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Manual A/C System Circuit Analyse: The manual A/C is shown as figure13-1. When the ignition switch is at the position of ON, the ACC1 and the 15th line get electricity. The 15th line power to the A20 pin of A/C controller . lower peed djusting esistance The two ends o f blower motor and h igh speed relay contact point (the 3rd、4th ) parallel connected, the high speed relay coil ( the 2nd p in) . The volta ge of the 3 0th line FB13 bl ower relay coil blower motor connect to ground. Then the blo wer motor will run in high speed . lower peed djusting e sistance lower peed djusting esistance lower peed djust ing esistance The A9、A12 pin of A/C controller to the inner/o uter circulation control motor, the control pa nel drive the circulation wind door The A13、A14 pin of A/C controller to the cool/warm control mo tor, the c ontrol panel drive the conne cting bar、 shift lever of The A18、 A1 9 pin of A/C controller to the mode control mo tor, the control panel drive the connecting bar、 shift lever of supplies The ACC1 line supplies power to t he blower relay coil; the blower relay coil g et electricity and the contact closed, the voltage of the 30th s a r . closed → → → → The 3 rd pin of t he b s a r is connectt ed to the B4 pin of A/C controlle r, the 1st pin of b s a r is connec tted to the B2 pin of the A/C controller, the 4th pin of b s a r are connectted to the B3 pin of the A/C controller, the running speed of the blower motor is controlled by A/C are connectted are connectted are connectted connectted Switch The A3 pin o f A/C controller is to the A/C Pressure . Figure13-1 Air Conditioning System Circuit Diagram - + - + - + - A9 A12 A14 A13 A6 A15 A2 A18 A19 A 4 A8 A1 A20 A 11 A10 A7 A3 A5 E4 E 2 D 1 D3 D6 D2 D5 C5 C2 C6 C3 C1 In tern al&external Cir culation cont rol Mot or Mode control Motor Blowe r spe ed adjusting r esistance 3 1 4 R3 R2 R1 2 B5 B 6 B1 B4 B2 B3 2 1 3 4 Blower High sp ee d Rela y Ground + B Fuse bos /L/14# A/C 11 Blower Relay FB13 30A FB7 5A Fuse box /G/20# R/L A/C 4 B W T O ECU75# TO ECU 60# A/C pres sure Switch A/C 7 Y/G 30 ACC1 31 IL LU M A/C S witch A/C 6 Temperature Control Motor ECU /E IP1/B6 A/C 12 R Br A/C press ure S witch F7 A/C 15th line power fuse A/C Blower fuse F 13 Front Eng ine Compartment Fuse Box Mode Con trol Motor Temperature Control Motor Manual A/C System 2 6 |