As monitoring the errors of several sensors and actuator circuit, TCM related problem and ECM error, if any problem occurs, ECM turns Engine Check Lamp ON at cluster to notify driver the occurrence of a problem. Generally, Engine Check Lamp turns ON at Ignition ON and turns OFF within couple of seconds after turning engine ON. If engine check lamp turns on during driving, perform diagnosis of engine system and auto-transaxle system.
P0650 is set when 1)excessive current is detected in engine check lamp control circuit for more than 2.0 sec.. at engine check lamp ON condition or 2)like open or short to ground, no current is detected. This code is due to open in control circuit or opened filament of lamp component.
Item
Detecting Condition
Possible Cause
DTC Strategy
Voltage monitoring
Open in engine check lamp
Engine check lamp circuit.
Enable Conditions
IG key ON (Monitoring only performed within lamp operating condition)
Threshold Value
Short to battery
Short to ground
Wiring open
Diagnostic Time
2.0 sec.
Fail Safe
Fuel cut
NO
-
EGR Off
Fuel Limit
Check Lamp
OFF