Nissan Sentra. Manual - part 163

ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)

BRC-39

< ECU DIAGNOSIS INFORMATION >

[VDC/TCS/ABS]

C

D

E

G

H

I

J

K

L

M

A

B

BRC

N

O

P

Note 1: Confirm tire pressure is normal.
Note 2: On and off timing for warning lamps and indicator lamps.
• Refer  to 

BRC-22, "VDC/TCS/ABS : VDC Function"

.

• Refer  to 

BRC-24, "VDC/TCS/ABS : TCS Function"

.

• Refer  to 

BRC-26, "VDC/TCS/ABS : ABS Function"

.

• Refer  to 

BRC-27, "VDC/TCS/ABS : EBD Function"

.

Fail-safe

INFOID:0000000009757825

VDC AND TCS FUNCTIONS

VDC warning lamp in combination meter turns ON when a malfunction occurs in system [ABS actuator and

electric unit (control unit)]. The control is suspended for VDC and TCS functions. However, ABS and EBD

functions operate normally.

USV[FL-RR]

VDC switch-over valve

When actuator (switch-over valve) is ac-
tive (“ACTIVE TEST” with CONSULT) or 
actuator relay is inactive (when in fail-
safe mode)

On

When actuator (switch-over valve) is not 
active and actuator relay is active (igni-
tion switch ON)

Off

USV[FR-RL]

VDC switch-over valve

When actuator (switch-over valve) is ac-
tive (“ACTIVE TEST” with CONSULT) or 
actuator relay is inactive (when in fail-
safe mode)

On

When actuator (switch-over valve) is not 
active and actuator relay is active (igni-
tion switch ON)

Off

HSV[FL-RR]

VDC switch-over valve

When actuator (switch-over valve) is ac-
tive (“ACTIVE TEST” with CONSULT) or 
actuator relay is inactive (when in fail-
safe mode)

On

When actuator (switch-over valve) is not 
active and actuator relay is active (igni-
tion switch ON)

Off

HSV[FR-RL]

VDC switch-over valve

When actuator (switch-over valve) is ac-
tive (“ACTIVE TEST” with CONSULT) or 
actuator relay is inactive (when in fail-
safe mode)

On

When actuator (switch-over valve) is not 
active and actuator relay is active (igni-
tion switch ON)

Off

V/R OUTPUT

Solenoid valve relay activated

When the solenoid valve relay is active 
(when ignition switch OFF)

On

When the solenoid valve relay is not ac-
tive (in the fail-safe mode)

Off

M/R OUTPUT

Actuator motor and motor relay activated

When the actuator motor and motor relay 
are active (

″ACTIVE TEST” with CON-

SULT)

On

When the actuator motor and motor relay 
are inactive

Off

ENGINE RPM

With engine running

With engine stopped

0 rpm

Engine running

Almost in accor-

dance with tachome-

ter display

 Monitor item

Display content

Data monitor

Condition

Reference value in 

normal operation

BRC-40

< ECU DIAGNOSIS INFORMATION >

[VDC/TCS/ABS]

ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)

ABS FUNCTION

ABS warning lamp and SLIP indicator lamp in combination meter turn ON when a malfunction occurs in sys-

tem [ABS actuator and electric unit (control unit)]. The control is suspended for VDC, TCS and ABS functions.

However, EBD functions operate normally.

EBD FUNCTION

ABS warning lamp, brake warning lamp and SLIP indicator lamp in combination meter turn ON when a mal-

function occurs in system [ABS actuator and electric unit (control unit)]. The control is suspended for VDC,

TCS, ABS and EBD functions.

DTC

Malfunction detected condition

Fail-safe condition

C1101

When an open circuit is detected in rear RH wheel sensor circuit.

The following functions are sus-
pended:
• VDC
• ABS
• EBD (only when both rear wheels 

are malfunctioning)

C1102

When an open circuit is detected in rear LH wheel sensor circuit.

C1103

When an open circuit is detected in front RH wheel sensor circuit.

C1104

When an open circuit is detected in front LH wheel sensor circuit.

C1105

• When a short circuit is detected in rear RH wheel sensor circuit.
• When power supply voltage of rear RH wheel sensor is in following state.
- Rear RH wheel sensor power supply voltage: 7.2 V 

≥ Rear RH wheel sensor pow-

er supply voltage

• When distance between rear RH wheel sensor and rear RH wheel sensor rotor is 

large.

• When installation of rear RH wheel sensor or rear RH wheel sensor rotor is not 

normal.

C1106

• When a short circuit is detected in rear LH wheel sensor circuit.
• When power supply voltage of rear LH wheel sensor is in following state.
- Rear LH wheel sensor power supply voltage: 7.2 V 

≥ Rear LH wheel sensor power 

supply voltage

• When distance between rear LH wheel sensor and rear LH wheel sensor rotor is 

large.

• When installation of rear LH wheel sensor or rear LH wheel sensor rotor is not nor-

mal.

C1107

• When a short circuit is detected in front RH wheel sensor circuit.
• When power supply voltage of front RH wheel sensor is in following state.
- Front RH wheel sensor power supply voltage: 7.2 V 

≥ Front RH wheel sensor 

power supply voltage

• When distance between front RH wheel sensor and front RH wheel sensor rotor 

is large.

• When installation of front RH wheel sensor or front RH wheel sensor rotor is not 

normal.

C1108

• When a short circuit is detected in front LH wheel sensor circuit.
• When power supply voltage of front LH wheel sensor is in following state.
- Front LH wheel sensor power supply voltage: 7.2 V 

≥ Front LH wheel sensor pow-

er supply voltage

• When distance between front LH wheel sensor and front LH wheel sensor rotor is 

large.

