2001 Chevrolet $10 Pickup 2001 ACCESSORIES/SAFETY EQUIPMENT General Motors Corp. - Air Bag Restraint Systems 2001 ACCESSORIES/SAFETY EQUIPMENT General Motors Corp. - Air Bag Restraint Systems DESCRIPTION & OPERATION WARNING: Accidental air bag deployment is possible. Personal injury may result. Read and follow all WARNINGS and AIR BAG SAFETY PRECAUTIONS before working on air bag system or related components. SUPPLEMENTAL INFLATABLE RESTRAINT (SIR) SYSTEM. SIR system is designed to supplement protection provided by driver and passenger-side seat belts. A frontal crash of sufficient force up to 30 degrees off center line of vehicle will deploy driver and passenger-side air bags. Steering column and knee bolsters below instrument panel also absorb crash energy. of Sensing and Diagnostic Module (SDM), driver and passenger-side air bag modules, front end discriminating sensors, SIR coil assembly and AIR BAG warning light in instrument cluster. AIR BAG MODULES Air bag modules consist of an inflatable bag and an inflator. When vehicle is in an accident of sufficient force, SDM causes current flow through deployment loops. Current passing through inflators ignites inflator charges, producing gas which rapidly inflates air bags AIR BAG WARNING LIGHT. Ignition switch applies battery voltage to AIR BAG waming light. SDM controls AIR BAG warning light operation. When ignition switch is first turned on, AIR BAG warning light verifies system operation by flashing 7 times and turning off. During vehicle operation, AIR BAG warning light warns driver of malfunctions which could potentially affect SIR system operation, FRONT END DISCRIMINATING SENSORS Front end discriminating sensors are auxiliary sensors which assist SDM in determining when deployment should occur by providing an input signal to SDM. Front end discriminating sensors are not part of deployment loop. KNEE BOLSTERS Knee bolsters are used to absorb energy and control forward movement of driver and front seat passenger. This is accomplished by limiting leg movement during a frontal crash.2001 Chevrolet S10 Pickup 2001 ACCESSORIES/SAFETY EQUIPMENT General Motors Corp. - Air Bag Restraint Systems PASSENGER-SIDE AIR BAG MODULE DISABLE SWITCH Passenger-side air bag module disable switch is located near center of instrument panel. Switch is used to disable the passenger-side air bag module. Passenger-side air bag will not deploy in a severe frontal collision with switch in the disable position. SENSING & DIAGNOSTIC MODULE (SDM) SDM monitors vehicle velocity changes to detect frontal crashes which are severe enough to warrant air bag module deployment. When a frontal crash of sufficient force is detected, SDM causes current flow to air bag modules to deploy air bags. SDM also maintains a 23 Volt Loop Reserve (23 VLR) energy supply to provide deployment energy for up to one minute after loss of voltage. IM provides diagnostic monitoring of SIR system electrical components. When a maifunction is detected, SDM sets a Diagnostic Trouble Code (DTC) which can be retrieved using a scan tool. SDM warns driver of system malfunctions by controlling AIR BAG warning light SIR COIL ASSEMBLY SIR coil assembly consists of 2 or more current-carrying coils. Coils are attached to steering column and allow rotation of steering wheel, while maintaining continuous continuity of driver-side air bag deployment loop. COMPONENT LOCATIONS COMPONENT LOCATIONS ‘Component Location] AIR BAG warning light In instrument cluster] Clockspring Under steering wheel Driver-side air bag ‘On steering wheel Front end discriminating sensors Lower radiator support] Passenger-side air bag Passenger side instrument panel] Passenger-side air bag disable switch Center of instrument panel| Sensing & diagnostic module Under center console| SYSTEM OPERATION CHECK If system is functioning normally, AIR BAG warning light flashes 7 times and then turns off when ignition switch is turned on. System malfunction is indicated when light does not illuminate at all, light comes on while vehicle is driven, light flashes 7 times and remains on or light does not flash but remains on when ignition switch is turned on.2001 Chevrolet S10 Pickup 2001 ACCESSORIES/SAFETY EQUIPMENT General Motors Corp. - Air Bag Restraint Systems AIR BAG SAFETY PRECAUTIONS Observe the following precautions when working with SIR system SDM maintains sufficient voltage to cause air