DTC Description
DTC DETECTION LOGIC
| DTC | CONSULT screen terms(Trouble diagnosis content) | DTC detection condition | |
|---|---|---|---|
| U0122 | LOST COMM (BRAKE C/U) (Lost Communication With Vehicle Dynamics Control Module) | Diagnosis condition | When the ignition switch is ON |
| Signal | CAN communication signal | ||
| Threshold | TCM is unable to receive the CAN communications signal from ABS actuator and electric unit (control unit) | ||
| Diagnosis delay time | Continuously for 2 seconds or more | ||
POSSIBLE CAUSE
- ABS actuator and electric unit (control unit)
- Harness or connector (CAN communication line is open or shorted)
FAIL-SAFE
Not changed from normal driving
DTC CONFIRMATION PROCEDURE
- PREPARATION BEFORE WORK
If another "DTC CONFIRMATION PROCEDURE" occurs just before, ignition switch OFF and wait for at least 10 seconds, then perform the next test.
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GO TO 2.
- PERFORM DTC CONFIRMATION PROCEDURE
- Ignition switch ON and wait for at least 2 seconds.
- Check the DTC.
Is DTC detected?
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Proceed to Diagnosis Procedure .
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To check malfunction symptom before repair: Refer to Intermittent Incident .
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Confirmation after repair: INSPECTION END