Toyota Avalon (XX50) 2019-2022 Service & Repair Manual: Open Circuit in Right Front Speed Sensor Circuit (C1330-C1467)

C1330

Open Circuit in Right Front Speed Sensor Circuit

An open or short in the speed sensor signal circuit.

• Front speed sensor RH
• Front skid control sensor wire RH*
• Speed sensor circuit
• Front speed sensor installation

C1331

Open Circuit in Left Front Speed Sensor Circuit

An open or short in the speed sensor signal circuit.

• Front speed sensor LH
• Front skid control sensor wire LH*
• Speed sensor circuit
• Front speed sensor installation

C1332

Open Circuit in Right Rear Speed Sensor Circuit

An open or short in the speed sensor signal circuit.

• Rear speed sensor RH (rear axle hub and bearing assembly RH)
• Skid control sensor wire RH (No. 1 parking brake wire assembly)
• Speed sensor circuit
• Rear speed sensor installation

C1333

Open Circuit in Left Rear Speed Sensor Circuit

An open or short in the speed sensor signal circuit.

• Rear speed sensor LH (rear axle hub and bearing assembly LH)
• Skid control sensor wire LH (No. 2 parking brake wire assembly)
• Speed sensor circuit
• Rear speed sensor installation

C1464

Front Speed Sensor RH Circuit

Any of the following is detected:

• The vehicle speed is more than 50.4 km/h (31 mph) and pulses are not detected for 0.4 seconds.
• After the initial start or restart and when the vehicle speed has reached 12 km/h (7 mph), a wheel speed of 0 km/h (0 mph) is detected.
• After the initial start or restart and when the vehicle speed has reached 20 km/h (12 mph), a front wheel speed of 0 km/h (0 mph) is detected.
• The following conditions are met for 9 to 72 seconds or more (varies depending on the driving conditions):
  • The difference between the speed of the fastest wheel and the speed of the slowest wheel is 5% or more of the vehicle speed. (If the speed of any wheel is less than 5 km/h (3 mph), a speed difference of up to 15% is allowable.)
  • The vehicle speed is less than 100 km/h (62 mph) and the difference between the speed of the fastest wheel and the speed of the slowest wheel is 5 km/h (3 mph) or more. (If the speed of any wheel is less than 5 km/h (3 mph), a speed difference of up to 16 km/h (10 mph) is allowable.)
  • The vehicle speed is 100 km/h (62 mph) or more and the difference between the speed of the fastest wheel and the speed of the slowest wheel is 6% or more of the vehicle speed. (If the speed of any wheel is less than 5 km/h (3 mph), a speed difference of up to 15% is allowable.)
• Wheel speed sensor signal fluctuation is equivalent to 98 G or more, or alternates between 50 G or more and -50 G or less.
• An abnormal signal is received from a wheel speed sensor.

• Front speed sensor RH
• Front skid control sensor wire RH*
• Speed sensor circuit
• Front speed sensor rotor RH (front axle hub sub-assembly RH)
• Front speed sensor installation
• Skid control ECU (brake actuator assembly)

C1465

Front Speed Sensor LH Circuit

Any of the following is detected:

• The vehicle speed is more than 50.4 km/h (31 mph) and pulses are not detected for 0.4 seconds.
• After the initial start or restart and when the vehicle speed has reached 12 km/h (7 mph), a wheel speed of 0 km/h (0 mph) is detected.
• After the initial start or restart and when the vehicle speed has reached 20 km/h (12 mph), a front wheel speed of 0 km/h (0 mph) is detected.
• The following conditions are met for 9 to 72 seconds or more (varies depending on the driving conditions):
  • The difference between the speed of the fastest wheel and the speed of the slowest wheel is 5% or more of the vehicle speed. (If the speed of any wheel is less than 5 km/h (3 mph), a speed difference of up to 15% is allowable.)
  • The vehicle speed is less than 100 km/h (62 mph) and the difference between the speed of the fastest wheel and the speed of the slowest wheel is 5 km/h (3 mph) or more. (If the speed of any wheel is less than 5 km/h (3 mph), a speed difference of up to 16 km/h (10 mph) is allowable.)
  • The vehicle speed is 100 km/h (62 mph) or more and the difference between the speed of the fastest wheel and the speed of the slowest wheel is 6% or more of the vehicle speed. (If the speed of any wheel is less than 5 km/h (3 mph), a speed difference of up to 15% is allowable.)
• Wheel speed sensor signal fluctuation is equivalent to 98 G or more, or alternates between 50 G or more and -50 G or less.
• An abnormal signal is received from a wheel speed sensor.

