P0505

Tests 387 - 392:

Tests 393 - 397:

Tests 398 - 402:

Tests 403 - 407:

Tests 408 - 412:

Tests 413 - 418:

Tests 419 - 424:

Tests 425 - 429:

Tests 430 - 432 P-505B:

Tests 433 - 435 P-505C:

Tests 436 - 438 P-505D:

Tests 439 - 441 P-505E:

SYMPTOM
P-0505 IDLE AIR CONTROL MOTOR CIRCUITS

WHEN MONITORED
At key on and battery voltage greater than 11.5 volts.

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

POSSIBLE CAUSES
- IAC #4 driver circuit shorted to ground
- PCM connector observable defect
- Idle air control motor defective
- IAC #1 driver circuit shorted to ground
- IAC #1 driver ckt shorted to another driver ckt
- IAC #2 driver circuit shorted to ground
- IAC #2 driver ckt shorted to another driver ckt
- IAC #3 driver circuit shorted to ground
- IAC #3 driver circuit shorted to IAC #4 driver ckt
- IAC motor circuit wiring harness intermittent def
- IAC Motor circuit wiring harness observable defect
- IAC motor driver (IAC # 1) circuit open
- PCM connector (IAC # 1) terminal damaged, pushed out, or miswired
- PCM defective (IAC # 1)
- PCM defective (IAC # 2)
- IAC motor driver (IAC # 2) circuit open
- PCM connector (IAC # 2) terminal damaged, pushed out or miswired
- IAC motor driver (IAC # 3) circuit open
- PCM connector (IAC # 3) terminal damaged, pushed out or miswired
- PCM defective (IAC # 3)
- IAC motor driver (IAC # 4) circuit open
- PCM connector (IAC # 4) terminal damaged, pushed out or miswired
- PCM defective (IAC # 4)