Home ReviewsRefund
Home/Saab/9-5/Saab 9-5 I (1997-2001)/Repair manual/Body, Cab Control Systems/Body Computer Systems: Other
Contents Wiring diagrams Section: Body, Cab Control Systems All sections

Body Computer Systems: Other Saab 9-5 I

Body, Cab Control Systems 1 illustration ~3097 words

EXTERIOR LIGHTING

Vehicle exterior lighting is operated with main light switch and left toggle switch in combination with DICE module. Exterior light functions that are controlled by DICE include headlights, front fog lights, rear fog lights, direction indicators (turn signals), and hazard flashers.

INTERIOR LIGHTING SYSTEM

DICE system controls interior lighting automatically or manually depending on position of light switch. Interior light functions that are controlled by DICE include dome lights, map lights, vanity mirror lights, glove box light, floor light, courtesy lights, and luggage compartment light.

RHEOSTAT CONTROL

Rheostat control is used for dimming instrument and control lighting. Brightness is regulated manually with a potentiometer.

ACOUSTIC WARNING

An acoustic warning (a chime) will sound if driver's door is opened with key in ignition switch or if parking lights are on and driver's door is opened while key is not in ignition.

HEATED REAR WINDOW & DOOR MIRRORS

Heating of rear window and door mirrors is activated manually or automatically via automatic climate control.

RADIATOR FAN

DICE controls radiator fan system control.

AIR CONDITIONING

DICE controls A/C system.

VENTILATION FAN DOES NOT START UNTIL 20 SECONDS AFTER ENGINE START

  1. Check user programming in Automatic Climate Control (ACC) system to check if fan delay is programmed. Programming is carried out by pressing function button corresponding to desired function. Press OFF and heated rear window buttons simultaneously to save selection. Selected function will flash on ACC display. When user programming is complete, turn ignition off for at least 10 minutes to save selections in ACC system memory. If fan delay is not programmed, go to next step.
  2. Turn ignition on. Using Tech 1 scan tool, contact DICE system. Read IGNITION +54 value. If value is ON, go to next step. If value is not ON, repair open circuit in Violet wire between DICE module terminal No. 31 and splice. After repair, go to step 4 .
  3. Turn ignition off. Using scan tool, read IGNITION +54 value. If value is OFF, system is okay. Go to next step. If value is not OFF, repair short circuit to voltage in Violet wire between DICE connector terminal No. 31 and splice. After repair, go to next step.
  4. Clear DTCs. Using scan tool, perform a function check. If DTC does not reoccur, system is okay. If DTC reoccurs, replace DICE module.

PIN VOLTAGE TESTS

Note. Pin voltage tests are performed at DICE control module connector. (Scheme 4)

