AT 261 - Chapter 8f Air Inlet systems, Idle Air ControlName: _________________________________________Date: __________________________________________Station 1 - Setting IdleTools you will need:2001 Honda AccordScrewdriverScan ToolJob AidUsing the worksheet provided adjust the idle to spec, and answer the following questions below.1. Does the IAC stay connected? __________________2. What other items must be checked before setting idle? _____________________________________________________________________________________________________________________________________3. At step 1, what connector do you disconnect? __________________________________4. At step 3, how do you know when the vehicle is warmed up? __________________________________5. What should the idle be for this vehicle? _________________________________________________6. What is the most you can turn the idle screw without checking it? ____________________________7. After your "final" adjustment, what items must be on, and how long should the vehicle idle? _____________________________________________________________________________________________________________8. What is the last step? ________________________________________________________________________Station 2 - Monitoring IAC (Scan tool, DVOM, and Noid Lights)Tools you will need:2001 Windstar (Red)Genisys Scan ToolDVOMNoid Lights Locate the IAC What are the wire colors/codes for the IAC sensor? _____________________________________ What is the pin numbers back to the PCM? _______________________________ What is the pin numbers back to the PCM? _______________________________ Turn the vehicle to the "ON" position (DO NOT START THE VEHICLE!) Verify the operation of the check engine lamp (MIL), it should come on when the vehicle is turned on, then will STAY on. This indicates a code (either Continuous or Intermittent) Locate the DLC (Data Link Connector) Connect the scan tool to the DLC On the scan tool, select "Pathfinder 2004" then select a 2000 FORD WINDSTAR 3.8 from the scan tool. Select ENGINE/PCM from the menu Select SPECIAL TESTS Select OUTPUT CONTROLS1What is warning number 1 ___________________________________________________________What is warning number 2 ___________________________________________________________What is warning number 3 ___________________________________________________________Note: This test causes "everything" that is an output of the PCM to activate! This makes the technician's life easier by being able to test some outputs without having to meet specific criteria to activate outputs stuck as the EGR solenoid and the Canister Purge Solenoid. After the warnings, pick “All Outputs On“scroll down to the data line labeled "IDLE AIR CONTROL PERCENTAGE" What is it currently? ________________________% Press the button labeled "START" on the scan tool Press "ON" What is it currently? ________________________% (On) Press "OFF" Disconnect the two-wire connector to the IAC valve, and install the noid-light between the connector pins on the PCM side of the circuit. Press "ON" Did the noid light activate? _______________________ (Noid lamp) Press "OFF" Remove the noid light and reconnect the two-wire connector to the IAC valve Place your hand on the IAC valve Press "ON" Did you feel a click? _______________________ (On- Hand) Press "OFF"Note: You just verified several tests of the IAC. 1 - that the PCM is in command of the IAC (scan tool), 2 - That the IAC is receiving electrical power from the PCM (noid light), and 3 - The IAC can move (hand). Press "ON" on the scan tool. Change the DVOM setting to Volts DC What is the voltage being sent to the IAC? ___________________________________ REMOVE the DVOM Press "OFF" on the scan tool. Remove the IAC - Observe the pintle and plunger inside the IAC. (Use a bright light!)Note: Do NOT damage the IAC mounting gasket! It will need to be reused. Press "ON" on the scan tool. - What happens with the IAC valve? __________________________ Reinstall the IAC - Remove the Scan Tool, and disconnect the battery.2Station 3 - Monitoring IAC (Scan tool only)Tools you will need:2001 Windstar (Black)Genisys Scan Tool Turn the vehicle to the "ON" position (DO NOT START THE VEHICLE!) Verify the operation of the check engine lamp (MIL), it should come on when the vehicle is turned on, then will STAY on. This indicates a code (either Continuous or Intermittent) Locate the DLC (Data Link Connector) Connect the scan tool to the DLC On the scan tool, select "Pathfinder 2004" then select a 2001 FORD WINDSTAR 3.8 from the scan tool. Select ENGINE/PCM from the menu Select ENGINE 1 Scroll down to the data line labeled "IDLE AIR CONTROL PERCENTAGE" (To Top) Scroll down to the data line labeled "RPM” (To Top) Press the "GRAPH" Button on the scan tool What is it currently? ________________________% (Graph) Start the vehicle. What is it currently? ________________________% (Running) Wait for the idle to stabilize What is it currently? ________________________% (Slow idle) With the engine idling - DISCONNECT the IAC What happens? (Look at RPM)Note: If the vehicle stalls restart it - it should idle (for this vehicle) What is it currently? ________________________% (IAC disconnected.) With the engine idling - RECONNECT the IAC What is it currently? ________________________% (IAC reconnected.) Did the MIL come on? _______________________________ From this diagnosis is this IAC functioning properly? _____________________________________Station 4 - Inspecting Air Inlet SystemsTools you will need:1996 Ford Thunderbird"Customer Complaint - My car stalls right after it starts"Inspect the throttle linkage, and body for damage. Check TSBs. What is the warning on the throttle body? _______________________________________________Search for “stall” in TSBs.How many TSBs are there for stalling? _________________________________What is the description (issue) for this TSB?3__________________________________________________________________________________________________________________________________________________________________________________________What is the “action” for this TSB? _____________________________________________________________________________________________What is the service