TM-9-2320-387-24 HMMWV Direct Support & General Support Maintenance Manual Volume 1 Download
Page 454 of 1205
TM 9-2320-387-24-l TRANSMISSION SYSTEM DIAGNOSTIC FLOWCHART NOTE The following diagnostics will help isolate and repair problem circuits, wires, pins, connectors, sensors, circuit breakers, and solenoids. For repair of all wiring, refer to para. 4-80. Check connector pins before inserting probes. Jl CABLE DIAGNOSTICS CHART Jl Voltage Measurements With Ignition ON, Engine OFF, and Glow Plug Controller Disconnected. Refer to Para. 4-33. CKT NOM. CKT# PIN TO PIN EXP READ IGN PWR 291 D i a or b 12VDC Battery Pos 537D Z a or b 12VDC Trans Lp 657A U’ a or b LED Lights Brake SW 8108 W a or b 12V (Brake OFF) Brake SW 8108 W aorb 0 (Brake ON) Jumper wire from U to a or b. Reconnect Glow Plug Controller. Refer to Para. 4-33. Jl Voltage Measurement With Ignition ON, Engine ON, Transmission in PARK. CKT NOM. CKT# PIN TO PIN EXP READ Engine rpm 349A h c or p 0.3 volt min @I idle Press SW A 765A Press SW B 763A Press SW C 764A a or b a or b a or b Open wire OTO 1 ohm Open wire Jl - 2-402