DASHBOARD INTEGRATED CENTRAL ELECTRONICS (DICE) MODULE

  1. Courtesy/Floor Lighting Output Open door. Measure voltage between pin No. 1 (Yellow/Red wire) and pin No. 57 (Black wire). If battery voltage is present, system is okay. If battery voltage is not present, check wiring for an open circuit or short to ground. See «WIRING DIAGRAMS»(ref-2915-S04232706852000041400000) .
  2. Luggage Compartment Lighting Output Open trunk lid. Measure voltage between pin No. 2 (Blue/White wire) and pin No. 57 (Black wire). If battery voltage is present, system is okay. If battery voltage is not present, check wiring for an open circuit or short to ground.
  3. Hazard Flasher Switch Input Activate hazard flashers. Measure voltage between pin No. 3 (Blue/Red wire) and Pin No. 26 (Red wire). If battery voltage is present, system is okay. If battery voltage is not present, check wiring for an open circuit or short to ground.
  4. Low Beam Headlight Relay Output Put headlight switch in position No. 2. Turn ignition on. Measure voltage between pin No. 4 (Green/Gray wire) and pin No. 26 (Pink/White wire). If battery voltage is present, system is okay. If battery voltage is not present, check wiring for an open circuit or short to ground.
  5. I-Bus (-) Input/Output Ensure bus is active. Measure voltage between pin No. 5 (White wire) and pin No. 57 (Black wire). If 2-3 volts are present, system is okay. If 2-3 volts are not present, check wiring for an open circuit or short to ground. See «WIRING DIAGRAMS»(ref-2915-S04232706852000041400000) .
  6. Ignition B+ Input Turn ignition on. Measure voltage between pin No. 7 (Orange wire) and pin No. 57 (Black wire). If battery voltage is present, system is okay. If battery voltage is not present, check wiring for an open circuit or short to ground.
  7. A/C Pressure Sensor Input Turn ignition on. Measure voltage between pin No. 9 (Blue/Green wire) and pin No. 54 (Orange wire). If .4-4.6 volts are present, system is okay. If .4-4.6 volts are not present, check wiring for an open circuit or short to ground.
  8. Evaporator Temperature Sensor Input Turn ignition on. Measure voltage between pin No. 10 (Blue/White wire) and pin No. 30 (Green/Red wire). If about 2.8-3.7 volts are present at 43°F (6°C) evaporator temperature, system is okay. If about 2.8-3.7 volts are not present at 43°F (6°C) evaporator temperature, check wiring for an open circuit or short to ground.
  9. High Beam Relay Output Put headlight switch in position No. 2. Turn ignition on. Measure voltage between pin No. 11 (Orange/White wire) and pin No. 26 (Red wire). If battery voltage is present, system is okay. If battery voltage is not present, check wiring for an open circuit or short to ground. See «WIRING DIAGRAMS»(ref-2915-S04232706852000041400000) .
  10. Intermittent Rear Wiper Relay Output Using Tech 1 scan tool, activate intermittent rear wiper relay. Measure voltage between pin No. 12 (Yellow/Red wire) and pin No. 26 (Red wire). If battery voltage is present, system is okay. If battery voltage is not present, check wiring for an open circuit or short to ground.
  11. I-Bus (+) Input/Output Ensure bus is active. Measure voltage between pin No. 14 (Green wire) and pin No. 57 (Black wire). If 2-3 volts are present, system is okay. If 2-3 volts are not present, check wiring for an open circuit or short to ground.
  12. Light Switch, Position No. 2 Input Put light switch in position No. 2. Turn ignition on. Measure voltage between pin No. 15 (Blue/Yellow wire) and pin No. 57 (Black wire). If battery voltage is present, system is okay. If battery voltage is not present, check wiring for an open circuit or short to ground.
  13. Rear Fog Light Switch Input Put light switch in position No. 2. Turn ignition on. Hold fog light switch in. Measure voltage between pin No. 16 (Black/Red wire) and pin No. 57 (Black wire). If battery voltage is present, system is okay. If battery voltage is not present, check wiring for an open circuit or short to ground. See «WIRING DIAGRAMS»(ref-2915-S04232706852000041400000) .
  14. Heated Rear Window Input Press heated rear window switch. Measure voltage between pin No. 18 (Green/Yellow wire) and pin No. 57 (Black wire). If battery voltage is present, system is okay. If battery voltage is not present, check wiring for an open circuit or short to ground.
  15. Rear Window Intermittent Wiper Switch Input Turn ignition on. Put window wiper switch in intermittent position. Measure voltage between pin No. 19 (Red/Black wire) and pin No. 57 (Black wire). If battery voltage is present, system is okay. If battery voltage is not present, check wiring for an open circuit or short to ground.
  16. Left Direction Indicator Input Activate left direction indicator (left turn signal). Measure voltage between pin No. 20 (Brown/Orange wire) and pin No. 57 (Black wire). If battery voltage is present, system is okay. If battery voltage is not present, check wiring for an open circuit or short to ground.
  17. Intermittent Wiper Switch Input Turn ignition on. Put wiper switch in intermittent position. Measure voltage between pin No. 21 (Green wire) and pin No. 57 (Black wire). If battery voltage is present, system is okay. If battery voltage is not present, check wiring for an open circuit or short to ground. See «WIRING DIAGRAMS»(ref-2915-S04232706852000041400000) .
  18. Direction Indicator Power Supply Input Measure voltage between pin No. 22 (Red wire) and pin No. 57 (Black wire). If battery voltage is present, system is okay. If battery voltage is not present, check wiring for an open circuit or short to ground.
