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2003 Mazda 6 V6-3.0L DOHC Airflow Mode Actuator Manual

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AIRFLOW MODE ACTUATOR INSPECTION Full-auto Air Conditioner 1. Connect battery positive voltage to terminal E or F and ground to terminal F or E of the airflow mode actuator. 2. Verify that the airflow mode actuator operates as shown. * If not as specified, replace the airflow mode actuator 3. Verify that the resistance between the terminals of the airflow mode actuator is as shown in the graph. * If not as specified, replace the airflow mode actuator. Manual Air Conditioner Operating inspection 1. Turn the fan switch to OFF. 2. Turn the mode dial to VENT. 3. Turn the ignition switch to ON position, (engine ON) 4. Turn the fan switch 4th position. 5. Turn the mode dial from VENT to DEFROSTER. 6. Verify that the airflow mode actuator moves smoothly. * If not as specified, inspect the airflow mode main link and sub link for clogging and deformity. * If the actuator cannot move at all, go to voltage inspection. Voltage inspection 1. Disconnect the airflow mode actuator connector. 2. Turn the ignition switch to ON position, (engine OFF) Zoom Sized for Print Zoom Sized for Print Zoom Sized for Print 3. Verify that the voltage between the terminals of airflow mode actuator (harness-side) is as shown in the table. * If not as specified, perform the harness inspection and mode switch inspection. (See CLIMATE CONTROL UNIT INSPECTION, Manual Air Conditioner.) * If as specified, replace the airflow mode actuator

Kia Sorento/ Sedona Throttle Position Sensor W/ 3.5L Engine (Fuel System) Service Procedure

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Replacement Procedure: 1. Turn ignition OFF. Remove engine cover and disconnect electrical connector from TP Sensor. 2. Remove two (2) retaining screws from TP Sensor and remove from throttle body. 3. Install new TP Sensor to throttle body. Install retaining screws and hand tighten lightly. Adjustment will be required. Re-install electrical connector to TP Sensor. 4. Install Global Diagnostic System. a. Select “System Option” b. Select “Idle RPM Adjust Mode” c. Apply Parking Brake 5. Select Neutral position and place engine in idle condition with A/C OFF. 6. Remove rubber plug and adjust using instructions provided on screen. Set Base idle between 800~900 rpm Adjust TPS: 7. Using the GDS scan tool, monitor current data using two (2) parameters: • Closed Throttle Position Switch • Throttle Position Voltage Value 8. Open throttle by hand very slowly until idle switch status switches to OFF. Note the TPS voltage value. Voltage:____________________________ 9. Close throttle and record the TPS voltage. oltage:____________________________ Closed throttle voltage should be 30~65mV less than the voltage noted in step eight (8). Adjust TP Sensor and repeat test as required. WARRANTY CLAIM INFORMATION: 10. Tighten TP Sensor screws as required. Torque is 12~18 inch lbs. Verify switching of throttle switch with throttle plate movement. 11. Install engine cover. 12. Clear any stored DTC which may have set during service procedure. Remove GDS tool from vehicle

1993 Ford Crown Victoria V8-281 4.6L SOHC Engine – Lean Driveability Symptoms Manual

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1. Look at the BARO PID. Refer to the Barometric Pressure Reference Chart in this article. At sea level, BARO should read about 159 Hz (29.91 in. Hg). As a reference, Denver, Colorado at 1524 meters (5000 ft.) altitude should be about 144 Hz (24.88 in.Hg). Normal learned BARO variability is up to +/- 6 Hz (+/- 2 in. Hg.). If BARO indicates a higher altitude than you are not at (7 or more Hz lower than expected), you may have MAF contamination. If available, Service Bay Diagnostic System (SBDS) has a Manifold Absolute Pressure (MAP) sensor that can be used as a barometric pressure reference. Use “MAP/BARO” test under “Powertrain,” “Testers and Meters.” Ignore the hookup screen. Connect GP2 to the reference MAP on the following screen. 2. On a fully warmed up engine, look at Long Term Fuel Trim at idle, in Neutral, A/C off, (LONGFT1 and/or LONGFT2 PIDs). If it is more negative than -12%, the fuel system has learned lean corrections which may be due to the MAF sensor over-estimating air flow at idle. Note that both Banks 1 and 2 will exhibit negative corrections for 2-bank system. If only one bank of a 2-bank system has negative corrections, the MAF sensor is probably not contaminated. 3. On a fully warmed up engine, look at MAF voltage at idle, in Neutral, A/C off (MAF V PID). If it’s 30% greater than the nominal MAF V voltage listed in the Powertrain Control/Emissions Diagnosis (PC/ED) Diagnostic Value Reference Charts for your vehicle, or greater than 1.1 volts as a rough guide, the MAF sensor is over-estimating air flow at idle. 4. If at least tow of the previous three steps are true, proceed to disconnect the MAF sensor connector. This puts the vehicle into Failure Mode and Effects Management (FMEM). In FMEM mode, air flow is inferred by using rpm and throttle position instead of reading the MAF sensor. (In addition, the BARO value is reset to a base/unlearned value.) If the lean driveability symptoms go away, the MAF sensor is probably contaminated and should be replaced. If the lean driveability symptoms do not go away, go to the PC/ED Service Manual for the appropriate diagnostics.

