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 C213-2 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 C213-2 terminal 81 is grounded
M/T : ECM connector C213-2 terminal 81 is opened(no wiring exists)
P1587 is set when ECM is recognized as 1)A/T but CAN communication signal is not transmitted from TCM 2)M/T but CAN communication signal is transmitted from TCM. After checking if A/T, M/T auto recognition terminal is correct for each vehicle option, if no problem is detected, check poor connection in CAN communication circuit or CAN communication problem of TCM.
Item
Detecting Condition
Possible Cause
DTC Strategy
? Voltage monitoring
? A/T, M/T recognition terminal circuit
? CAN communication line circuit
? TCM component failure
? ECM component failure
Enable Conditions
? Engine running
Threshold Value
? TCM signal is not detected at A/T vehicle
TCM signal is detected at M/T vehicle
Diagnostic Time
? 1.0 sec.
Fail Safe
Fuel Cut
NO
? Glow Lamp ON.
EGR Off
Fuel Limit
Check Lamp