Permanent DTC is defined in SAE J1979/ISO 15031-5 Service $0A.
ECM stores a DTC issuing a command of turning on MIL as a permanent DTC and keeps storing the DTC as a permanent DTC until ECM judges that there is no presence of malfunction.
Permanent DTCs cannot be erased by using the erase function of CONSULT or Generic Scan Tool (GST) and by disconnecting the battery to shut off power to ECM. This prevents a vehicle from passing the in-use inspection without repairing a malfunctioning part.
When not passing the in-use inspection due to more than one permanent DTC, permanent DTCs should be erased, referring to this manual.
NOTE:
PERMANENT DTC SET TIMING
The setting timing of permanent DTC is stored in ECM with the lighting of MIL when a DTC is confirmed.
Wheel alignment
Inspection
PRELIMINARY INSPECTION
WARNING:
Always adjust the wheel alignment with the vehicle on a flat surface.
NOTE:
If the wheel alignment is out of specification, inspect and replace any
damaged or worn rear suspension parts
before making any adjustments.
Check and adjust the wheel ...
Vehicle Dynamic Control (VDC) system
The Vehicle Dynamic Control (VDC) system uses
various sensors to monitor driver inputs and vehicle
motion. Under certain driving conditions,
the VDC System helps to perform the following
functions:
Controls brake pressure to reduce wheel
slip on one slipping drive wheel so power is
trans ...
Diagnosis system (ECM)
Diagnosis description : 1st trip detection
logic and two trip detection logic
When a malfunction is detected for the first time, 1st trip DTC and 1st trip
Freeze Frame data are stored in the
ECM memory. The MIL will not illuminate at this stage. <1st trip>
If the same malfunction is dete ...