Brake Control Dynamic Control Systems. Dtc C1235/35 Foreign Object Is Attached On Tip Of Front Speed Sensor Rh

Brake. Corolla. Zre142 Aze141

Brake Control Dynamic Control Systems. Corolla. Zre142 Aze141

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

INSPECT SPEED SENSOR

CHECK HARNESS AND CONNECTOR (SKID CONTROL SENSOR WIRE)

CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU - SPEED SENSOR)

INSPECT SKID CONTROL ECU (SENSOR INPUT)

RECONFIRM DTC

CHECK FRONT SPEED SENSOR TIP

CHECK FRONT SPEED SENSOR ROTOR

RECONFIRM DTC

REPLACE FRONT SPEED SENSOR

RECONFIRM DTC

REPLACE FRONT SPEED SENSOR ROTOR

RECONFIRM DTC

REPLACE REAR SPEED SENSOR AND REAR SPEED SENSOR ROTOR

RECONFIRM DTC

DTC C1235/35 Foreign Object is Attached on Tip of Front Speed Sensor RH

DTC C1236/36 Foreign Object is Attached on Tip of Front Speed Sensor LH

DTC C1238/38 Foreign Object is Attached on Tip of Rear Speed Sensor RH

DTC C1239/39 Foreign Object is Attached on Tip of Rear Speed Sensor LH

DTC C1275/75 Abnormal Change in Output Signal of Front Speed Sensor RH (Test Mode DTC)

DTC C1276/76 Abnormal Change in Output Signal of Front Speed Sensor LH (Test Mode DTC)

DTC C1277/77 Abnormal Change in Output Signal of Rear Speed Sensor RH (Test Mode DTC)

DTC C1278/78 Abnormal Change in Output Signal of Rear Speed Sensor LH (Test Mode DTC)

DESCRIPTION

The speed sensor detects the wheel speed and sends the appropriate signals to the skid control ECU. These signals are used for the ABS control system.
Speed sensor rotors have 48 serrations (for front) or rows of alternating N and S magnetic poles (for rear). The hall IC type speed sensor use the frequency of output pulses to detect the vehicle speed. Because the sensor outputs digital pulses, it can detect vehicle speeds even when the vehicle is nearly stationary.
When foreign matter or oil adheres to the speed sensor tip or speed sensor rotor, these DTCs are output. An abnormal waveform input from the sensor determines these conditions.
These DTCs may be detected when a malfunction occurs in the connector terminals or wire harness of the speed sensor circuit.
DTCs C1275/75 to C1278/78 will be deleted when the speed sensor sends a vehicle speed signal or when Test Mode ends. DTCs C1275/75 to C1278/78 are output only in Test Mode.

Corolla. Zre142 Aze141.Brake Control Dynamic Control Systems.Anti-Lock Brake System.
Dtc
C1235/35 Foreign Object Is Attached On Tip Of Front Speed Sensor Rh

DTC Code	DTC Detection Condition	Trouble Area
C1235/35 C1236/36 C1238/38 C1239/39	Either of the following is detected: At a vehicle speed of 20 km/h (12 mph) or more, the IG1 terminal voltage is 17.4 V or less, and noise occurs in the sensor signal from the abnormal wheel for 5 seconds or more. At a vehicle speed of 10 km/h (6 mph) or more, the IG1 terminal voltage is 17.4 V or less, and noise is input once per rotor rotation for 15 seconds or more.	Speed sensor Speed sensor rotor Sensor installation Brake actuator assembly (Skid control ECU)
C1275/75 C1276/76 C1277/77 C1278/78	Detected only during Test Mode.	Speed sensor rotor

HINT:

DTCs C1235/35 and C1275/75 are for the front speed sensor RH.
DTCs C1236/36 and C1276/76 are for the front speed sensor LH.
DTCs C1238/38 and C1277/77 are for the rear speed sensor RH.
DTCs C1239/39 and C1278/78 are for the rear speed sensor LH.

