P1588 is set when the signal from A/T, M/T auto recognition terminal(ECM CUD-K terminal 81) changes during engine run. This code is due to open in terminal for A/T option, grounded condition for M/T option. This code is normally arises from A/T option vehicle. Check the grounding condition of A/T, M/T auto recognition terminal.
Item | Detecting Condition | Possible Cause | ||
DTC Strategy |
•
Voltage monitoring |
•
A/T, M/T recognition terminal circuit
•
ECM component failure | ||
Enable Conditions |
•
Engine run | |||
Threshold Value |
•
A/T, M/T auto recognition signal changes at engine ON. | |||
Diagnostic Time |
•
1.0 sec. | |||
Fail Safe | Fuel Cut | NO |
•
Glow Lamp blinks. | |
EGR Off | NO | |||
Fuel Limit | NO | |||
Check Lamp | NO | |||