• Front speed sensor LH
• Front skid control sensor wire LH*
• Speed sensor circuit
• Front speed sensor rotor LH (front axle hub sub-assembly LH)
• Front speed sensor installation
• Skid control ECU (brake actuator assembly)

C1466

Rear Speed Sensor RH Circuit

Any of the following is detected:

• The vehicle speed is more than 50.4 km/h (31 mph) and pulses are not detected for 0.4 seconds.
• After the initial start or restart and when the vehicle speed has reached 12 km/h (7 mph), a wheel speed of 0 km/h (0 mph) is detected.
• After the initial start or restart and when the vehicle speed has reached 20 km/h (12 mph), a rear wheel speed of 0 km/h (0 mph) is detected.
• The following conditions are met for 9 to 72 seconds or more (varies depending on the driving conditions):
  • The difference between the speed of the fastest wheel and the speed of the slowest wheel is 5% or more of the vehicle speed. (If the speed of any wheel is less than 5 km/h (3 mph), a speed difference of up to 15% is allowable.)
  • The vehicle speed is less than 100 km/h (62 mph) and the difference between the speed of the fastest wheel and the speed of the slowest wheel is 5 km/h (3 mph) or more. (If the speed of any wheel is less than 5 km/h (3 mph), a speed difference of up to 16 km/h (10 mph) is allowable.)
  • The vehicle speed is 100 km/h (62 mph) or more and the difference between the speed of the fastest wheel and the speed of the slowest wheel is 6% or more of the vehicle speed. (If the speed of any wheel is less than 5 km/h (3 mph), a speed difference of up to 15% is allowable.)
• Wheel speed sensor signal fluctuation is equivalent to 98 G or more, or alternates between 50 G or more and -50 G or less.
• An abnormal signal is received from a wheel speed sensor.

• Rear speed sensor RH (rear axle hub and bearing assembly RH)
• Speed sensor circuit
• Skid control sensor wire RH (No. 1 parking brake wire assembly)
• Rear speed sensor rotor RH (rear axle hub and bearing assembly RH)
• Rear speed sensor installation
• Skid control ECU (brake actuator assembly)

C1467

Rear Speed Sensor LH Circuit

Any of the following is detected:

• The vehicle speed is more than 50.4 km/h (31 mph) and pulses are not detected for 0.4 seconds.
• After the initial start or restart and when the vehicle speed has reached 12 km/h (7 mph), a wheel speed of 0 km/h (0 mph) is detected.
• After the initial start or restart and when the vehicle speed has reached 20 km/h (12 mph), a rear wheel speed of 0 km/h (0 mph) is detected.
• The following conditions are met for 9 to 72 seconds or more (varies depending on the driving conditions):
  • The difference between the speed of the fastest wheel and the speed of the slowest wheel is 5% or more of the vehicle speed. (If the speed of any wheel is less than 5 km/h (3 mph), a speed difference of up to 15% is allowable.)
  • The vehicle speed is less than 100 km/h (62 mph) and the difference between the speed of the fastest wheel and the speed of the slowest wheel is 5 km/h (3 mph) or more. (If the speed of any wheel is less than 5 km/h (3 mph), a speed difference of up to 16 km/h (10 mph) is allowable.)
  • The vehicle speed is 100 km/h (62 mph) or more and the difference between the speed of the fastest wheel and the speed of the slowest wheel is 6% or more of the vehicle speed. (If the speed of any wheel is less than 5 km/h (3 mph), a speed difference of up to 15% is allowable.)
• Wheel speed sensor signal fluctuation is equivalent to 98 G or more, or alternates between 50 G or more and -50 G or less.
• An abnormal signal is received from a wheel speed sensor.

• Rear speed sensor LH (rear axle hub and bearing assembly LH)
• Speed sensor circuit
• Skid control sensor wire LH (No. 2 parking brake wire assembly)
• Rear speed sensor rotor LH (rear axle hub and bearing assembly LH)
• Rear speed sensor installation
• Skid control ECU (brake actuator assembly)

Diagnosis Condition

The vehicle speed is more than 50.4 km/h (31 mph).

○

-

-

-

After the initial start or restart and when the vehicle speed has reached 12 km/h (7 mph).

-

○

-

-

After the initial start or restart and when the vehicle speed has reached 20 km/h (12 mph).

-

-

○

-

Malfunction Status

Pulses are not detected.

○

-

-

-

A wheel speed of 0 km/h (0 mph) is detected.

-

○

-

-

A front wheel speed of 0 km/h (0 mph) is detected.