WIRING DIAGRAM

INSPECTION PROCEDURE

HINT:

When C0200/31, C0205/32, C0210/33 and/or C0215/34 is output together with C1235/35, C1236/36, C1238/38, or C1239/39, inspect and repair the trouble areas indicated by C0200/31, C0205/32, C0210/33 and/or C0215/34 first (COROLLA_ZRE142 RM000000XI90PBX.html for front, or COROLLA_ZRE142 RM000000XIA0I3X.html for rear).

1.INSPECT SPEED SENSOR

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

Disconnect each speed sensor connector.

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

Standard Resistance:

for RH:

Tester Connection	Condition	Specified Condition
2 (FR+) - Body ground	Always	10 kΩ or higher
1 (FR-) - Body ground	Always	10 kΩ or higher
2 (RR+) - Body ground	Always	10 kΩ or higher
1 (RR-) - Body ground	Always	10 kΩ or higher

for LH:

Tester Connection	Condition	Specified Condition
2 (FL+) - Body ground	Always	10 kΩ or higher
1 (FL-) - Body ground	Always	10 kΩ or higher
2 (RL+) - Body ground	Always	10 kΩ or higher
1 (RL-) - Body ground	Always	10 kΩ or higher

Result:

Result	Proceed to
OK (for rear)	A
OK (for front)	B
NG	C

NOTICE:

Check the speed sensor signal after replacement (COROLLA_ZRE142 RM000001JBD052X.html).

Go to step 3

REPLACE SPEED SENSOR

A

2.CHECK HARNESS AND CONNECTOR (SKID CONTROL SENSOR WIRE)

Disconnect the skid control sensor wire.

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

Standard Resistance:

for RH:

Tester Connection	Condition	Specified Condition
W1 ("A"-2) - W1 ("B"-1)	Always	Below 1 Ω
W1 ("A"-2) - W1 ("B"-2)	Always	10 kΩ or higher
W1 ("A"-2) - Body ground	Always	10 kΩ or higher
W1 ("A"-1) - W1 ("B"-2)	Always	Below 1 Ω
W1 ("A"-1) - W1 ("B"-1)	Always	10 kΩ or higher
W1 ("A"-1) - Body ground	Always	10 kΩ or higher

for LH:

Tester Connection	Condition	Specified Condition
V1 ("A"-2) - V1 ("B"-1)	Always	Below 1 Ω
V1 ("A"-2) - V1 ("B"-2)	Always	10 kΩ or higher
V1 ("A"-2) - Body ground	Always	10 kΩ or higher
V1 ("A"-1) - V1 ("B"-2)	Always	Below 1 Ω
V1 ("A"-1) - V1 ("B"-1)	Always	10 kΩ or higher
V1 ("A"-1) - Body ground	Always	10 kΩ or higher

NOTICE:

Check the speed sensor signal after replacement (COROLLA_ZRE142 RM000001JBD052X.html).

REPLACE SKID CONTROL SENSOR WIRE

OK

3.CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU - SPEED SENSOR)

Reconnect the skid control sensor wire.

Disconnect the skid control ECU connector.

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

Standard Resistance:

for RH:

Tester Connection	Condition	Specified Condition
A51-7 (FR+) - A27-2 (FR+)	Always	Below 1 Ω
A51-7 (FR+) - Body ground	Always	10 kΩ or higher
A51-6 (FR-) - A27-1 (FR-)	Always	Below 1 Ω
A51-6 (FR-) - Body ground	Always	10 kΩ or higher
A51-17 (RR+) - W1-2 (RR+)	Always	Below 1 Ω
A51-17 (RR+) - Body ground	Always	10 kΩ or higher
A51-16 (RR-) - W1-1 (RR-)	Always	Below 1 Ω
A51-16 (RR-) - Body ground	Always	10 kΩ or higher

for LH:

