P0508

Tests 1 - 2:

Tests 3 - 6:

Tests 7 - 8:

SYMPTOM
P0508-IAC VALVE SENSE CIRCUIT LOW

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

SET CONDITION
The IAC sense circuit is less than 175 mA. One Trip Fault.

POSSIBLE CAUSES
- Intermittent condition
- IAC motor
- IAC motor driver circuit shorted to ground
- IAC motor sense circuit open
- IAC motor sense circuit shorted to ground
- IAC motor driver circuit open
- PCM