TM 9-2320-366-34-1Change 1 2-91WARNINGCAUTIONLoose or dirty connectors may causeintermittent loss of power to transmissionECU and diagnostic codes to be logged.Ensure that all connectors are clean and tightbefore performing troubleshooting. Failure tocomply may result in incorrect test results.Use care when testing electrical connectors.Do not damage connector pins or socketswith multimeter probes. Failure to complymay result in damage to equipment.NOTEInspect connector pins/sockets for damage,corrosion, and serviceability. Check thatconnector pins are not pushed back andare capable of making good contact.CONTINUITY TEST(1) Remove two screws and washers from front grille.(2) Remove screw and washer from front grille.(3) Remove front grille from cab.(4) Disconnect connector P119 fromconnector J119.(5) Disconnect external wiring harness 31-pinfrom adapter cable 31-pin connector.(6) Set multimeter to ohms.(7) Connect positive (+) probe of multimeter to P119-p.(8) Connect negative (-) probe of multimeterto external wiring harness 31-pinconnector pin V and note reading on multimeter.(9) If continuity is not present, replace transmission external wiring harness (para 6-7).(10) Connect positive (+) probe of multimeterto connector P119-p.Wear appropriate eye protection when workingunder vehicle due to the possibility of fallingdebris. Failure to comply may result in injury to personnel.Ensure exhaust system is cool before performingtroubleshooting. Failure to comply may result ininjury to personnel.CONTINUITY TEST (Cont)(11) Connect negative (-) probe of multimeterto all other pins in connector P119 and note reading on multimeter.(12) Connect negative (-) probe of multimeter to ground and note reading on multimeter.(13) If continuity is present, transmission external wiring harness is shorted; replace transmission external wiring harness (para 6-7).
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