Diagnosis Procedure

WARNING: This page is about a different car, the 2019 Infiniti QX60. However, it is still accessible from the selected car via links, so may be relevant.

CHECK DTC PRIORITY
If DTC "C1A27" is displayed with DTC "U1000", "U0415" or "U0121", first diagnose the DTC "U1000", "U0415" or "U0121".

Is applicable DTC detected?

YES

Perform diagnosis of applicable.
- U1000: Refer to DTC Logic
- U0415: Refer to DTC Logic
- U0121: Refer to DTC Logic
NO

GO TO 2.
CHECK POWER SUPPLY CIRCUIT OF ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)
Check power supply circuit of ABS actuator and electric unit (control unit). Refer to Diagnosis Procedure (Type 1) or Diagnosis Procedure (Type 2).

Is the inspection result normal?

YES

Perform self-diagnosis of ABS actuator and electric unit (control unit). Refer to DTC Index (Type 1) or DTC Index (Type 2).

NO

Repair the harnesses or connectors.