Nissan Frontier D22. Instruction — part 185

TROUBLE DIAGNOSIS

BRC-71

[VDC/TCS/ABS]

C

D

E

G

H

I

J

K

L

M

A

B

BRC

LFWA0031E

BRC-72

[VDC/TCS/ABS]

TROUBLE DIAGNOSIS

ABS Actuator and Electric Unit (Control Unit) Input/Output Signal Standard

EFS003I3

STANDARDS USING CIRCUIT TESTER AND OSCILLOSCOPE

CAUTION:

Connect ABS actuator and electric unit (control unit) connector, and then turn ignition switch ON.

Measurement

terminal

Measuring point

Standard value (Note 1)

Note: Error inspec-

tion checklist

+

–

1

Body
ground

Actuator motor

Actuator motor being
driven

Approx. 12V

BRC-101, "Inspec-
tion 7 Actuator
Motor, Motor Relay,
and Circuit"

Actuator motor stopped

Approx. 12V

4

Power supply (IGN)

Ignition switch ON

Approx. 12V

BRC-103, "Inspec-
tion 9 ABS Actua-
tor and Electric Unit
(Control Unit)
Power Supply and
Ground Circuit"

6

Yaw rate/side/decel G
sensor

Power

Approx. 8V to 16V

BRC-98, "Inspec-
tion 5 Yaw Rate/
Side/Decel G Sen-
sor and Circuit
Between Yaw Rate/
Side/Decel G Sen-
sor and ABS Actua-
tor and Electric Unit
(Control Unit)"

7

4WD switch

4WD is ON

Approx. 12V

4WD switch and cir-
cuit

4WD is OFF

Approx. 0V

8

Brake fluid level switch

Brake fluid is not enough

Approx. 12V

BRC-105, "Inspec-
tion 11 Brake Fluid
Level in Reservoir
Tank, Communica-
tion Circuit Between
ABS Actuator and
Electric Unit (Con-
trol Unit) and Brake
Fluid Level Switch"

Brake fluid is enough

Approx. 0V

11

CAN communication
input/output signal (H)

Ignition switch ON

BRC-119, "Inspec-
tion 23 CAN CIR-
CUIT 1 - CAN
Communication
System Failure"

LFIA0140E

PBIA0224J

TROUBLE DIAGNOSIS

BRC-73

[VDC/TCS/ABS]

C

D

E

G

H

I

J

K

L

M

A

B

BRC

13

Body
ground

VDC OFF indicator lamp

VDC OFF indicator lamp
ON (Note 4)

Approx. 12V

BRC-115, "Inspec-
tion 20 VDC OFF
Indicator Lamp
Does Not Come On
When Ignition
Switch Is Turned
On"

VDC OFF indicator lamp
OFF (Note 4)

Approx. 0V

15

CAN communication
input/output signal (L)

Ignition switch ON

BRC-119, "Inspec-
tion 23 CAN CIR-
CUIT 1 - CAN
Communication
System Failure"

16

Body
ground

Ground

—

Approx. 0

Ω

BRC-103, "Inspec-
tion 9 ABS Actua-
tor and Electric Unit
(Control Unit)
Power Supply and
Ground Circuit"

18

Pressure sensor

Power

Approx. 5V

BRC-96, "Inspec-
tion 3 Pressure
Sensor and Circuit
Between Pressure
Sensor and ABS
Actuator and Elec-
tric Unit (Control
Unit)"

19

Ground

Approx. 0V

20

Output signal

Approx. 0.5V to 4.5V

24

Ground

Approx. 0

Ω

BRC-98, "Inspec-
tion 5 Yaw Rate/
Side/Decel G Sen-
sor and Circuit
Between Yaw Rate/
Side/Decel G Sen-
sor and ABS Actua-
tor and Electric Unit
(Control Unit)"

25

—

Yaw rate/side/decel G
sensor

CAN-L

—

26

Body
ground

SLIP indicator lamp

SLIP indicator lamp ON
(Note 5)

