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ATC-56 TROUBLE DIAGNOSIS LAN System Circuit EJS0030C SYMPTOM: Mode door motor, intake door motor and/or air mix door motor does not operate normally. DIAGNOSTIC PROCEDURE FOR LAN SYSTEM CIRCUIT 1. CHECK POWER SUPPLY FOR AUTO AMP. OK or NG OK >> GO TO 2. NG >> Replace auto amp. 2. CHECK SIGNAL FOR AUTO AMP. Confirm A/C LAN signal using an oscilloscope. OK or NG OK >> GO TO 3. NG >> Replace auto amp. RJIA1326E Terminal Voltage (+) (-) Auto amp. connec- tor Terminal No. (Wire color) M111 21 (G/Y) Ground Approx. 12V RJIA0273E Terminal Voltage (+) (-) Auto amp. connector Terminal No. (Wire color) M110 5 (R/Y) Ground HAK0652D |