Acura 37880-PE2-013 Air Temperature Sensor Assembly

When the ignition is on, unplug the Intake Manifold Temperature Sensor connected to the intake manifold. Place the sensor's terminals at the opposite ends of the ohmmeter probe and check resistance with the engine cold. Attach the power cable back to the sensor, crank your engine, and run it at typical working temperature. When you turn your ignition key to the ON position but don't start the engine, check the sensor's electrical connector (red/yellow wire). Its supply voltage should be around 5.0 volts. If you find no power coming from the red/yellow wire at the PCM, go back along the wire to see if there's a damaged section or loose connection. If everything electrical checks out, install another IAT sensor to resolve the test problem. If your IAT sensor tests properly but the problem continues, take your car to a certified repair shop or dealer service center to check the computer. You'll need to do three basic steps to change the sensor: disconnect the cable connected to the IAT sensor, unscrew the component that holds it to the intake, and pull out the IAT sensor. Installation is the reverse of removal.

All Legend models and 1986 and 1987 Integra models require checking the oxygen sensor by turning the ignition switch to OFF, removing the ALTERNATOR SENSE fuse for 10 seconds on all Legends or the HAZARD fuse in the main fusebox on Integra, checking fuel pressure, warming the engine, blocking the rear wheels, raising the vehicle, locating the oxygen sensor, starting the engine, disconnecting the wire harness, raising engine speed, measuring voltage with a digital voltmeter, replacing the sensor if test results are incorrect, or checking the wire harness if results are correct. The MAP sensor diagnosis requires checking the vacuum hose and electrical connector followed by turning off the ignition switch and removing the correct fuse to warm up the engine and disconnect the electrical connector before inserting a test harness and measuring voltage as a replacement MAP sensor is needed if voltage checks pass otherwise seek professional diagnosis of the circuit. The crank angle sensor employs two sensors which reside at the right end of the front cylinder head and within the distributor for Legend models while requiring measurement of CRANK circuit resistance and CYL circuit continuity before deciding whether to replace the sensor or to get the system diagnosed when correct measurements are obtained. To replace this sensor one must remove the cruise control actuator together with the timing belt cover and timing belt and bolts before inserting a new sensor. Prior to dealing with the throttle angle sensor maintenance you need to shut off the ignition and untie the correct fuse then heat your engine before disconnecting the electrical connector and checking the voltage output before deciding if you should replace or check the circuit depending on test results. The replacement process begins by disconnecting the electrical connector followed by screw removal. After inserting the new switch and reattaching the electrical connector the task completes. To test the intake air temperature sensor start by disconnecting its electrical connector then measure its resistance before replacing it with a new unit or seeking further vehicle assessment if its condition is acceptable. The replacement procedure requires letting go of the electrical connector while removing screws before performing the removal steps in reverse order.