AC–26 AIR CONDITIONING SYSTEM – TROUBLESHOOTING MATRIX CHART OF PROBLEM SYMPTOMS If a normal code is displayed during the diagnostic sensor check but the trouble still occurs, perform trouble- shooting for each problem symptom, checking the circuits for each symptom in the order given in the table below (Proceed to the page given for each circuit). See page AC-28 AC-30 AC-32 AC-34 AC-36 AC-38 AC-40 AC-42 AC-44 AC-46 AC-48 AC-50 Suspect Area Room temp. sensor circuit Ambient temp. sensor circuit Evaporator temp. sensor circuit Engine coolant temp. sensor circuit Solar sensor circuit Compressor lock sensor circuit Pressure switch circuit Air mix damper position sensor circuit Air mix damper control servo motor circuit Air inlet damper control servo motor circuit Air outlet damper position sensor circuit Air outlet damper control servo motor circuit Symptom Whole functions of the A/C system does not operate. Air Flow Control No blower operation 3 No blower control Insufficient air flow Temperature Control No cool air comes out 9 10 11 12 6 5 7 8 No warm air comes out 4 5 6 2 3 Output air is warmer or colder than the set temperature or response is slow 7 8 9 10 6 11 12 13 No temperature control (only Max. cool or Max. warm) 2 3 4 5 No air inlet control 1 No air outlet control 1 2 Engine idle up does not occur, or is continuous Blinking of A/C indicator 2 Trouble code not recorded. Set mode is cleared when IG switch is turned off.