Last Modified: 11-20-2023 6.11:8.1.0 Doc ID: RM1000000014VMZ
Model Year Start: 2018 Model: Camry HV Prod Date Range: [07/2017 - 09/2018]
Title: BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM: C1403,C1404; Malfunction in Rear Speed Sensor RH Circuit; 2018 MY Camry HV [07/2017 - 09/2018]

DTC

C1403

Malfunction in Rear Speed Sensor RH Circuit

DTC

C1404

Malfunction in Rear Speed Sensor LH Circuit

DESCRIPTION

Refer to DTCs C1415 and C1416.

Click here 2018 MY Camry HV [07/2017 - 09/2018]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM: C1415,C1416; Rear Speed Sensor RH Circuit Output

DTC No.

Detection Item

INF Code

DTC Detection Condition

Trouble Area

Note

C1403

Malfunction in Rear Speed Sensor RH Circuit

521

522

527
  • INF Code: 521
    • At a vehicle speed of 10 km/h (6 mph) or more, output voltage from one of the speed sensors is less than that from the other sensors for 15 seconds or more.
  • INF Code: 522
    • At a vehicle speed of 10 km/h (6 mph) or more, outputs from both speed sensors are 0 km/h (0 mph) for 15 seconds or more. (except when both rear speed sensors are 0 km/h (0 mph)).
  • INF Code: 527
    • At a vehicle speed of 10 km/h (6 mph) or more, output from one of the speed sensors is 0 km/h (0 mph) for 1 second or more.
  • Rear speed sensor RH (rear axle hub and bearing assembly RH)
  • Speed sensor installed improperly
  • Rear speed sensor rotor RH (rear axle hub and bearing assembly RH)

ABS DTC

C1404

Malfunction in Rear Speed Sensor LH Circuit

531

532

537
  • INF Code: 531
    • At a vehicle speed of 10 km/h (6 mph) or more, output voltage from one of the speed sensors is less than that from the other sensors for 15 seconds or more.
  • INF Code: 532
    • At a vehicle speed of 10 km/h (6 mph) or more, outputs from both speed sensors are 0 km/h (0 mph) for 15 seconds or more. (except when both rear speed sensors are 0 km/h (0 mph)).
  • INF Code: 537
    • At a vehicle speed of 10 km/h (6 mph) or more, output from one of the speed sensors is 0 km/h (0 mph) for 1 second or more.
  • Rear speed sensor LH (rear axle hub and bearing assembly LH)
  • Speed sensor installed improperly
  • Rear speed sensor rotor LH (rear axle hub and bearing assembly LH)

ABS DTC

WIRING DIAGRAM

Refer to DTCs C1415 and C1416.

Click here 2018 MY Camry HV [07/2017 - 09/2018]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM: C1415,C1416; Rear Speed Sensor RH Circuit Output

PROCEDURE

1.

CHECK DTC

(a) Clear the DTCs.

Chassis > ABS/VSC/TRAC > Clear DTCs

(b) Turn the power switch off.

(c) Turn the power switch on (IG).

(d) Check if the same DTC is output.

Chassis > ABS/VSC/TRAC > Trouble Codes

Result

Proceed to

DTC C1403 is output.

A

DTC C1404 is output.

B
B

GO TO STEP 6

A

2.

CHECK REAR SPEED SENSOR RH INSTALLATION

(a) Check the rear speed sensor RH installation.

OK:

There is no clearance between the sensor and the rear axle hub.

HINT:

Because the rear axle hub and bearing assembly RH cannot be disassembled, if the rear speed sensor RH needs replacement, replace the rear axle hub and bearing assembly RH.

*1

Rear Speed Sensor RH

*a

OK

*b

NG

*c

No Clearance
NG

REPLACE REAR AXLE HUB AND BEARING ASSEMBLY RH

OK

3.

READ VALUE USING TECHSTREAM (REAR SPEED SENSOR RH)

(a) Select the Data List on the Techstream.

Chassis > ABS/VSC/TRAC > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

RR Wheel Speed

Rear speed sensor RH

Min.: 0 km/h (0 mph), Max.: 326.4 km/h (203 mph)

Vehicle stopped: 0 km/h (0 mph)

When driving at constant speed: No large fluctuations

Chassis > ABS/VSC/TRAC > Data List

Tester Display

RR Wheel Speed

(b) Check the rear speed sensor RH output value.

OK:

The output value changes in accordance with the vehicle speed.

OK

USE SIMULATION METHOD TO CHECK

NG

4.

INSPECT NO. 1 PARKING BRAKE WIRE ASSEMBLY

(a) Turn the power switch off.

*a

Front view of skid control sensor wire RH (NO. 1 parking brake wire assembly)

*b

Front view of wire harness connector

(to Sensor Side Connector)

*c

Front view of wire harness connector

(to Vehicle Side Connector)

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

OK:

The connector is securely connected.

(c) Remove the skid control sensor wire RH (NO. 1 parking brake wire assembly).

(d) Check both the connector case and the terminals for deformation and corrosion.

OK:

No deformation or corrosion.

(e) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection

Condition

Specified Condition

u2-2 (RA+) - uR1-1 (RR+)

Always

Below 1 Ω

u2-2 (RA+) - uR1-2 (RR-)

Always

10 kΩ or higher

u2-2 (RA+) or uR1-1 (RR+) - Body ground

Always

10 kΩ or higher

u2-1 (RA-) - uR1-2 (RR-)

Always

Below 1 Ω

u2-1 (RA-) - uR1-1 (RR+)

Always

10 kΩ or higher

u2-1 (RA-) or uR1-2 (RR-) - Body ground

Always

10 kΩ or higher
NG

REPLACE NO. 1 PARKING BRAKE WIRE ASSEMBLY
OK

5.