-

-

○

-

The difference between the speed of the fastest wheel and the speed of the slowest wheel is 5% or more of the vehicle speed. (If the speed of any wheel is less than 5 km/h (3 mph), a speed difference of up to 15% is allowable.)

-

-

-

○

Detection Time

0.4 seconds

-

-

9 to 72 seconds or more (varies depending on the driving conditions)

Number of Trips

1 trip

1 trip

1 trip

1 trip

Diagnosis Condition

The vehicle speed is less than 100 km/h (62 mph).

○

-

-

-

The vehicle speed is 100 km/h (62 mph) or more.

-

○

-

-

Malfunction Status

The difference between the speed of the fastest wheel and the speed of the slowest wheel is 5 km/h (3 mph) or more. (If the speed of any wheel is less than 5 km/h (3 mph), a speed difference of up to 16 km/h (10 mph) is allowable.)

○

-

-

-

The difference between the speed of the fastest wheel and the speed of the slowest wheel is 6% or more of the vehicle speed. (If the speed of any wheel is less than 5 km/h (3 mph), a speed difference of up to 15% is allowable.)

-

○

-

-

Wheel speed sensor signal fluctuation is equivalent to 98 G or more, or alternates between 50 G or more and -50 G or less.

-

-

○

-

An abnormal signal is received from a wheel speed sensor.

-

-

-

○

Detection Time

9 to 72 seconds or more (varies depending on the driving conditions)

9 to 72 seconds or more (varies depending on the driving conditions)

-

-

Number of Trips

1 trip

1 trip

1 trip

1 trip

Diagnosis Condition

The vehicle speed is more than 50.4 km/h (31 mph).

○

-

-

-

After the initial start or restart and when the vehicle speed has reached 12 km/h (7 mph).

-

○

-

-

After the initial start or restart and when the vehicle speed has reached 20 km/h (12 mph).

-

-

○

-

Malfunction Status

Pulses are not detected.

○

-

-

-

A wheel speed of 0 km/h (0 mph) is detected.

-

○

-

-

A front wheel speed of 0 km/h (0 mph) is detected.

-

-

○

-

The difference between the speed of the fastest wheel and the speed of the slowest wheel is 5% or more of the vehicle speed. (If the speed of any wheel is less than 5 km/h (3 mph), a speed difference of up to 15% is allowable.)

-

-

-

○

Detection Time

0.4 seconds

-

-

9 to 72 seconds or more (varies depending on the driving conditions)

Number of Trips

1 trip

1 trip

1 trip

1 trip

Diagnosis Condition

The vehicle speed is less than 100 km/h (62 mph).

○

-

-

-

The vehicle speed is 100 km/h (62 mph) or more.

-

○

-

-

Malfunction Status

The difference between the speed of the fastest wheel and the speed of the slowest wheel is 5 km/h (3 mph) or more. (If the speed of any wheel is less than 5 km/h (3 mph), a speed difference of up to 16 km/h (10 mph) is allowable.)

○

-

-

-

The difference between the speed of the fastest wheel and the speed of the slowest wheel is 6% or more of the vehicle speed. (If the speed of any wheel is less than 5 km/h (3 mph), a speed difference of up to 15% is allowable.)

-

○

-

-

Wheel speed sensor signal fluctuation is equivalent to 98 G or more, or alternates between 50 G or more and -50 G or less.

-

-

○

-

An abnormal signal is received from a wheel speed sensor.

-

-

-

○

Detection Time

9 to 72 seconds or more (varies depending on the driving conditions)

9 to 72 seconds or more (varies depending on the driving conditions)

-

-

Number of Trips

1 trip

1 trip

1 trip

1 trip

Diagnosis Condition

The vehicle speed is more than 50.4 km/h (31 mph).

○

-

-

-

After the initial start or restart and when the vehicle speed has reached 12 km/h (7 mph).

-

○

-

-

After the initial start or restart and when the vehicle speed has reached 20 km/h (12 mph).

-

-

○

-

Malfunction Status

Pulses are not detected.

○

-

-

-

A wheel speed of 0 km/h (0 mph) is detected.

-

○

-

-

A rear wheel speed of 0 km/h (0 mph) is detected.

-

-

○

-

The difference between the speed of the fastest wheel and the speed of the slowest wheel is 5% or more of the vehicle speed. (If the speed of any wheel is less than 5 km/h (3 mph), a speed difference of up to 15% is allowable.)

-

-

-

○

Detection Time

0.4 seconds

-

-

9 to 72 seconds or more (varies depending on the driving conditions)

Number of Trips

1 trip

1 trip

1 trip

1 trip

Diagnosis Condition

The vehicle speed is less than 100 km/h (62 mph).

