ECU NISSAN TEANA 2008 Service Manual

BRC-14
< FUNCTION DIAGNOSIS >[ABS]
DIAGNOSIS SYSTEM [ABS ACTUATOR AND ELECTRIC UNIT (CONTROL
UNIT)]
NOTE:
1: A brief moment of On/Off condition occurs every 20 seconds after ignition switch turned ON. This is not malfunction because it is an
operation for checking.
ACTIVE TEST
CAUTION:
• Do not perform active test while driving vehicle.
 Make sure to completely bleed air from brake system.
 The active test cannot be started when ABS warning lamp and brake warning lamp are ON.
 ABS warning lamp and brake warning lamp are ON during active test.
NOTE:
 When active test is performed while depressing the pedal, the pedal depression amount will change. This is
normal. (Only solenoid valve and ABS motor.)
 “TEST IS STOPPED” is displayed 10 seconds after operation start.
 After “TEST IS STOPPED” is displayed, to perform test again.
Test Item
ABS SOLENOID VALVE
 Touch “Up”, “Keep” and “Down”. Then use screen monitor to check that solenoid valve operates as shown in
the table below.
FR RH IN SOL
(On/Off) (Note 1)×
Operation status of each solenoid valve FR RH OUT SOL
(On/Off) (Note 1)×
FR LH IN SOL
(On/Off) (Note 1)×
FR LH OUT SOL
(On/Off) (Note 1)×
RR RH IN SOL
(On/Off) (Note 1)×
RR RH OUT SOL
(On/Off) (Note 1)×
RR LH IN SOL
(On/Off) (Note 1)×
RR LH OUT SOL
(On/Off) (Note 1)×
MOTOR RELAY
(On/Off)×Motor and motor relay operation
ACTUATOR RLY
(On/Off) (Note 1)×Actuator relay operation
ABS WARN LAMP
(On/Off)×ABS warning lamp
EBD WARN LAMP
(On/Off)Brake warning lamp
EBD SIGNAL
(On/Off)EBD operation
ABS SIGNAL
(On/Off)ABS operation
EBD FAIL SIG
(On/Off)EBD fail-safe signal
ABS FAIL SIG
(On/Off)ABS fail-safe signal Monitor item (Unit)SELECT MONITOR ITEM
Remarks
ECU INPUT
SIGNALSMAIN SIGNALS

DIAGNOSIS SYSTEM [ABS ACTUATOR AND ELECTRIC UNIT (CONTROL
UNIT)]
BRC-15
< FUNCTION DIAGNOSIS >[ABS]
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*: On for 1 to 2 seconds after the touch, and then Off.
NOTE:
A brief moment of On/Off condition occurs every 20 seconds after ignition switch turned ON. This is not malfunction because it is an
operation for checking.
ABS MOTOR
 Touch “On” and “Off” on screen. Make sure motor relay and actuator relay operates as shown in table below.
NOTE:
A brief moment of On/Off condition occurs every 20 seconds after ignition switch turned ON. This is not malfunction because it is an
operation for checking.
ECU IDENTIFICATION
ABS actuator and electric unit (control unit) part number can be read.
Test item Display itemDisplay (Note)
Up Keep Down
FR RH SOLFR RH IN SOL Off On On
FR RH OUT SOL Off Off On*
FR LH SOLFR LH IN SOL Off On On
FR LH OUT SOL Off Off On*
RR RH SOLRR RH IN SOL Off On On
RR RH OUT SOL Off Off On*
RR LH SOLRR LH IN SOL Off On On
RR LH OUT SOL Off Off On*
Test item Display itemDisplay
On Off
ABS MOTORMOTOR RELAY On Off
ACTUATOR RLY (Note) On On

