Checking Idle Air Control Motor
NOTE:
For connector identification, see CONNECTOR IDENTIFICATION
. For component location, see COMPONENT LOCATIONS
. For circuit identification and wiring diagram, see WIRING DIAGRAMS article. After each repair procedure has been completed, reconnect all components.
NOTE:
For idle air control motor testing, see DTC P0505: IDLE AIR CONTROL MOTOR CIRCUITS under DIAGNOSTIC TESTS in appropriate SELF-DIAGNOSTICS article.
- Start engine an allow it to reach normal operating temperature. Using scan tool, actuate Idle Air Control (IAC) motor to 1400 RPM. If engine speed does not increase to 1400 RPM, go to next step. If engine speed increased to 1400 RPM, stop actuation. IAC motor is operating properly this time. Test is complete. Perform POWERTRAIN VERIFICATION TEST VER-2 under VERIFICATION TESTS.
- Turn ignition off. Disconnect IAC motor connector. IAC motor is located on throttle body. Visually inspect connector for corroded, damaged, pushed-out or miswired terminals. Repair connector and terminals as necessary. Perform POWERTRAIN VERIFICATION TEST VER-2 under VERIFICATION TESTS. If connector and terminals are okay, go to next step.
- Ensure ignition is off. Disconnect PCM C1 harness connector. Inspect connectors for damaged pins, corrosion and loose terminals. Repair connectors as necessary. If connectors are okay, measure resistance of each wire between IAC motor harness connector and PCM C1 harness connector. If each resistance is less than 5 ohms, replace IAC motor. If any resistance is 5 ohms or more, repair open in appropriate wire between IAC motor and PCM. Perform POWERTRAIN VERIFICATION TEST VER-2 under VERIFICATION TESTS.