1st Gear Recognition Switch is used to control fuel quantity and improve a climb performance when going up a slope.
This monitoring is to detect the implausible input from 1 st gear recognition switch or neutral switch and carried out only once in the same driving cycle.
If the auto transaxle generates threshold value, the ECM judged this as a fault and DTC is set.
Item
Detecting Condition
Possible Cause
DTC Strategy
? Circuit continuity check
? Open or short to ground in 1st gear recognition switch power circuit
? Open in 1st gear recognition switch ground circuit
? Faulty 1st gear recognition switch
? Faulty ECM
Enable Conditions
? Engine run
Threshold Value
? Short for 1st gear recognition switch circuit
Diagnostic Time
? 1 sec.
MIL
Fuel Limit
Fuel Cut
EGR Off
? No