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Test TC-7B - No Vehicle Speed Sensor Signal

WARNING: This page is about a different car, the 1994 Plymouth Sundance, 1994 Plymouth Acclaim, 1994 Dodge Spirit, 1994 Dodge Shadow, and 1994 Chrysler LeBaron. 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  . For wiring diagrams, see WIRING DIAGRAMS  .
  1. Using DRB, read Electronic Automatic Transmission (EATX) trouble codes. If any EATX trouble codes (Codes 50-58) are present, repair transmission as required. See lemon-25(R) 1993-94 DOMESTIC CAR, LIGHT TRUCKS & VANS TRANSMISSION SERVICE & REPAIR manual.
  2. If EATX trouble codes are not present, turn ignition off. Disconnect Transmission Control Module (TCM) connector. Turn ignition on. Place DRB in voltmeter mode. Using DRB, check voltage at TCM connector terminal No. 58 White/Orange wire.
  3. If voltage is more than 4 volts, go to step 7). If voltage is less than 4 volts, turn ignition off. Disconnect Powertrain Control Module (PCM) connector. Inspect PCM connector and repair as required. Perform TEST VER-2  . If PCM connector is okay, go to next step.
  4. Using an external ohmmeter, check resistance of White/Orange wire between PCM connector terminal No. 47 and TCM connector terminal No. 58.
  5. If resistance is more than 5 ohms, repair open in White/Orange wire. Perform TEST VER-2. If resistance is less than 5 ohms, place DRB in ohmmeter mode. Using DRB, check resistance of PCM connector terminal No. 47 White/Orange wire.
  6. If resistance is less than 5 ohms, repair short to ground in White/Orange wire. Perform TEST VER-2. If resistance is more than 5 ohms, replace PCM. Perform TEST VER-2.
  7. Using DRB, read vehicle speed MPH value. Connect one end of a jumper wire to TCM connector terminal No. 58 (White/Orange wire). While observing DRB vehicle speed MPH display, tap other end of jumper wire to ground. If DRB displays vehicle speed more than 0 MPH, replace TCM. Perform TEST VER-2  . If DRB displays vehicle speed of 0 MPH or less, turn ignition off.
  8. Disconnect PCM connector. Using an external ohmmeter, check resistance of White/Orange wire between PCM connector terminal No. 47 and TCM connector terminal No. 58.
  9. If resistance is less than 5 ohms, replace PCM. Perform TEST VER-2. If it is more than 5 ohms, repair open in White/Orange wire. Perform TEST VER-2.
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