bag deployment for up to one minute after ignition switch is turned off, battery is disconnected, or fuse powering SDM is removed. In order to begin servicing immediately, inflator modules must be removed from deployment loop. See DISABLING & ACTIVATING AIR BAG SYSTEM . After repairs, ensure AIR BAG warning light is working properly and no system faults are indicated. See SYSTEM OPERATION CHECK Always wear safety glasses when servicing or handling an air bag module. Air bag modules must be stored in original special containers until used for service Store in a clean, dry place, away from sources of extreme heat, sparks, or high electrical energy Air bag modules or SDMs should not be subjected to temperatures greater than 150°F (65°C). SIR components should not be used if they have been dropped from a height of 3 feet (0.9 m) or greater. When carrying a live air bag module, trim cover should be pointed away from body to minimize injury in case of accidental deployment. When placing a live air bag module on a bench or other surface, always make certain that trim cover faces up. This will reduce motion of module if accidentally deployed. After deployment, air bag surface may contain deposits of sodium hydroxide, which can irritate skin. Always wear safety glasses, rubber gloves and a long-sleeved shirt during clean-up and wash hands using mild soap and water. Follow correct disposal procedures, See DISPOSAL PROCEDURES At no time should any electrical source be allowed near inflator on back of air bag module. Do not apply power to SIR system unless all components are connected or a diagnostic test requests it, as this will set a diagnostic trouble code. Do not attempt to service air bag modules, front end discriminating sensor, passenger- side air bag disable switch, SDM or SIR coil assembly. If defective, these parts must be replaced. Do not probe a wire through insulator. Wire will be damaged and eventually fail due to corrosion. When performing electrical tests, prevent accidental shorting of terminals. Such mistakes can damage fuses or components and may cause a second fault code to set, making diagnosis of original problem more difficult When using diagnostic tests to diagnose SIR system, under no circumstances should a volt-ohmmeter, test light or any type of ‘ical equipment not specified by manufacturer be used.2001 Chevrolet $10 Pickup 2001 ACCESSORIES/SAFETY EQUIPMENT General Motors Corp. - Air Bag Restraint Systems « If SIR system is not fully functional for any reason, vehicle should not be driven until system is repaired. Never remove bulbs, modules, sensors or other components or in any way disable system from operating normally ADJUSTMENTS CENTERING COIL ASSEMBLY NOTE: New coil assemblies are pre-centered and include a centering tab that is removed once coil is installed. Hold coil assembly with clear bottom upward to see coil bottom. While holding coil assembly housing, depress centering tab and rotate hub in direction of arrow until it stops. See Fig. 1 . Coil ribbon should now be wound up snugly against center hub, Rotate coil hub in opposite direction approximately 2 1-2 turns, Release spring lock between locking tabs Coil Ribbon Tab SIR Coil Assembly 99H00353, 1: Centering SIR Coil Assembly Courtesy of GENERAL MOTORS CORP. DISABLING & ACTIVATING AIR BAG SYSTEM2001 Chevrolet $10 Pickup 2001 ACCESSORIES/SAFETY EQUIPMENT General Motors Corp. - Air Bag Restraint Systems CAUTION: Vehicle computer and memory systems may lose memory data when battery is disconnected. Driveability problems may exist until computer systems have completed a relearn cycle. See Computer Relearn Procedures in the Reference Information section. Record preset radio stations and obtain code for theft deterrent-equipped radios before disconnecting battery. WARNING: Accidental air bag deployment is possible. Personal injury could result. SDM maintains sufficient voltage to cause air bag deployment for up to one minute after ignition switch is turned OFF, battery is disconnected, or fuse powering SDM is removed. In order to begin servicing immediately, inflator modules must be removed from deployment loop. NOTE: When SIR fuse is removed and ignition switch is in RUN position, 1 N AIR BAG warning light will be on. This does not indicate a system malfunction. Tum steering wheel to place vehicle wheels in straight-ahead position. Tum ignition switch to LOCK