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Home >> Jeep >> 1996 >> Grand Cherokee Limited, 5.2 Y >> Repair and Diagnosis >> External Pages >> Different car >> Section 3 (Engine Controls - Tests W/Codes - 2.5L Flex Fuel) >> Self-Diagnostic Tests >> Test TC-18A - EGR Solenoid Circuit (DTC 32)

Test TC-18A - EGR Solenoid Circuit (DTC 32)

WARNING: This page is about a different car, the 1994 Plymouth Acclaim and 1994 Dodge Spirit. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: For circuit and connector terminal identification, see CONNECTOR IDENTIFICATION DIRECTORY TABLE  . For wiring diagrams, see WIRING DIAGRAMS  .
  1. If vehicle is not equipped with an Exhaust Gas Recirculation (EGR) valve, this trouble code does not apply. If vehicle is equipped with an EGR valve, using DRB, erase trouble codes.
  2. Using DRB, actuate EGR solenoid. Using DRB, read trouble codes. If DRB displays EGR SOLENOID CIRCUIT, go to step 6). If DRB does not display EGR SOLENOID CIRCUIT, condition required to set trouble code is not present at this time. Go to next step.
  3. The EGR SOLENOID CIRCUIT trouble code sets if EGR solenoid is not in its proper state when monitored by Powertrain Control Module (PCM). Possible causes are: open or shorted EGR solenoid, open EGR solenoid Dark Blue wire, open or shorted EGR solenoid Gray/Yellow wire or failed PCM. Go to next step.
  4. Inspect all related wiring and connectors and repair as necessary. Perform TEST VER-2  . If no problems were found with wiring and connectors, go to next step.
  5. Using DRB, read trouble codes. EGR actuation test should still be running. Wiggle wiring harness from EGR solenoid to PCM. If EGR SOLENOID CIRCUIT trouble code returned, repair wiring harness as necessary. Perform TEST VER-2. If EGR SOLENOID CIRCUIT trouble code did not return, see INACTIVE TROUBLE CODE CONDITION  . Perform TEST VER-2.
  6. Turn ignition off. Disconnect EGR solenoid connector. Turn ignition on. Put DRB in voltmeter mode. Using DRB, check voltage on EGR solenoid connector Dark Blue wire. If voltage is less than 10 volts, repair open in appropriate wire. Perform TEST VER-2.
  7. If voltage is more than 10 volts, turn ignition off. Disconnect Powertrain Control Module (PCM) connector. Using an external ohmmeter, check resistance of Gray/Yellow wire between EGR solenoid connector and PCM connector terminal No. 35. If resistance is more than 5 ohms, repair open in Gray/Yellow wire. Perform TEST VER-2.
  8. If resistance is less than 5 ohms, put DRB in ohmmeter mode. Using DRB, check resistance of PCM connector terminal No. 35 (Gray/Yellow wire). If resistance is less than 5 ohms, repair short to ground in Gray/Yellow wire. Perform TEST VER-2  .
  9. If resistance is more than 5 ohms, reconnect EGR solenoid connector. Turn ignition on. Put DRB in voltmeter mode, Using DRB, check voltage on PCM connector terminal No. 35 (Gray/Yellow wire). If voltage is less than 10 volts, replace EGR solenoid. Perform TEST VER-2. If voltage is more than 10 volts, replace PCM. Perform TEST VER-2.
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