○

-

-

-

The vehicle speed is 100 km/h (62 mph) or more.

-

○

-

-

Malfunction Status

The difference between the speed of the fastest wheel and the speed of the slowest wheel is 5 km/h (3 mph) or more. (If the speed of any wheel is less than 5 km/h (3 mph), a speed difference of up to 16 km/h (10 mph) is allowable.)

○

-

-

-

The difference between the speed of the fastest wheel and the speed of the slowest wheel is 6% or more of the vehicle speed. (If the speed of any wheel is less than 5 km/h (3 mph), a speed difference of up to 15% is allowable.)

-

○

-

-

Wheel speed sensor signal fluctuation is equivalent to 98 G or more, or alternates between 50 G or more and -50 G or less.

-

-

○

-

An abnormal signal is received from a wheel speed sensor.

-

-

-

○

Detection Time

9 to 72 seconds or more (varies depending on the driving conditions)

9 to 72 seconds or more (varies depending on the driving conditions)

-

-

Number of Trips

1 trip

1 trip

1 trip

1 trip

Diagnosis Condition

The vehicle speed is more than 50.4 km/h (31 mph).

○

-

-

-

After the initial start or restart and when the vehicle speed has reached 12 km/h (7 mph).

-

○

-

-

After the initial start or restart and when the vehicle speed has reached 20 km/h (12 mph).

-

-

○

-

Malfunction Status

Pulses are not detected.

○

-

-

-

A wheel speed of 0 km/h (0 mph) is detected.

-

○

-

-

A rear wheel speed of 0 km/h (0 mph) is detected.

-

-

○

-

The difference between the speed of the fastest wheel and the speed of the slowest wheel is 5% or more of the vehicle speed. (If the speed of any wheel is less than 5 km/h (3 mph), a speed difference of up to 15% is allowable.)

-

-

-

○

Detection Time

0.4 seconds

-

-

9 to 72 seconds or more (varies depending on the driving conditions)

Number of Trips

1 trip

1 trip

1 trip

1 trip

Diagnosis Condition

The vehicle speed is less than 100 km/h (62 mph).

○

-

-

-

The vehicle speed is 100 km/h (62 mph) or more.

-

○

-

-

Malfunction Status

The difference between the speed of the fastest wheel and the speed of the slowest wheel is 5 km/h (3 mph) or more. (If the speed of any wheel is less than 5 km/h (3 mph), a speed difference of up to 16 km/h (10 mph) is allowable.)

○

-

-

-

The difference between the speed of the fastest wheel and the speed of the slowest wheel is 6% or more of the vehicle speed. (If the speed of any wheel is less than 5 km/h (3 mph), a speed difference of up to 15% is allowable.)

-

○

-

-

Wheel speed sensor signal fluctuation is equivalent to 98 G or more, or alternates between 50 G or more and -50 G or less.

-

-

○

-

An abnormal signal is received from a wheel speed sensor.

-

-

-

○

Detection Time

9 to 72 seconds or more (varies depending on the driving conditions)

9 to 72 seconds or more (varies depending on the driving conditions)

-

-

Number of Trips

1 trip

1 trip

1 trip

1 trip

1.

RECONFIRM DTC

C1330 or C1464 is output

A

C1331 or C1465 is output

B

C1332 or C1466 is output

C

C1333 or C1467 is output

D

GO TO STEP 16

GO TO STEP 30

GO TO STEP 41

2.

CHECK FRONT SPEED SENSOR RH INSTALLATION

(a) Turn the engine switch off.

REINSTALL OR REPLACE FRONT SPEED SENSOR RH

3.

CHECK FRONT SPEED SENSOR RH (CHECK FOR FOREIGN MATTER)

OK (w/o AVS)

A

OK (w/ AVS)

B

NG

C

GO TO STEP 9

CLEAN OR REPLACE FRONT SPEED SENSOR RH

4.

INSPECT BRAKE ACTUATOR ASSEMBLY (POWER SOURCE CIRCUIT)

(a) Make sure that there is no looseness at the locking part and the connecting part of the connectors.

OK:

The connector is securely connected.

A59-1 (FR+) - Body ground

Engine switch on (IG)

11 to 14 V

GO TO STEP 8

5.

INSPECT BRAKE ACTUATOR ASSEMBLY (GROUND CIRCUIT)

(a) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

GO TO STEP 7

6.

CHECK FRONT SPEED SENSOR ROTOR RH (CHECK FOR FOREIGN MATTER)

OK

A

NG (The front speed sensor rotor RH is damaged.)

