Because both A/T and M/T fuel control map is inputted in one type of ECM and selecting option is possible, one type is applied to both A/T and M/T option.
When ECM is installed to vehicle, A/T and M/T recognition is performed by ECM automatically as checking whether ground line(ECM connector CUD-K terminal 81) is grounded or opened.(A/T and M/T recognition is performed every IG KEY ON process.)
If A/T, M/T recognition is not fulfilled well or any error occurs during the process, engine power generation is not sufficient and glow lamp on cluster blinks.
A/T : ECM connector CUD-K terminal 81 is grounded
M/T : ECM connector CUD-K terminal 81 is opened(no wiring exists)
P1586 is set when recognized A/T, M/T data based on ECM CUD-K terminal 81 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 | ||
Enable Conditions | ● IG KEY "ON" | |||
Threshold Value | ● A/T, M/T learning error (when data writing on EEPROM inside of ECM is impossible) | |||
Diagnostic Time | ● 4.0 sec. | |||
Fail Safe | Fuel Cut | NO | ● Glow Lamp blinks. | |
EGR Off | NO | |||
Fuel Limit | NO | |||
Check Lamp | NO | |||
