Nissan Sentra B18 (2020-2025) Service Manual: Abs Actuator and Electric Unit (control Unit)

Nissan Sentra B18 (2020-2025) Service Manual / Brakes / Brake Control System :: Vdc/tcs/abs / Ecu Diagnosis Information / Abs Actuator and Electric Unit (control Unit)

Values on the Diagnosis Tool

Values on the Diagnosis Tool Note:

The following table includes information (items) inapplicable to this Nissan Sentra vehicle: For information (items) applicable to this vehicle, refer to CONSULT display items.

Monitor item	Condition	Reference valve in normal operation
FR LH SENSOR	Nissan Sentra Vehicle stopped	0.00 km/h (MPH)
FR LH SENSOR	When driving^*1	Nearly matches the speedometer display (within ±10%)
FR RH SENSOR	Nissan Sentra Vehicle stopped	0.00 km/h (MPH)
FR RH SENSOR	When driving^*1	Nearly matches the speedometer display (within ±10%)
RR LH SENSOR	Nissan Sentra Vehicle stopped	0.00 km/h (MPH)
RR LH SENSOR	When driving^*1	Nearly matches the speedometer display (within ±10%)
RR RH SENSOR	Nissan Sentra Vehicle stopped	0.00 km/h (MPH)
RR RH SENSOR	When driving^*1	Nearly matches the speedometer display (within ±10%)
ACCEL POS SIG	Never depress accelerator pedal (with ignition switch ON)	0%
ACCEL POS SIG	Depress accelerator pedal (with ignition switch ON)	0 – 100%
SIDE G-SENSOR	Nissan Sentra Vehicle stopped	Approx. 0 m/s2
	Right turn	Negative value
	Left turn	Positive value
BATTERY VOLT	Ignition switch ON	10 – 16 V
DECEL G-SEN	When stopped	Approx. 0 G
	During acceleration	Positive value
	During deceleration	Negative value
ENGINE SPEED	Engine stopped	0 rpm
ENGINE SPEED	Engine running	Almost same reading as tachometer
STR ANGLE SIG	When driving straight	±2.5° deg
	When steering wheel is steered to RH by 90°	Approx. +90° deg
	When steering wheel is steered to LH by 90°	Approx. −90° deg
PRESS SENSOR	Brake pedal not depressed	Approx. 0 bar
PRESS SENSOR	Brake pedal depressed	(−40) – 300 bar (Pressure increases according to pedal effort.)
VSO	Nissan Sentra Vehicle stopped	0.00 km/h (MPH)
VSO	When driving¹	Nearly matches the speedometer display (within ±10%)
FR WHEEL SPD	Nissan Sentra Vehicle stopped	0 rpm
FR WHEEL SPD	When driving¹	Increases according to Nissan Sentra vehicle speed
FL WHEEL SPD	Nissan Sentra Vehicle stopped	0 rpm
FL WHEEL SPD	When driving¹	Increases according to Nissan Sentra vehicle speed
RR WHEEL SPD	Nissan Sentra Vehicle stopped	0 rpm
RR WHEEL SPD	When driving¹	Increases according to Nissan Sentra vehicle speed
RL WHEEL SPD	Nissan Sentra Vehicle stopped	0 rpm
RL WHEEL SPD	When driving¹	Increases according to Nissan Sentra vehicle speed
YAW RATE SEN	Nissan Sentra Vehicle stopped	Approx. 0 deg/s
	Turning right	Negative value
	Turning left	Positive value
Tire diameter	Always	Tire diameter (mm)
FR RH IN SOL^*2	When front RH ABS IN valve is active	On
FR RH IN SOL^*2	When front RH ABS IN valve is not activated	Off
FR RH OUT SOL^*2	When front RH ABS OUT valve is active	On
FR RH OUT SOL^*2	When front RH ABS OUT valve is not activated	Off
FR LH IN SOL^*2	When front LH ABS IN valve is active	On
FR LH IN SOL^*2	When front LH ABS IN valve is not activated	Off
FR LH OUT SOL^*2	When front LH ABS OUT valve is active	On
FR LH OUT SOL^*2	When front LH ABS OUT valve is not activated	Off
RR RH IN SOL^*2	When rear RH ABS IN valve is active	On
RR RH IN SOL^*2	When rear RH ABS IN valve is not activated	Off
RR RH OUT SOL^*2	When rear RH ABS OUT valve is active	On
RR RH OUT SOL^*2	When rear RH ABS OUT valve is not activated	Off
RR LH IN SOL^*2	When rear LH ABS IN valve is active	On