BRC-42
< ECU DIAGNOSIS >[ABS]
ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)
ECU DIAGNOSIS
ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)
Reference ValueINFOID:0000000003766848
VALUES ON THE DIAGNOSIS TOOL
CAUTION:
The display shows the control unit calculation data, so a normal value might be displayed even in the
event the output circuit (harness) is open or short-circuited.
Monitor item Display contentData monitor
ConditionReference value in
normal operation
FR LH SENSORWheel sensor calculated by front LH
wheel sensor signal is displayedVehicle stopped 0 [km/h (MPH)]
Vehicle running
(Note 1)Nearly matches the
speedometer dis-
play (± 10% or less)
FR RH SENSORWheel sensor calculated by front RH
wheel sensor signal is displayedVehicle stopped 0 [km/h (MPH)]
Vehicle running
(Note 1)Nearly matches the
speedometer dis-
play (± 10% or less)
RR LH SENSORWheel sensor calculated by rear LH
wheel sensor signal is displayedVehicle stopped 0 [km/h (MPH)]
Vehicle running
(Note 1)Nearly matches the
speedometer dis-
play (± 10% or less)
RR RH SENSORWheel sensor calculated by rear RH
wheel sensor signal is displayedVehicle stopped 0 [km/h (MPH)]
Vehicle running
(Note 1)Nearly matches the
speedometer dis-
play (± 10% or less)
STOP LAMP SW Stop lamp switch signal statusWhen brake pedal is depressed On
When brake pedal is not depressed Off
BATTERY VOLTBattery voltage supplied to the ABS ac-
tuator and electric unit (control unit)Ignition switch ON 10 – 16 V
FR RH IN SOLOperation status of each solenoid
valve Actuator (solenoid valve) is active (“AC-
TIVE TEST” with CONSULT-III)On
When the actuator (solenoid valve) is not
active and actuator relay is active (igni-
tion switch ON)Off
FR RH OUT SOLOperation status of each solenoid
valve Actuator (solenoid valve) is active (“AC-
TIVE TEST” with CONSULT-III)On
When the actuator (solenoid valve) is not
active and actuator relay is active (igni-
tion switch ON)Off
FR LH IN SOLOperation status of each solenoid
valve Actuator (solenoid valve) is active (“AC-
TIVE TEST” with CONSULT-III)On
When the actuator (solenoid valve) is not
active and actuator relay is active (igni-
tion switch ON)Off
FR LH OUT SOLOperation status of each solenoid
valve Actuator (solenoid valve) is active (“AC-
TIVE TEST” with CONSULT-III)On
When the actuator (solenoid valve) is not
active and actuator relay is active (igni-
tion switch ON)Off

ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)
BRC-43
< ECU DIAGNOSIS >[ABS]
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NOTE:
 1: Confirm tire pressure is normal.
 2: A brief moment of On/Off condition occurs every 20 seconds after ignition switch turned ON. This is not malfunction because it is an
operation for checking.
 3: On and off timing for warning lamp and indicator lamp.
- ABS warning lamp: Refer to BRC-40, "
Description".
- Brake warning lamp: Refer to BRC-41, "
Description". RR RH IN SOLOperation status of each solenoid
valve Actuator (solenoid valve) is active (“AC-
TIVE TEST” with CONSULT-III)On
When the actuator (solenoid valve) is not
active and actuator relay is active (igni-
tion switch ON)Off
RR RH OUT SOLOperation status of each solenoid
valve Actuator (solenoid valve) is active (“AC-
TIVE TEST” with CONSULT-III)On
When the actuator (solenoid valve) is not
active and actuator relay is active (igni-
tion switch ON)Off
RR LH IN SOLOperation status of each solenoid
valve Actuator (solenoid valve) is active (“AC-
TIVE TEST” with CONSULT-III)On
When the actuator (solenoid valve) is not
active and actuator relay is active (igni-
tion switch ON)Off
RR LH OUT SOLOperation status of each solenoid
valve Actuator (solenoid valve) is active (“AC-
TIVE TEST” with CONSULT-III)On
When the actuator (solenoid valve) is not
active and actuator relay is active (igni-
tion switch ON)Off
MOTOR RELAY Motor and motor relay operationWhen the motor relay and motor are op-
eratingOn
When the motor relay and motor are not
operatingOff
ACTUATOR RLY
(Note 2)Actuator relay operationWhen the actuator relay is operating On
When the actuator relay is not operating Off
ABS WARN LAMPABS warning lamp
(Note 3)When ABS warning lamp is ON On
When ABS warning lamp is OFF Off
EBD WARN LAMPBrake warning lamp
(Note 3)When brake warning lamp is ON On
When brake warning lamp is OFF Off
EBD SIGNAL EBD operationEBD is active On
EBD is inactive Off
ABS SIGNAL ABS operationABS is active On
ABS is inactive Off
EBD FAIL SIG EBD fail-safe signalIn EBD fail-safe On
EBD is normal Off
ABS FAIL SIG ABS fail-safe signalIn ABS fail-safe On
ABS is normal Off Monitor item Display contentData monitor
ConditionReference value in
normal operation