Tester Connection	Condition	Specified Condition
A51-19 (FL+) - A28-2 (FL+)	Always	Below 1 Ω
A51-19 (FL+) - Body ground	Always	10 kΩ or higher
A51-18 (FL-) - A28-1 (FL-)	Always	Below 1 Ω
A51-18 (FL-) - Body ground	Always	10 kΩ or higher
A51-5 (RL+) - V1-2 (RL+)	Always	Below 1 Ω
A51-5 (RL+) - Body ground	Always	10 kΩ or higher
A51-4 (RL-) - V1-1 (RL-)	Always	Below 1 Ω
A51-4 (RL-) - Body ground	Always	10 kΩ or higher

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

4.INSPECT SKID CONTROL ECU (SENSOR INPUT)

Reconnect the skid control ECU connector.

Turn the ignition switch to ON.

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

Standard Voltage:
for RH:
Tester Connection
Switch Condition
Specified Condition
A27-2 (FR+) - Body ground
Ignition switch ON
8 to 14 V
W1-2 (RR+) - Body ground
Ignition switch ON
8 to 14 V
for LH:
Tester Connection
Switch Condition
Specified Condition
A28-2 (FL+) - Body ground
Ignition switch ON
8 to 14 V
V1-2 (RL+) - Body ground
Ignition switch ON
8 to 14 V

REPLACE BRAKE ACTUATOR ASSEMBLY (COROLLA_ZRE142 RM0000013P6022X.html)

OK

5.RECONFIRM DTC

Turn the ignition switch off.

Reconnect the speed sensor connector.

Clear the DTCs (COROLLA_ZRE142 RM000000XHV0F3X.html).

Start the engine.

Drive the vehicle at a speed of 20 km/h (12 mph) or more for at least 60 seconds.

Check if the same DTC is recorded (COROLLA_ZRE142 RM000000XHV0F3X.html).

Result:

Result	Proceed to
DTCs (C1235/35, C1236/36, C1238/38 and/or C1239/39) are output (for front)	A
DTCs (C1235/35, C1236/36, C1238/38 and/or C1239/39) are output (for rear)	B
DTCs (C1235/35, C1236/36, C1238/38 and C1239/39) are not output	C

Go to step 13

CHECK FOR INTERMITTENT PROBLEMS (SYMPTOM SIMULATION) (COROLLA_ZRE142 RM000000XHP0ELX.html)

A

6.CHECK FRONT SPEED SENSOR TIP

Turn the ignition switch off.

Remove the front speed sensor (COROLLA_ZRE142 RM000002VPG01IX.html).

Check the speed sensor tip.
OK:
No scratches or foreign matter on the sensor tip.
NOTICE:
Check the speed sensor signal after cleaning or replacement (COROLLA_ZRE142 RM000001JBD052X.html).

CLEAN OR REPLACE FRONT SPEED SENSOR

OK

7.CHECK FRONT SPEED SENSOR ROTOR

Remove the front speed sensor rotor (COROLLA_ZRE142 RM000001HAY03AX.html).

Check the speed sensor rotors.
OK:
No scratches, oil, or foreign matter on the rotors.
NOTICE:
Check the speed sensor signal after cleaning or replacement (COROLLA_ZRE142 RM000001JBD052X.html).
HINT:
If the front speed sensor rotor needs to be replaced, replace it together with the front axle outboard joint shaft assembly.

CLEAN OR REPLACE FRONT SPEED SENSOR ROTOR

OK

8.RECONFIRM DTC

Install the front speed sensor and the front speed sensor rotor.

Clear the DTCs (COROLLA_ZRE142 RM000000XHV0F3X.html).

Start the engine.

Drive the vehicle at a speed of 20 km/h (12 mph) or more for at least 60 seconds.

Check if the same DTC is recorded (COROLLA_ZRE142 RM000000XHV0F3X.html).

Result:

Result
Proceed to
DTCs (C1235/35, C1236/36, C1238/38 and/or C1239/39) are output
A
DTCs (C1235/35, C1236/36, C1238/38 and C1239/39) are not output
B

CHECK FOR INTERMITTENT PROBLEMS (SYMPTOM SIMULATION) (COROLLA_ZRE142 RM000000XHP0ELX.html)

A

9.REPLACE FRONT SPEED SENSOR

Turn the ignition switch off.

