Vehilcles have many options in one type of ECM. So automatic recognition function is applied. The options that can be recognized are MT/AT, 2/4WD, DPF, etc). When a ECM is installed to vehicle, these options recognition are performed by the ECM automatically as checking whether ground line is grounded or opened every IG KEY ON process.
If this recognition is not fulfilled well or any error occurs during the process, engine power generation is not sufficient and glow lamp on cluster blinks.
If a system is intalled, the ECM connector is grounded.
Else is opened (no wire exists).
P1586 is set when recognized option data based on ECM terminal state(grounded or opened) is not readable or writable at EEP ROM. This code is due to ECM failure.
Item | Detecting Condition | Possible Cause | ||
DTC Strategy |
•
Software monitoring |
•
ECM component failure
•
ECM recognition terminal/wiring to ground | ||
Enable Conditions |
•
IG KEY "ON" | |||
Threshold value |
•
Options(AT/MT, 2/4WD, DPF) learning error(when data writing on EEPROM inside of ECM is impossible)
•
Related chipset error | |||
Diagnosis Time |
•
At the point of ECU initialization | |||
Fail Safe | Fuel cut | NO |
•
Glow lamp blinking | |
EGR Off | NO | |||
Fuel Limit | NO | |||
MIL | OFF | |||
