Nissan X-Trail 32. Manual - part 2218

U1000-01 CAN COMM CIRCUIT

WT-45

< DTC/CIRCUIT DIAGNOSIS >

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U1000-01 CAN COMM CIRCUIT

Description

INFOID:0000000010715094

CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle mul-
tiplex communication line with high data communication speed and excellent error detection ability. Many elec-
tronic control units are equipped onto a vehicle, 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 communicates data but selectively reads required data only.

DTC Description

INFOID:0000000010715095

DTC DETECTION LOGIC

POSSIBLE CAUSE

• CAN communication malfunction
• Malfunction of BCM

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION

With CONSULT

1.

Drive for several minutes at a speed of 40 km/h (25 MPH) or more.

2.

Stop the vehicle.

3.

Perform self-diagnosis for “AIR PRESSURE MONITOR”.

Is DTC “U1000-01” detected?

YES

>> Proceed to 

WT-45, "Diagnosis Procedure"

.

NO-1

>> To check malfunction symptom before repair: Refer to 

GI-44, "Intermittent Incident"

.

NO-2

>> Confirmation after repair: INSPECTION END

Diagnosis Procedure

INFOID:0000000010715096

1.

PERFORM SELF-DIAGNOSTIC RESULT

With CONSULT

1.

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

2.

Check the “Self-Diagnostic Result” of “AIR PRESSURE MONITOR”.

Is DTC “U1000-01” detected?

YES

>> Refer to 

LAN-33, "CAN COMMUNICATION SYSTEM : CAN System Specification Chart"

.

NO

>> INSPECTION END

DTC No.

CONSULT screen item

(Trouble diagnosis content)

DTC Detection Condition

U1000-01

CAN COMM CIRCUIT
(CAN communication circuit)

BCM is not communicating CAN communication signal for 2 seconds or more.

WT-46

< DTC/CIRCUIT DIAGNOSIS >

U1010-49 CONTROL UNIT (CAN)

U1010-49 CONTROL UNIT (CAN)

Description

INFOID:0000000010715097

CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle mul-
tiplex communication line with high data communication speed and excellent error detection ability. Many elec-
tronic control units are equipped onto a vehicle, 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 communicates data but selectively reads required data only.

DTC Description

INFOID:0000000010715098

DTC DETECTION LOGIC

POSSIBLE CAUSE

Malfunction of BCM

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION

With CONSULT

1.

Drive for several minutes at a speed of 40 km/h (25 MPH) or more.

2.

Stop the vehicle.

3.

Perform self-diagnosis for “AIR PRESSURE MONITOR”.

Is DTC “U1010-49” detected?

YES >> Proceed 

to 

WT-46, "Diagnosis Procedure"

.

NO-1

>> To check malfunction symptom before repair: Refer to 

GI-44, "Intermittent Incident"

.

NO-2

>> Confirmation after repair: INSPECTION END

Diagnosis Procedure

INFOID:0000000010715099

1.

CHECK BCM

Check BCM harness connector for disconnection or deformation.

Is the inspection result normal? 

YES

>> Replace BCM. Refer to 

BCS-121, "Removal and Installation"

.

NO

>> Repair or replace error-detected parts.

DTC

CONSULT screen item

(Trouble diagnosis content)

DTC Detection Condition

U1010-49

CONTROL UNIT (CAN)
[Control unit (CAN)]

Detecting error during the initial diagnosis of CAN controller of BCM.

LOW TIRE PRESSURE WARNING LAMP

WT-47

< DTC/CIRCUIT DIAGNOSIS >

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LOW TIRE PRESSURE WARNING LAMP

Component Function Check

INFOID:0000000010715100

1.

CHECK THE ILLUMINATION OF THE LOW TIRE PRESSURE WARNING LAMP

Check that the low tire pressure warning lamp is turned OFF after illuminating for approximately 1 second,
when the ignition switch is turned ON.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Perform trouble diagnosis. Refer to 

WT-47, "Diagnosis Procedure"

. 

Diagnosis Procedure

INFOID:0000000010715101

1.

POWER SUPPLY AND GROUND CIRCUIT

Check power supply and ground circuit. Refer to 

BCS-114, "Diagnosis Procedure"

.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace damaged parts.

2.

PERFORM SELF-DIAGNOSIS

With CONSULT

Perform self-diagnosis for “AIR PRESSURE MONITOR”.
Is any DTC detected?

YES

>> Check the DTC. Refer to 

WT-21, "DTC Index"

. 

NO

>> GO TO 3.

3.

CHECK LOW TIRE PRESSURE WARNING LAMP SIGNAL

With CONSULT

1.

Turn the ignition switch ON.

CAUTION:

Never start the engine.

2.

Select “ACTIVE TEST” in “AIR PRESSURE MONITOR”.

3.

Touch “WARNING LAMP” to turn ON the low tire pressure warning lamp.

When “ACTIVE TEST” is performed, does the low tire pressure warning lamp in the combination meter turn
ON?

YES

>> Perform combination meter diagnosis. Refer to 

MWI-118, "Work flow"

.

NO

>> Replace the BCM. Refer to 

BCS-121, "Removal and Installation"

.

WT-48

< SYMPTOM DIAGNOSIS >

TPMS

SYMPTOM DIAGNOSIS

TPMS

Symptom Table 

INFOID:0000000010715102

LOW TIRE PRESSURE WARNING LAMP SYMPTOM CHART

Diagnosis items

Symptom

(Ignition switch 

ON)

Low tire pressure warning lamp

Cause

Action

Low tire pres-
sure warning 
lamp

The low tire pres-
sure warning lamp 
illuminates for 1 
second, then turns 
OFF.

Wake-up operation for all 
tire pressure sensors at 
wheels is completed.

No system malfunctions

The low tire pres-
sure warning lamp 
turns ON and stays 
illuminated.

Low tire pressure

Check the tire pressure for 
all wheels and adjust to the 
specified value. Refer to 

WT-66, "Tire Air Pressure"

. 

Tire pressure monitoring 
system configuration do 
not be performed. 

Perform configuration. Re-
fer to 

WT-31, "Work Proce-

dure"

.

Tire pressure sensor ID 
registration do not be 
performed. 

Perform ID registration. Re-
fer to 

WT-30, "Work Proce-

dure"

.

SEIA0592E

SEIA0598E