AC–44 AIR CONDITIONING SYSTEM – TROUBLESHOOTING Blinking Light M2 Air Mix Damper Control Servo Motor Circuit CIRCUIT DESCRIPTION The air mix damper control servo motor is controlled by the A/C amplifier and signals the air mix damper to move to the desired position. Diagnostic Sensor Check Detecting Condition | Trouble Area Air mix damper position sensor value does not change even if A/C amplifier signals the air mix damper control servo motor to operate. • Air mix damper control servo motor • Air mix damper position sensor • Harness or connector between A/C amplifier and A/M damper control servo motor, A/M damper position sensor • A/C amplifier WIRING DIAGRAM HTR Fuse A/C Amplifier R-L 8 A14 IG V 9 V 3 IG1 A13 MH Air Mix Damper Control Servo Motor 2 V R-Y 2 R-Y 1 IG1 A13 MC 1 W-B A J1 A W-B 9 Junction A14 GND Connector NO8777