Infiniti FX35, FX50 (S51). Manual - part 1422

PCS-46

< SYSTEM DESCRIPTION >

[POWER DISTRIBUTION SYSTEM]

DIAGNOSIS SYSTEM (BCM)

Test item

Description

BATTERY SAVER

This test is able to check interior room lamp operation.
The interior room lamp will be activated when “ON” on CONSULT-III screen is touched.

PW REMOTO DOWN SET

This test is able to check power window down operation.
The power window down will be activated when “ON” on CONSULT-III screen is touched.

OUTSIDE BUZZER

This test is able to check Intelligent Key warning buzzer operation.
The Intelligent Key warning buzzer will be activated when “ON” on CONSULT-III screen is touched.

INSIDE BUZZER

This test is able to check warning chime in combination meter operation.
• Take away warning chime sounds when “TAKE OUT” on CONSULT-III screen is touched.
• Key warning chime sounds when “KEY” on CONSULT-III screen is touched.
• The P position warning chime sounds when “KNOB” on CONSULT-III screen is touched.

INDICATOR

This test is able to check warning lamp operation.
• “KEY” Warning lamp illuminates when “RED ON” on CONSULT-III screen is touched.
• The “KEY” Warning lamp blinks when “RED IND” on CONSULT-III screen is touched.

INT LAMP

This test is able to check interior room lamp operation.
The interior room lamp will be activated when “ON” on CONSULT-III screen is touched.

LCD

This test is able to check meter display information
• Engine start information displays when “BP N” on CONSULT-III screen is touched.
• Engine start information displays when “BP I” on CONSULT-III screen is touched.
• Key ID warning displays when “ID NG” on CONSULT-III screen is touched.
• Steering lock information displays when “ROTAT” on CONSULT-III screen is touched.
• The P position warning displays when “SFT P” on CONSULT-III screen is touched.
• Intelligent Key insert information displays when “INSRT” on CONSULT-III screen is touched.
• Intelligent Key low battery warning displays when “BATT” on CONSULT-III screen is touched.
• Take away warning displays when “NO KY” on CONSULT-III screen is touched.
• Key warning displays when “OUTKY” on CONSULT-III screen is touched.
• The OFF position warning displays when “LK WN” on CONSULT-III screen is touched.

TRUNK/GLASS HATCH

This test is able to check back door opener actuator open operation.
This actuator opens when “ON” on CONSULT-III screen is touched.

FLASHER

This test is able to check security hazard lamp operation.
The hazard lamps will be activated when “LH” or “RH” on CONSULT-III screen is touched.

HORN

This test is able to check horn operation.
The horn will be activated when “ON” on CONSULT-III screen is touched.

P RANGE

This test is able to check A/T shift selector power supply
A/T shift selector power is supplied when “ON” on CONSULT-III screen is touched.

ENGINE SW ILLUMI

This test is able to check push-ignition switch illumination operation.
Push-ignition switch illumination illuminates when “ON” on CONSULT-III screen is touched.

LOCK INDICATOR

This test is able to check indicator in push-ignition switch operation.
Indicator in push-ignition switch (LOCK) illuminates when “ON” on CONSULT-III screen is touched.

ACC INDICATOR

This test is able to check indicator in push-ignition switch operation.
Indicator in push-ignition switch (ACC) illuminates when “ON” on CONSULT-III screen is touched.

IGNITION ON IND

This test is able to check indicator in push-ignition switch operation.
Indicator in push-ignition switch (ON) illuminates when “ON” on CONSULT-III screen is touched.

KEY SLOT ILLUMI

This test is able to check key slot illumination operation.
Key slot illumination blinks when “ON” on CONSULT-III screen is touched.

TRUNK/BACK DOOR

This test is able to check back door opener actuator open operation.
This actuator opens when “ON” on CONSULT-III screen is touched.

