Mim

Remove center console right side trim panel. Disconnect 4-pin flat male plug (5 . Connect term. 1 and 2 (each yellow) to ohiraneter (measuring range x 100, calibrated). Tester should show the following values. At 68 F 2570 ohms ) Blow through sensor housing 77 F 2220 ohms ) while testing - measured 86 F 1900 ohms ) value should drop due to If there is no reading or no change in resistance, replace the sensor. Repeat test prior to installing a new sensor. Turn ignition on, set program control...

Autom Bi

OFF,DEF OFF ,ECO,DEF OFF,DEF * OFF,DEF * DEF * Test lamp goes out when center vent switch is moved check operation of switch. Note During this test the servo motor must run - from top to bottom or vice versa for each test step. Move temperature selector lever from 65 to 85 to 6SO F. Solenoid valves will be activated If any of the tests are not correct, first check wire connections (see wiring diagram). The defect could be in either the control switch or control unit. If control switch is okay,...

Testing Climate Control Air Conditioner M 563

Set temperature selector lever to 65 F. Set selector lever to AUTOM, BI or DEF. In each position of lever, the magnetic clutch must be heard to cut in (click). If clutch does not work, connect test lamp to ground (engine body). Test lamp should come on at following checkpoints. Compressor clutch plug (at right in front of camshaft cover). Connection on electric air valve (at right on engine cross member). Term. 9 of engine's multiple-pin plug (at right in engine compartment). On both...

L

D) Pull off wires from coolant temperature sending unit in engine compartment (large plug connection). e) Program control in OFF position. Note If the above tests shows a defect, which can't be found in control switch or wiring, check the control unit as follows. Connect test lamp on connected plug (S2) term. 3 (brown) and term. 10 (green). Test lamp should come on at coolant temp, above 10 4 F. Test lamp should go out at coolant temp, below 104 F. (Pull off coolant temperature sending unit...

Info

The air conditioner system is supplied with power from terminal 15 (ignition switch) via fuse 9. Remove cover from central electric board remove both center console side trim panels. 2.) CEL plugs Fl and L6 . , n 3.) On right side of center console a 6-pin flat male plug (3) can be seen term. 1 (black white) _ 4.) On control switch plug (Bl) term. 4 (black white) and term. 5 (black white). Plug is only accessible after removal or switch unit. 5 .) Term._of Plug with Program Control at Pos . 11...

Porsche 928 Recirculation Flap

The vacuum servos regulating the flaps are activated by solenoid valves. The flap activation can also be checked in conjunction with the above mentioned test. If the test lamp comes on for a given valve (vacuum available) , the corresponding flap must be in the following position. Footwell open Defroster closed Center vent open 1st step (switch must be in bottom position) Center vent open 2nd step (switch must be in bottom position) Mixing flap open Heater valve closed Recirculation closed D.)...

Temp Mixing

FLAP POSITION o i0 20 30 40 50 60 70 80 90 100 928 - AUTOMATIC AIR CONDITIONER (Climate Control) (Flap Hose Diagram) Center vent double servo (orange Center vent double servo (brown) Recirculation servo (blue Recirculation flap Blower connection (fresh air Electric vacuum solenoid valve Servo motor and control unit 10 Water valve + mixture flap 11 Vacuum solenoid Recirculation flap 13 Center vent 1st 2nd step 15 Temperature sender, coolant 16 Temperature switch, evaporator 21-Ashtray Diagram 3...