P0505

Test 1 - 2:

Test 3 - 6:

Test 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 0.050 seconds while the IAC motor is active.

POSSIBLE CAUSES
- Good trip equal to zero
- 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
- PCM