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*NO RESPONSE FROM RADIO (CONTINUED) 5. (D25) PCI BUS CIRCUIT OPEN Use Scope input cable CH7058, Cable to Probe adapter CH7062, and Connect the scope input cable to the channel one connector on the With the DRBIII T select Pep Module Tools. Select lab scope. Select Live Data. Select 12 volt square wave. Press F2 for Scope. Press F2 and use the down arrow to set voltage range to 20 volts. Connect the Black lead to the chassis ground. Connect the Red lead Observe the voltage display on the DRB Lab Scope. Does the voltage pulse from 0 to approximately 7.5 volts? Yes >> Replace the Radio in accordance with the service information. Perform BODY VERIFICATION TEST - VER 1. (Refer to BODY VERIFICATION TEST - VER 1.) No >> Repair the (D25) PCI Bus circuit for an open. Perform BODY VERIFICATION TEST - VER 1. (Refer to BODY VERIFICATION TEST - VER 1.) 8E - 76 ELECTRONIC CONTROL MODULES - ELECTRICAL DIAGNOSTICS DR/DH |