TM-9-2320-365-20-2 LMTV Unit Maintenance Manual M1078 Series - Volume 2 Download
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TM 9-2320-365-20-2 TM 9-2320-365-20-2 TM 9-2320-365-20-2 TM 9-2320-365-20-2 TM 9-2320-365-20-2 2-1874 2-1874 2-1874 2-1874 2-1874 1. NO YES If ECU does not receive a speed signal it cannot activate the overspeed protection system. Do overspeed warning light and overspeed pressure change bolts fail to operate? START Visual inspection KNOWN INFO POSSIBLE PROBLEMS Faulty CTIS cable-speed signal. Faulty cab dashboard wiring harness - speed signal. Faulty cab dashboard wiring harness - LED input to CTIS cable. Faulty CTIS cable - LED input to ECU. Faulty ECU - O.S pressure change function. Faulty overspeed indicator LED. Faulty cab dashboard wiring harness - ground for LED. Faulty cab dashboard wiring harness - power to LED. Faulty CTIS cable power to LED. Faulty ECU - O.S. warning indicator function. TEST OPTIONS REASON FOR QUESTION Circuit breakers OK. Power supplied to CTIS. Speedometer OK. Indicator display lights OK. INITIAL SETUP Equipment Conditions Engine running (TM 9-2320-365-10). Personnel Required (2) References TM 9-4910-571-12&P m6. CTIS OVERSPEED WARNING LIGHT DOES NOT ILLUMINATE AND/OR OVERSPEED PRESSURE CHANGE Tools and Special Tools Tool Kit, Genl Mech (Item 44, Appendix C) Multimeter, Digital (Item 22, Appendix C) Wrench, Torque, 0-200 lb-in. (Item 58, Appendix C) Wrench, Torque, 0-75 lb-in. (Item 86, Appendix B) STE/ICE-R (Item 39, Appendix C) Go to step 6 of this fault.