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 |
•
Signal monitoring | 1. A/T, M/T recognition terminal circuit 2. CAN communication line circuit 3. TCM component failure 4. ECM component failure | ||
Enable Conditions |
•
IG key ON | |||
Threshold value |
•
TCM signal is not detected at A/T vehicle
•
TCM signal is detected at M/T vehicle | |||
Diagnosis Time |
•
1sec. | |||
Fail Safe | Fuel cut | NO |
•
Glow lamp blinking | |
EGR Off | NO | |||
Fuel Limit | NO | |||
Check Lamp | OFF | |||
