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Symptom: *REAR BLOWER MOTOR INOPERATIVE - MTC POSSIBLE CAUSES FRONT CONTROL MODULE (FCM) DTC(S) PRESENT IPM FUSE #12 FUSED REAR BLOWER MOTOR RELAY OUTPUT CIRCUIT SHORTED TO GROUND BLOWER MOTOR GROUND CIRCUIT OPEN A/C - HEATER CONTROL MODULE CHECK FOR POWER TO REAR BLOWER MOTOR BLOWER MOTOR REAR BLOWER HIGH SPEED CIRCUIT OPEN REAR BLOWER MOTOR HIGH CIRCUIT OPEN REAR BLOWER MOTOR RESISTOR BLOCK IPM - OPEN CIRCUIT IPM - OPEN CIRCUIT REAR BLOWER MOTOR RELAY IPM - OPEN CIRCUIT FUSED REAR BLOWER MOTOR RELAY OUTPUT CIRCUIT OPEN TEST ACTION APPLICABILITY 1 With the DRBIII t in Front Control Module, read the active DTCs. Are any active FCM DTCs present? All Yes → For FCM DTCs related to the blower relay circuits, refer to the Heating & A/C catagory. For all other FCM DTCs, refer to the No → Go To 2 2 Turn the ignition off. All Yes → Go To 3 No → Go To 5 579 HEATING & A/C |