Approx. 0V

BRC-113, "Inspec-
tion 19 SLIP Indica-
tor Lamp Does Not
Come On When
Ignition Switch is
Turned On"

SLIP indicator lamp OFF
(Note 5)

Approx. 12V

29

—

Yaw rate/side/decel G
sensor

CAN-H

—

BRC-98, "Inspec-
tion 5 Yaw Rate/
Side/Decel G Sen-
sor and Circuit
Between Yaw Rate/
Side/Decel G Sen-
sor and ABS Actua-
tor and Electric Unit
(Control Unit)"

32

Body
ground

Solenoid valve

Valve is active

Approx. 12V

BRC-99, "Inspec-
tion 6 Solenoid,
VDC Switching
Valve, Actuator
Relay and Circuits"

Valve is inactive

Approx. 12V

Measurement

terminal

Measuring point

Standard value (Note 1)

Note: Error inspec-

tion checklist

+

–

PBIA0223J

BRC-74

[VDC/TCS/ABS]

TROUBLE DIAGNOSIS

Note 1: When standard value is checked using a circuit tester for voltage measurement, care must be taken to avoid damage to connec-
tor terminals.
Note 2: Confirm tire pressure is normal.
Note 3: ON/OFF timing of ABS warning lamp
ON: For approximately 2 seconds after ignition switch is turned ON, or when a malfunction is detected.
OFF: Approximately 2 seconds after ignition switch is turned ON (when system is in normal operation) and VDC/TCS function is not
activated.
Note 4: ON/OFF timing of VDC OFF indicator lamp
ON: For approximately 2 seconds after ignition switch is turned ON, or when a malfunction is detected and VDC OFF switch is ON.
OFF: Approximately 2 seconds after ignition switch is turned ON (when system is in normal operation).
Note 5: SLIP indicator lamp ON/OFF timing
ON: For approximately 2 seconds after ignition switch is turned ON, or when a malfunction is detected and VDC/TCS function is acti-
vated while driving.
OFF: Approximately 2 seconds after ignition switch is turned ON (when system is in normal operation) and VDC/TCS function is not
activated.
Flashing: VDC/TCS function is active during driving

STANDARDS BY CONSULT-II

CAUTION:

Items displayed are data calculated by the control unit and may indicate normal operation even if out-
put circuit (harness) is open or shorted.

—

—

Front RH wheel sensor

—

—

BRC-94, "Inspec-
tion 1 Wheel Sen-
sor System"

—

—

Rear LH wheel sensor

—

—

40

Body
ground

VDC OFF switch

VDC OFF switch pressed

Approx. 0V

BRC-116, "Inspec-
tion 21 VDC OFF
Switch Is Inopera-
tive"

VDC OFF switch
released

Approx. 12V

41

Stop lamp signal

Brake pedal depressed

Approx. 12V

BRC-102, "Inspec-
tion 8 Stop Lamp
Switch and Circuit"

Brake pedal not depressed

Approx. 0V

—

—

Rear RH wheel sensor

—

—

BRC-94, "Inspec-
tion 1 Wheel Sen-
sor System"

44

Body
ground

ABS warning lamp

ABS warning lamp ON
(Note 3)

Approx. 12V

BRC-119, "Inspec-
tion 25 ABS Warn-
ing Lamp Does Not
Come On When
Ignition Switch Is
Turned On"

ABS warning lamp OFF
(Note 3)

Approx. 0V

—

—

Front LH wheel sensor

—

—

BRC-94, "Inspec-
tion 1 Wheel Sen-
sor System"

47

Body
ground

Ground

—

Approx. 0

Ω

BRC-103, "Inspec-
tion 9 ABS Actua-
tor and Electric Unit
(Control Unit)
Power Supply and
Ground Circuit"

Measurement

terminal

Measuring point

Standard value (Note 1)

Note: Error inspec-

tion checklist

+

–