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3. EXCESSIVE RESISTANCE IN THE CASE GROUND WARNING: When the engine is operating, do not stand in direct line with the fan. Do not put your hands Warm the engine to operating temperature. NOTE: Make sure all wires are clear of the engine’s moving parts. Is the voltage above 0.1 of a volt? Yes >> Repair the excessive resistance in the Generator Case Ground. Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE) No >> Go To 4 4. GENERATOR OPERATION Turn the ignition off. Disconnect the Generator Field harness connector. Using a 12-volt test light, jump across the Generator Field harness con- Ignition on, engine not running. With a scan tool, actuate the Generator Field Driver. Does the test light illuminate brightly and flash on and off? Yes >> Replace the Generator. Perform the POWERTRAIN VERIFICATION TEST. (Refer No >> Go To 5 5. (K20) GEN FIELD CONTROL CIRCUIT SHORTED TO BATTERY VOLTAGE Turn the ignition off. Disconnect the PCM harness connectors. Ignition on, engine not running. Measure the voltage on the (K20) Gen Field Control circuit in the Gen- Is the voltage above 1.0 volt? Yes >> Repair the short to battery voltage in the (K20) Gen Field Control circuit. Perform the POWERTRAIN VERIFICATION TEST. (Refer No >> Go To 6 9 - 912 ENGINE ELECTRICAL DIAGNOSTICS LX |