  19. Interior Lighting Output Open door. Measure voltage between pin No. 23 (Green/Red wire) and pin No. 57 (Black wire). If battery voltage is present, system is okay. If battery voltage is not present, check wiring for an open circuit or short to ground.
  20. Comfort Lighting Input Measure voltage between pin No. 24 (Red wire) and pin No. 57 (Black wire). If battery voltage is present, system is okay. If battery voltage is not present, check wiring for an open circuit or short to ground.
  21. Rear Fog Lights Output Put light switch in position No. 2. Turn ignition on. Hold fog light switch on. Measure voltage between pin No. 25 (Pink/White wire on 1999 models; Red/White wire on 2000 models) and pin No. 57 (Black wire). If battery voltage is present, system is okay. If battery voltage is not present, check wiring for an open circuit or short to ground. See «WIRING DIAGRAMS»(ref-2915-S04232706852000041400000) .
  22. DICE Power Supply Input Measure voltage between pin No. 26 (Red wire) and pin No. 57 (Black wire). If battery voltage is present, system is okay. If battery voltage is not present, check wiring for an open circuit or short to ground.
  23. Headlight Wiper Relay Output (2000 Models) Using Tech 1 scan tool, activate headlight wiper relay. Measure voltage between pin No. 27 (Yellow wire) and pin No. 57 (Black wire). If battery voltage is present, system is okay. If battery voltage is not present, check wiring for an open circuit or short to ground.
  24. Diagnostics Input/Output Measure voltage between pin No. 28 (Blue wire) and pin No. 57 (Black wire). If 11 volts are present, system is okay. If 11 volts are not present, check wiring for an open circuit or short to ground.
  25. Front Fog Light Relay Output Activate fog light relay with Tech 1 scan tool. Measure voltage between pin No. 29 (Green wire) and pin No. 26 (Red wire). If battery voltage is present, system is okay. If battery voltage is not present, check wiring for an open circuit or short to ground.
  26. Evaporator Temperature Sensor Ground Input Measure voltage between pin No. 30 (Green/Red wire) and No. 26 (Red wire). If battery voltage is present, system is okay. If battery voltage is not present, check wiring for an open circuit or short to ground.
  27. Ignition +54 Logic Input Turn ignition on. Measure voltage between pin No. 31 (Violet wire) and pin No. 57 (Black wire). If battery voltage is present, system is okay. If battery voltage is not present, check wiring for an open circuit or short to ground.
  28. Intermittent Wiper Potentiometer Ground Input Measure voltage between pin No. 33 (Gray/Green wire) and pin No. 26 (Red wire). If battery voltage is present, system is okay. If battery voltage is not present, check for an open circuit or short to ground. See «WIRING DIAGRAMS»(ref-2915-S04232706852000041400000) .
  29. Low Speed Radiator Fan Relay Output Using scan tool, activate low speed radiator fan relay. Measure voltage between pin No. 35 (Red/White wire) and pin No. 26 (Red wire). If battery voltage is present, system is okay. If battery voltage is not present, check wiring for an open circuit or short to ground.
  30. A/C Pressure Sensor Power Supply Output Turn ignition on. Measure voltage between pin No. 38 (Blue/Yellow wire) and pin No. 57 (Black wire). If 5 volts are present, system is okay. If 5 volts are not present, check wiring for an open circuit or short to ground.
  31. Light Switch Off Input Turn light switch off. Turn ignition on. Measure voltage between pin No. 39 (Pink wire) and pin No. 57 (Black wire). Battery voltage should be present when fuse No. 35 is installed. No voltage should be present if fuse No. 35 is removed. If voltages are to specification, system is okay. If voltages are not to specification, check wiring for an open circuit or short to ground.
  32. High/Low Beam Input Move high/low beam stalk to high beam position. Turn ignition on. Measure voltage between pin No. 41 (Blue/Violet wire) and pin No. 57 (Black wire). If battery voltage is present, system is okay. If battery voltage is not present, check wiring for an open circuit or short to ground.
  33. Rear Window Washer Switch Input Turn ignition on. Activate rear window washer switch. Measure voltage between pin No. 42 (Gray/White wire) and pin No. 57 (Black wire). If battery voltage is present, system is okay. If battery voltage is not present, check wiring for an open circuit or short to ground. See «WIRING DIAGRAMS»(ref-2915-S04232706852000041400000) .
  34. Right Direction Indicator Switch Input Activate right direction indicator (right turn signal). Measure voltage between pin No. 44 (Yellow wire) and pin No. 57 (Black wire). If battery voltage is present, system is okay. If battery voltage is not present, check wiring for an open circuit or short to ground.
  35. Back-Up Light Switch Input Put vehicle in reverse. Measure voltage between pin No. 45 (Green wire) and pin No. 57 (Black wire). If battery voltage is present, system is okay. If battery voltage is not present, check wiring for an open circuit or short to ground.
  36. Map/Interior Lighting Power Supply Input Measure voltage between pin No. 46 (Red wire) and pin No. 57 (Black wire). If battery voltage is present, system is okay. If battery voltage is not present, check wiring for an open circuit or short to ground.
