Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSEAGLE1993SUMMIT WAGON AWD, 1.8 C, STANDARDREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCESYSTEMENGINE CONTROLS - TESTS W/CODESDIAGNOSTIC TESTSCODE 25: BAROMETRIC PRESSURE SENSOR
1993 Eagle Summit Wagon AWD, 1.8 C, Standard
Code 25: Barometric Pressure Sensor
1993 Eagle Summit Wagon AWD, 1.8 C, StandardSECTION Code 25: Barometric Pressure Sensor
NOTE:
Barometric (BARO) pressure sensor is built into airflow sensor. For code 25 test purposes, the airflow sensor will be referred to as the BARO pressure sensor. For component terminal identification, see AIRFLOW SENSOR under TERMINAL IDENTIFICATION
. For wiring diagrams, see WIRING DIAGRAMS
article in this section.
- Manufacturer does not provide component testing procedure without scan tester. Turn ignition switch to ON position. Using scan tester, read sensor pressure. See BARO PRESSURE SENSOR SPECIFICATIONS
table. If pressure is not as specified, replace BARO pressure sensor. If pressure is as specified, go to next step.BARO PRESSURE SENSOR SPECIFICATIONS
Altitude: Ft. (M) Pressure: In. Hg 0 (0) 29.92 1969 (600) 27.95 3937 (1200) 25.98 5906 (1800) 24.02 - Disconnect BARO pressure sensor connector. Using DVOM, check for continuity between chassis ground and specified BARO pressure sensor connector terminal. See BARO PRESSURE SENSOR GROUND CIRCUIT ID
table. If continuity does not exist, repair wiring harness as necessary. If continuity exists, go to next step.BARO PRESSURE SENSOR GROUND CIRCUIT ID
Application Terminal No. All Models 5 - On all models, with BARO pressure sensor disconnected, disconnect ECM connector. Check for continuity between specified ECM connector terminal and BARO pressure sensor connector terminal. See BARO PRESSURE SENSOR TO ECM CIRCUIT ID
table. If continuity does not exist, repair wiring harness as necessary. If continuity exists, go to next step.BARO PRESSURE SENSOR TO ECM CIRCUIT ID
Application BARO Terminal No. ECM Terminal No. All Models 2 65 - With BARO pressure sensor connector and ECM connector disconnected, turn ignition switch to ON position. Check for voltage between chassis ground and BARO pressure sensor connector terminal No. 1. If voltage is not 4.8-5.2 volts, replace ECM. If voltage is as specified, condition required to set code is not present at this time. Test is complete. Intermittent problem may exist. See TESTS W/O CODES article in this section.
- With BARO pressure sensor connector disconnected, turn ignition switch to ON position. Check for voltage between chassis ground and specified BARO pressure sensor connector terminal. See BARO PRESSURE SENSOR POWER SUPPLY CIRCUIT ID
table. If voltage is not 4.8-5.2 volts, repair wiring harness as necessary. If voltage is as specified, go to next step.BARO PRESSURE SENSOR POWER SUPPLY CIRCUIT ID
Application Terminal No. All Models 1 - With BARO pressure sensor connector and ECM connector disconnected, ground ECM connector terminal No. 16. Using DVOM, check for continuity between chassis ground and specified BARO pressure sensor connector terminal. If continuity does not exist, repair wiring harness as necessary. If continuity exists, condition required to set code is not present at this time. Test is complete. Intermittent problem may exist. See TESTS W/O CODES article in this section.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.