Replace the front speed sensor (COROLLA_ZRE142 RM000002VPG01IX.html).
NOTICE:
Check the speed sensor signal after replacement (COROLLA_ZRE142 RM000001JBD052X.html).

NEXT

10.RECONFIRM DTC

Clear the DTCs (COROLLA_ZRE142 RM000000XHV0F3X.html).

Start the engine.

Drive the vehicle at a speed of 20 km/h (12 mph) or more for at least 60 seconds.

Check if the same DTC is recorded (COROLLA_ZRE142 RM000000XHV0F3X.html).

Result:

Result
Proceed to
DTCs (C1235/35, C1236/36, C1238/38 and/or C1239/39) are output
A
DTCs (C1235/35, C1236/36, C1238/38 and C1239/39) are not output
B

END

A

11.REPLACE FRONT SPEED SENSOR ROTOR

Turn the ignition switch off.

Remove the front drive shaft assembly (COROLLA_ZRE142 RM000001HAY03AX.html).

Replace the front axle outboard joint shaft assembly (front speed sensor rotor) (COROLLA_ZRE142 RM000001IWA03MX.html).
HINT:
If the front speed sensor rotor needs to be replaced, replace it together with the front axle outboard joint shaft assembly.
NOTICE:
Check the speed sensor signal after replacement (COROLLA_ZRE142 RM000001JBD052X.html).

NEXT

12.RECONFIRM DTC

Install the front drive shaft assembly.

Clear the DTCs (COROLLA_ZRE142 RM000000XHV0F3X.html).

Start the engine.

Drive the vehicle at a speed of 20 km/h (12 mph) or more for at least 60 seconds.

Check if the same DTC is recorded (COROLLA_ZRE142 RM000000XHV0F3X.html).

Result:

Result
Proceed to
DTCs (C1235/35, C1236/36, C1238/38 and/or C1239/39) are output
A
DTCs (C1235/35, C1236/36, C1238/38 and C1239/39) are not output
B

END

REPLACE BRAKE ACTUATOR ASSEMBLY (COROLLA_ZRE142 RM0000013P6022X.html)

13.REPLACE REAR SPEED SENSOR AND REAR SPEED SENSOR ROTOR

Turn the ignition switch off.

Replace the rear speed sensor (COROLLA_ZRE142 RM000002VPC02SX.html).

Replace the rear axle hub and bearing assembly (rear speed sensor rotor) (COROLLA_ZRE142 RM000001Y1R05IX.html).
HINT:
The rear speed sensor rotor is incorporated into the rear axle hub and bearing assembly.
If the rear speed sensor rotor needs to be replaced, replace it together with the rear axle hub and bearing assembly with rear speed sensor.
NOTICE:
Check the speed sensor signal after replacement (COROLLA_ZRE142 RM000001JBD052X.html).

NEXT

14.RECONFIRM DTC

Clear the DTCs (COROLLA_ZRE142 RM000000XHV0F3X.html).

Start the engine.

Drive the vehicle at a speed of 20 km/h (12 mph) or more for at least 60 seconds.

Check if the same DTC is recorded (COROLLA_ZRE142 RM000000XHV0F3X.html).

Result:

Result
Proceed to
DTCs (C1235/35, C1236/36, C1238/38 and/or C1239/39) are output
A
DTCs (C1235/35, C1236/36, C1238/38 and C1239/39) are not output
B

END

REPLACE BRAKE ACTUATOR ASSEMBLY (COROLLA_ZRE142 RM0000013P6022X.html)

Tester Connection	Switch Condition	Specified Condition
A27-2 (FR+) - Body ground	Ignition switch ON	8 to 14 V
W1-2 (RR+) - Body ground	Ignition switch ON	8 to 14 V