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Connect the Saab Intelligent Tester (ISAT-86 10 651) scanner to Green diagnostic connector located under right front seat. Follow manufacturer’s test procedure to retrieve and erase DTCs. See ABS DTCS table. When fault-tracing ABS system, DO NOT directly probe ABS ECU connector pins. Use breakout box and breakout box lead connected between ABS ECU and connector. See Fig. 6 . Breakout box pin numbers are identical to ABS ECU terminal numbers. Problem ABS ECU Fault ABS ECU Fault (RAM) Defective System Relay No Signal From Left Front Wheel Sensor No Signal From Right Front Wheel Sensor No Signal From Left Rear Wheel Sensor Diagnose all other DTCs before diagnosing DTCs 42251 or 1. Breakout box pin numbers and ABS ECU terminal numbers are identical. 1. Turn ignition switch to RUN position. Check for battery voltage between breakout box pins No. 1 and 3, and pins No. 1 and 33. If no voltage is present at either pin No. 3 or 33, check ABS 30-amp fuse in main bulkhead fuse box. Also check Red wire from fuse to main relay and distribution block on battery tray. 2. If wiring is okay but voltage is still not present, ensure continuity is present between breakout box pin No. 3 and relay terminal No. 30 (White wire), and between breakout box pin No. 33 and relay terminal No. 87a (Black wire). Ensure 10-amp ABS fuse is okay.

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1 2 3 4 5 6 Ignition switch in the OFF position. Remove the upper and lower steering column covers, 3 screws. Remove the switches for the direction indicators and windscreen wipers. Remove the SID unit and any radio components. Unplug the connectors concerned and the aerial. Remove the heating and ventilation panel and unplug the connector. Remove the cover on the side of the dashboard. Remove the light control panel and connector concerned. 7 Remove the switch for the hazard flashers and connector. Remove other switches and their connectors. Remove the switch panel, 6 screws, fastened with 4 clips. Lift out the switch panel. 8 9 To fit 1999 Saab 9-5 SE Sedan V6-3.0L Turbo (B308) 1 2 Put the switch panel back in place. From the driver’s side, check that the air ducts are correctly positioned. Note: Check that no contacts or wires have been trapped. 3 4 Fit the switch panel, fasten with 4 clips and 6 screws. Refit the switch for the hazard flashers and reconnect the connector. Connect and fit other switches. Note: There is a mark showing which side of the hazard flasher unit should be at the top.

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1. Unplug the connector. 2. Remove the mass air flow sensor. To fit 1. Fit the mass air flow sensor with a new O-ring, sparingly lubricated with Vaseline. 2. Plug in the connector. Vehicle Level Powertrain Management Fuel Delivery and Air Induction Air Flow Meter/Sensor Service and Repair Service and Repair Mass Air Flow Sensor (205) To remove

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ISOLATING COMPRESSOR NOTE: Only compressors with stem-type service valves can be isolated. 1) Connect service gauge set to the compressor service valves and open compressor valves slightly (turn in clockwise). Start engine and operate air conditioning. Slowly turn compressor suction valve clockwise toward closed (front-seated) position. REFRIGERANT OIL Only new, pure, moisture-free refrigerant oil should be used in the air conditioning system. This oil is highly refined and dehydrated to a point where moisture content is less than 10 parts per million. The oil container must be tightly closed at all times when not in use, or moisture will be absorbed into the refrigerant oil from the air. ATSUGI ROTARY VANE CLUTCH R & I Removal When replacing compressor clutch, be careful not to scratch shaft or bend pulley. When removing center bolt, hold clutch disc with Clutch Holder (KV99231010). Using Hub Puller (KV998VR001 & KV99231010), remove clutch disc. When removing pulley, remove lock nut with Hub Socket (KV99235160).

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DESCRIPTION Saab Traction Control System (TCS) operates in tandem with appropriate Anti-lock Braking (ABS) system. Saab 9000 series vehicles are equipped with Mark IV ABS. TCS is made up of 2 subsystems: ABS and Electronic Throttle System (ETS). System also incorporates a cruise control function. An additional Automatic Slip Reduction (ASR) system is used on automatic transmission models. TCS uses many components already included in ABS system, including wheel sensors, hydraulic unit and valve block. TCS system consists of 2 different variations, one for manual transmission and one for automatic transmission. See Figs. 1 and 2. Manual transmission TCS has capability to apply front brakes independently during low speed wheel spin and also close throttle valve to reduce wheel spin at any speed. Automatic transmission TCS does not have capability to apply brakes during wheel spin conditions. Automatic transmission TCS does control operation of transmission kickdown cable in addition to controlling throttle valve. ABS components of system include a 55-terminal ECU (located on battery shelf), ABS hydraulic unit (with traction control valve block on manual transmission version), wheel speed sensors, and warning lights. See Fig. 3.