GM 12614973 Sensor Assembly, Map

The MAP sensor is placed on the top of the intake manifold close to the throttle body. It is specifically on top of the throttle body. It can be disconnected by unplugging electrical connector and removing bolts that hold an accelerator cable bracket from a throttle body, and pulling it off a throttle body. The negative battery terminal cables must be disconnected before you begin. Thereafter, disconnect MAP sensor connector. Then, remove accelerator cable bracket bolts and lift up the bracket. At last, take out MAP sensor from the throttle body. Installation is just the reverse order of this process for removal.

The MAP sensor is placed on the top of the intake manifold close to the throttle body. It is specifically on top of the throttle body. It can be disconnected by unplugging electrical connector and removing bolts that hold an accelerator cable bracket from a throttle body, and pulling it off a throttle body. The negative battery terminal cables must be disconnected before you begin. Thereafter, disconnect MAP sensor connector. Then, remove accelerator cable bracket bolts and lift up the bracket. At last, take out MAP sensor from the throttle body. Installation is just the reverse order of this process for removal.

The Manifold Absolute Pressure (MAP) sensor monitors the intake manifold pressure changes resulting from changes in engine load and speed and converts the information into a voltage output. The ECM/PCM receives information as a varying voltage signal from closed throttle (high vacuum) to wide open throttle (low vacuum). The ECM/PCM uses the MAP sensor to control fuel delivery and ignition timing. Performing the following test will set a diagnostic trouble code and illuminate the Service Engine Soon light. Clear the diagnostic trouble code after performing the tests and making the necessary repairs. The MAP sensor is located on the upper intake manifold plenum. Check the terminals in the connector and the wires leading to the sensor for looseness and breaks. Repair as required. Before checking the MAP sensor, check the voltage supply and ground circuits from the ECM/PCM. Disconnect the electrical connector from the MAP sensor and connect the positive lead of a voltmeter to the gray wire terminal (and the negative lead to the orange/black or black wire terminal at the harness connector. Turn the ignition key On-the voltage should read approximately 5.0 volts. If the voltage is incorrect, check the wiring from the MAP sensor to the ECM/PCM. If the circuits are good, have the ECM/PCM checked at a dealer service department or other properly equipped repair facility. To check the MAP sensor operation, reconnect the connector to the MAP sensor and using a suitable probe, back probe the light green wire terminal of the MAP sensor connector. Connect the positive lead of a voltmeter to the probe and the negative lead to a good engine ground point. Turn the ignition key On-with the engine not running the voltage should read 4.0 to 5.0 volts. Start the engine and allow it to idle. The voltage should decrease to approximately 0.5 to 2.0 volts. If the test results are incorrect, replace the MAP sensor. Access the MAP sensor. On TBI systems, remove the air cleaner assembly. On Central SFI systems, remove the intake air duct and resonator from the throttle body. On MPFI systems, remove the upper intake manifold from the engine. Disconnect the electrical connector from the MAP sensor. Remove the retaining bolts and draw the MAP sensor. Replace the MAP sensor seal in the upper intake manifold, if equipped. Installation is the reverse of removal.

Various engine sensors and components have checking procedures,the engine coolant temperature (ECT) sensor is a thermistor that changes resistance with temperature, and a failure in the circuit can cause trouble codes. The resistance should be measured when cold and warm while ensuring reference voltage from PCM is around 5.0 volts for the verification. Manifold Absolute Pressure (MAP) Sensor monitors changes in intake manifold pressure then varies its voltage output accordingly. Look at the reference voltage and signal voltage with the ignition on and engine off, and observe voltage changes as the engine's vacuum changes. Intake Air Temperature (IAT) Sensor acts as a thermistor where you can measure its resistance at different temperatures to make sure it changes as expected. Also, use a scan tool to monitor the IAT sensor for performance. The oxygen sensor in exhaust detects oxygen content which you can check its millivolt signal while warming up your engine. Check whether the oxygen sensor heater has correct voltage or not. Vehicle Speed Sensor (VSS) provides speed data to PCM which can be checked for reference voltage. Depending on the type of engine, Camshaft Sensor and Crankshaft Sensor should be checked for resistance and proper signal output. Finally, Knock Sensors detect engine knock which should be checked for reference voltage and resistance. If any component fails these checks, replacement may be necessary.

With the ignition off, disconnect the MAP sensor's electrical connection, pull out the mounting bolt, and start work on these 2005 and later models with 2.0L supercharged, 2.2L, or 2.4L engines. The MAP sensor is located on the intake manifold behind the throttle body for 2.2L and 2.4L engines, while 2.0L engines have two sensors: At the right end of your intake manifold is the TMAP sensor, and high on top of the left supercharger is the SCIP sensor. To take out the throttle body, you must make sure you can access the sensor. To detach the sensor thanks to the easy-to-remove locking clip, push the two ends together, pull it free, and take the sensor off. To get access to the 2.0L turbo engine MAP sensor, remove its electrical connector from the intake manifold above the throttle body. Then take out the mounting screws and lift off the sensor. To install the sensor correctly, you need to replace it entirely on 2005 and later models when the sealing damage shows up. The installation process runs in the opposite direction from removal.

