TM-9-2320-366-20-1 MTV Unit Maintenance Manual M1083 Series - Volume 1 Download
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KNOWN INFO TEST OPTIONS REASON FOR QUESTION Is continuity present from terminal lug TL173 to terminal lug TL171? Replace 200 AMP terminal block to reverse polarity relay 12 VDC battery cable (para 20-55). YES Continuity Test or STE/ICE-R Test #91 NO 18. Faulty 200 AMP reverse polarity relay. Faulty 200 AMP terminal block to reverse polarity relay 12 VDC battery cable. Faulty battery to 200 AMP terminal block 12 VDC cable assembly. Circuit breaker CB70 OK. Battery(ies) OK. Cab to chassis ground strap OK. PDP to cab ground cable OK. Shunt OK. Starter to shunt 24 VDC cable OK. Battery to shunt cable assembly OK. Starter to chassis ground cable OK. 200 AMP terminal block OK. 200 AMP terminal block to PDP 12 VDC cable OK. 200 AMP terminal block to reverse polarity relay 12 VDC load cable OK. POSSIBLE PROBLEMS If continuity is not present, 200 AMP terminal block to reverse polarity relay 12 VDC battery cable is faulty. TM 9-2320-366-20-1 2-266.32 Change 1 e3. 12 VDC AND 24 VDC CIRCUITS DO NOT OPERATE (CONT)