B

NG (There is foreign matter on the front speed sensor rotor RH.)

C

REPLACE FRONT SPEED SENSOR RH

REPLACE FRONT AXLE HUB SUB-ASSEMBLY RH

CLEAN FRONT SPEED SENSOR ROTOR RH

7.

CHECK HARNESS AND CONNECTOR (BRAKE ACTUATOR ASSEMBLY - FRONT SPEED SENSOR RH)

A28-26 (FR-) - A59-2 (FR-)

Always

Below 1 Ω

A28-26 (FR-) or A59-2 (FR-) - Body ground

Always

10 kΩ or higher

REPLACE BRAKE ACTUATOR ASSEMBLY

REPAIR OR REPLACE HARNESS OR CONNECTOR

8.

CHECK HARNESS AND CONNECTOR (BRAKE ACTUATOR ASSEMBLY - FRONT SPEED SENSOR RH)

A28-21 (FR+) - A59-1 (FR+)

Always

Below 1 Ω

A28-21 (FR+) or A59-1 (FR+) - Body ground

Always

10 kΩ or higher

REPLACE BRAKE ACTUATOR ASSEMBLY

REPAIR OR REPLACE HARNESS OR CONNECTOR

9.

INSPECT BRAKE ACTUATOR ASSEMBLY (POWER SOURCE CIRCUIT)

(a) Make sure that there is no looseness at the locking part and the connecting part of the connectors.

OK:

The connector is securely connected.

z16-1 (FR+) - Body ground

Engine switch on (IG)

11 to 14 V

GO TO STEP 14

10.

INSPECT BRAKE ACTUATOR ASSEMBLY (GROUND CIRCUIT)

(a) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

GO TO STEP 12

11.

CHECK FRONT SPEED SENSOR ROTOR RH (CHECK FOR FOREIGN MATTER)

OK

A

NG (The front speed sensor rotor RH is damaged.)

B

NG (There is foreign matter on the front speed sensor rotor RH.)

C

REPLACE FRONT SPEED SENSOR RH

REPLACE FRONT AXLE HUB SUB-ASSEMBLY RH

CLEAN FRONT SPEED SENSOR ROTOR RH

12.

INSPECT FRONT SKID CONTROL SENSOR WIRE RH

(a) Turn the engine switch off.

z16-2 (FR-) - A58-5 (FR-)

Always

Below 1 Ω

z16-2 (FR-) or A58-5 (FR-) - Body ground and other terminals

Always

10 kΩ or higher

REPLACE FRONT SKID CONTROL SENSOR WIRE RH

13.

CHECK HARNESS AND CONNECTOR (BRAKE ACTUATOR ASSEMBLY - FRONT SKID CONTROL SENSOR WIRE RH)

A28-26 (FR-) - A58-5 (FR-)

Always

Below 1 Ω

A28-26 (FR-) or A58-5 (FR-) - Body ground

Always

10 kΩ or higher

REPLACE BRAKE ACTUATOR ASSEMBLY

REPAIR OR REPLACE HARNESS OR CONNECTOR

14.

INSPECT FRONT SKID CONTROL SENSOR WIRE RH

(a) Turn the engine switch off.

z16-1 (FR+) - A58-6 (FR+)

Always

Below 1 Ω

z16-1 (FR+) or A58-6 (FR+) - Body ground and other terminals

Always

10 kΩ or higher

REPLACE FRONT SKID CONTROL SENSOR WIRE RH

15.

CHECK HARNESS AND CONNECTOR (BRAKE ACTUATOR ASSEMBLY - FRONT SKID CONTROL SENSOR WIRE RH)

A28-21 (FR+) - A58-6 (FR+)

Always

Below 1 Ω

A28-21 (FR+) or A58-6 (FR+) - Body ground

Always

10 kΩ or higher

REPLACE BRAKE ACTUATOR ASSEMBLY

REPAIR OR REPLACE HARNESS OR CONNECTOR

16.

CHECK FRONT SPEED SENSOR LH INSTALLATION

(a) Turn the engine switch off.

REINSTALL OR REPLACE FRONT SPEED SENSOR LH

17.

CHECK FRONT SPEED SENSOR LH (CHECK FOR FOREIGN MATTER)

OK (w/o AVS)

A

OK (w/ AVS)

B

NG

C

GO TO STEP 23

CLEAN OR REPLACE FRONT SPEED SENSOR LH

18.

INSPECT BRAKE ACTUATOR ASSEMBLY (POWER SOURCE CIRCUIT)

(a) Make sure that there is no looseness at the locking part and the connecting part of the connectors.