First, to remove the MAP sensor on V6 models, disconnect the electrical connector and pull the sensor from the intake manifold. Next, replace the sealing grommet if necessary, and use oil on the grommet during installation. For a V8 model, remove the intake manifold cover, disconnect the electrical connector, and remove the sensor.

Various engine sensors and components have checking procedures,the engine coolant temperature (ECT) sensor is a thermistor that changes resistance with temperature, and a failure in the circuit can cause trouble codes. The resistance should be measured when cold and warm while ensuring reference voltage from PCM is around 5.0 volts for the verification. Manifold Absolute Pressure (MAP) Sensor monitors changes in intake manifold pressure then varies its voltage output accordingly. Look at the reference voltage and signal voltage with the ignition on and engine off, and observe voltage changes as the engine's vacuum changes. Intake Air Temperature (IAT) Sensor acts as a thermistor where you can measure its resistance at different temperatures to make sure it changes as expected. Also, use a scan tool to monitor the IAT sensor for performance. The oxygen sensor in exhaust detects oxygen content which you can check its millivolt signal while warming up your engine. Check whether the oxygen sensor heater has correct voltage or not. Vehicle Speed Sensor (VSS) provides speed data to PCM which can be checked for reference voltage. Depending on the type of engine, Camshaft Sensor and Crankshaft Sensor should be checked for resistance and proper signal output. Finally, Knock Sensors detect engine knock which should be checked for reference voltage and resistance. If any component fails these checks, replacement may be necessary.

Various engine sensors and components have checking procedures,the engine coolant temperature (ECT) sensor is a thermistor that changes resistance with temperature, and a failure in the circuit can cause trouble codes. The resistance should be measured when cold and warm while ensuring reference voltage from PCM is around 5.0 volts for the verification. Manifold Absolute Pressure (MAP) Sensor monitors changes in intake manifold pressure then varies its voltage output accordingly. Look at the reference voltage and signal voltage with the ignition on and engine off, and observe voltage changes as the engine's vacuum changes. Intake Air Temperature (IAT) Sensor acts as a thermistor where you can measure its resistance at different temperatures to make sure it changes as expected. Also, use a scan tool to monitor the IAT sensor for performance. The oxygen sensor in exhaust detects oxygen content which you can check its millivolt signal while warming up your engine. Check whether the oxygen sensor heater has correct voltage or not. Vehicle Speed Sensor (VSS) provides speed data to PCM which can be checked for reference voltage. Depending on the type of engine, Camshaft Sensor and Crankshaft Sensor should be checked for resistance and proper signal output. Finally, Knock Sensors detect engine knock which should be checked for reference voltage and resistance. If any component fails these checks, replacement may be necessary.

First, to remove the MAP sensor on V6 models, disconnect the electrical connector and pull the sensor from the intake manifold. Next, replace the sealing grommet if necessary, and use oil on the grommet during installation. For a V8 model, remove the intake manifold cover, disconnect the electrical connector, and remove the sensor.

Various engine sensors and components have checking procedures,the engine coolant temperature (ECT) sensor is a thermistor that changes resistance with temperature, and a failure in the circuit can cause trouble codes. The resistance should be measured when cold and warm while ensuring reference voltage from PCM is around 5.0 volts for the verification. Manifold Absolute Pressure (MAP) Sensor monitors changes in intake manifold pressure then varies its voltage output accordingly. Look at the reference voltage and signal voltage with the ignition on and engine off, and observe voltage changes as the engine's vacuum changes. Intake Air Temperature (IAT) Sensor acts as a thermistor where you can measure its resistance at different temperatures to make sure it changes as expected. Also, use a scan tool to monitor the IAT sensor for performance. The oxygen sensor in exhaust detects oxygen content which you can check its millivolt signal while warming up your engine. Check whether the oxygen sensor heater has correct voltage or not. Vehicle Speed Sensor (VSS) provides speed data to PCM which can be checked for reference voltage. Depending on the type of engine, Camshaft Sensor and Crankshaft Sensor should be checked for resistance and proper signal output. Finally, Knock Sensors detect engine knock which should be checked for reference voltage and resistance. If any component fails these checks, replacement may be necessary.

To remove the 2.2L and 2.4L engines, start by turning the ignition key to the OFF position. Then, disconnect the MAP sensor electrical connector and remove the mounting bolt. The MAP sensor is located on the intake manifold, just behind the throttle body on 2.2L and 2.4L engines.

If the sealing grommet is damaged, it should be inspected and replaced if necessary. Additionally, during installation, it is recommended to use clean engine oil on the grommet to prevent tearing.

Insert a pair of small screwdrivers between each side of the MAP sensor and its mounting bracket and carefully pry the sensor loose.

The MAP sensor monitors changes in intake manifold pressure resulting from changes in engine load and speed. It converts this information into a voltage output that the ECM/PCM uses to control fuel delivery and ignition timing.

The MAP sensor monitors intake manifold pressure changes resulting from changes in engine load and speed and converts the information into a voltage output.

To remove the MAP sensor on a V6 model, you need to disconnect the electrical connector and then pull the sensor straight up out of the intake manifold.

If the sealing grommet is damaged, it should be inspected and replaced if necessary. Additionally, during installation, it is recommended to use clean engine oil on the grommet to prevent tearing.

If the sealing grommet is damaged, it should be inspected and replaced if necessary. Additionally, during installation, it is recommended to use clean engine oil on the grommet to prevent tearing.