P0505

Test 1 - 2:

Test 3 - 7:

SYMPTOM
P0505-IDLE AIR CONTROL MOTOR CIRCUITS

WHEN MONITORED
At power-up 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 Idle Air Control (IAC) driver circuits for 100 msec while the IAC motor is active.

POSSIBLE CAUSES
- Good trip equal to zero
- (K40) IAC # 1 driver circuit shorted to # 2, # 3, Or # 4
- (K60) IAC # 2 driver circuit shorted to # 3 Or # 4
- (K39) IAC # 3 driver circuit shorted to (K59) IAC # 4 driver Circuit
- IAC driver circuit shorted to voltage
- IAC driver circuit shorted to ground IAC motor operation
- IAC motor