OK:

The connector is securely connected.

A61-1 (FL+) - Body ground

Engine switch on (IG)

11 to 14 V

GO TO STEP 22

19.

INSPECT BRAKE ACTUATOR ASSEMBLY (GROUND CIRCUIT)

(a) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

GO TO STEP 21

20.

CHECK FRONT SPEED SENSOR ROTOR LH (CHECK FOR FOREIGN MATTER)

OK

A

NG (The front speed sensor rotor LH is damaged.)

B

NG (There is foreign matter on the front speed sensor rotor LH.)

C

REPLACE FRONT SPEED SENSOR LH

REPLACE FRONT AXLE HUB SUB-ASSEMBLY LH

CLEAN FRONT SPEED SENSOR ROTOR LH

21.

CHECK HARNESS AND CONNECTOR (BRAKE ACTUATOR ASSEMBLY - FRONT SPEED SENSOR LH)

A28-7 (FL-) - A61-2 (FL-)

Always

Below 1 Ω

A28-7 (FL-) or A61-2 (FL-) - Body ground

Always

10 kΩ or higher

REPLACE BRAKE ACTUATOR ASSEMBLY

REPAIR OR REPLACE HARNESS OR CONNECTOR

22.

CHECK HARNESS AND CONNECTOR (BRAKE ACTUATOR ASSEMBLY - FRONT SPEED SENSOR LH)

A28-24 (FL+) - A61-1 (FL+)

Always

Below 1 Ω

A28-24 (FL+) or A61-1 (FL+) - Body ground

Always

10 kΩ or higher

REPLACE BRAKE ACTUATOR ASSEMBLY

REPAIR OR REPLACE HARNESS OR CONNECTOR

23.

INSPECT BRAKE ACTUATOR ASSEMBLY (POWER SOURCE CIRCUIT)

(a) Make sure that there is no looseness at the locking part and the connecting part of the connectors.

OK:

The connector is securely connected.

z15-1 (FL+) - Body ground

Engine switch on (IG)

11 to 14 V

GO TO STEP 28

24.

INSPECT BRAKE ACTUATOR ASSEMBLY (GROUND CIRCUIT)

(a) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

GO TO STEP 26

25.

CHECK FRONT SPEED SENSOR ROTOR LH (CHECK FOR FOREIGN MATTER)

OK

A

NG (The front speed sensor rotor LH is damaged.)

B

NG (There is foreign matter on the front speed sensor rotor LH.)

C

REPLACE FRONT SPEED SENSOR LH

REPLACE FRONT AXLE HUB SUB-ASSEMBLY LH

CLEAN FRONT SPEED SENSOR ROTOR LH

26.

INSPECT FRONT SKID CONTROL SENSOR WIRE LH

(a) Turn the engine switch off.

z15-2 (FL-) - A60-5 (FL-)

Always

Below 1 Ω

z15-2 (FL-) or A60-5 (FL-) - Body ground and other terminals

Always

10 kΩ or higher

REPLACE FRONT SKID CONTROL SENSOR WIRE LH

27.

CHECK HARNESS AND CONNECTOR (BRAKE ACTUATOR ASSEMBLY - FRONT SKID CONTROL SENSOR WIRE LH)

A28-7 (FL-) - A60-5 (FL-)

Always

Below 1 Ω

A28-7 (FL-) or A60-5 (FL-) - Body ground

Always

10 kΩ or higher

REPLACE BRAKE ACTUATOR ASSEMBLY

REPAIR OR REPLACE HARNESS OR CONNECTOR

28.

INSPECT FRONT SKID CONTROL SENSOR WIRE LH

(a) Turn the engine switch off.

z15-1 (FL+) - A60-6 (FL+)

Always

Below 1 Ω

z15-1 (FL+) or A60-6 (FL+) - Body ground and other terminals

Always

10 kΩ or higher

REPLACE FRONT SKID CONTROL SENSOR WIRE LH

29.

CHECK HARNESS AND CONNECTOR (BRAKE ACTUATOR ASSEMBLY - FRONT SKID CONTROL SENSOR WIRE LH)

A28-24 (FL+) - A60-6 (FL+)

Always

Below 1 Ω

A28-24 (FL+) or A60-6 (FL+) - Body ground

Always

10 kΩ or higher

REPLACE BRAKE ACTUATOR ASSEMBLY

REPAIR OR REPLACE HARNESS OR CONNECTOR

30.

CHECK REAR SPEED SENSOR RH INSTALLATION

(a) Turn the engine switch off.