• When installation of front LH wheel sensor or front LH wheel sensor rotor is not 

normal.

C1109

• When ignition power supply voltage is in following state.
- Ignition power supply voltage: 10 V 

≥ Ignition power supply voltage.

- Ignition power supply voltage: 16 V 

≤ Ignition power supply voltage.

The following functions are sus-
pended:
• VDC
• TCS
• ABS
• EBD

C1110

When there is an internal malfunction in the ABS actuator and electric unit (control 
unit).

C1111

When a malfunction is detected in motor or motor relay.

The following functions are sus-
pended:
• VDC
• TCS
• ABS

ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)

BRC-41

< ECU DIAGNOSIS INFORMATION >

[VDC/TCS/ABS]

C

D

E

G

H

I

J

K

L

M

A

B

BRC

N

O

P

C1113

When a malfunction is detected in longitudinal G signal.

The following functions are sus-
pended:
• VDC
• TCS

C1115

When difference in wheel speed between any wheel and others is detected when 
the vehicle is driven, because of installation of tires other than specified.

The following functions are sus-
pended:
• VDC
• TCS
• ABS
• EBD

C1116

When stop lamp switch signal is not input when brake pedal operates.

The following functions are sus-
pended:
• VDC
• TCS

C1120

When a malfunction is detected in front LH ABS IN valve.

The following functions are sus-
pended:
• VDC
• TCS
• ABS
• EBD

C1121

When a malfunction is detected in front LH ABS OUT valve.

C1122

When a malfunction is detected in front RH ABS IN valve.

C1123

When a malfunction is detected in front RH ABS OUT valve.

C1124

When a malfunction is detected in rear LH ABS IN valve.

C1125

When a malfunction is detected in rear LH ABS OUT valve.

C1126

When a malfunction is detected in rear RH ABS IN valve.

C1127

When a malfunction is detected in rear RH ABS OUT valve.

C1130

When a malfunction is detected in ECM system.

The following functions are sus-
pended:
• VDC
• TCS

C1140

When a malfunction is detected in actuator relay.

The following functions are sus-
pended:
• VDC
• TCS
• ABS
• EBD

C1142

When a malfunction is detected in VDC pressure sensor.

The following functions are sus-
pended:
• VDC
• TCS

C1143

When a malfunction is detected in steering angle sensor.

C1144

When neutral position adjustment of steering angle sensor is not complete.

C1145

When a malfunction is detected in yaw rate signal, or signal line of yaw rate/side/
decel G sensor is open or shorted.

C1146

When a malfunction is detected in side G signal, or signal line of yaw rate/side/decel 
G sensor is open or shorted.

C1155

When brake fluid level low signal is detected.

The following functions are sus-
pended:
• VDC
• TCS

C1164

When a malfunction is detected in cut valve 1.

The following functions are sus-
pended:
• VDC
• TCS
• ABS
• EBD

C1165

When a malfunction is detected in cut valve 2.

C1166

When a malfunction is detected in suction valve 1.

C1167

When a malfunction is detected in suction valve 2.

C1170

When the information in ABS actuator and electric unit (control unit) is not the same.

The following functions are sus-
pended:
• VDC
• TCS
• ABS

DTC

Malfunction detected condition

Fail-safe condition

BRC-42

< ECU DIAGNOSIS INFORMATION >

[VDC/TCS/ABS]

ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)

DTC Inspection Priority Chart

INFOID:0000000009757826

When multiple DTCs are displayed simultaneously, check each one using the following priority list.

U1000

When CAN communication signal is not continuously transmitted or received for 2 
seconds or more.

The following functions are sus-
pended:
• VDC
• TCS

U1002

When ABS actuator and electric unit (control unit) is not transmitting or receiving 
CAN communication signal for 2 seconds or less.

U1010

When detecting error during the initial diagnosis of CAN controller of ABS actuator 
and electric unit (control unit).

DTC

Malfunction detected condition

Fail-safe condition

Priority

Detected item (DTC)

1

• U1000 CAN COMM CIRCUIT
• U1002 SYSTEM COMM(CAN)
• U1010 CONTROL UNIT(CAN)

2

• C1110 CONTROLLER FAILURE
• C1170 VARIANT CORDING

3

• C1130 ENGINE SIGNAL 1
• C1144 ST ANG SEN SIGNAL

4

• C1109 BATTERY VOLTAGE [ABNORMAL]
• C1111 PUMP MOTOR
• C1140  ACTUATOR  RLY

5

• C1101 RR RH SENSOR-1
• C1102 RR LH SENSOR-1
• C1103 FR RH SENSOR-1
• C1104 FR LH SENSOR-1
• C1105 RR RH SENSOR-2
• C1106 RR LH SENSOR-2
• C1107 FR RH SENSOR-2
• C1108 FR LH SENSOR-2
• C1113 G SENSOR
• C1115 ABS SENSOR [ABNORMAL SIGNAL]
• C1116 STOP LAMP SW
• C1120 FR LH IN ABS SOL
• C1121 FR LH OUT ABS SOL
• C1122 FR RH IN ABS SOL
• C1123 FR RH OUT ABS SOL
• C1124 RR LH IN ABS SOL
• C1125 RR LH OUT ABS SOL
• C1126 RR RH IN ABS SOL
• C1127 RR RH OUT ABS SOL
• C1142 PRESS SEN CIRCUIT
• C1143 ST ANG SEN CIRCUIT
• C1145 YAW RATE SENSOR
• C1146 SIDE G-SEN CIRCUIT
• C1164  CV1
• C1165  CV2
• C1166  SV1
• C1167  SV2

6

• C1155 BR FLUID LEVEL LOW