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Home >> Eagle >> 1995 >> Summit DL >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes - OBD-I (2.4L) >> Diagnostic Tests >> Code 43: EGR Temperature Sensor
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Code 43: EGR Temperature Sensor

NOTE: For component terminal identification, see TERMINAL IDENTIFICATION  in this article. For appropriate WIRING DIAGRAMS, see WIRING DIAGRAMS  section.
  1. If using scan tool, go to step 2). Remove EGR temperature sensor from intake manifold. Submerge temperature sensing portion of EGR temperature sensor in hot water. Using DVOM, check resistance across sensor terminals. Resistance should be 60,000-83,000 ohms at 122°F (50°C), 11,000-14,000 at 212°F (100°C). If resistance is not as specified, replace EGR temperature sensor. If resistance is as specified, go to step 3).
  2. Warm engine to operating temperature. Allow engine to idle for 2 minutes. Squeeze green-striped hose between EGR valve and EGR solenoid. Using scan tool, read EGR temperature sensor temperature. At 700-750 RPM, scan tool should read 70°F (158°C) or less on Expo, Galant and Summit Wagon. On all other models, scan tool should read 212°F (100°C) or less. At 3500-4000 RPM, scan tool should read 158°F (70°C) or more on Expo and Summit Wagon. On all other models, scan tool should read 248°F (120°C) or more. If reading is not as specified, replace EGR temperature sensor. If reading is as specified, go to next step.
  3. Disconnect EGR temperature sensor connector. Using DVOM, check continuity between chassis ground and EGR temperature sensor terminal No. 1. If continuity does not exist, repair wiring harness as necessary. If continuity exists, go to next step.
  4. On Galant, go to next step. On all other models, with EGR temperature sensor disconnected, disconnect PCM connector. Check for continuity between EGR temperature sensor connector terminal No. 2 and PCM connector terminal No. 53. If continuity does not exist, repair wiring harness as necessary. If continuity exists, go to next step.
  5. On all models, with EGR temperature sensor connector and PCM connector disconnected, turn ignition switch to ON position. Check voltage between chassis ground and EGR connector terminal No. 2 on Galant (terminal No. 1 on all other models). Voltage should be 3.3-4.7 volts. If voltage is not as specified, replace PCM. 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 - 2.4L article.
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