PCS

U1000 CAN COMM CIRCUIT

PCS-47

< DTC/CIRCUIT DIAGNOSIS >

[POWER DISTRIBUTION SYSTEM]

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DTC/CIRCUIT DIAGNOSIS

U1000 CAN COMM CIRCUIT

BCM

BCM : Description

INFOID:0000000005240664

CAN (Controller Area Network) is a serial communication line for real time applications. It is an on-vehicle mul-
tiplex communication line with high data communication speed and excellent error detection ability. Modern
vehicle is equipped with many electronic control unit, and each control unit shares information and links with
other control units during operation (not independent). In CAN communication, control units are connected
with 2 communication lines (CAN H-line, CAN L-line) allowing a high rate of information transmission with less
wiring. Each control unit transmits/receives data but selectively reads required data only.
CAN Communication Signal Chart. Refer to 

LAN-29, "CAN System Specification Chart"

.

BCM : DTC Logic

INFOID:0000000005240665

DTC DETECTION LOGIC

BCM : Diagnosis Procedure

INFOID:0000000005240666

1.

PERFORM SELF DIAGNOSTIC

1.

Turn ignition switch ON and wait for 2 seconds or more.

2.

Check “Self Diagnostic Result”.

Is DTC “U1000” displayed?

YES

>> Refer to 

LAN-20, "Trouble Diagnosis Flow Chart"

.

NO

>> Refer to 

GI-36, "Intermittent Incident"

.

IPDM E/R

IPDM E/R : Description

INFOID:0000000005240667

CAN (Controller Area Network) is a serial communication line for real time applications. It is an on-vehicle mul-
tiplex communication line with high data communication speed and excellent error detection ability. Modern
vehicle is equipped with many electronic control unit, and each control unit shares information and links with
other control units during operation (not independent). In CAN communication, control units are connected
with 2 communication lines (CAN-H line, CAN-L line) allowing a high rate of information transmission with less
wiring. Each control unit transmits/receives data but selectively reads required data only.
CAN Communication Signal Chart. Refer to 

LAN-29, "CAN System Specification Chart"

.

IPDM E/R : DTC Logic

INFOID:0000000005240668

DTC DETECTION LOGIC

IPDM E/R : Diagnosis Procedure

INFOID:0000000005240669

1.

PERFORM SELF DIAGNOSTIC

DTC

CONSULT-III display 

description

DTC Detection Condition

Possible cause

U1000

CAN COMM

When BCM cannot communicate CAN com-
munication signal continuously for 2 seconds 
or more.

CAN communication system

DTC

CONSULT-III display 

description

DTC Detection Condition

Possible cause

U1000

CAN COMM CIRCUIT

When IPDM E/R cannot communicate CAN 
communication signal continuously for 2 
seconds or more

CAN communication system

PCS-48

< DTC/CIRCUIT DIAGNOSIS >

[POWER DISTRIBUTION SYSTEM]

U1000 CAN COMM CIRCUIT

1.

Turn the ignition switch ON and wait for 2 seconds or more.

2.

Check “Self Diagnostic Result” of IPDM E/R.

Is “CAN COMM CIRCUIT” displayed?

YES

>> Refer to 

LAN-20, "Trouble Diagnosis Flow Chart"

.

NO

>> Refer to 

GI-36, "Intermittent Incident"

.

PCS

U1010 CONTROL UNIT (CAN)

PCS-49

< DTC/CIRCUIT DIAGNOSIS >

[POWER DISTRIBUTION SYSTEM]

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U1010 CONTROL UNIT (CAN)

BCM

BCM : DTC Logic

INFOID:0000000005240670

DTC DETECTION LOGIC

BCM : Diagnosis Procedure

INFOID:0000000005240671

1.

REPLACE BCM

When DTC “U1010” is detected, replace BCM.

>> Replace BCM. Refer to 

BCS-83, "Exploded View"

.

DTC

CONSULT-III display de-

scription

DTC Detection Condition

Possible cause

U1010

CONTROL UNIT(CAN)

BCM detected internal CAN communication circuit malfunction.

BCM