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Home >> Jeep >> 1996 >> Grand Cherokee Limited, 5.2 Y >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Diagnosis - 42RE & 44RE & 46RE & 47RE Automatic Transmission (W/O TCM) >> Diagnostic Tests >> Test TC-141B - Governor Pressure Not Equal To Target @ 15-20 Psi

Test TC-141B - Governor Pressure Not Equal To Target @ 15-20 Psi

CAUTION: Always turn ignition switch to OFF position prior to disconnecting or connecting any module connector.
NOTE: Perform TEST TC-141A  before proceeding. For connector terminal identification, see CONNECTOR IDENTIFICATION . For appropriate wiring diagram, see WIRING DIAGRAMS . Perform VERIFICATION TEST VER-1A  after each repair.
  1. Turn ignition off. Install a pressure gauge at governor pressure port. See the appropriate OVERHAUL article. Start engine. With gear selector in Neutral, read gauge pressure. If pressure is zero psi, go to step 4). If pressure is more than zero, go to next step.
  2. Turn engine off. Drain and remove transmission oil pan. Inspect pan for burnt oil and debris. Repair transmission as necessary. If transmission is okay, go to next step.
  3. Remove transmission valve body. Inspect for internal transmission damage. Repair transmission as necessary. If transmission is okay, replace valve body.
  4. Turn engine off. Disconnect transmission solenoid connector. Inspect connector and terminals for damage. Repair connector and terminals as necessary. If connector and terminals are okay, go to next step.
  5. Using an external voltmeter, measure voltage between ground and terminal No. 2 on transmission solenoid connector. If voltage is less than 5 volts, repair 5-volt supply circuit as necessary. If voltage is 5 volts or more, go to next step.
  6. Turn ignition off. Using an external ohmmeter, check resistance between terminal No. 2 on transmission solenoid connector and engine ground. If resistance is 10 ohms or more, repair open sensor ground circuit. If resistance is less than 10 ohms, go to next step.
  7. Connect a jumper wire between terminals No. 3 and 4 on transmission solenoid connector. Turn ignition on. Using scan tool, read governor pressure sensor. If scan tool does not display zero psi, perform TEST TC-141E . If scan tool displays zero psi, go to next step.
  8. Turn ignition off. Drain and remove transmission oil pan. Inspect pan for burnt oil and debris. Repair transmission as necessary. If transmission is okay, go to next step.
  9. Disconnect governor pressure sensor connector. Inspect connector and terminals for damage. Repair connector and terminals as necessary. If connector and terminals are okay, go to next step.
  10. Using an external ohmmeter, measure resistance between terminal "B" on governor pressure sensor connector and terminal No. 4 on transmission solenoid connector. If resistance is 10 ohms or more, repair open governor pressure sensor circuit. If resistance is less than 10 ohms, go to next step.
  11. Check resistance between terminal "D" on governor pressure sensor connector and terminal No. 3 on transmission solenoid connector. If resistance is 10 ohms or more, repair open sensor ground circuit. If resistance is less than 10 ohms, go to next step.
  12. Check resistance between terminal "A"' on governor pressure sensor connector and terminal No. 2 on transmission solenoid connector. If resistance is 10 ohms or more, repair open 5-volt supply circuit. If resistance is less than 10 ohms, replace governor pressure sensor.
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