position and remove key. Remove SIR fuse (15-amp) located in instrument panel fuse block. Remove left-side sound insulator and knee bolster. Remove Connector Position Assurance (CPA) clip and disconnect driver-side air bag module Yellow 2-pin connector at base of steering column, See Fig. 2 . Remove CPA clip and disconnect passenger-side air bag module Yellow 2-pin connector located behind glove box. See Fig. 3 . System is now disabled.2001 Chevrolet $10 Pickup 2001 ACCESSORIES/SAFETY EQUIPMENT General Motors Corp. - Air Bag Restraint Systems Driver-Side Yellow 2-Pin Connector Position VEHICLE. Assurance _— (CPA) Clip Steering Column GoaF 13586 Fig. 2: Locating Driver-side Air Bag Module Yellow 2-pin Connector Courtesy of GENERAL MOTORS CORP.2001 Chevrolet $10 Pickup 2001 ACCESSORIES/SAFETY EQUIPMENT General Motors Corp. - Air Bag Restraint Systems Passenger Air Bag Yellow 2-Pin Connector Connector Position Assurance (CPA) Clip a G98D13584 Fig. 3: Locating Passenger-side Air Bag Module Yellow 2-pin Connector Courtesy of GENERAL MOTORS CORP. ACTIVATING SYSTEM Remove key from ignition switch. Connect driver and passenger-side air bag module Yellow 2-pin connectors located at base of steering column and behind glove box. Install CPA clips. Install left sound insulator and knee bolster. Install SIR fuse. Check system for proper operation. See SYSTEM OPERATION CHECK DISPOSAL PROCEDURES WARNING: Accidental air bag deployment is possible. Personal injury could result. Deploy air bags before disposal. DO NOT2001 Chevrolet S10 Pickup 2001 ACCESSORIES/SAFETY EQUIPMENT General Motors Corp. - Air Bag Restraint Systems dispose of undeployed air bag modules at normal refuse locations. Undeployed air bag modules contain substances that can cause severe illness or personal injury if sealed container is damaged during disposal. NOTE: If vehicle is to be scrapped, perform on-vehicle air bag deployment procedure. ON-VEHICLE DEPLOYMENT 1 6 Before proceeding, see AIR BAG SAFETY PRECAUTIONS . Turn ignition switch OFF, remove key and put on safety glasses. Disconnect driver and passenger-side air bag module connectors. See Fig. 2 and Fig. 3 . Cut air bag module harness connectors from vehicle leaving at least 6" (152 mm) of wire at connector. Strip 0.5" (13 mm) of insulation from each connector wire lead. Cut 2 15-foot deployment wires from 18-gauge multi-strand wire. Strip 0.5" (13 mm) of insulation from both ends of wires. Twist wires together at one end to short. Twist together one connector wire lead to other end of each deployment wire. See Fig. 4, Bend twisted connection flat and wrap tightly with electrical tape to insulate. Repeat this step for other connector wire lead Remove all loose objects from front seat and ensure no one is in vehicle. Connect deployment hamess to air bag module connector. Stretch wires away from car as far as possible. Repeat steps 2) through 4) for passenger-side air bag module. Cover windshield and front door openings with a drop cloth Separate wire ends. Connect each pair of wires to a 12-volt battery. Air bags should deploy. Disconnect wires from battery. DO NOT touch air bag module area for at least 10 minutes due to heat generated during deployment. Wear gloves and safety glasses before handling deployed air bag module. Wash hands with mild soap and water afterward. Deployed air bag modules can be disposed of like any other part. Repeat deployment procedure for passenger-side air bag. If air bag modules do not deploy, carefully remove from vehicle. See AIR BAG MODULES under REMOVAL & INSTALLATION. Temporarily store module with trim facing up. Contact manufacturer for proper disposal instructions.2001 Chevrolet $10 Pickup 2001 ACCESSORIES/SAFETY EQUIPMENT General Motors Corp. - Air Bag Restraint Systems REPEAT PROCEDURE 96H14008, Fig. 4: Preparing Deployment Harness For On-vehicle Deployment Courtesy of GENERAL MOTORS CORP. OFF-VEHICLE DEPLOYMENT 1. Before proceeding, see AIR BAG SAFETY PRECAUTIONS . Tum ignition switch OFF, remove key and put on safety glasses. Short 2 SIR Deployment Harness (J-2001 Chevrolet S10 Pickup 2001 ACCESSORIES/SAFETY EQUIPMENT General Motors Corp. - Air Bag Restraint Systems 38826) leads together by fully seating one banana plug into the other. Connect appropriate pigtail adapter to SIR deployment harness. Sce Fig. 5 . Remove driver-side air bag module. See AIR BAG MODULES under REMOVAL & INSTALLATION. Remove horn lead, redundant steering wheel control leads, horn buttons and steering wheel control buttons from air bag module, if applicable. Place air bag module with vinyl trim cover facing up, preferably on paved outdoor surface, away from any loose or flammable objects. Clear space at least 6 feet (1.8 m) in diameter around air bag. Extend SIR deployment hamess and pigtail adapter to full length away from air bag module. Place a 12-volt battery near shorted end of SIR deployment harness. Connect air bag module to pigtail adapter on SIR deployment harness. Ensure area around air bag module is clear of people or loose objects. Verify that air bag module is resting with trim cover facing up. Separate 2 banana plugs on SIR deployment harness. Connect SIR deployment harness wires to battery. Air bag module should deploy immediately. If air bag module does not deploy, go to step 7. Disconnect SIR deployment harness from battery. Short 2 SIR deployment harness leads together. DO NOT touch metal surfaces of air bag module for at least 10 minutes due to heat generated during deployment. Wear gloves and safety glasses when handling deployed air bag module. Wash hands with mild soap and water after handling. Dispose of deployed air bag module as you would any other part Inspect pigtail adapter and SIR deployment harness for damage after each use. Remove passenger-side air bag module. See AIR BAG MODULES under REMOVAL & INSTALLATION. Mount passenger-side air bag module in Deployment Fixture (J39401-B). Repeat deployment procedure for air bag module. If passenger-side air bag module fails to deploy, go to next step. Ensure that SIR deployment harness is disconnected from battery and that 2 banana plugs have been shorted together. Disconnect pigtail adapter from air bag module. Temporarily store air bag module with trim cover facing up. Contact manufacturer for proper disposal instructions.2001 Chevrolet $10 Pickup 2001 ACCESSORIES/SAFETY EQUIPMENT General Motors Corp. - Air Bag Restraint Systems Pigtail Adapter SIR Deployment Harness + 96114009 Fig. 5: Preparing Deployment Harness For Off-vehicle Deployment Courtesy of GENERAL MOTORS CORP. POST-COLLISION INSPECTION When a vehicle has been involved in a collision, certain components of the passive restraint system must be inspected or replaced. See AIR BAG/SRS COMPONENT INSPECTION & REPLACEMENT TABLES article in the GENERAL INFORMATION section REMOVAL & INSTALLATION WARNING: Accidental air bag deployment is possible. Personal injury could result. See AIR BAG SAFETY PRECAUTIONS . After component replacement, check system operation. See SYSTEM OPERATION CHECK . SENSING & DIAGNOSTIC MODULE (SDM) Removal 1. Before proceeding, see AIR BAG SAFETY PRECAUTIONS . Disable air bag system. See DISABLING & ACTIVATING AIR BAG SYSTEM 2, Remove driver seat, seat belt, carpet retaining sill trim molding and floor console (if equipped). Make an "XK" shaped incision in carpet directly over SDM. See Fig. 6 . Fold2001 Chevrolet S10 Pickup 2001 ACCESSORIES/SAFETY EQUIPMENT General Motors Corp. - Air Bag Restraint Systems back carpet to access SDM. Remove Connector Position Assurance (CPA) clip and disconnect SDM harness connector from SDM, Remove SDM mounting nuts and SDM. Installation. To install, reverse removal procedure. Tighten SDM mounting nuts to specification. See TORQUE SPECIFICATIONS . Activate air bag system. See DISABLING & ACTIVATING AIR BAG SYSTEM . Check system for proper operation. See SYSTEM OPERATION CHECK SDM SDM Harness Connector \@ FRONT OF VEHICLE Connector Position Assurance (CPA) Clip 99823995 Fig. 6: Identifying Sensing & Diagnostic Module (SDM) Courtesy of GENERAL MOTORS CORP. FRONT END DISCRIMINATI G SENSORS Removal 1. Before proceeding, see AIR BAG SAFETY PRECAUTIONS , Disable air bag system. See DISABLING & ACTIVATING AIR BAG SYSTEM . 