ABS

DTC C1021 / C1022 / C1025 / C1026 / C1031 / C1032 / C1035 / C1036: Wheel Speed Sensor Circuit Failure / Range / Performance

DTC C1021 / C1025 / C1031 / C1035: Right-Front / Left-Front / Right-Rear / Left-Rear Wheel Speed Sensor Circuit Failure

DTC C1022 / C1026 / C1032 / C1036: Right-Front / Left-Front / Right-Rear / Left-Rear Wheel Speed Sensor Circuit Range / Performance

Wiring Diagram










DTC Detecting Condition and Trouble Area





NOTE:

When the vehicle was operated in any of the following ways, one of these DTCs may be set even when the sensor is in good condition. If such possibility is suspected, clear DTC once referring to DTC Clearance DTC Clearance
and after performing the driving test as described in Step 2 of ABS Check ABS Check
, check whether or not any abnormality exists.

- The vehicle was driven with parking brake pulled.
- Wheel spin occurred while driving.
- Wheel(s) was turned while the vehicle was jacked up.
- The vehicle was stuck.

DTC Troubleshooting

1.
Was "ABS Check" performed?
YES
Go to Step 2.
NO
Go to ABS Check.

2. Check tire condition

Check that tire pressure is specifications.

Are they in good condition?
YES
Go to Step 3.
NO
Replace tire or adjust tire pressure and recheck.

3. Wheel speed sensor circuit check

Disconnect ABS hydraulic unit / control module connector and applicable wheel speed sensor connector with ignition switch turned OFF.
Check for proper connection to ABS hydraulic unit / control module connector at applicable terminals and terminals of applicable wheel speed sensor.
If OK then check applicable wheel speed sensor circuit for open, short and high resistance.

Is each applicable wheel speed sensor circuit in good condition?
YES
Go to Step 4.
NO
Repair circuit and recheck

4. Wheel speed sensor check

Inspection applicable wheel speed sensor referring to Front and Rear Wheel Speed Sensor Inspection Front and Rear Wheel Speed Sensor Inspection.

Is it in good condition?
YES
Go to Step 5.
NO
Clean or replace.

5. Wheel speed sensor encoder check

Inspection applicable wheel speed sensor encoder referring to Front Wheel Speed Sensor Encoder On-Vehicle Inspection Front Wheel Speed Sensor Encoder On-Vehicle Inspection
and/or Front Wheel Speed Sensor Encoder On-Vehicle Inspection Front Wheel Speed Sensor Encoder On-Vehicle Inspection.

Is it in good condition?
YES
Go to Step 6.
NO
Clean or replace wheel hub assembly.

6. Wheel speed sensor signal check

Inspection applicable wheel speed sensor referring to Front Wheel Speed Sensor Encoder On-Vehicle Inspection Front Wheel Speed Sensor Encoder On-Vehicle Inspection.

Is it in good condition?
YES
Substitute a known-good wheel hub assembly and recheck. If DTC detected, substitute a known-good ABS hydraulic unit / control module and recheck.
NO
Replace wheel speed sensor and recheck.