REPLACE REAR AXLE HUB AND BEARING ASSEMBLY RH

31.

INSPECT BRAKE ACTUATOR ASSEMBLY (POWER SOURCE CIRCUIT)

(a) Make sure that there is no looseness at the locking part and the connecting part of the connectors.

OK:

The connector is securely connected.

Y5-2 (RA+) - Body ground

Engine switch on (IG)

11 to 14 V

OK

A

NG (w/o AVS)

B

NG (w/ AVS)

C

GO TO STEP 37

GO TO STEP 39

32.

INSPECT BRAKE ACTUATOR ASSEMBLY (GROUND CIRCUIT)

(a) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

OK

A

NG (w/o AVS)

B

NG (w/ AVS)

C

REPLACE REAR AXLE HUB AND BEARING ASSEMBLY RH

GO TO STEP 35

33.

INSPECT NO. 1 PARKING BRAKE WIRE ASSEMBLY

(a) Turn the engine switch off.

Y5-1 (RA-) - YK5-2 (RR-)

Always

Below 1 Ω

Y5-1 (RA-) or YK5-2 (RR-) - Body ground and other terminals

Always

10 kΩ or higher

REPLACE NO. 1 PARKING BRAKE WIRE ASSEMBLY

34.

CHECK HARNESS AND CONNECTOR (BRAKE ACTUATOR ASSEMBLY - NO. 1 PARKING BRAKE WIRE ASSEMBLY)

A28-37 (RR-) - YK5-2 (RR-)

Always

Below 1 Ω

A28-37 (RR-) or YK5-2 (RR-) - Body ground

Always

10 kΩ or higher

REPLACE BRAKE ACTUATOR ASSEMBLY

REPAIR OR REPLACE HARNESS OR CONNECTOR

35.

INSPECT NO. 1 PARKING BRAKE WIRE ASSEMBLY

(a) Turn the engine switch off.

Y5-1 (RA-) - YK3-2 (RR-)

Always

Below 1 Ω

Y5-1 (RA-) or YK3-2 (RR-) - Body ground and other terminals

Always

10 kΩ or higher

REPLACE NO. 1 PARKING BRAKE WIRE ASSEMBLY

36.

CHECK HARNESS AND CONNECTOR (BRAKE ACTUATOR ASSEMBLY - NO. 1 PARKING BRAKE WIRE ASSEMBLY)

A28-37 (RR-) - YK3-2 (RR-)

Always

Below 1 Ω

A28-37 (RR-) or YK3-2 (RR-) - Body ground

Always

10 kΩ or higher

REPLACE BRAKE ACTUATOR ASSEMBLY

REPAIR OR REPLACE HARNESS OR CONNECTOR

37.

INSPECT NO. 1 PARKING BRAKE WIRE ASSEMBLY

(a) Turn the engine switch off.

Y5-2 (RA+) - YK5-1 (RR+)

Always

Below 1 Ω

Y5-2 (RA+) or YK5-1 (RR+) - Body ground and other terminals

Always

10 kΩ or higher

REPLACE NO. 1 PARKING BRAKE WIRE ASSEMBLY

38.

CHECK HARNESS AND CONNECTOR (BRAKE ACTUATOR ASSEMBLY - NO. 1 PARKING BRAKE WIRE ASSEMBLY)

A28-22 (RR+) - YK5-1 (RR+)

Always

Below 1 Ω

A28-22 (RR+) or YK5-1 (RR+) - Body ground

Always

10 kΩ or higher

REPLACE BRAKE ACTUATOR ASSEMBLY

REPAIR OR REPLACE HARNESS OR CONNECTOR

39.

INSPECT NO. 1 PARKING BRAKE WIRE ASSEMBLY

(a) Turn the engine switch off.

Y5-2 (RA+) - YK3-1 (RR+)

Always

Below 1 Ω

Y5-2 (RA+) or YK3-1 (RR+) - Body ground and other terminals

Always

10 kΩ or higher

REPLACE NO. 1 PARKING BRAKE WIRE ASSEMBLY

40.

CHECK HARNESS AND CONNECTOR (BRAKE ACTUATOR ASSEMBLY - NO. 1 PARKING BRAKE WIRE ASSEMBLY)

A28-22 (RR+) - YK3-1 (RR+)

Always

Below 1 Ω

A28-22 (RR+) or YK3-1 (RR+) - Body ground

Always

10 kΩ or higher

REPLACE BRAKE ACTUATOR ASSEMBLY

REPAIR OR REPLACE HARNESS OR CONNECTOR

41.

CHECK REAR SPEED SENSOR LH INSTALLATION

(a) Turn the engine switch off.

