Nissan Frontier D40. Manual — part 84
BRC-34
< COMPONENT DIAGNOSIS >
[TYPE 1]
C1111 ABS MOTOR, MOTOR RELAY SYSTEM
C1111 ABS MOTOR, MOTOR RELAY SYSTEM
Description
INFOID:0000000005275062
PUMP
The pump returns the brake fluid stored in the reservoir to the master cylinder by reducing the pressure.
MOTOR
The motor drives the pump according to the signals transmitted by the ABS actuator and electric unit (control
unit).
DTC Logic
INFOID:0000000005275063
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
CHECK SELF-DIAGNOSIS RESULTS
Check the self-diagnosis results.
Is above displayed on the self-diagnosis display?
YES
>> Proceed to diagnosis procedure. Refer to
.
NO
>> Inspection End
Diagnosis Procedure
INFOID:0000000005275064
Regarding Wiring Diagram information, refer to
BRC-51, "Wiring Diagram - BRAKE CONTROL SYSTEM -
.
1.
CONNECTOR INSPECTION
1.
Turn ignition switch OFF.
2.
Disconnect ABS actuator and electric unit (control unit) connector.
3.
Check terminals for deformation, disconnect, looseness, and so on. If any malfunction is found, repair or
replace terminals.
4.
Reconnect connectors and then perform the self-diagnosis. Refer to
.
Is any item indicated on the self-diagnosis display?
YES
>> GO TO 2
NO
>> Poor connection of connector terminals. Repair or replace connector.
2.
CHECK ABS MOTOR AND MOTOR RELAY POWER SUPPLY CIRCUIT
DTC
Display item
Malfunction detected condition
Possible cause
C1111
PUMP MOTOR
During the actuator motor operating with ON, when the
actuator motor turns OFF, or when the control line for ac-
tuator motor relay is open.
• Harness or connector
• ABS actuator and electric unit
(control unit)
During the actuator motor operating with OFF, when the
actuator motor turns ON, or when the control line for relay
is shorted to ground.
Self-diagnosis results
PUMP MOTOR
C1111 ABS MOTOR, MOTOR RELAY SYSTEM
BRC-35
< COMPONENT DIAGNOSIS >
[TYPE 1]
C
D
E
G
H
I
J
K
L
M
A
B
BRC
N
O
P
1.
Turn ignition switch OFF.
2.
Disconnect ABS actuator and electric unit (control unit) connec-
tor.
3.
Check voltage between the ABS actuator and electric unit (con-
trol unit) connector E125 terminal 1 and ground.
Is the inspection result normal?
YES
>> GO TO 3
NO
>> Repair or replace malfunctioning components.
3.
CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) GROUND CIRCUIT
Check continuity between ABS actuator and electric unit (control
unit) connector E125 terminals 16, 47 and ground.
Is the inspection result normal?
YES
>> Replace ABS actuator and electric unit (control unit).
BRC-71, "Removal and Installation"
NO
>> Repair or replace malfunctioning components.
Component Inspection
INFOID:0000000005275065
1.
CHECK ACTIVE TEST
1.
On “ACTIVE TEST”, select “ABS MOTOR”.
2.
Touch On and Off on screen. Make sure motor relay and actuator relay operate as shown in table below.
Is the inspection result normal?
YES
>> Inspection End
NO
>> Go to diagnosis procedure. Refer to
ABS actuator and electric unit (control unit)
—
Voltage
Connector
Terminal
E125
1
Ground
Battery voltage
AWFIA0017ZZ
ABS actuator and electric unit (control unit)
—
Continuity
Connector
Terminal
E125
16, 47
Ground
Yes
AWFIA0016ZZ
Operation
On
Off
MOTOR RELAY
On
Off
ACTUATOR RLY
On
On
BRC-36
< COMPONENT DIAGNOSIS >
[TYPE 1]
C1115 WHEEL SENSOR
C1115 WHEEL SENSOR
Description
INFOID:0000000005275066
When the sensor rotor rotates, the magnetic field changes. It converts the magnetic field changes to current
signals (rectangular wave) and transmits them to the ABS actuator and electric unit (control unit).
