Nissan X-Trail 32. Manual - part 206

BRC-290

< DTC/CIRCUIT DIAGNOSIS >

[FORWARD EMERGENCY BRAKING]

C1B5D FEB OPE COUNT LIMIT

C1B5D FEB OPE COUNT LIMIT

DTC Logic

INFOID:0000000010766641

DTC DETECTION LOGIC

NOTE:
If “C1B5D” detected, perform the FEB system action test and check FEB system operates normally.

POSSIBLE CAUSE

FEB system operated 3 times within ignition switch ON.

FAIL-SAFE

FEB system is canceled.

DTC CONFIRMATION PROCEDURE

1.

PERFORM FEB SYSTEM ACTION TEST

Perform the FEB system action test. 
Is there any malfunction symptom?

YES

>> Refer to 

BRC-290, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000010766642

1.

DTC CHECK SELF-DIAGNOSIS RESULTS

1.

Turn ignition switch OFF.

2.

Turn ignition switch ON.

3.

Perform “All DTC Reading” with CONSULT.

4.

Check if the “C1B5D” is detected as the current malfunction in “Self Diagnostic Result” of “LASER/
RADAR”.

Is C1B5D detected as current malfunction?

YES

>> Replace the distance sensor. Refer to 

BRC-304, "Removal and Installation"

.

NO

>> Perform FEB system action test. Refer to 

BRC-268, "Description"

.

DTC

Trouble diagnosis name

DTC detecting condition

C1B5D

FEB OPE COUNT LIMIT
(Forward Emergency Braking oper-
ation count limit)

FEB system operated 3 times within ignition switch ON.

U0121 VDC CAN 2

BRC-291

< DTC/CIRCUIT DIAGNOSIS >

[FORWARD EMERGENCY BRAKING]

C

D

E

G

H

I

J

K

L

M

A

B

BRC

N

O

P

U0121 VDC CAN 2

DTC Logic

INFOID:0000000010766643

DTC DETECTION LOGIC

POSSIBLE CAUSE

ABS actuator and electric unit (control unit)

FAIL-SAFE

FEB system is canceled.

DTC CONFIRMATION PROCEDURE

1.

CHECK DTC PRIORITY

If DTC “U0121” is displayed with DTC “U1000”, first diagnose the DTC “U1000”.

Is applicable DTC detected?

YES

>> Perform diagnosis of applicable. Refer to 

BRC-296, "DTC Logic"

.

NO

>> GO TO 2.

2.

PERFORM DTC CONFIRMATION PROCEDURE

1.

Start the engine.

2.

Turn the FEB system ON. 

3.

Perform “All DTC Reading” with CONSULT. 

4.

Check if the “U0121” is detected as the current malfunction in “Self Diagnostic Result” of “LASER/
RADAR”. 

Is “U0121” detected as the current malfunction?

YES

>> Refer to 

BRC-291, "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:0000000010766644

1.

CHECK DTC PRIORITY

If DTC “U0121” is displayed with DTC “U1000”, first diagnose the DTC “U1000”.

Is applicable DTC detected?

YES

>> Perform diagnosis of applicable. Refer to 

BRC-296, "DTC Logic"

.

NO

>> GO TO 2.

2.

CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) SELF-DIAGNOSIS RESULTS

Check if any DTC is detected in “Self Diagnostic Result” of “ABS”. 

Is any DTC detected?

YES

>> Perform diagnosis on the detected DTC and repair or replace the malfunctioning parts. Refer to

BRC-84, "DTC Index"

. 

NO

>> Replace the distance sensor. Refer to 

BRC-304, "Removal and Installation"

. 

DTC

Trouble diagnosis name

DTC detecting condition

U0121

VDC CAN CIR2
(VDC CAN circuit2)

If distance sensor detects an error signal that is received from ABS actuator and 
electric unit (control unit) via CAN communication

BRC-292

< DTC/CIRCUIT DIAGNOSIS >

[FORWARD EMERGENCY BRAKING]

U0126 STRG SEN CAN 1

U0126 STRG SEN CAN 1

DTC Logic

INFOID:0000000010766645

DTC DETECTION LOGIC

POSSIBLE CAUSE

Steering angle sensor

FAIL-SAFE

FEB system is canceled.