  37. Right Direction Indicator Bulb Output Position direction indicator to right turn position. Turn ignition on. Measure voltage between pin No. 47 (Black/Green wire) and pin No. 57 (Black wire). If battery voltage is present, system is okay. If battery voltage is not present, check wiring for an open circuit or short to ground. See «WIRING DIAGRAMS»(ref-2915-S04232706852000041400000) .
  38. Rear Fog Lights Power Supply Input Measure voltage between pin No. 48 (Red wire) and pin No. 57 (Black wire). If battery voltage is present, system is okay. If battery voltage is not present, check wiring for an open circuit or short to ground.
  39. Button Illumination Output Position light switch in position No. 2. Put rheostat in maximum brightness position. Turn ignition on. Measure voltage between pin No. 49 (Blue/White wire) and pin No. 57 (Black wire). If 3.5-12 volts are present, system is okay. If 3.5-12 volts are not present, check wiring for an open circuit or short to ground.
  40. Radiator Fan High Speed Relay No. 2 Output Using Tech 1 scan tool, activate relay. Measure voltage between pin No. 51 (Green/White wire) and pin No. 26 (Red wire). If battery voltage is present, system is okay. If battery voltage is not present, check wiring for an open circuit or short to ground.
  41. Heated Rear Window Relay Output Turn ignition on. Hold heated rear window switch on. Measure voltage between pin No. 52 (Green wire on 1999 models; Blue/White Wire on 2000 models) and pin No. 26 (Red wire). If battery voltage is present, system is okay. If battery voltage is not present, check wiring for an open circuit or short to ground. See «WIRING DIAGRAMS»(ref-2915-S04232706852000041400000) .
  42. Radiator Fan High Speed Relay Output Using Tech 1 scan tool, activate radiator fan high speed relay. Measure voltage between pin No. 53 (Gray/White wire) and pin No. 26 (Red wire). If battery voltage is present, system is okay. If battery voltage is not present, check wiring for an open circuit or short to ground.
  43. A/C Pressure Sensor Ground Input Measure voltage between pin No. 54 (Orange wire) and pin No. 26 (Red wire). If battery voltage is present, system is okay. If battery voltage is not present, check wiring for an open circuit or short to ground.
  44. Intermittent Wiper Potentiometer Input Turn ignition on. Measure voltage between pin No. 55 (Violet/White wire) and pin No. 57 (Black wire). For 2 seconds, zero volts should be present. For 15 seconds, 6.3 volts should be present. If voltages are to specification, system is okay. If voltages are not to specification, check wiring for an open circuit or short to ground.
  45. Ground Circuit Input Measure voltage between pin No. 57 (Black wire) and battery positive voltage. If battery voltage is present, system is okay. If battery voltage is not present, check wiring for an open circuit or short to ground. See «WIRING DIAGRAMS»(ref-2915-S04232706852000041400000) .
  46. Windshield Intermittent Wiper Relay Output Activate intermittent wiper relay with Tech 1 scan tool. Measure voltage between pin No. 58 (Blue/Red wire) and battery positive voltage. If battery voltage is present, system is okay. If battery voltage is not present, check wiring for an open circuit or short to ground.
  47. Front Fog Light Switch Input Turn ignition on. Hold front fog light switch in. Measure voltage between pin No. 62 (Blue wire) and pin No. 57 (Black wire). If battery voltage is present, system is okay. If battery voltage is not present, check wiring for an open circuit or short to ground.
  48. Windshield Wiper Parked Position Input Position windshield wipers in any position but parked position. Turn ignition on. Measure voltage between pin No. 63 (Yellow/Black wire) and pin No. 57 (Black wire). If battery voltage is present, system is okay. If battery voltage is not present, check wiring for an open circuit or short to ground.
  49. Ignition +15 Logic Input Turn ignition on. Measure voltage between pin No. 64 (Blue/Red wire) and pin No. 57 (Black wire). If battery voltage is present, system is okay. If battery voltage is not present, check wiring for an open circuit or short to ground. See «WIRING DIAGRAMS»(ref-2915-S04232706852000041400000) .
  50. A/C Request Input Turn ignition on. Hold A/C switch depressed. Measure voltage between pin No. 65 (Green/Yellow wire on 1999 models; Green/White wire on 2000 models) and pin No. 57 (Black wire). If battery voltage is present, system is okay. If battery voltage is not present, check wiring for an open circuit or short to ground.
  51. Windshield Washer Input Turn ignition on. Activate windshield washers. Measure voltage between pin No. 68 (Yellow/Black wire on 1999 models; Yellow wire on 2000 models) and pin No. 57 (Black wire). If battery voltage is present, system is okay. If battery voltage is not present, check wiring for an open circuit or short to ground.
  52. Left Direction Indicator Output Turn ignition on. Activate left turn signal. Measure voltage between pin No. 69 (Yellow/White wire) and pin No. 57 (Black wire). If battery voltage is present, system is okay. If battery voltage is not present, check wiring for an open circuit or short to ground.
  53. Reading Light Output Turn ignition on. Measure voltage between pin No. 70 (Red/White wire) and pin No. 57 (Black wire). If battery voltage is present, system is okay. If battery voltage is not present, check wiring for an open circuit or short to ground. See «WIRING DIAGRAMS»(ref-2915-S04232706852000041400000) .

Scheme 4

Scheme 4
Scheme 4

More articles — Body Computer Systems