Infiniti F50. Manual - part 208

REMOTE KEYLESS ENTRY SYSTEM

BL-79

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COMMUNICATION SYSTEM A

1. 

BCM INSPECTION

Replace the malfunctioning BCM with a known-good one, and perform the communication diagnosis.
Refer to 

BL-73, "IVMS COMMUNICATION INSPECTION"

  (with CONSULT-II), 

BL-77, "COMMUNICATION

DIAGNOSIS"

  (without CONSULT-II).

OK or NG

OK

>> Replace BCM.

NG

>> GO TO 2.

2. 

LCU INSPECTION

1.

Replace with the previously installed BCM.

2.

Replace the LCU with a known-good one, and perform the communication diagnosis.
Refer to 

BL-73, "IVMS COMMUNICATION INSPECTION"

  (with CONSULT-II), 

BL-77, "COMMUNICA-

TION DIAGNOSIS"

  (without CONSULT-II).

OK or NG

OK

>> Replace LCU.

NG

>> Repair or replace harness.

COMMUNICATION SYSTEM B

1. 

CONNECTOR INSPECTION

Check the terminals (at the control unit and harness) on the malfunctioning LCU for disconnection, bend, and
other malfunctions.

OK or NG

OK

>> GO TO 2.

NG

>> Repair terminals and connectors.

2. 

LCU INSPECTION

Replace the LCU with a known-good one, and perform the communication diagnosis.
Refer to 

BL-73, "IVMS COMMUNICATION INSPECTION"

  (with CONSULT-II), 

BL-77, "COMMUNICATION

DIAGNOSIS"

  (without CONSULT-II).

OK or NG

OK

>> Replace LCU.

NG

>> Repair communication harness between the indicated LCU and BCM.

COMMUNICATION SYSTEM C

1. 

CONNECTOR INSPECTION

Check the terminals (at the control unit and harness) on BCM and LCU for disconnection, bend and other mal-
functions.

OK or NG

OK

>> GO TO 2.

NG

>> Repair terminals and connectors.

2. 

BCM INSPECTION

Replace the BCM with a known-good one, and perform the communication diagnosis.
Refer to 

BL-73, "IVMS COMMUNICATION INSPECTION"

  (with CONSULT-II), 

BL-77, "COMMUNICATION

DIAGNOSIS"

  (without CONSULT-II).

OK or NG

OK

>> Replace BCM

NG

>> Repair communication harness between LCU and BCM.

BL-80

REMOTE KEYLESS ENTRY SYSTEM

SWITCH MONITOR
How To Perform Switch Monitor

Description

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

Switch Monitor Item

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

Cancel of Switch Monitor.

If one of the following conditions is satisfied, the switch monitor is cancelled.

●

Turn ignition switch OFF.

●

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

Trouble Diagnosis Chart by Symptom

EIS003QP

●

Always check the “Work Flow” before troubleshooting. Refer to 

BL-69, "Work Flow"

 .

PIIA3356E

PIIA0177E

Control unit

Item

BCM

All door switch

Electronic key (lock / unlock switch and trunk switch)

Driver door control unit (LCU01)

Door lock & unlock switch (LOCK / UNLOCK)

Driver door unlock sensor

Passenger door control unit.

Passenger door unlock sensor

RH rear door control unit.

Rear RH door unlock sensor

LH rear door control unit.

Rear LH door unlock sensor

REMOTE KEYLESS ENTRY SYSTEM

BL-81

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●

Before carrying out the inspection on the following table, perform the preliminary check. 
Refer to 

BL-70, "Preliminary Check"

 .

Symptom

malfunctioning system and reference

Reference 

page

All functions of remote keyless entry system does not 
operate.

1. Check electronic key battery. 

BL-98

2. Check electronic key.

BL-82

3. Check remote keyless entry receiver.

BL-94

4. Replace electronic key.

NOTE:
If the result of electronic key check with CONSULT-II is OK, 
electronic key is not malfunctioning. Refer to 

BL-82

 .

BL-99

5. Replace BCM.

–

The new ID of electronic key cannot be entered without 
CONSULT-II.

1. Check electronic key battery. 

BL-98

2. Check electronic key.

BL-82

3. Check key switch.

BL-84

4. Check door switch. 

BL-85

5. Check ACC power.

BL-83

6. Check door lock and unlock switch.

BL-96

7. Replace electronic key.

NOTE:
If the result of electronic key check with CONSULT-II is OK, 
electronic key is not malfunctioning. Refer to 

BL-82

 .