DTC Logic
INFOID:0000000005275067
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
CHECK SELF-DIAGNOSIS RESULTS
Check the self-diagnosis results.
Is above displayed on the self-diagnosis display?
YES
>> Proceed to diagnosis procedure. Refer to
.
NO
>> Inspection End
Diagnosis Procedure
INFOID:0000000005549003
Regarding Wiring Diagram information, refer to
BRC-51, "Wiring Diagram - BRAKE CONTROL SYSTEM -
.
CAUTION:
Do not check between wheel sensor terminals.
1.
CONNECTOR INSPECTION
1.
Disconnect the ABS actuator and electric unit (control unit) connector and wheel sensor of malfunctioning
code.
2.
Check the terminals for deformation, disconnection, looseness or damage.
Is the inspection result normal?
YES
>> GO TO 2
NO
>> Repair or replace as necessary.
2.
CHECK WHEEL SENSOR OUTPUT SIGNAL
1.
Connect ABS active wheel sensor tester (J-45741) to wheel sensor using appropriate adapter.
2.
Turn on the ABS active wheel sensor tester power switch.
NOTE:
The green POWER indicator should illuminate. If the POWER indicator does not illuminate, replace the
battery in the ABS active wheel sensor tester before proceeding.
3.
Spin the wheel of the vehicle by hand and observe the red SENSOR indicator on the ABS active wheel
sensor tester. The red SENSOR indicator should flash on and off to indicate an output signal.
NOTE:
If the red SENSOR indicator illuminates but does not flash, reverse the polarity of the tester leads and
retest.
Does the ABS active wheel sensor tester detect a signal?
YES
>> GO TO 3
DTC
Display item
Malfunction detected condition
Possible cause
C1115
ABS SENSOR
[ABNORMAL SIGNAL]
When wheel sensor input signal is malfunctioning.
• Harness or connector
• Wheel sensor
• ABS actuator and electric unit
(control unit)
Self-diagnosis results
ABS SENSOR [ABNORMAL SIGNAL]
C1115 WHEEL SENSOR
BRC-37
< COMPONENT DIAGNOSIS >
[TYPE 1]
C
D
E
G
H
I
J
K
L
M
A
B
BRC
N
O
P
NO
>> Replace the wheel sensor. Refer to
BRC-69, "Removal and Installation"
.
3.
CHECK TIRES
Check the inflation pressure, wear and size of each tire.
Is the inspection result normal?
YES
>> GO TO 4
NO
>> Adjust tire pressure or replace tire(s).
4.
CHECK WHEEL BEARINGS
Check wheel bearing axial end play. Refer to
FAX-5, "On-Vehicle Inspection and Service"
(rear).
Is the inspection result normal?
YES
>> GO TO 5
NO
>> Repair or replace as necessary. Refer to
FAX-8, "Removal and Installation"
(front) or
(rear).
5.
CHECK WIRING HARNESS FOR SHORT CIRCUIT
1.
Disconnect ABS actuator and electric unit (control unit) connec-
tor and wheel sensor connector of malfunction code No.
2.
Check continuity between wheel sensor connector terminals
and ground.
Is the inspection result normal?
YES
>> GO TO 6
NO
>> Repair the circuit.
6.
CHECK WIRING HARNESS FOR OPEN CIRCUIT
1.
Check continuity between ABS actuator and electric unit (control unit) connector and the malfunctioning
wheel sensor connector.
Is the inspection result normal?
YES
>> Replace the ABS actuator and electric unit (control unit). Refer to
BRC-71, "Removal and Installa-
.
NO
>> Repair the circuit.
Component Inspection
INFOID:0000000005549004
1.
CHECK DATA MONITOR
On “DATA MONITOR”, select “FR LH SENSOR”, “FR RH SENSOR”, “RR LH SENSOR”, and “RR RH SEN-
SOR”, and check the vehicle speed.
Continuity should not exist.
AWFIA0188ZZ
Wheel sensor
ABS actuator and
electric unit (control unit)
Wheel sensor
Continuity
Connector
Terminal
Connector
Terminal
Front LH
E125
45
E18
1
Yes
46
2
Front RH
34
E117
1
33
2
Rear LH
36
C11
1
37
2
Rear RH
43
C10
1
42
2
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