Component Location
General Description
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)
DTC Description
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 normal for each vehicle option, if no problem is detected, check poor connection in CAN communication circuit or CAN communication problem of TCM.
DTC Detecting Condition
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 run
|
Threshold Value | When TCM signal(through CAN communication) opposite to recognized data(A/T or M/T) at ECM is detected.
|
Diagnostic Time | 1.0 sec.
|
Fail Safe | Fuel Cut | NO | Glow Lamp blinks.
|
EGR Off | NO |
Fuel Limit | NO |
Check Lamp | NO |