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Symptom: P0622-GENERATOR FIELD CONTROL CIRCUIT When Monitored and Set Condition: P0622-GENERATOR FIELD CONTROL CIRCUIT When Monitored: With the ignition on. Engine running. Set Condition: When the PCM tries to regulate the generator field with no result during monitoring. One Trip Fault. POSSIBLE CAUSES GOOD TRIP EQUAL TO ZERO GENERATOR OPERATION (Z1) GEN FIELD GROUND CIRCUIT OPEN (K20) GEN FIELD CONTROL CIRCUIT SHORTED TO BATTERY VOLTAGE (K20) GEN FIELD CONTROL CIRCUIT SHORTED TO GROUND (K20) GEN FIELD CONTROL CIRCUIT OPEN PCM TEST ACTION APPLICABILITY 1 Ignition on, engine not running. t, read DTCs and record the related Freeze Frame data. Is the Good Trip Counter displayed and equal to zero? All Yes → Refer to the INTERMITTENT CONDITION symptom in the Driveability category. No → Go To 2 2 Turn the ignition off. t, actuate the Generator Field Driver circuit. Does the test light illuminate brightly and flash on and off? All Yes → Replace the Generator. Perform POWERTRAIN VERIFICATION TEST VER - 3 - NGC. No → Go To 3 237 DRIVEABILITY - NGC |