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Symptom: P0622-GENERATOR FIELD NOT SWITCHING PROPERLY When Monitored and Set Condition: P0622-GENERATOR FIELD NOT SWITCHING PROPERLY When Monitored: With the ignition key on and the engine running. Set Condition: When the PCM tries to regulate the generator field with no result during monitoring. POSSIBLE CAUSES GENERATOR FIELD PERFORMANCE (K125) GEN FIELD SOURCE CIRCUIT OPEN (K20) GEN FIELD CONTROL CIRCUIT OPEN (K20) GEN FIELD CONTROL CIRCUIT SHORTED TO GROUND GENERATOR PCM TEST ACTION APPLICABILITY 1 Ignition on, engine not running. t, actuate the Generator Field Driver. Does the test light blink? All Yes → Refer to the INTERMITTENT CONDITION Symptom (Diagnos- tic Procedure). No → Go To 2 2 Ignition on, engine not running. t actuate the Generator Field Driver. Is the voltage above 10.0 volts? All Yes → Go To 3 No → Repair the open in the (K125) Gen Field Source circuit. Perform POWERTRAIN VERIFICATION TEST VER - 3. 131 DRIVEABILITY - GAS |