Nissan X-Trail 32. Manual — part 201
BRC-270
< DTC/CIRCUIT DIAGNOSIS >
[FORWARD EMERGENCY BRAKING]
C1A01 POWER SUPPLY CIRCUIT 1, C1A02 POWER SUPPLY CIRCUIT 2
C1A01 POWER SUPPLY CIRCUIT 1, C1A02 POWER SUPPLY CIRCUIT 2
DTC Logic
INFOID:0000000010766405
DTC DETECTION LOGIC
POSSIBLE CAUSE
• Connector, harness, fuse
• Distance sensor
FAIL-SAFE
FEB system is canceled.
DTC CONFIRMATION PROCEDURE
1.
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 “C1A01” or “C1A02” is detected as the current malfunction in “Self Diagnostic Result” of
“RADAR”.
Is “C1A01” or “C1A02” detected as the current malfunction?
YES
>> Refer to
BRC-270, "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:0000000010766406
1.
CHECK DISTANCE SENSOR POWER SUPPLY AND GROUND CIRCUIT
Check power supply and ground circuit of distance sensor. Refer to
BRC-300, "Diagnosis Procedure"
Is the inspection result normal?
YES
>> Replace the distance sensor. Refer to
BRC-304, "Removal and Installation"
.
NO
>> Repair or replace the malfunctioning parts.
DTC
Trouble diagnosis name
DTC detecting condition
C1A01
POWER SUPPLY CIR
(Power supply circuit)
The battery voltage sent to distance sensor remains less than 7.9 V for 5 sec-
onds
C1A02
POWER SUPPLY CIR 2
(Power supply circuit 2)
The battery voltage sent to distance sensor remains more than 19.3 V for 5
seconds
C1A03 VEHICLE SPEED SENSOR
BRC-271
< DTC/CIRCUIT DIAGNOSIS >
[FORWARD EMERGENCY BRAKING]
C
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BRC
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C1A03 VEHICLE SPEED SENSOR
DTC Logic
INFOID:0000000010766623
DTC DETECTION LOGIC
POSSIBLE CAUSE
• Wheel speed sensor
• ABS actuator and electric unit (control unit)
• Vehicle speed sensor A/T (output speed sensor)
• TCM
• Distance sensor
FAIL-SAFE
FEB system is canceled.
DTC CONFIRMATION PROCEDURE
1.
CHECK DTC PRIORITY
If DTC “C1A03” is displayed with DTC “U1000” or “C1A04”, first diagnose the DTC “U1000” or “C1A04”.
Is applicable DTC detected?
YES
>>
Perform diagnosis of applicable.
• C1A04: Refer to
NO
>> GO TO 2.
2.
PERFORM DTC CONFIRMATION PROCEDURE
1.
Start the engine.
2.
Turn the FEB system ON.
3.
Drive the vehicle at 30 km/h (19 MPH) or more.
CAUTION:
Always drive safely.
4.
Stop the vehicle.
5.
Perform “All DTC Reading” with CONSULT.
6.
Check if the “C1A03” is detected as the current malfunction in “Self Diagnostic Result” of “LASER/
RADAR”.
Is “C1A03” detected as the current malfunction?
YES
>> Refer to
BRC-271, "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:0000000010766624
1.
CHECK DTC PRIORITY
If DTC “C1A03” is displayed with DTC “U1000” or “C1A04”, first diagnose the DTC “U1000” or “C1A04”.
Is applicable DTC detected?
YES
>>
Perform diagnosis of applicable.
• C1A04: Refer to
NO
>> GO TO 2.
2.
CHECK DATA MONITOR
1.
Start the engine.
DTC
Trouble diagnosis name
DTC detecting condition
C1A03
VHCL SPEED SE CIRC
(Vehicle speed sensor circuit)
If the vehicle speed signal (wheel speed) from ABS actuator and electric unit (con-
trol unit) and the A/T vehicle speed sensor signal (output shaft revolution signal)
from TCM, received by the distance sensor via CAN communication, are inconsis-
tent
BRC-272
< DTC/CIRCUIT DIAGNOSIS >
[FORWARD EMERGENCY BRAKING]
C1A03 VEHICLE SPEED SENSOR
2.
Drive the vehicle.
3.
Check that the value of “VHCL SPD AT” is almost the same as the value of “VHCL SPEED SE” in “DATA
MONITOR” of “LASER/RADAR”.
CAUTION:
Be careful of the vehicle speed.
Is the inspection result normal?
YES
>> Replace the distance sensor. Refer to
BRC-304, "Removal and Installation"
.
NO
>> GO TO 3.
3.
CHECK TCM SELF-DIAGNOSIS RESULTS
1.
Perform “All DTC Reading”.
2.
Check if any DTC is detected in “Self Diagnostic Result” of “TRANSMISSION”.
Is any DTC detected?
YES
>> Perform diagnosis on the detected DTC and repair or replace the malfunctioning parts. Refer to
NO
>> GO TO 4.
4.
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
NO
>> Replace the distance sensor. Refer to
BRC-304, "Removal and Installation"
.
C1A04 ABS/TCS/VDC SYSTEM
BRC-273
< DTC/CIRCUIT DIAGNOSIS >
[FORWARD EMERGENCY BRAKING]
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C1A04 ABS/TCS/VDC SYSTEM
DTC Logic
INFOID:0000000010766625
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 “C1A04” is displayed with DTC “U1000”, first diagnose the DTC “U1000”.
Is applicable DTC detected?
YES
>> Perform diagnosis of applicable. Refer to
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 “C1A04” is detected as the current malfunction in “Self Diagnostic Result” of “LASER/
RADAR”.
Is “C1A04” detected as the current malfunction?
YES
>> Refer to
BRC-273, "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:0000000010766626
1.
CHECK DTC PRIORITY
If DTC “C1A04” is displayed with DTC “U1000”, first diagnose the DTC “U1000”.
Is applicable DTC detected?
YES
>> Perform diagnosis of applicable. Refer to
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-188, "Diagnosis Procedure"
.
NO
>> Replace the distance sensor. Refer to
BRC-304, "Removal and Installation"
.
DTC
Trouble diagnosis name
DTC detecting condition
C1A04
ABS/TCS/VDC CIRC
(ABS/TCS/VDC circuit)
If a malfunction occurs in the VDC/TCS/ABS system
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