resetting codes
Mckinley
Last edited by MckinleyC5; Apr 7, 2009 at 10:13 AM.
Mckinley
http://www.stengel.net/diccodes.htm
Mckinley





BC
I went through and pulled the codes the way the website instructs you to, I then went through and reset all the codes, there were 7 codes all together. They all had the H after them, meaning they were history codes. All of them would reset with the exception of 2, they both were on the BCM. I call the dealer that I bought the parts from and they told me that I had to have it hooked to a computer in order to reset those 2. I took the car yesterday evening to a full service tech (friend) so he could reset them. His scanner would read the same codes but could not reset them. Then we found out it had to be a Tech II scanner. I called a dealer that is just right down the road and they told me that they could reset them and it would cost about $80 or $85. I took it straight down there, they got me in and within 10 minutes the tech come back and tells me they are hard codes that he can not reset. I told him what I knew, he repeated the codesto me, they were the exact same, B0026 and B0051. I told he again that I already knew that. I thought with the tech II scanner you could go in and reconfigure the BCM. He told me that you could not and it looked like maybe a wire was loose or a connector might not be making contact and that he could go in, take it apart and trouble shoot it. Trouble shoot it at $85 an hour. I told him "No Thanks, just bring me my car back" and the guy behind the counter that made the appointment overheard our conversation then procceeded to tell me that if everything was working and making contact that it will all reset itself on its own. I then asked myself why I would even make the appointment if it should have reset itself. After all that, his tech spending 10 minutes with my car, 5 of which was spent putting plastic over the seat, getting in the car, and then adjusting the seat, he was going to charge me for wasting my time and not doing what he said he could do.
Stay away from Bill Gatton. They don't seem to know what they think they do. They will tell you one thing and then turn right around and tell you something totally different. They could run your bill up real quick if your not careful.




Repairs and Inspections Required After a Collision
Caution
Proper operation of the SIR sensing system requires that any repairs to the vehicle structure return the vehicle structure to the original production configuration. Not properly repairing the vehicle structure could cause non-deployment in a collision or deployment for conditions less severe than intended.
After a collision, the following components need to be inspected as indicated. If any damage is detected, replace the component. If damage to the mounting points or mounting hardware is detected, repair or replace the mounting points and mounting hardware as needed.
- Steering column - Perform the steering column accident damage checking procedures. Refer to Steering Column Accident Damage Inspection in Steering Wheel and Column.
- I/P Knee Bolsters and Mounting Points - Inspect the knee bolsters for bending, twisting, buckling, or any other type of damage.
- I/P brackets, braces, etc. - Inspect for bending, twisting, buckling, or any other type of damage.
- Seat Belts - Perform the seat belt operational and functional checks. Refer to Operational and Functional Checks in Seat Belts.
- Seats and Seat Mounting Points - Inspect for bending, twisting, buckling, or any other type of damage.
Frontal Inflator Module Deployment - Component Replacement and Inspections
After a collision involving frontal air bag deployment, replace the following components.
- Inflatable restraint I/P module
- Inflatable restraint steering wheel module
- Inflatable restraint sensing and diagnostic module (SDM)
- Steering wheel module coil and coil wiring pigtail - Inspect for melting, scorching, or other damage due to excessive heat.
- Mounting points and mounting hardware for the I/P module, steering wheel module, and SDM - Inspect for damage and repair or replace each component as needed.
Circuit Description
The inflatable restraint sensing and diagnostic module (SDM) contains a sensing device that converts vehicle velocity changes into an electrical signal. The SDM compares this electrical signal to a value stored in memory. When the generated signal exceeds the stored value, the SDM performs additional signal processing and compares the generated signals to values stored in memory. When two of the generated signals exceed the stored values, the SDM will cause current to flow through the inflator modules, deploying the air bags, and causing DTC B0051 to set.
Conditions for Running the DTC
Ignition 1 Voltage is within the normal operating voltage range.
Conditions for Setting the DTC
The SDM detects a frontal crash of sufficient force to warrant deployment of the frontal air bags.
Action Taken When the DTC Sets
- The SDM commands the AIR BAG indicator ON.
- The SDM records crash data.
DTC B0051 is a latched code which cannot be cleared. Replace the SDM after following the instructions in the diagnostic table.
Did you perform the Diagnostic System Check-SIR?
- Turn OFF the ignition.
- Inspect the vehicle for signs of inflator module deployment.
Does the vehicle show any signs of impact/collision?
Did you complete the replacement?
- Install a scan tool.
- Turn ON the ignition, with the engine OFF.
- With the scan tool request the SIR DTC display.
- If a history DTC exists, refer to Diagnostic Aids for that specific DTC and diagnose the problem.
