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TM-9-2320-387-24 HMMWV Direct Support & General Support Maintenance Manual Volume 1 Download

Page 463 of 1205

TM 9-2320-387-24-l DIAGNOSTIC FLOWCHART TRANSMISSION SYSTEM TRANSMISSION OUTPUT SPEED SENSOR (TOSS) CIRCUIT NOTE If reading from Jl diagnostics chart is above limit, perform high resistance - below limit, perform low resistance. HIGH RESISTANCE 497A Check Transmission Output Speed 498A Sensor connector and pins for continuity. 0 YES I Disconnect and check continuity of wire 495A on Jl pin S to transmission output speed connector pin A, and check continuity of wire 498A on Jl pin R to transmission output speed connector pin B. Repair wire 497A, and/or wire 498A (para. 4-80). Check resistance of Transmission Output Speed Sensor and pins A and B (TOSS) 1 Kohm to 2 Kohms R. Replace TOSS (para. 4-47). LOW RESISTANCE Disconnect TOSS and check continuity between pins M and N at Jl . Repair wire 497Al498A (para. 4-80). Replace TOSS ’ (para. 4-47). 2-411