RR LH IN SOL^*2	When rear LH ABS IN valve is not activated	Off
RR LH OUT SOL^*2	When rear LH ABS OUT valve is active	On
RR LH OUT SOL^*2	When rear LH ABS OUT valve is not activated	Off
EBD WARN LAMP	Brake warning lamp is ON^*3	On
EBD WARN LAMP	Brake warning lamp is OFF^*3	Off
STOP LAMP SW	Brake pedal depressed	On
STOP LAMP SW	Brake pedal not depressed	Off
ABS WARN LAMP	ABS warning lamp is ON^*3	On
ABS WARN LAMP	ABS warning lamp is OFF^*3	Off
MOTOR RELAY	When ABS motor and motor relay are active	On
MOTOR RELAY	When ABS motor and motor relay are not activated	Off
ACTUATOR RLY^*2	When ABS actuator relay is active	On
ACTUATOR RLY^*2	When ABS actuator relay is not activated (in fail-safe mode)	Off
OFF LAMP	VDC OFF indicator lamp is ON^*3	On
OFF LAMP	VDC OFF indicator lamp is OFF^*3	Off
OFF SW	VDC setting : OFF	On
OFF SW	VDC setting : ON	Off
SLIP/VDC LAMP	VDC warning lamp is ON^*3	On
SLIP/VDC LAMP	VDC warning lamp is OFF^*3	Off
TRQ DOWN SIG	When requesting torque down	On
TRQ DOWN SIG	When not requesting torque down	Off
EBD SIGNAL	When EBD function is active	On
EBD SIGNAL	When EBD function is not activated	Off
ABS SIGNAL	When ABS function is active	On
ABS SIGNAL	When ABS function is not activated	Off
TCS SIGNAL	When TCS function is active	On
TCS SIGNAL	When TCS function is not activated	Off
VDC SIGNAL	When VDC function is active	On
VDC SIGNAL	When VDC function is not activated	Off
EBD FAIL SIG	When EBD function is fail-safe	On
EBD FAIL SIG	When EBD function is normal	Off
ABS FAIL SIG	When ABS function is fail-safe	On
ABS FAIL SIG	When ABS function is normal	Off
TCS FAIL SIG	When TCS function is fail-safe	On
TCS FAIL SIG	When TCS function is normal	Off
VDC FAIL SIG	When VDC function is fail-safe	On
VDC FAIL SIG	When VDC function is normal	Off
GEAR	When driving	Depending on shift status
NEXT GR POSI	When driving	Depending on shift status
N POSI SIG	When selector lever is in the N position	On
N POSI SIG	When selector lever is in the other than N position	Off
P POSI SIG	When selector lever is in the P position	On
P POSI SIG	When selector lever is in the other than P position	Off
R POSI SIG	When selector lever is in the R position	On
R POSI SIG	When selector lever is in the other than R position	Off
CRANKING SIG	When cranking	On
CRANKING SIG	When other than cranking	Off
FLUID LEV SW	When brake fluid level switch is ON (brake fluid level is less than the specified level)	On
FLUID LEV SW	When brake fluid level switch is OFF	Off
PARK BRAKE SW	When parking brake is active	On
PARK BRAKE SW	When parking brake is released	Off
CV1	When cut valve 1 is active	On
CV1	When cut valve 1 is not activated	Off
CV2	When cut valve 2 is active	On
CV2	When cut valve 2 is not activated	Off
SV1	When suction valve 1 is active	On
SV1	When suction valve is not activated	Off
SV2	When suction valve 2 is active	On
SV2	When suction valve is not activated	Off
OHB FAIL	When OHB is fail-safe	On
OHB FAIL	When OHB is normal	Off
HBA FAIL	When brake assist function is fail-safe	On
HBA FAIL	When brake assist function is normal	Off
OHB SIG	When OHB is active	On
OHB SIG	When OHB is not activated	Off
HBA SIG	When brake assist function is active	On
HBA SIG	When brake assist function is not activated	Off
USS SIG^*4	When hill start assist function is active	On
USS SIG^*4	When hill start assist function is not activated	Off
Wheel speed repro impossible	When driving	On
Wheel speed repro impossible	Nissan Sentra Vehicle stopped	Off
Low voltage repro impossible	Battery voltage is low	On
Low voltage repro impossible	Battery voltage is normal	Off

