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Test 27A - T41 Sense Circuit

NOTE: Perform TEST 5A  before proceeding with this test. For connector terminal identification, see CONNECTOR IDENTIFICATION  . For wiring diagrams, see WIRING DIAGRAMS  . Perform VERIFICATION TEST VER-1A  after each repair.
CAUTION: Always turn ignition switch to OFF position prior to disconnecting or connecting any module connector.
  1. Disconnect Park/Neutral Position (PNP) switch connector. Disconnect Transmission Control Module (TCM) connector. Use scan tool in voltmeter mode. Measure voltage at terminal No. 2 of PNP connector. If voltage is not present, go to next step. If voltage is present, repair PNP sense circuit for short to battery.
  2. Use external ohmmeter. On F24S and FJ22 models, measure resistance between terminal No. 2 of PNP connector and terminal No. 1 of TCM connector. On all other models, measure resistance between terminal No. 2 of PNP connector and terminal No. 41 of TCM connector. On all models, if resistance is 5 ohms or more, go to next step. If resistance is less than 5 ohms, repair open PNP switch sense circuit.
  3. Connect PNP switch connector. Move shift selector in "P". Use scan tool in ohmmeter mode. On F24S and FJ22 models, measure resistance at terminal No. 1 of TCM connector. On all other models, measure resistance at terminal No. 41 of TCM connector. On all models, if resistance is 50 ohms or more, replace TCM. If resistance is less than 50 ohms, replace PNP switch.
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