2. Remove off-road skid plate, if equipped. Remove CPA clip from connector and disconnect sensor hamess connector. Drill out rivets. Remove front end discriminating sensor. See Fig. 7 Installation To install. reverse removal procedure. Ensure arrow on sensor is installed pointing forward.2001 Chevrolet S10 Pickup 2001 ACCESSORIES/SAFETY EQUIPMENT General Motors Corp. - Air Bag Restraint Systems Install mounting rivets. Activate air bag system. See DISABLING & ACTIVATING AIR BAG SYSTEM . Check system for proper operation. See SYSTEM OPERATION CHECK FRONT OF Front-End WVEHICLE Discriminating Semsor & & Radiator A Support Mounting Rivets 98J13580 Fig. 7: Identifying Front End Discriminating Sensors Courtesy of GENERAL MOTORS CORP. STEERING WHEEL Removal 1. Before proceeding, see AIR BAG SAFETY PRECAUTIONS , Disable air bag system, See DISABLING & ACTIVATING AIR BAG SYSTEM Remove driver-side air bag module. See AIR BAG MODULES . Remove steering wheel horn contact by pressing inward to stop and rotating 90 degrees. Disconnect remaining steering wheel connectors, if equipped. Remove steering wheel nut. Using Nv2001 Chevrolet S10 Pickup 2001 ACCESSORIES/SAFETY EQUIPMENT General Motors Corp. - Air Bag Restraint Systems Steering Wheel Puller (J-1859-A), remove steering wheel. Installation 1. To install, reverse removal procedure. Tighten steering wheel nut to specification. See TORQUE SPECIFICATIONS . Install driver-side air bag module. See AIR BAG MODULES 2. Activate air bag system. See DISABLING & ACTIVATING AIR BAG SYSTEM Check system for proper operation, See SYSTEM OPERATION CHECK PASSENGER-SIDE AIR BAG MODULE DISABLE SWITCH Removal 1. Before proceeding, see AIR BAG SAFETY PRECAUTIONS . Disable air bag system. See DISABLING & ACTIVATING AIR BAG SYSTEM . 2. Remove instrument panel trim. Release 4 locking tabs on passenger-side air bag module disable switch and remove from instrument panel. Disconnect switch connector. Installation To install, reverse removal procedure, Activate air bag system. See DISABLING & ACTIVATING AIR BAG SYSTEM . Check m for proper operation. See SYSTEM OPERATION CHE! SIR COIL ASSEMBLY Removal 1. Before proceeding, see AIR BAG SAFETY PRECAUTIONS . Disable air bag system. See DISABLING & ACTIVATING AIR BAG SYSTEM . ide air bag module. See AIR BAG MODULES . Remove steering RING WHEEL 3. Remove driver-side knee bolster. Remove lower steering column cover trim cover screws and lower cover, Remove upper steering column cover mounting screw and remove upper cover 4, Remove wire harness straps. See Fig. 8 . Disconnect SIR coil connector, Remove retaining ring and SIR coil assembly, Remove wave washer and wire harness straps from steering column wire harness N Remove driver. wheel. See S1 Installation To install, reverse removal procedure. Ensure coil assembly hub and steering shaft are centered. To center coil assembly, see CENTERING COIL ASSEMBLY under ADTUISTMENTS Tighten unner and lower cteerine column covers and steerine wheel nut to2001 Chevrolet $10 Pickup 2001 ACCESSORIES/SAFETY EQUIPMENT General Motors Corp. - Air Bag Restraint Systems specification. See TORQUE SPECIFICATIONS . Activate air bag system. See DISABLING & ACTIVATING AIR BAG SYSTEM. Check system for proper operation. See SYSTEM OPERATION CHECK . Retaining Ring SIR Coil Assembly. Wave Washer. eH ©. wire Harness Straps 98F13578 Fig. 8: Identifying SIR Coil Assembly Courtesy of GENERAL MOTORS CORP. AIR BAG MODULES Removal (Driver-side) 1. Before proceeding, see AIR BAG SAFETY PRECAUTIONS . Disable air bag2001 Chevrolet S10 Pickup 2001 ACCESSORIES/SAFETY EQUIPMENT General Motors Corp. - Air Bag Restraint Systems system. See DISABLING & ACTIVATING AIR BAG SYSTEM . 2, Tum steering wheel 90 degrees to gain access to rear steering wheel holes, Insert screwdriver into each hole and push leaf springs to release air bag module retaining pins, See Fig. 9. Turn steering wheel 180 degrees to access remaining holes. Pull air bag module away from wheel. Disconnect air bag wire harness from clips on air bag module and steering wheel. Remove Connector Position Assurance (CPA) clip and disconnect driver-side air bag module Yellow 2-pin connector from air bag module. Remove air bag module. Installation 1. Install CPA clip and air bag module Yellow 2-pin connector to air bag module. Connect air bag wire harness to clips on steering wheel and air bag module. Install air bag module by pressing firmly into position on steering wheel to engage and latch leaf springs on notched pins. DO NOT pinch wires 2. Activate air bag system. See DISABLING & ACTIVATING AIR BAG SYSTEM Check system for proper operation. See SYSTEM OPERATION CHECK .2001 Chevrolet $10 Pickup 2001 ACCESSORIES/SAFETY EQUIPMENT General Motors Corp. - Air Bag Restraint Systems Leaf Spring Access Hole Yellow 2-Pin i). Connector 98013876 Fig. 9: Removing Driver-side Air Bag Module Courtesy of GENERAL MOTORS CORP. Removal (Passenger ) 1. Before proceeding, see AIR