*1: Confirm tire pressure is standard value.

*2: Display occasionally changes On/Off for a moment after ignition switch is turned ON. This is operation for checking purposes and is not a malfunction.

*3: Refer to Warning Lamp/Indicator Lamp.For ON/OFF conditions of each warning lamp and indicator lamp.

*4: “USS” means “Hill start assist” or “Uphill Start Support”.

Fail-Safe

Fail-Safe

VDC FUNCTION, TCS FUNCTION, BRAKE ASSIST FUNCTION AND HILL START ASSIST FUNCTION

VDC warning lamp in combination meter turn ON when a malfunction occurs in system [ABS actuator and electric unit (control unit)]. The control is suspended for VDC function, TCS function, brake assist function and hill start assist function. The Nissan Sentra vehicle status becomes the same as models without VDC function, TCS function, brake assist function and hill start assist function. However, ABS function and EBD function are operated normally.

ABS FUNCTION

ABS warning lamp and VDC warning lamp in combination meter turn ON when a malfunction occurs in system [ABS actuator and electric unit (control unit)]. The control is suspended for VDC function, TCS function, ABS function, brake assist function and hill start assist function. The Nissan Sentra vehicle status becomes the same as models without VDC function, TCS function, ABS function, brake assist function and hill start assist function. However, EBD function is operated normally.

Note:

ABS self-diagnosis sound may be heard the same as in the normal condition, because self-diagnosis is performed when ignition switch turns ON and when Nissan Sentra vehicle initially starts.

EBD FUNCTION

ABS warning lamp, brake warning lamp and VDC warning lamp in combination meter turn ON when a malfunction occurs in system [ABS actuator and electric unit (control unit)]. The control is suspended for VDC function, TCS function, ABS function, EBD function, brake assist function and hill start assist function. The Nissan Sentra vehicle status becomes the same as models without VDC function, TCS function, ABS function, EBD function, brake assist function and hill start assist function.

