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Home >> Ford >> 1983 >> Thunderbird Base, 2.3 W >> Repair and Diagnosis >> Body & Frame >> Door Locks >> Keyless Entry System >> Testing >> Pinpoint Test A Automatic Locking System >> Test Procedures
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Test Procedures

  1. Check continuity between ground and pin 2 of module Brown connector. If continuity is present, go to next step. If not, repair circuit 57.
  2. With ignition off, disconnect Brown connector. No continuity should be present between pins 9 and 2 when driver's seat is unoccupied. If no continuity, go to step 4). If continuity is found, go to next step.
  3. Disconnect driver's seat and check for continuity between pin 9 of Brown connector and ground. If continuity, repair wiring and repeat Quick Test. If no continuity, replace seat switch and retest.
  4. Have someone sit in driver's seat. Check continuity between pins 2 and 9 in Brown connector. If continuity is found, go to step 6). If not, go to next step.
  5. With driver's seat occupied, check for continuity between Brown connector pin 9 and driver's seat switch connector. If continuity is found, replace seat switch. If no continuity, repair broken wiring. Retest for either situation.
  6. Check voltage between pins 2 and 13 in Brown connector. If more than 10 volts, go to next step. If less than 10 volts, check power circuits 54B and 54C.
  7. Check that the dome lights operate when each door jam courtesy light switch is operated. If so, go to next step. If not, repair switch or wiring and retest.
  8. Disconnect module Green connector. With all doors closed, check voltage at pin 12 of connector. If no voltage is present, go to next step. If voltage is present, replace door switch or wire that is shorted to battery voltage.
  9. Repeat this test for each door: Open door and check voltage at Green connector pin 12. If readings indicate more than 10 volts with any door open, go to next step. If not, service circuit 53 or switches and retest.
  10. With ignition off, check voltage at pin 8 of Brown connector. If no voltage is present, go to next step. If voltage is measured, repair or replace ignition switch.
  11. Turn ignition on, then check for voltage at Brown connector pin 8. If 10 or more volts are measured, go to step 13). If less than 10 volts, go to next step.
  12. Turn ignition off, then check for short to ground in wire from pin 8 of Brown connector, and check for continuity between pin 8 and circuit 194B at ignition switch. If wiring is okay, go to next step, otherwise, service wiring or switch and retest.
  13. Turn ignition on. Check for voltage at pin 10 of Brown connector. At least 10 volts should be present with transmission selector in "R", and no volts in any other position. If voltage readings are correct, replace module and retest. If voltage is present in a position other than "R" go to next step.
  14. Test operation of Back-Up Light switch and adjustment. Repair wiring or replace switch as necessary, then retest.
  15. Connect ohmmeter between Brown connector pin 14 and ground. Lift outside door handle to open door latch, observe ohmmeter, then close latch with screwdriver. Resistance should be greater than 1,000 ohms with latch open. If so, replace module and retest. If not, check door switch and retest.
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