BL-99

8. Replace BCM.

–

Door lock or unlock does not function with electronic key.
(Power door lock system is “OK”.)

1. Check electronic key.

BL-82

2. Check door switch. 

BL-85

3. Replace electronic key.

NOTE:
If the result of electronic key check with CONSULT-II is OK, 
electronic key is not malfunctioning. Refer to 

BL-82

 .

BL-99

4. Replace BCM.

–

Trunk lid does not open when trunk opener button is con-
tinuously pressed with electronic key.

1. First check trunk cancel switch position is “ON”.

–

2. Check electronic key.

BL-82

3. Check trunk lid opener cancel switch.

BL-88

4. Check trunk open signal.

BL-90

5. Check trunk lid opener actuator.

BL-89

6. Check key switch.

BL-84

7. Replace electronic key.

NOTE:
If the result of electronic key check with CONSULT-II is OK, 
electronic key is not malfunctioning. Refer to 

BL-82

 .

BL-99

8. Replace BCM.

–

Hazard reminder does not activate properly when press-
ing lock or unlock button of electronic key.
(Horn reminder is OK.)

1. Check hazard reminder mode*
*: Hazard reminder can be changed. 
First check the hazard reminder setting.

BL-76

2. Check hazard function with hazard switch.

BL-96

3. Check hazard reminder operation. 

BL-93

4. Replace BCM.

–

BL-82

REMOTE KEYLESS ENTRY SYSTEM

Check Electronic Key

EIS003OH

1. 

CHECK ELECTRONIC KEY

With CONSULT-II

Check Electronic key “LOCK / UNLOCK BUTTON”, “TRUNK BTN-CON” and “PANIC BTN” in “DATA MONI-
TOR” mode with CONSULT-ll.

Without CONSULT-II

Check electronic key in “SWITCH MONITOR” mode.Refer to 

BL-80, "SWITCH MONITOR"

 .

OK or NG

OK

>> Electronic key is OK.

NG

>> GO TO 2.

2. 

CHECK ELECTRONIC KEY ID

With CONSULT-II

Check electronic key “ID Code” in “WORK SUPPORT” mode with CONSULT-II.
Refer to 

BL-100, "PROCEDURE 2 (With CONSULT-II)"

 .

Without CONSULT-II

Check electronic key “ID Code” in “REMOTE CONTROLLER ID SET UP” mode.
Refer to 

BL-99, "PROCEDURE 1 (WITHOUT CONSULT-II)"

 . 

OK or NG?

OK

>> Electronic key was not registered.

NG

>>

●

Check remote keyless entry receiver.
Refer to 

BL-94, "Check Remote Keyless Entry Receiver"

 .

●

Check electronic key battery.
Refer to 

BL-98, "CHECK ELECTRONIC KEY BATTERY"

 .

Horn reminder does not activate properly when pressing 
lock button of electronic key.
(Hazard reminder is OK.)

1. Check horn reminder mode*
*: Horn reminder can be changed. 
First check the horn chirp setting.

BL-76

2. Check horn function with horn switch.

BL-96

3. Replace BCM.

–

Panic alarm (horn and headlamp) does not activate 
when panic alarm button is continuously pressed.
(All other system function is OK.)

1. Check electronic key.

BL-82

2. Check horn function with horn switch.

BL-96

3. Check headlamp function.

BL-96

4. Check key switch.

BL-84

5. Replace electronic key.

NOTE:
If the result of electronic key check with CONSULT-II is OK, 
electronic key is not malfunctioning. Refer to 

BL-82

 .

BL-99

6. Replace BCM.

–

Keyless power window down (open) operation does not 
activate properly.
(All other remote keyless entry system function is OK.)

1. Check power window down operation mode*
*: Power window down operation can be activated or deacti-
vated. First check the power window down setting.

BL-76

2. Check power window function

GW-16

3. Replace BCM.

–

Auto door lock operation does not activate properly.
(All other system function is OK.)

1. Replace BCM.

–

Map lamp operation do not activate properly.

1. Check map lamp function.

BL-97

2. Check door switch.

BL-85

3. Replace BCM.

–

Symptom

malfunctioning system and reference

Reference 

page