Infiniti EX35. Manual — part 297
BCS
DIAGNOSIS SYSTEM (BCM)
BCS-35
< FUNCTION DIAGNOSIS >
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NOTE:
NOTE: 182.7 kPa (1.9 kg/cm
2
, 26 psi): Standard air pressure is for 230 kPa (2.3 kg/cm
2
, 33 psi) vehicles.
ERASE SELF-DIAGNOSIS
With CONSULT-III
1.
Perform applicable inspection of malfunctioning item and then repair or replace.
2.
Turn ignition switch ON and select “SELF-DIAG RESULTS” mode for “AIR PRESSURE MONITOR” with
CONSULT-III.
3.
Touch “ERASE” on CONSULT-III screen to erase memory.
Without CONSULT-III
• In order to make it easier to find the cause of hard-to-duplicate malfunctions, malfunction information is
stored into the control unit as necessary during use by the user. This memory is not erased no matter how
many times the ignition switch is turned ON and OFF.
• However, this information is erased by turning ignition switch OFF after performing self-diagnostic or by
erasing the memory using the CONSULT-III.
AIR PRESSURE MONITOR : CONSULT-III Function (BCM - AIR PRESSURE MONI-
TOR)
INFOID:0000000003743942
WORK SUPPORT MODE
ID Read
The registered ID number is displayed.
ID Regist
WT-6, "ID REGISTRATION PROCEDURE : Special Repair Requirement"
SELF-DIAG RESULTS MODE
Operation Procedure
.
DATA MONITOR MODE
Screen of data monitor mode is displayed.
NOTE:
When malfunction is detected, CONSULT-III perform REAL-TIME DIAGNOSIS.
Also, any malfunction detected while in this mode will be displayed at real time.
45
Transmitter battery voltage low
(Front LH)
Battery voltage of front LH transmitter drops.
46
Transmitter battery voltage low
(Front RH)
Battery voltage of front RH transmitter drops.
47
Transmitter battery voltage low
(Rear RH)
Battery voltage of rear RH transmitter drops.
48
Transmitter battery voltage low
(Rear LH)
Battery voltage of rear LH transmitter drops.
52
Vehicle speed signal error
Vehicle speed signal error.
53
Control unit
Tire pressure monitoring system malfunction in BCM.
No blinking
Tire pressure warning check
switch
Tire pressure warning switch circuit is open.
–
Blinking
pattern
Items
Diagnostic items detected when···
Check item
BCS-36
< FUNCTION DIAGNOSIS >
DIAGNOSIS SYSTEM (BCM)
Display item list
NOTE:
Before performing the self-diagnosis, be sure to register the ID, or erase the actual malfunction location may
be different from that displayed on CONSULT-III.
ACTIVE TEST MODE
NOTE:
Before performing the self-diagnosis, be sure to register the ID, or erase the actual malfunction may be differ-
ent from that displayed on CONSULT-III.
TEST ITEM LIST
Monitor
Condition
Specification
AIR PRESS FL
AIR PRESS FR
AIR PRESS RR
AIR PRESS RL
• Drive vehicle for a few minutes.
or
• Ignition switch ON and transmitter activation
tool is transmitting activation signals.
Tire pressure (kPa, kg/cm
2
or Psi)
ID REGST FL1
ID REGST FR1
ID REGST RR1
ID REGST RL1
Ignition switch ON
Registration ID: Green
No registration: Red
WARNING LAMP
Low tire pressure warning lamp ON: on
Low tire pressure warning lamp OFF: off
BUZZER
Buzzer in combination meter ON: on
Buzzer in combination meter OFF: off
Test item
Content
WARNING LAMP
This test is able to check to check that the low tire pressure warning lamp turns on.
ID REGIST WARNING
This test is able to check to check that the buzzer sounds or the low tire pressure warning lamp
turns on.
FLASHER
This test is able to check to check that each turn signal lamp turns on.
HORN
This test is able to check to check that the horn sounds.
BCS
U1000 CAN COMM CIRCUIT
BCS-37
< COMPONENT DIAGNOSIS >
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COMPONENT DIAGNOSIS
U1000 CAN COMM CIRCUIT
Description
INFOID:0000000003137933
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-27, "CAN Communication Signal Chart"
DTC Logic
INFOID:0000000003137934
DTC DETECTION LOGIC
Diagnosis Procedure
INFOID:0000000003137935
1.
PERFORM SELF DIAGNOSTIC
1.
Turn ignition switch ON and wait for 2 seconds or more.
2.
Check “Self Diagnostic Result”.
Is “U1000: CAN COMM CIRCUIT” displayed?
YES
>> Refer to
LAN-18, "Trouble Diagnosis Flow Chart"
NO
>> Refer to
GI-38, "Intermittent Incident"
.
DTC
CONSULT-III display
description
DTC Detection Condition
Possible cause
U1000
CAN COMM CIRCUIT
When BCM cannot communicate CAN com-
munication signal continuously for 2 seconds
or more.
CAN communication system
BCS-38
< COMPONENT DIAGNOSIS >
U1010 CONTROL UNIT (CAN)
U1010 CONTROL UNIT (CAN)
DTC Logic
INFOID:0000000003137936
DTC DETECTION LOGIC
Diagnosis Procedure
INFOID:0000000003137937
1.
REPLACE BCM
When DTC “U1010: CONTROL UNIT (CAN)” is detected, replace BCM.
>> Replace BCM. Refer to
DTC
CONSULT-III display de-
scription
DTC Detection Condition
Possible cause
U1010
CONTROL UNIT (CAN)
BCM detected internal CAN communication circuit malfunction.
BCM
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