECT DIAG MODE” screen.

3.

Touch “ALL SIGNALS” or “SELECTION FROM MENU” on the “DATA MONITOR” screen.

4.

Touch “START”.

5.

When selected “SELECTION FROM MENU”, touch items to be monitored. When “ALL SIGNALS” is
selected all items will be monitored.

6.

Touch “RECORD” while monitoring and status of the item being monitored can be recorded. To stop
recording, touch “STOP”.

Data Monitor Item 

ACTIVE TEST
Operation Procedure

1.

Touch “STEP LAMP” on the “SELECT TEST ITEM” screen.

2.

Touch “ACTIVE TEST” on the “SELECT DIAG MODE” screen.

3.

Touch item to be tested and check operation of the selected item.

4.

Touch “STOP” while testing and the operation will be stopped.

Active Test Item 

MAIN SIGNALS

Monitors the main items.

SELECTION FROM MENU

Selects and monitors the items.

Monitored item 

[“OPERATION OR UNIT”]

Description

DOOR SW-DR

[ON/OFF]

Displays status of the driver door as judged from the driver door switch signal. (Door is open: ON/
Door is closed: OFF)

DOOR SW-AS

[ON/OFF]

Displays “Door open (ON)/door closed (OFF)” status judged from the passenger door switch signal.

DOOR SW-RR

[ON/OFF]

Displays “Door open (ON)/door closed (OFF)” status judged from the Rear RH door switch signal.

DOOR SW-RL

[ON/OFF]

Displays “Door open (ON)/door closed (OFF)” status judged from the Rear LH door switch signal.

Test items

Display on CONSULT-II 

screen

Description

Driver door step lamp output

STEP LAMP-DR

Driver door step lamp can be operated by any ON-OFF operation of 
lights.

Passenger door step lamp output

STEP LAMP-AS

Passenger door step lamp can be operated by any ON-OFF operation 
of lights.

Rear RH door step lamp output

STEP LAMP-RR/RH

Rear RH door step lamp can be operated by any ON-OFF operation of 
lights.

Rear LH door step lamp output

STEP LAMP-RR/LH

Rear LH door step lamp can be operated by any ON-OFF operation of 
lights.

LT-124

STEP LAMP

On Board Diagnosis

EKS00180

ON BOARD DIAGNOSTIC RESULTS INDICATOR LAMP.

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Map lamps and step lamps (all seats) act an the indicators for the on board diagnosis.

DIAGNOSIS ITEM

SWITCH MONITOR

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Perform the diagnosis on the switch system to each control unit.

How to Perform Switch Monitor

Description

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In this mode, when BCM detects the input signal from a switch in IVMS as shown below, the detection is
indicated by the map lamp and front step lamps with buzzer.

Switch Monitor Item

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The status of the switch (except the ignition switch, interior lamp ill switch, and map lamp switch) as input
to each control unit can be monitored.

Cancel of Switch Monitor

If the following conditions are satisfied, the communication diagnosis is cancelled.

●

Turn ignition switch OFF.

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Drive the vehicle more than 7 km/h (4 MPH).

Diagnosis item

Description

Switch monitor

Checks for malfunction in switch systems that input to BCM and each LCU.

SIIA0411E

PIIA0177E

Control unit

Item

BCM

Each door switch

STEP LAMP

LT-125

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Symptom Chart 

EKS00181

DIAGNOSTIC PROCEDURE

SYMPTOM: Step lamp does not illuminate/dose not go off when door is opened/closed.

1. 

CHECK DOOR SWITCH SIGNAL

With CONSULT-II

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Operate each door via “DOOR SW” on DATA MONITOR screen
and check that the switch turns on and off as commanded.

Without CONSULT-II

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Operate each door and via “switch monitor” of the self-diagnosis function and check that the switch turns
on and off as commanded.

OK or NG

OK

>> GO TO 5.

NG

>> GO TO 2.

2. 

CHECK FRONT DOOR SWITCH HARNESS CONTINUITY

1.

Disconnect connectors of the BCM and front door switch.

2.

Check continuity between BCM harness connector M4, B4 ter-
minals 37 (W/G), 142 (W/R) and the door switches harness con-
nectors B20, B220 terminal 1 (W/R, W/G).

3.

Check continuity between BCM harness connector M4, B4 ter-
minals 37 (W/G), 142 (W/R) and body ground.

OK or NG

OK

>> GO TO 3.

NG

>> Repair or replace harness.

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Terminals

Continuity

(+)

(–)

Connector

Terminal 

(Wire 

color)

Connector

Terminal 

(Wire 

color)

B4

142 (W/R)

B20

1(W/R)

Yes

M4

37 (W/G)

B220

1(W/G)

B4

142 (W/R)

Body ground

No

M4

37 (W/G)

SKIA0442E

LT-126

STEP LAMP

3. 

CHECK REAR DOOR SWITCH HARNESS CONTINUITY

1.

Disconnect connectors of rear door switch.

2.

Check continuity between BCM harness connector M4, B4 ter-
minals 33 (W), 143 (W/L) and the door switches harness con-
nectors D62, D82 terminal 1 (W).

3.

Check continuity between BCM harness connector M4, B4 ter-
minals 33 (W), 143 (W/L) and body ground.

OK or NG

OK

>> GO TO 4.

NG

>> Repair or replace harness.

4. 

CHECK DOOR SWITCH

Check continuity between front door switch connector B20, B220 ter-
minal 1 (W/R, W/G) and body ground, and between the rear door
switch connector D62, D82 terminals 1 (W) and 2 (B) while turning
the door switches ON (open) and OFF (closed).    

OK or NG

OK

>> Check door switch ground circuit or door switch ground

condition.

NG

>> Replace door switch.

5. 

CHECK BULB

Check step lamp bulb.
OK or NG

OK

>> GO TO 6.

NG

>> Replace bulb.

Terminals

Continuity

(+)

(–)

Connector

Terminal 

(Wire 

color)

Connector

Terminal 

(Wire 

color)

M4

33 (W)

D62

1(W)

Yes

B4

143 (W/L)

D82

1(W)

Yes

M4

33 (W)

Body ground

No

B4

143 (W/L)

SKIA0443E

Terminals

Condition

Continuity

Connector

(+)

(–)

Terminal 

(Wire 

color)

Terminal 

(Wire 

color)

B20

1 (W/R)

Body 

ground

ON (Open)

Yes

B220

1 (W/G)

OFF (Closed)

No

D62

1 (W)

2 (B)

ON (Open)

Yes

D82

OFF (Closed)

No

SKIA0444E