BAG SAFETY PRECAUTIONS . Disable air bag system. See DISABLING & ACTIVATING AIR BAG SYSTEM .2001 Chevrolet S10 Pickup 2001 ACCESSORIES/SAFETY EQUIPMENT General Motors Corp. - Air Bag Restraint Systems 2, Remove radio. Remove glove box door. Remove Connector Position Assurance (CPA) clip and disconnect passenger-side air bag module Yellow 2-pin connector. Remove 2 nuts and 2 bolts from air bag module. See Fig. 10. Remove passenger-side air bag module. Installation To install, reverse removal procedure, Tighten passenger-side air bag module nuts and bolts to specification, See TORQUE SPECIFICATIONS . Activate air bag system. See DISABLING & ACTIVAT. AIR BAG SYSTEM . Check system for proper operation, See SYSTEM OPERATION CHECK Passenger-Side Air Bag Module Instrument Panel ing Passenger-side Courtesy of GENERAL MOTOR: DIAGNOSTICS Bag Module ‘ORP.2001 Chevrolet $10 Pickup 2001 ACCESSORIES/SAFETY EQUIPMENT General Motors Corp. - Air Bag Restraint Systems WARNING: Accidental air bag deployment is possible. Personal injury could result. See AIR BAG SAFETY PRECAUTIONS . After component replacement, check system operation. See SYSTEM OPERATION CHECK . DIAGNOSTIC TROUBLE CODES (DTCS) Sensing & Diagnostic Module (SDM) provides a record of DTCs, stored according to type SDM performs diagnostic monitoring of SIR system electrical components and sets a Diagnostic Trouble Code (DTC) when a malfunction is detected. Current DTCs are stored in SDM and are erased when fault is corrected. Current DTCs can be read using a scan tool such as Tech 2. SCAN TOOL DIAGNOSTICS Scan Tool (Tech 2) reads and clears current and history codes. Ensure scan tool contains correct software cartridge for SIR diagnostics. To use scan tool, connect it to Data Link Connector (DLC), plug in power source and turn ignition switch to ON position. Follow scan tool manufacturer instructions for communication with SIR system. Scan tool reads serial data from SDM data link output terminal Ad at DLC terminal No. 2. DIAGNOSTIC PROCEDURES Diagnostic procedures are designed to find and repair SIR malfunctions. It is important to use diagnostic tests and follow sequence listed below: Perform SIR System Diagnostic Cheek SIR diagnostic system check should always be starting point for any SIR diagnostics. It checks for proper AIR BAG warning light operation and SIR trouble codes. See SIR DIAGNOSTIC SYSTEM CHECK under DIAGNOSTIC TESTS. Refer To Proper Diagnostic Test SIR diagnostic system check indicates correct test to diagnose SIR problems. Bypassing procedures may result in extended diagnostic time, incorrect diagnosis and incorrect parts replacement. Repeat SIR Diagnostic System Check Performing SIR diagnostic system check after all repair or diagnostic procedures ensures that repair has been made correctly and that no other conditions exist. DIAGNOSTIC TESTS DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION2001 Chevrolet S10 Pickup 2001 ACCESSORIES/SAFETY EQUIPMENT General Motors Corp. - Air Bag Restraint Systems Trouble Code Possible Cause] DTC BO0I6 Passenger deployment loop resistance low DTC BO0I7 Passenger deployment loop open| DTC BOOIs Passenger deployment loop voltage out of range| DTC B0022 Driver deployment loop resistance low DTC B0024 Driver deployment loop voltage out of range| DTC B0026 Driver deployment loop open| DTC B0035 Discriminating sensor closed or short to ground] DTC B0036 Discriminating sensor open or short to voltage| DTC BO0SI Deployment commanded| DTC B00S3 Deployment commanded with loop malfunction] DTC B0090 Disable switch voltage out of range| DTC BO009I Disable switch wrong state DTC B1000 SDM Malfunction DTC B1001 Option configuration error CONNECTOR IDENTIFICATION NOTE: Refer to illustrations to identify SIR connector terminals. See Fig. 41 -Fig. 17.2001 Chevrolet $10 Pickup 2001 ACCESSORIES/SAFETY EQUIPMENT General Motors Corp. - Air Bag Restraint Systems 17 16 15 14 13 12 11 10 G9eJ00363 Fig. 11: Identifying SDM Connector Terminals Courtesy of GENERAL MOTORS CORP.2001 Chevrolet $10 Pickup 2001 ACCESSORIES/SAFETY EQUIPMENT General Motors Corp. - Air Bag Restraint Systems nan "Bn 99E23766 Fig. 12: Identifying Passenger-side Air Bag Module Connector Terminals Courtesy of GENERAL MOTORS CORP.2001 Chevrolet $10 Pickup 2001 ACCESSORIES/SAFETY EQUIPMENT General Motors Corp. - Air Bag Restraint Systems g SIR Coil Connector Terminals sy of GENERAL MOTORS