DTC	Fail-safe condition
C1040-04	The following functions are suspended: VDC function TCS function ABS function EBD function Brake assist function Hill start assist function
C1041-04
C1044-04
C1045-04
C1048-04
C1048-49
C1049-04
C104A-04
C104B-04
C104C-04
C104D-04
C104E-04
C104F-04
C1050-04
C1051-04
C1051-1C
C1056-16
C1056-17
C1058-04
C1058-49
C105D-7B	The following functions are suspended: VDC function TCS function Brake assist function Hill start assist function
C105E-54
C1060-97	The following functions are suspended: VDC function (when 1 wheel or more are malfunction) TCS function (when 1 wheel or more are malfunction) ABS function (when 1 wheel or more are malfunction) EBD function (only when more than 2 wheel are malfunction) Brake assist function (when 1 wheel or more are malfunction) Hill start assist function (when 1 wheel or more are malfunction)
C1061-1D
C1061-64
C1062-97
C1063-1D
C1063-64
C1064-97
C1065-1D
C1065-64
C1066-97
C1067-1D
C1067-64
C106B-64	The following functions are suspended: VDC function TCS function Brake assist function Hill start assist function
C106C-01
C106E-01
C106E-54
C106E-61
C106E-64
C106E-86
C106E-96
C1070-01
C1070-54
C1070-61
C1070-64
C1071-01
C1071-54
C1071-61
C1071-64
C1072-01
C1072-61
C1072-64
C1073-01	The following functions are suspended: Brake assist function
C1073-64
C1076-55	The following functions are suspended: VDC function TCS function ABS function EBD function Brake assist function Hill start assist function
C1080-86	The following functions are suspended: VDC function TCS function Brake assist function Hill start assist function
C1082-86
C1083-86
C1085-86
C1086-86	The following functions are suspended: VDC function TCS function ABS function EBD function Brake assist function Hill start assist function
C1087-86	The following functions are suspended: VDC function TCS function Brake assist function Hill start assist function
C1090-86	Normal control
C1097-86	The following functions are suspended: VDC function TCS function Hill start assist function
U0073-00	The following functions are suspended: VDC function TCS function Brake assist function Hill start assist function
U0076-00
U1321-55	The following functions are suspended: VDC function TCS function ABS function EBD function Brake assist function Hill start assist function
U2140-87	The following functions are suspended: VDC function TCS function Brake assist function Hill start assist function
U2141-87
U214E-87
U214F-87	The following functions are suspended: VDC function TCS function ABS function EBD function Brake assist function Hill start assist function
U2156-87	The following functions are suspended: VDC function TCS function Brake assist function Hill start assist function
U215B-55
U2176-87
U2252-87
U2276-87

Dtc Inspection Priority Chart

DTC Inspection Priority Chart

When multiple DTCs are displayed simultaneously, check one by one depending on the following priority list:

Priority	Detected item (DTC)
1	U0073-00 Control module comm Bus A Off U0076-00 Control module comm Bus D Off U1321-55 Not configuration
2	U2140-87 CAN comm err (ECM) U2141-87 CAN comm err (TCM) U214E-87 CAN comm err (combination meter) U214F-87 CAN comm err (BCM) U2156-87 CAN comm err (steering angle sensor) U215B-55 CAN comm err (IPDM E/R) U2176-87 CAN comm err (CCM) U2252-87 CAN comm err (ADAS control unit) U2276-87 CAN comm err (CCM)
3	C1058-04 Control unit C1058-49 Control unit C1076-55 Not configured
4	C106E-01 Steering angle sensor [ELECTRICAL MALFUNCTION] C106E-54 Steering angle sensor [MISSING CALIBRATION] C106E-61 Steering angle sensor [SIGNAL CALCULATION ERROR] C106E-64 Steering angle sensor [SIGNAL PLAUSIBILITY ERROR] C106E-86 Steering angle sensor [SIGNAL INVALID] C106E-96 Steering angle sensor [CMPNENT INTERNAL MLFNCTN] C1080-86 ECM C1082-86 CAN comm err (TCM) C1083-86 Steering angle sensor C1085-86 Combination meter C1086-86 CAN comm err (BCM) C1087-86 IPDM E/R C1090-86 ADAS control unit C1097-86 Chassis control module
5	C1051-04 Pump motor C1051-1C Pump motor C1056-16 Battery power supply C1056-17 Battery power supply
6	C1040-04 Cut valve 1 C1041-04 Cut valve 2 C1044-04 Suction valve 1 C1045-04 Suction valve 2 C1048-04 Valve relay C1048-49 Valve relay C1049-04 FR LH ABS IN valve C104A-04 FR LH ABS OUT valve C104B-04 FR RH ABS IN valve C104C-04 FR RH ABS OUT valve C104D-04 RR LH ABS IN valve C104E-04 RR LH ABS OUT valve C104F-04 RR RH ABS IN valve C1050-04 RR RH ABS OUT valve C105E-54 Pressure sensor not calibration C1060-97 Wheel sensor FL C1061-1D Wheel sensor FL C1061-64 Wheel sensor FL C1062-97 Wheel sensor FR C1063-1D Wheel sensor FR C1063-64 Wheel sensor FR C1064-97 Wheel sensor RL C1065-1D Wheel sensor RL C1065-64 Wheel sensor RL C1066-97 Wheel sensor RR C1067-1D Wheel sensor RR C1067-64 Wheel sensor RR C106B-64 Stop lamp SW C106C-01 Pressure sensor C1070-01 Side G sensor [ELECTRICAL MALFUNCTION] C1070-54 Side G sensor [MISSING CALIBRATION] C1070-61 Side G sensor [SIGNAL CALCULATION ERROR] C1070-64 Side G sensor [SIGNAL PLAUSIBILITY ERROR] C1071-01 Decel G sensor [ELECTRICAL MALFUNCTION] C1071-54 Decel G sensor [MISSING CALIBRATION] C1071-61 Decel G sensor [SIGNAL CALCULATION ERROR] C1071-64 Decel G sensor [SIGNAL PLAUSIBILITY ERROR] C1072-01 Yaw rate sensor C1072-61 Yaw rate sensor C1072-64 Yaw rate sensor C1073-01 Vacuum sensor C1073-64 Vacuum sensor
7	C105D-7B Brake fluid level low