REPLACE REAR AXLE HUB AND BEARING ASSEMBLY LH

42.

INSPECT BRAKE ACTUATOR ASSEMBLY (POWER SOURCE CIRCUIT)

(a) Make sure that there is no looseness at the locking part and the connecting part of the connectors.

OK:

The connector is securely connected.

Y2-2 (LA+) - Body ground

Engine switch on (IG)

11 to 14 V

OK

A

NG (w/o AVS)

B

NG (w/ AVS)

C

GO TO STEP 48

GO TO STEP 50

43.

INSPECT BRAKE ACTUATOR ASSEMBLY (GROUND CIRCUIT)

(a) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

OK

A

NG (w/o AVS)

B

NG (w/ AVS)

C

REPLACE REAR AXLE HUB AND BEARING ASSEMBLY LH

GO TO STEP 46

44.

INSPECT NO. 2 PARKING BRAKE WIRE ASSEMBLY

(a) Turn the engine switch off.

Y2-1 (LA-) - YK6-2 (RL-)

Always

Below 1 Ω

Y2-1 (LA-) or YK6-2 (RL-) - Body ground and other terminals

Always

10 kΩ or higher

REPLACE NO. 2 PARKING BRAKE WIRE ASSEMBLY

45.

CHECK HARNESS AND CONNECTOR (BRAKE ACTUATOR ASSEMBLY - NO. 2 PARKING BRAKE WIRE ASSEMBLY)

A28-23 (RL-) - YK6-2 (RL-)

Always

Below 1 Ω

A28-23 (RL-) or YK6-2 (RL-) - Body ground

Always

10 kΩ or higher

REPLACE BRAKE ACTUATOR ASSEMBLY

REPAIR OR REPLACE HARNESS OR CONNECTOR

46.

INSPECT NO. 2 PARKING BRAKE WIRE ASSEMBLY

(a) Turn the engine switch off.

Y2-1 (LA-) - YK4-2 (RL-)

Always

Below 1 Ω

Y2-1 (LA-) or YK4-2 (RL-) - Body ground and other terminals

Always

10 kΩ or higher

REPLACE NO. 2 PARKING BRAKE WIRE ASSEMBLY

47.

CHECK HARNESS AND CONNECTOR (BRAKE ACTUATOR ASSEMBLY - NO. 2 PARKING BRAKE WIRE ASSEMBLY)

A28-23 (RL-) - YK4-2 (RL-)

Always

Below 1 Ω

A28-23 (RL-) or YK4-2 (RL-) - Body ground

Always

10 kΩ or higher

REPLACE BRAKE ACTUATOR ASSEMBLY

REPAIR OR REPLACE HARNESS OR CONNECTOR

48.

INSPECT NO. 2 PARKING BRAKE WIRE ASSEMBLY

(a) Turn the engine switch off.

Y2-2 (LA+) - YK6-1 (RL+)

Always

Below 1 Ω

Y2-2 (LA+) or YK6-1 (RL+) - Body ground and other terminals

Always

10 kΩ or higher

REPLACE NO. 2 PARKING BRAKE WIRE ASSEMBLY

49.

CHECK HARNESS AND CONNECTOR (BRAKE ACTUATOR ASSEMBLY - NO. 2 PARKING BRAKE WIRE ASSEMBLY)

A28-39 (RL+) - YK6-1 (RL+)

Always

Below 1 Ω

A28-39 (RL+) or YK6-1 (RL+) - Body ground

Always

10 kΩ or higher

REPLACE BRAKE ACTUATOR ASSEMBLY

REPAIR OR REPLACE HARNESS OR CONNECTOR

50.

INSPECT NO. 2 PARKING BRAKE WIRE ASSEMBLY

(a) Turn the engine switch off.

Y2-2 (LA+) - YK4-1 (RL+)

Always

Below 1 Ω

Y2-2 (LA+) or YK4-1 (RL+) - Body ground and other terminals

Always

10 kΩ or higher

REPLACE NO. 2 PARKING BRAKE WIRE ASSEMBLY

51.

CHECK HARNESS AND CONNECTOR (BRAKE ACTUATOR ASSEMBLY - NO. 2 PARKING BRAKE WIRE ASSEMBLY)

A28-39 (RL+) - YK4-1 (RL+)

Always

Below 1 Ω

A28-39 (RL+) or YK4-1 (RL+) - Body ground

Always

10 kΩ or higher

REPLACE BRAKE ACTUATOR ASSEMBLY

REPAIR OR REPLACE HARNESS OR CONNECTOR