CORP.2001 Chevrolet $10 Pickup 2001 ACCESSORIES/SAFETY EQUIPMENT General Motors Corp. - Air Bag Restraint Systems 99J00389 14: Identifying Right Front End Discriminating Sensor Connector Terminals Courtesy of GENERAL MOTORS CORP.2001 Chevrolet $10 Pickup 2001 ACCESSORIES/SAFETY EQUIPMENT General Motors Corp. - Air Bag Restraint Systems 99H00395 15: Identifying Left Front End Discriminating Sensor Connector Terminals Courtesy of GENERAL MOTORS CORP.2001 Chevrolet $10 Pickup 2001 ACCESSORIES/SAFETY EQUIPMENT General Motors Corp. - Air Bag Restraint Systems G99G21812 16: Identifying Front End Discriminating Circuit In-line Connector (C109) Terminals Courtesy of GENERAL MOTORS CORP.2001 Chevrolet $10 Pickup 2001 ACCESSORIES/SAFETY EQUIPMENT General Motors Corp. - Air Bag Restraint Systems 99f00393 17: Identifying Passenger-side Air Bag Module Disable Switch Connector Terminals Courtesy of GENERAL MOTORS CORP. SIR DIAGNOSTIC SYSTEM CHECK WARNING: To avoid air bag deployment and injury when trouble shooting system, only use test equipment specified in diagnostic tests. Carefully follow all instructions. Diagnostic Procedure 1. Observe AIR BAG warning light while turning ignition on, If AIR BAG warning light2001 Chevrolet S10 Pickup 2001 ACCESSORIES/SAFETY EQUIPMENT General Motors Corp. - Air Bag Restraint Systems flashes 7 times and then goes off, go to next step. If AIR BAG warning light does not flash 7 times and go off, inspect vehicle for signs of damage or addition of aftermarket devices which could affect operation of AIR BAG warning light. If visual inspection is okay, go to AIR BAG WARNING LIGHT CIRCUIT MALFUNCTION | Connect scan tool to Data Link Connector (DLC), located under left side of instrument panel. Turn ignition on, If scan tool powers up, go to next step. If scan tool does not power up, inspect and repair data link communications circuits. N 3. If scan tool communicates with SDM, go to next step. If scan tool does not communicate with SDM, inspect and repair data link communications circuits, 4. Request SIR DTC display. If scan tool displays DTCs, go to next step. If scan tool does not display any DTCs, system is functioning normally 5. If scan tool displays DTCs that begin with "U", inspect and repair data link communications circuits. If other DTCs are displayed, perform appropriate diagnostic test. See DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION table. AIR BAG WARNING LIGHT CIRCUIT MALFUNCTION suit Description When ignition switch is turned on, AIR BAG warning light will flash 7 times, during which time Sensing and Diagnostic Module (SDM) tests SIR system. If no system faults are detected, SDM will turn AIR BAG warning light off. If a malfunction is detected, SDM will cause AIR BAG waming light to come on steady Diagnostic Aids If Ignition 1 (IG1) voltage is out of normal range, (9-16 volts), AIR BAG warning light will come on with no DTCs set. Loss of serial data communication between SDM and Instrument Panel Cluster (IPC) will also cause AIR BAG warning light to come on. NOTE: For circuit number and wire color identification, see WIRING DIAGRAMS . Diagnostic Procedure 1. If SIR diagnostic system check has been performed, go to next step. If SIR diagnostic system check has not been performed, go to SIR DIAGNOSTIC SYSTEM CHECK 2. Check Instrument Panel Cluster (IPC) for correct operation. If IPC is working correctly, go to next step. If IPC is not working correctly, diagnose and repair IPC. Go to step 16 3. Tum ignition off. Check AIR BAG warning light for correct operation when turning ignition on. If AIR BAG warning light flashes 7 times, go to next step. If AIR BAG warning light does not flash 7 times, go to step 13 . 4. Install scan tool to Data Link Connector (DLC), located under left side of instrument2001 Chevrolet S10 Pickup 2001 ACCESSORIES/SAFETY EQUIPMENT General Motors Corp. - Air Bag Restraint Systems panel. Turn ignition on. Using scan tool, establish communication with Instrument Panel Cluster (IPC). If DTC U1088 is not retrieved, go to next step. If DTC U1088 is retrieved, diagnose and repair data link communication circuits. 5. Using scan tool, turn AIR BAG waming light on. If AIR BAG warning light comes on, go to next step. If AIR BAG warning light does not come on, go to step 13 6. Using scan tool, establish communication with SDM and request SIR data list. If ignition voltage displayed is more than 9 volts, go to next step. If ignition voltage is 9 volts or less, go to step 8 7. Ifignition voltage is more than 16 volts, inspect vehicle electrical system. If ignition voltage is 16 volts or less, go to step 15 . 