Dtc Index

DTC Index

Self Diagnostic Result
DTC	Display item	VDC warning lamp	ABS warning lamp	Brake warning lamp	Refer to
C1040-04	Cut valve 1	ON	ON	ON	DTC Description
C1041-04	Cut valve 2	ON	ON	ON	DTC Description
C1044-04	Suction valve 1	ON	ON	ON	DTC Description
C1045-04	Suction valve 2	ON	ON	ON	DTC Description
C1048-04	Valve relay	ON	ON	ON	DTC Description
C1048-49	Valve relay	ON	ON	ON	DTC Description
C1049-04	FR LH ABS IN valve	ON	ON	ON	DTC Description
C104A-04	FR LH ABS OUT valve	ON	ON	ON	DTC Description
C104B-04	FR RH ABS IN valve	ON	ON	ON	DTC Description
C104C-04	FR RH ABS OUT valve	ON	ON	ON	DTC Description
C104D-04	RR LH ABS IN valve	ON	ON	ON	DTC Description
C104E-04	RR LH ABS OUT valve	ON	ON	ON	DTC Description
C104F-04	RR RH ABS IN valve	ON	ON	ON	DTC Description
C1050-04	RR RH ABS OUT valve	ON	ON	ON	DTC Description
C1051-04	Pump motor	ON	ON	ON	DTC Description
C1051-1C	Pump motor	ON	ON	ON	DTC Description
C1056-16	Battery power supply	ON	ON	ON	DTC Description
C1056-17	Battery power supply	ON	ON	ON	DTC Description
C1058-04	Control unit	ON	ON	ON	DTC Description
C1058-49	Control unit	ON	ON	ON	DTC Description
C105D-7B	Brake fluid level low	ON	OFF	ON	DTC Description
C105E-54	Pressure sensor not calibration	ON	OFF	ON	DTC Description
C1060-97	Wheel sensor FL	ON	ON	ON^*	DTC Description
C1061-1D	Wheel sensor FL	ON	ON	ON^*	DTC Description
C1061-64	Wheel sensor FL	ON	ON	ON^*	DTC Description
C1062-97	Wheel sensor FR	ON	ON	ON^*	DTC Description
C1063-1D	Wheel sensor FR	ON	ON	ON^*	DTC Description
C1063-64	Wheel sensor FR	ON	ON	ON^*	DTC Description
C1064-97	Wheel sensor RL	ON	ON	ON^*	DTC Description
C1065-1D	Wheel sensor RL	ON	ON	ON^*	DTC Description
C1065-64	Wheel sensor RL	ON	ON	ON^*	DTC Description
C1066-97	Wheel sensor RR	ON	ON	ON^*	DTC Description
C1067-1D	Wheel sensor RR	ON	ON	ON^*	DTC Description
C1067-64	Wheel sensor RR	ON	ON	ON	DTC Description
C106B-64	Stop lamp SW	ON	OFF	OFF	DTC Description
C106C-01	Pressure sensor	ON	OFF	ON	DTC Description
C106E-01	Steering angle sensor [ELECTRICAL MALFUNCTION]	ON	OFF	OFF	DTC Description
C106E-54	Steering angle sensor [MISSING CALIBRATION]	ON	OFF	OFF	DTC Description
C106E-61	Steering angle sensor [SIGNAL CALCULATION ERROR]	ON	OFF	OFF	DTC Description
C106E-64	Steering angle sensor [SIGNAL PLAUSIBILITY ERROR]	ON	OFF	OFF	DTC Description
