DTC P0505 IDLE AIR CONTROL VALVE (IACV) - AUXILIARY AIR CONTROL (AAC) VALVE - Diagnostic Procedure
EF & EC-7203flowchartDTC P0505 IDLE AIR CONTROL VALVE (IACV) — AUXILIARY AIR CONTROL (AAC) VALVE
CG10, CGA3
Diagnostic Procedure
Diagnostic Procedure - Steps 1 to 3
1
1. CHECK POWER SUPPLY: 1. Turn ignition switch "OFF". 2. Disconnect IACV-AAC valve harness connector. 3. Turn ignition switch "ON". 4. Check voltage between terminal 2 and ground with CONSULT-II or tester. Voltage: Battery voltage
2
OK or NG
NG (GO TO 2)
2. DETECT MALFUNCTIONING PART: Check the following. • Harness connectors F32, E67 • Harness for open or short between IACV-AAC and ECM relay • Harness for open or short between IACV-AAC valve and ECM
2. DETECT MALFUNCTIONING PART: Check the following. • Harness connectors F32, E67 • Harness for open or short between IACV-AAC and ECM relay • Harness for open or short between IACV-AAC valve and ECM
Repair open circuit or short to ground or short to power in harness or connectors.
OK (GO TO 3)
3
3. CHECK OUTPUT SIGNAL CIRCUIT: 1. Turn ignition switch "OFF". 2. Disconnect ECM harness connector. 3. Check harness continuity between ECM terminal 2 and terminal 1, ECM terminal 29 and terminal 3. Refer to wiring diagram. Continuity should exist. 4. Also check harness for short to ground and short to power.
4
OK or NG
NG
Repair open circuit or short to ground or short to power in harness or connectors.
OK (GO TO 4)
5
GO TO 4