8. Turn ignition off. Disconnect SDM connector. If SDM connector shows signs of corrosion, poor connections or damage, go to step 14 . If SDM connector is okay, go to next step. 9. Turn ignition off. Using Digital Multimeter (J-39200) with Test Adapter Kit (J-35616- A), inspect circuit 1139 for an open or high resistance between fuse block and SDM harn sonnector terminal A1. If resistance is 2 ohms or less, go to step 11 . If resistance is more than 2 ohms, go to next step. 10. Repair open or high resistance in circuit 1139. See WIRE REPAIR . Go to step 16 11. Tur ignition on. Measure voltage between battery side of SIR fuse terminal and ground. If voltage is near 12 volts, go to next step. If voltage is not near 12 volts, locate and repair source of voltage loss. Go to step 16 12. Turn ignition off. Measure resistance between SDM terminal A18 and ground. If. resistance is less than 2 ohms, go to step 15 . If resistance is 2 ohms or more, repair high resistance in circuit 1851. See WIRE REPAIR . Go to step 16 13. Replace Instrument Panel Cluster. Go to step 16 14. Replace SDM connector. See WIRE REPAIR . Go to step 16 . 15. Replace SDM. See SENSING & DIAGNOSTIC MODULE (SDM) under REMOVAL & INSTALLATION. Go to next step 16. Reconnect all SIR system components. Ensure that all components are properly mounted. Go to SIR DIAGNOSTIC SYSTEM CHECK DTC B0016 : PASSENGER DEPLOYMENT LOOP RESISTANCE LOW Cireuit Description When ignition is first turned on, Sensing and Diagnostic Module (SDM) performs tests to diagnose critical internal malfunctions. SDM then performs tests on deployment loop to check for continuity and shorts to ground or voltage. Conditions For Setting DTC DTC will set if deployment loop resistance is less than 1.3 ohms for 500 milliseconds2001 Chevrolet S10 Pickup 2001 ACCESSORIES/SAFETY EQUIPMENT General Motors Corp. - Air Bag Restraint Systems Action Taken SDM turns on AIR BAG warning light and sets DTC. Conditions For Clearing DTC Current DTC clears when a CLEAR CODES command is issued via scan tool. History DTC will clear once 255 malfunction free ignition cycles have occurred. Diagnostic Aids Condition could be caused by a short between circuits 1403 and 1404. A malfunctioning shorting bar on passenger-side air bag connector could also cause condition NOTE: For circuit number and wire color identification, see WIRING DIAGRAMS . Diagnostic Procedure I. If SIR diagnostic system check has been performed, go to next step. If SIR diagnostic system check has not been performed, go to SIR DIAGNOSTIC SYSTEM CHECK Turn ignition off. Disconnect passenger-side air bag module Yellow 2-pin connector located above right-side of instrument panel. See Fig. 3 . If connector is damaged or corroded, go to next step. If connector is okay, go to step 4 N 3. Ifharness side of connector is damaged, replace connector. See WIRE REPAIR . Go to step 10 . If passenger-side air bag connector is damaged, replace passenger-side air bag module. See AIR BAG MODULES under REMOVAL & INSTALLATION. Go to step 10. 4. Reconnect passenger-side air bag module Yellow 2-pin connector. Ensure Connector Position Assurance (CPA) clip is installed correctly. Turn ignition on. Using scan tool, check for SIR DTCs. If DTC B0016 is retrieved, go to next step. If DTC B0016 is not retrieved, g0 to DIAGNOSTIC AIDS, 5. Tum ignition off. Disconnect passenger-side air bag module Yellow 2-pin connector located at base of steering column. Install SIR Driver-Passenger Load Tool (J-38715- A) using Load Tool Adapter (J38715-5) to harness connector. Turn ignition on. Using scan tool, check for SIR DTCs. If DTC B0016 is retrieved, go to step 7 . If DTC B0016 is not retrieved, go to next step. 6. Turn ignition off. Replace passenger-side air bag. See AIR BAG MODULES under REMOVAL & INSTALLATION. Go to step 10 7. Turn ignition off. Remove SIR Driver-Passenger Load Tool (J-38715-A) from harness connector. Disconnect SDM harness connector. Using Digital Multimeter (J-39200) with Test Adapter Kit (J-35616-A), measure resistance between SDM harness connector terminals A3 and A8. If resistance is not infinite, go to next step. If resistance is infinite, go to step 9