BRC-44
< ECU DIAGNOSIS >[ABS]
ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)
Wiring Diagram - BRAKE CONTROL SYSTEM -
INFOID:0000000003766849
JCFWM0154GB

ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)
BRC-45
< ECU DIAGNOSIS >[ABS]
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JCFWM0155GB

BRC-46
< ECU DIAGNOSIS >[ABS]
ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)
JCFWM0156GB

ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)
BRC-47
< ECU DIAGNOSIS >[ABS]
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Fail-SafeINFOID:0000000003766850
ABS, EBD SYSTEM
If ABS malfunction electrically, ABS warning lamp will turn on. If EBD malfunction electrically, brake warning
lamp and ABS warning lamp will turn on. Simultaneously, the ABS become one of the following conditions of
the fail-safe function.
JCFWM0157GB

BRC-48
< ECU DIAGNOSIS >[ABS]
ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)
 For malfunction of ABS, only the EBD is activated and the condition of vehicle is the same condition of vehi-
cles without ABS system.
NOTE:
ABS self-diagnosis sound may be heard. That is a normal condition because a self-diagnosis for “Ignition
switch ON” and “The first starting” are being performed.
 For malfunction of EBD, EBD and ABS become inoperative, and the condition of vehicle is the same as the
condition of vehicles without ABS, EBD system.
DTC No. IndexINFOID:0000000003766851
DTC Items (CONSULT screen terms) Reference
C1101 RR RH SENSOR-1
BRC-16, "
DTC Logic"C1102 RR LH SENSOR-1
C1103 FR RH SENSOR-1
C1104 FR LH SENSOR-1
C1105 RR RH SENSOR-2
BRC-19, "
DTC Logic"C1106 RR LH SENSOR-2
C1107 FR RH SENSOR-2
C1108 FR LH SENSOR-2
C1109 BATTERY VOLTAGE [ABNORMAL]BRC-22, "
DTC Logic"
C1110 CONTROLLER FAILUREBRC-24, "DTC Logic"
C 1111 P U M P M O T O RBRC-25, "DTC Logic"
C1115 ABS SENSOR [ABNORMAL SIGNAL]BRC-27, "DTC Logic"
C1116 STOP LAMP SWBRC-30, "DTC Logic"
C1120 FR LH IN ABS SOLBRC-32, "DTC Logic"
C1121 FR LH OUT ABS SOLBRC-34, "DTC Logic"
C1122 FR RH IN ABS SOLBRC-32, "DTC Logic"
C1123 FR RH OUT ABS SOLBRC-34, "DTC Logic"
C1124 RR LH IN ABS SOLBRC-32, "DTC Logic"
C1125 RR LH OUT ABS SOLBRC-34, "DTC Logic"
C1126 RR RH IN ABS SOLBRC-32, "DTC Logic"
C1127 RR RH OUT ABS SOLBRC-34, "DTC Logic"
C1140 ACTUATOR RLYBRC-36, "DTC Logic"
U1000 CAN COMM CIRCUIT
BRC-38, "DTC Logic"U1002 SYSTEM COMM (CAN)

ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)
BRC-61
< ON-VEHICLE REPAIR >[ABS]
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 To remove brake tube, use a flare nut wrench to prevent flare nuts and brake tube from being dam-
aged. To install, use flare nut torque wrench.
 Do not apply excessive impact to ABS actuator and electric unit (control unit), such as dropping it.
 Do not remove and install actuator by holding harness.
 After work is completed, bleed air from brake tube. Refer to BR-10, "
Bleeding Brake System".
 After installing harness connector in the ABS actuator and electric unit (control unit), make sure
connector is securely locked.
Install ABS actuator and electric unit (control unit) as per the follow-
ing steps.
1. Temporarily tighten mounting bolt (1) because the bracket (2) is
temporarily being hold.
2. Tighten mounting bolt (3) while holding the bracket.
3. Tighten mounting bolts to the specified torque in the order of (4),
(1).
JSFIA0271ZZ