P0509

Test 1 - 2:

Test 3 - 6:

SYMPTOM
P0509-IAC VALVE SENSE CIRCUIT HIGH

WHEN MONITORED
Engine running. Battery voltage greater than 10 volts.

SET CONDITION
The IAC sense circuit is greater than 980 mA. One Trip Fault.

POSSIBLE CAUSES
- IAC motor operation
- IAC motor
- (K60) IAC signal circuit shorted to voltage
- (K39) IAC motor control circuit shorted to voltage
- (K60) IAC signal circuit shorted to (K39) IAC motor control circuit
- PCM