P0505

Tests 1 - 2:

Tests 3 - 6:

Tests 7 - 8:

SYMPTOM
P0505-IDLE AIR CONTROL MOTOR CIRCUITS

WHEN MONITORED
Engine running. Battery voltage greater than 10 volts. IAC motor operating.

SET CONDITION
The PCM senses a short to ground or battery voltage on any of the four Idle Air Control (IAC) driver circuits for 2.75 seconds while the IAC motor is active.

POSSIBLE CAUSES
- Intermittent condition
- IAC # 1 driver circuit shorted to # 2, # 3, or # 4
- IAC # 2 driver circuit shorted to # 3 or # 4
- IAC # 3 driver circuit shorted to # 4
- IAC driver circuit shorted to voltage
- IAC driver circuit shorted to ground
- IAC motor operation
- IAC motor