1990-1994 Lexus LS400 How to Check Air Conditioning Diagnostic

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1) First perform an indicator check to see if all the lights are working properly. Press and hold the AUTO & REC buttons and then start the car. Release the buttons after the car has started. All the lights should light up and go off 4 times in a row at one second intervals. You should also hear a beep as the indicators light up. After the indicators blink 4 times you’re in A/C diagnostic mode. 2) Read the code displayed on the LCD. Here you see a code 21; this can happen if you’re not in light because it refers to the solar sensor. 3) Here’s what normal will look like, code 00. When the codes are displayed they blink and beep. Here are all the codes that can be displayed……… Code – Meaning 00 – Normal 11 – Open or short in room temperature sensor circuit. 12 – Open or short in ambient temperature sensor circuit. 13 – Open or short in evaporator temperature sensor circuit. 14 – Open or short in water temperature sensor circuit. 21* – Open or short in solar sensor circuit. 22* – Compressor motor locked. And/or, open or short in compressor lock sensor circuit. 31 – Open or short in air mix damper position sensor circuit. 32 – Open or short in air inlet damper position sensor circuit. 33 – Open in air mix damper position sensor circuit. Or, open or short in air mix servomotor circuit. Or, air mix servomotor locked. 34 – Open in air inlet damper position sensor circuit. Or, open or short in air inlet sensor servomotor circuit. Or, air inlet servomotor locked. * – These are detected only when they are the current troubles. Other codes detect both current trouble (beep) and past trouble (no beep). A/C indicator light blinks – This means your A/C compressor is locked. It’s happened to me before and I needed a new (rebuilt) compressor installed. 4) Once you’ve read any codes you can proceed to performing an actuator check by pressing the REC button. This will start a check of different combinations for the system starting with code 20 and moving up to 29. To cancel this or the previous diagnostic modes simply press the OFF button.

2005 Ford F-Super Duty 250-550 Auxiliary Brake System/ Trailer Brake Control (TBC) Module Repair Manual

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connected to the vehicle, the TBC module will enter a “sleep mode” but still continue to send a PWM voltage signal to the trailer tow connector every 4 seconds to detect when a trailer is connected. When the ignition key is in the RUN position and the module is in sleep mode, pressing a gain button or sliding the manual switch will cause the module to “wake up”. If a trailer is not connected to the vehicle, the display should prove out for 3 seconds, then the trailer icon should illuminate red and the IC message center should display TRAILER DISCONNECTED or CHECK TRAILER. If a trailer is connected to the vehicle, the display should prove out for 3 seconds and then the trailer icon should illuminate green. Inspection and Verification NOTE: A trailer brake emulator tool is available to verify that the TBC module and vehicle wiring are functioning correctly. 1. Verify the TBC system is correctly installed by checking that the vehicle is equipped with a brake pressure transducer on the master cylinder. If the brake pressure transducer is not present, then the TBC system has been erroneously installed. 2. Verify the customer concern. 3. NOTE: The TBC does not function with electric-over-hydraulic or surge trailer brake types. Verify that the trailer brakes are electric-actuated drum type brakes. 4. Verify the stoplamps operate correctly by applying and releasing the brake pedal with the ignition switch in the OFF position and the trailer disconnected. If the stoplamps do not operate correctly, refer to Section 417-01 . If the stoplamps operate correctly, proceed to the next step. 5. Visually inspect for obvious signs of mechanical or electrical damage. Visual Inspection Chart 6. If the cause is not visually evident, connect the scan tool to the data link connector (DLC) and select the vehicle to be tested from the scan tool menu. If the scan tool does not communicate with the vehicle: * check that the program card is correctly installed. * check the connections to the vehicle. * check the ignition switch position. 7. If the scan tool still does not communicate with the vehicle, refer to the scan tool operating manual. 8. Carry out the scan tool data link test. If the scan tool responds with: * CAN, ISO, or UBP circuit fault; all electronic control units no response/not equipped, refer to Section 418-00 . * No response/not equipped for the TBC, GO to Pinpoint Test A . * System passed, retrieve and record the continuous diagnostic trouble codes (DTCs), erase the continuous DTCs, and carry out self-test diagnostics for the TBC and the antilock brake system (ABS) module. 9. If the DTCs retrieved are related to the concern, go to the Trailer Brake Control (TBC) module Diagnostic Trouble Code (DTC) Chart or Anti-Lock Brake System (ABS) Module Diagnostic Trouble Code (DTC) Chart to continue diagnosis. 10. If no DTCs related to the concern are retrieved, GO to Symptom Chart to continue diagnosis. NOTE: Always retrieve the continuous DTCs after running the self-test.