Diagnosis Procedure
WARNING: This page is about a different car, the 2018 Nissan Maxima. However, it is still accessible from the selected car via links, so may be relevant.
- CHECK DTC PRIORITY
If DTC "C1A03" is displayed with DTC "U1000" or "C1A04", first diagnose the DTC "U1000" or "C1A04".
Is applicable DTC detected?
YES
Perform diagnosis of applicable DTC.
- U1000: Refer to DTC Logic .
- C1A04: Refer to DTC Description .
NO
GO TO 2.
- CHECK DATA MONITOR
- Start the engine.
- Drive the vehicle.
- Check that the value of "VHCL SPD AT" is almost the same as the value of "VHCL SPD SE" in "Data Monitor" mode of "LASER/RADAR".
CAUTION: Be careful of the vehicle speed.Is the inspection result normal?
YES
Replace the ADAS control unit. Refer to Removal and Installation .
NO
GO TO 3
- CHECK TCM SELF-DIAGNOSIS RESULTS
- Perform "All DTC Reading".
- Check if any DTC is detected in "Self Diagnostic Result" mode of "TRANSMISSION".
Is any DTC detected?
YES
Perform diagnosis on the detected DTC and repair or replace the malfunctioning parts. Refer to DTC Index .
NO
GO TO 4
- CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) SELF-DIAGNOSIS RESULTS
Check if any DTC is detected in "Self Diagnostic Result" mode of "ABS".
Is any DTC detected?
YES
Perform diagnosis on the detected DTC and repair or replace the malfunctioning parts. Refer to DTC Index .
NO
Replace the distance sensor (ICC sensor). Refer to Removal and Installation .