TM-9-2320-361-24-1 Field Maintenance Manual Volume 1 for M44A2 Series Trucks
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TM 9-2320-361-24-1 0017 00 0017 00-8 SIMPLIFIED TEST EQUIPMENT FOR INTERNAL COMBUSTION ENGINE—REPROGRAMMABLE (STE/ICE-R) GO CHAIN TROUBLESHOOTING (Contd) Table 2. STE/ICE-R Go Chain Test (Contd). TEST NO. TEST 72 STARTER CURRENT FIRST PEAK • Turn off all vehicle electrical power. • Dial 72 into TEST SELECT switches. • Press and hold TEST until CAL messages appears on display. • Release TEST. • Wait for offset value to appear. • Is offset value within the limits of –225 to + 225? PROMPTING MESSAGE NOTE Test GO1, VTM Connections and Checkout, must be performed before running any other STE/ICE-R test. NO YES NOTE While cranking the engine with bad or discharged batteries, it is possible for the VTM to lose power and come on again after the cranking has stopped, displaying four dashes. If this ever occurs, immediately proceed to the Battery Test, NG 81 (WP 0018 00). • When GO appears, shut off fuel and press starter switch until OFF or an error message is displayed on VTM. MEASURE STARTER CURRENT–FIRST PEAK: • Press TEST • Wait for prompting message GO to appear on the display. 2 PROMPTING MESSAGE CONNECTION CURRENT PROBE-DO OFFSET • Connect P1 of transducer cable W4 to J2 on VTM. • Connect P2 of cable W4 to the connector on current probe. • Clamp current probe around positive battery cable connected to starter. • Point arrow on the probe toward the starter. • Crank engine for several cycles with fuel shut off. 1 • Proceed to TM 9-4910-571-12&P. NOTE If engine does not crank, go to test NG 20 (WP 0018 00). FIRST PEAK TEST G02 TK MODE