DTC CONFIRMATION PROCEDURE

1.

CHECK DTC PRIORITY

If DTC “U0126” is displayed with DTC “U1000”, first diagnose the DTC “U1000”.

Is applicable DTC detected?

YES

>> Perform diagnosis of applicable. Refer to 

BRC-296, "DTC Logic"

.

NO

>> GO TO 2.

2.

PERFORM DTC CONFIRMATION PROCEDURE

1.

Start the engine.

2.

Turn the FEB system ON. 

3.

Perform “All DTC Reading” with CONSULT. 

4.

Check if the “U0126” is detected as the current malfunction in “Self Diagnostic Result” of “LASER/
RADAR”. 

Is “U0126” detected as the current malfunction?

YES

>> Refer to 

BRC-292, "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:0000000010766646

1.

CHECK DTC PRIORITY

If DTC “U0126” is displayed with DTC “U1000”, first diagnose the DTC “U1000”.

Is applicable DTC detected?

YES

>> Perform diagnosis of applicable. Refer to 

BRC-296, "DTC Logic"

.

NO

>> GO TO 2.

2.

CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) SELF-DIAGNOSIS RESULTS

Check if any DTC is detected in “Self Diagnostic Result” of “ABS”. 

Is any DTC detected?

YES

>> Perform diagnosis on the detected DTC and repair or replace the malfunctioning parts. Refer to

BRC-84, "DTC Index"

. 

NO

>> Replace the distance sensor. Refer to 

BRC-304, "Removal and Installation"

. 

DTC

Trouble diagnosis name

DTC detecting condition

U0126

STRG SEN CAN CIR1
(Steering sensor CAN circuit1)

If distance sensor detects an error signal that is received from steering angle sen-
sor via CAN communication

U0401 ECM CAN 1

BRC-293

< DTC/CIRCUIT DIAGNOSIS >

[FORWARD EMERGENCY BRAKING]

C

D

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BRC

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U0401 ECM CAN 1

DTC Logic

INFOID:0000000010766647

DTC DETECTION LOGIC

POSSIBLE CAUSE

ECM

FAIL-SAFE

FEB system is canceled.

DTC CONFIRMATION PROCEDURE

1.

CHECK DTC PRIORITY

If DTC “U0401” is displayed with DTC “U1000”, first diagnose the DTC “U1000”.

Is applicable DTC detected?

YES

>> Perform diagnosis of applicable. Refer to 

BRC-296, "DTC Logic"

.

NO

>> GO TO 2.

2.

PERFORM DTC CONFIRMATION PROCEDURE

1.

Start the engine.

2.

Turn the FEB system ON. 

3.

Perform “All DTC Reading” with CONSULT. 

4.

Check if the “U0401” is detected as the current malfunction in “Self Diagnostic Result” of “LASER/
RADAR”. 

Is “U0401” detected as the current malfunction?

YES

>> Refer to 

BRC-293, "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:0000000010766648

1.

CHECK DTC PRIORITY

If DTC “U0401” is displayed with DTC “U1000”, first diagnose the DTC “U1000”.

Is applicable DTC detected?

YES

>> Perform diagnosis of applicable. Refer to 

BRC-296, "DTC Logic"

.

NO

>> GO TO 2.

2.

CHECK ECM SELF-DIAGNOSIS RESULTS

Check if any DTC is detected in “Self Diagnostic Result” of “ENGINE”. 

Is any DTC detected?

YES

>> Perform diagnosis on the detected DTC and repair or replace the malfunctioning parts. Refer to

EC-109, "DTC Index"

 (MR20DD) or 

EC-517, "DTC Index"

 (QR25DE) or 

EC-908, "DTC Index"

(R9M).

NO

>> Replace the distance sensor. Refer to 

BRC-304, "Removal and Installation"

. 

DTC

Trouble diagnosis name

DTC detecting condition

U0401

ECM CAN CIR1
(ECM CAN circuit1)

If distance sensor detects an error signal that is received from ECM via CAN com-
munication