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Home >> Saab >> 2003 >> 9-3 Vector, Automatic >> Repair and Diagnosis (Single Page) >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> Automatic Climate Control, Acc (Early; 9400) >> Technical Data >> Measurement Values, Control Module Connections >> ACC-unit, control module connections
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ACC-unit, control module connections

Fig 1: Identifying Control Module Connections (ACC-Unit)
G03582527Courtesy of SAAB-SCANIA OF AMERICA, INC.
CONTROL MODULE CONNECTIONS REFERENCE

Pin Lead color Component/Function In/Out Measuring conditions Measure between Value
1 BK Ground for control module In Ignition ON 4-1 B+
2 YE Power supply, air recirculation motor Out Activate fresh air 2-21 +12V
2, cont'd YE Power supply, air recirculation motor Out Activate air recirculation 2-21 -12V
3 BN/RD Connection for parking heater In Activate parking heater 3-1 B+
4 BN/GY Power supply +15 In Ignition ON or activated control module 4-1 B+
5 PK/WH B+ current to fan control module Out Ignition ON 5-1 B+
6 PK Stepping motor, air mixing damper Out Ignition ON activate engine 6-25 50 Hz/50% LP Hi-Lo
7 BN/WH Stepping motor, air mixing damper Out Ignition ON activate engine 7-26 50 Hz/50% LP Hi-Lo
8 BU/WH Stepping motor, air distribution damper Out Ignition ON activate engine 8-27 50 Hz/50% LP Hi-Lo
9 WH Stepping motor, air distribution damper Out Ignition ON activate engine 9-28 50 Hz/50% LP Hi-Lo
10-13   No connection        
14 GY/RD Fan control module, control current Out Ignition ON change fan speed 14-1 0-5 V
15 YE/RD Power supply fan, cabin temperature sensor Out Ignition ON 15-1 B+
16 BN/RD Solar sensor Out Ignition ON 16-36 0-0.5 V
17-18   No connection        
19 VT Mixed-air temperature sensor In Ignition ON 19-38 see TECHNICAL DATA 
20 BU/YE Cabin temperature sensor In Ignition ON 20-39 see TECHNICAL DATA 
21 RD Power supply, air recirculation motor Out Activate air recirculation 2-21 LHD: -12 V
RHD: +12 V
21 cont'd RD Power supply, air recirculation motor Out Activate fresh air 2-21 LHD: +12 V
RHD: -12 V
22 RD/WH Power supply +30 In Power supply +30 22-1 B+
23   No connection        
24 BN/GY Shut-off valve, heater box Out Ignition ON max cooling-LO 4-24 B+
25 BU/GN Stepping motor, air mixing damper Out Ignition ON activate engine 25-6 50 Hz/50% LP Hi-Lo
26 OG Stepping motor, air mixing damper Out Ignition ON activate engine 26-7 50 Hz/50% LP Hi-Lo
27 GN/WH Stepping motor, air distribution damper Out Ignition ON activate engine 27-8 50 Hz/50% LP Hi-Lo
28 BN Stepping motor, air distribution damper Out Ignition ON activate engine 28-9 50 Hz/50% LP Hi-Lo
29-32   No connection        
33 GN I-bus (+) In/Out Ignition ON 33-1 2-3 V
34 WH I-bus (-) In/Out Ignition ON 34-1 2-3 V
35   No connection        
36 YE/GN Solar sensor ground Out Ignition ON 16-36 0-0.5 V
37   No connection        
38 BU/RD Air-mixing temperature sensor, ground Out Ignition ON 38-19 see TECHNICAL DATA 
39 YE/BN Cabin temperature sensor, sensor ground Out Ignition ON 39-20 see TECHNICAL DATA 
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