C106E-86	Steering angle sensor [SIGNAL INVALID]	ON	OFF	OFF	DTC Description
C106E-96	Steering angle sensor [CMPNENT INTERNAL MLFNCTN]	ON	OFF	OFF	DTC Description
C1070-01	Side G sensor [ELECTRICAL MALFUNCTION]	ON	OFF	OFF	DTC Description
C1070-54	Side G sensor [MISSING CALIBRATION]	ON	OFF	OFF	DTC Description
C1070-61	Side G sensor [SIGNAL CALCULATION ERROR]	ON	OFF	OFF	DTC Description
C1070-64	Side G sensor [SIGNAL PLAUSIBILITY ERROR]	ON	OFF	OFF	DTC Description
C1071-01	Decel G sensor [ELECTRICAL MALFUNCTION]	ON	OFF	OFF	DTC Description
C1071-54	Decel G sensor [MISSING CALIBRATION]	ON	OFF	OFF	DTC Description
C1071-61	Decel G sensor [SIGNAL CALCULATION ERROR]	ON	OFF	OFF	DTC Description
C1071-64	Decel G sensor [SIGNAL PLAUSIBILITY ERROR]	ON	OFF	OFF	DTC Description
C1072-01	Yaw rate sensor	ON	OFF	OFF	DTC Description
C1072-61	Yaw rate sensor	ON	OFF	OFF	DTC Description
C1072-64	Yaw rate sensor	ON	OFF	OFF	DTC Description
C1073-01	Vacuum sensor	OFF	OFF	ON	DTC Description
C1073-64	Vacuum sensor	OFF	OFF	ON	DTC Description
C1076-55	Not configured	ON	ON	OFF	DTC Description
C1080-86	ECM	ON	OFF	OFF	DTC Description
C1082-86	CAN comm err (TCM)	ON	OFF	OFF	DTC Description
C1083-86	Steering angle sensor	ON	OFF	OFF	DTC Description
C1085-86	Combination meter	ON	OFF	OFF	DTC Description
C1086-86	CAN comm err (BCM)	ON	ON	ON	DTC Description
C1087-86	IPDM E/R	ON	OFF	OFF	DTC Description
C1090-86	ADAS control unit	ON	OFF	OFF	DTC Description
C1097-86	Chassis control module	ON	OFF	OFF	DTC Description
U0073-00	Control module comm Bus A Off	ON	OFF	OFF	DTC Description
U0076-00	Control module comm Bus D Off	ON	OFF	OFF	DTC Description
U1321–55	Not configuration	ON	ON	OFF	DTC Description
U2140-87	CAN comm err (ECM)	ON	OFF	OFF	DTC Description
U2141-87	CAN comm err (TCM)	ON	OFF	OFF	DTC Description
U214E-87	CAN comm err (combination meter)	ON	OFF	OFF	DTC Description
U214F-87	CAN comm err (BCM)	ON	OFF	OFF	DTC Description
U2156-87	CAN comm err (steering angle sensor)	ON	OFF	OFF	DTC Description
U215B-55	CAN comm err (IPDM E/R)	ON	OFF	OFF	DTC Description
U2176-87	CAN comm err (CCM)	ON	OFF	OFF	DTC Description
U2252-87	CAN comm err (ADAS control unit)	OFF	OFF	OFF	DTC Description
U2276-87	CAN comm err (CCM)	OFF	OFF	OFF	DTC Description

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