CHECK HARNESS AND CONNECTOR (BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY - NO. 1 PARKING BRAKE WIRE ASSEMBLY)

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

OK:

The connector is securely connected.

(b) Disconnect the A40 skid control ECU (brake booster with master cylinder assembly) connector.

(c) Check both the connector case and the terminals for deformation and corrosion.

OK:

No deformation or corrosion.

(d) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection

Condition

Specified Condition

A40-7 (RR+) - uR1-1 (RR+)

Always

Below 1 Ω

A40-7 (RR+) or uR1-1 (RR+) - Body ground

Always

10 kΩ or higher

A40-8 (RR-) - uR1-2 (RR-)

Always

Below 1 Ω

A40-8 (RR-) or uR1-2 (RR-) - Body ground

Always

10 kΩ or higher

NOTICE:

Check the rear speed sensor RH signal after replacement.

Click here 2018 MY Camry HV [07/2017 - 09/2018]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM: TEST MODE PROCEDURE

HINT:

The rear speed sensor RH and rear speed sensor rotor RH are incorporated into the rear axle hub and bearing assembly RH.

If the rear speed sensor RH and rear speed sensor rotor RH need to be replaced, replace the rear axle hub and bearing assembly RH.

OK

REPLACE REAR AXLE HUB AND BEARING ASSEMBLY RH

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

6.

CHECK REAR SPEED SENSOR LH INSTALLATION

(a) Check the rear speed sensor LH installation.

OK:

There is no clearance between the sensor and the rear axle hub.

HINT:

Because the rear axle hub and bearing assembly LH cannot be disassembled, if the rear speed sensor LH needs replacement, replace the rear axle hub and bearing assembly LH.

*1

Rear Speed Sensor LH

*a

OK

*b

NG

*c

No Clearance
NG

REPLACE REAR AXLE HUB AND BEARING ASSEMBLY LH

OK

7.

READ VALUE USING TECHSTREAM (REAR SPEED SENSOR LH)

(a) Select the Data List on the Techstream.

Chassis > ABS/VSC/TRAC > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

RL Wheel Speed

Rear speed sensor LH

Min.: 0 km/h (0 mph), Max.: 326.4 km/h (203 mph)

Vehicle stopped: 0 km/h (0 mph)

When driving at constant speed: No large fluctuations

Chassis > ABS/VSC/TRAC > Data List

Tester Display

RL Wheel Speed

(b) Check the rear speed sensor LH output value.

OK:

The output value changes in accordance with the vehicle speed.

OK

USE SIMULATION METHOD TO CHECK

NG

8.

INSPECT NO. 2 PARKING BRAKE WIRE ASSEMBLY

(a) Turn the power switch off.

*a

Front view of skid control sensor wire LH (NO. 2 parking brake wire assembly)

*b

Front view of wire harness connector

(to Sensor Side Connector)

*c

Front view of wire harness connector

(to Vehicle Side Connector)

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

OK:

The connector is securely connected.

(c) Remove the skid control sensor wire LH (NO. 2 parking brake wire assembly).

(d) Check both the connector case and the terminals for deformation and corrosion.

OK:

No deformation or corrosion.

(e) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection

Condition

Specified Condition

v2-2 (LA+) - vR1-1 (RL+)

Always

Below 1 Ω

v2-2 (LA+) - vR1-2 (RL-)

Always

10 kΩ or higher

v2-2 (LA+) or vR1-1 (RL+) - Body ground

Always

10 kΩ or higher

v2-1 (LA-) - vR1-2 (RL-)

Always

Below 1 Ω

v2-1 (LA-) - vR1-1 (RL+)

Always

10 kΩ or higher

v2-1 (LA-) or vR1-2 (RL-) - Body ground

Always

10 kΩ or higher
NG

REPLACE NO. 2 PARKING BRAKE WIRE ASSEMBLY
OK

9.

CHECK HARNESS AND CONNECTOR (BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY - NO. 2 PARKING BRAKE WIRE ASSEMBLY)

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

OK:

The connector is securely connected.

(b) Disconnect the A40 skid control ECU (brake booster with master cylinder assembly) connector.

(c) Check both the connector case and the terminals for deformation and corrosion.

OK:

No deformation or corrosion.

(d) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection

Condition

Specified Condition

A40-34 (RL+) - vR1-1 (RL+)

Always

Below 1 Ω

A40-34 (RL+) or vR1-1 (RL+) - Body ground

Always

10 kΩ or higher

A40-35 (RL-) - vR1-2 (RL-)

Always

Below 1 Ω

A40-35 (RL-) or vR1-2 (RL-) - Body ground

Always

10 kΩ or higher

NOTICE:

Check the rear speed sensor LH signal after replacement.

Click here 2018 MY Camry HV [07/2017 - 09/2018]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM: TEST MODE PROCEDURE

HINT:

The rear speed sensor LH and rear speed sensor rotor LH are incorporated into the rear axle hub and bearing assembly LH.

If the rear speed sensor LH and rear speed sensor rotor LH need to be replaced, replace the rear axle hub and bearing assembly LH.

OK

REPLACE REAR AXLE HUB AND BEARING ASSEMBLY LH

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR