Nissan Frontier D22. Manual — part 172

TROUBLE DIAGNOSIS

BRC-19

[ABS]

C

D

E

G

H

I

J

K

L

M

A

B

BRC

LFWA0023E

BRC-20

[ABS]

TROUBLE DIAGNOSIS

LFWA0024E

TROUBLE DIAGNOSIS

BRC-21

[ABS]

C

D

E

G

H

I

J

K

L

M

A

B

BRC

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

EFS003GU

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-39, "Inspec-
tion 5 Actuator
Motor, Motor Relay,
and Circuit"

Actuator motor stopped

Approx. 12V

3

Pressure switch (2WD
models)

Brake pedal depressed

Approx. 12V

BRC-37, "Inspec-
tion 3 Pressure
Switch and Circuit
Between Pressure
Switch and ABS
Actuator and Elec-
tric Unit (Control
Unit)"

Brake pedal not depressed

Approx. 0V

4

Power supply

Ignition switch ON

Approx. 12V

BRC-41, "Inspec-
tion 7 ABS Actua-
tor and Electric Unit
(Control Unit)
Power Supply and
Ground Circuit"

16

Ground

—

Approx. 0

Ω

BRC-41, "Inspec-
tion 7 ABS Actua-
tor and Electric Unit
(Control Unit)
Power Supply and
Ground Circuit"

32

Solenoid valve

Valve is active

Approx. 12V

BRC-38, "Inspec-
tion 4 Solenoid
Valve and Circuits"

Valve is inactive

Approx. 12V

—

—

Front RH wheel sensor

Note 3

—

BRC-35, "Inspec-
tion 1 Wheel Sen-
sor System"

—

—

Rear LH wheel sensor
(4WD)
Rear sensor (2WD)

41

Body
ground

Stop lamp signal

Brake pedal depressed

Approx. 12V

BRC-40, "Inspec-
tion 6 Stop Lamp
Switch and Circuit"

Brake pedal not depressed

Approx. 0V

—

—

Rear RH wheel sensor
(4WD)

Note 3

—

BRC-35, "Inspec-
tion 1 Wheel Sen-
sor System"

LFIA0140E

BRC-22

[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: 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).
Note 3: Confirm tire pressure is normal.

44

Body
ground

ABS warning lamp

ABS warning lamp ON
(Note 2)

Approx. 12V

BRC-42, "Inspec-
tion 8 ABS Warning
Lamp Does Not
Come On When
Ignition Switch Is
Turned On"

ABS warning lamp OFF
(Note 2)

Approx. 0V

—

—

Front LH wheel sensor

Note 3

—

BRC-35, "Inspec-
tion 1 Wheel Sen-
sor System"

47

Body
ground

Ground

—

Approx. 0

Ω

BRC-41, "Inspec-
tion 7 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

+

–