- Replace components and perform inspections as required following an accident. Refer to Repairs and Inspections Required After a Collision .
- Use the scan tool in order to clear the DTCs.
- Operate the vehicle within the Conditions for Running the DTC as specified in the supporting text.
Caution
If the vehicle interior is exposed to moisture and becomes soaked up to the level of the sensing and diagnostic module (SDM), the SDM and SDM harness connector must be replaced. The SDM could be activated when powered, which could cause airbag deployment and result in personal injury.
- Disable the SIR system. Refer to SIR Disabling and Enabling Zone 4 .
- Remove the accessory trim plate. Refer to Trim Plate Replacement - Instrument Panel (I/P) Accessory in Instrument Panel, Gages and Console.
- Remove the heater and A/C control head.
- Remove the connector position assurance (CPA) from the SDM harness connector.
- Disconnect the SDM harness connector.
- Remove the SDM (3) mounting fasteners (2).
- Remove the SDM from the I/P center support system (1).
- Remove any dirt, grease, or other impurities from the mounting surface.
- Install the SDM (3) horizontally to the I/P center support system (1).
- Point the arrow on the SDM toward the front of the vehicle.
Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.
- Install the SDM mounting fasteners (2). Tighten
- Install the SDM harness connector to the SDM.
- Install the CPA to the SDM harness connector.
- Install the heater and A/C control head.
- Install the accessory trim plate. Refer to Trim Plate Replacement - Instrument Panel (I/P) Accessory in Instrument Panel, Gages and Console.
The AIR BAG indicator may remain ON after the SDM has been replaced. DTC B1001 may set requiring the SDM part number to be set in multiple modules. If the indicator remains ON after enabling the SIR system, perform the diagnostic system check and follow the steps thoroughly to ensure that the SDM is set properly.
- Enable the SIR system. Refer to SIR Disabling and Enabling Zone 4 .
- DTC B0022 will set when the steering wheel module deployment loop resistance is less than 1.3 ohms for 300 milliseconds.
- DTC B0024 will set when one of the following conditions occur:
- Steering wheel module high circuits is more than 6 volts for 300 milliseconds.
- Steering wheel module high circuit is less than 2 volts and steering wheel module deployment loop resistance is less than 6 ohms for 300 milliseconds.
- DTC B0026 will set when one of the following conditions occurs:
- Steering wheel module high circuit is less than 2 volts and the steering wheel module deployment loop resistance is more than 4.8 ohms for 500 milliseconds.
- Steering wheel module deployment loop resistance is more than 6 ohms for 300 milliseconds.
- The condition responsible for setting the DTC no longer exists and the scan tool Clear DTCs function is used.
- A history DTC will clear once 255 malfunction free ignition cycles have occurred.
The following are possible causes of the malfunction:
- A short between the steering wheel module high and low circuits.
- An open or a high resistance in the steering wheel module high or low circuits.
- A short to ground or a short to voltage in the steering wheel module high or low circuits.
- The steering wheel module coil connector
- The SDM connector
- A malfunctioning steering wheel module
- A malfunctioning steering wheel module coil
- A malfunctioning SDM
5. This step tests to see if the malfunction is caused by the steering wheel module or by the steering wheel module coil.
7. This step tests to see what DTCs are present. If DTC B0022 is present, test for a short between the steering wheel module high and low circuits. If DTC B0024 is present, test the steering wheel module high and low circuits for an open and for high resistance. If DTC B0026 is present, test the steering wheel module high and low circuits for an open and for high resistance.
- Turn OFF the ignition.
- Disconnect the steering wheel module coil connector. Refer to Inflatable Restraint Steering Wheel Module Coil Replacement .
- Inspect the component and harness sides of the steering wheel module coil connector for damage or corrosion that may cause the malfunction. Refer to Testing for Intermittent and Poor Connections and Connector Repairs in Wiring Systems.
- If the component side of the steering wheel module coil connector is damaged, the steering wheel module coil must be replaced. Refer to Inflatable Restraint Steering Wheel Module Coil Replacement .
- If the wiring harness side of steering wheel module coil connector is damaged, replace the harness side of the connector. Refer to Connector Repairs in Wiring Systems.
- Install the J 38715-A SIR Driver/Passenger Load Tool to the harness side of the steering wheel module coil connector. Use BASE OF COLUMN connector.
- Turn ON the ignition, with the engine OFF.
- Use the scan tool to request SIR DTCs displayed.
- Turn OFF the ignition.
- Disconnect and remove the J 38715-A .
- Connect the steering wheel module coil connector.
- Remove the steering wheel module. Refer to Inflatable Restraint Steering Wheel Module Replacement .
- Use the J 38715-30A adapter to connect the J 38715-A to the upper steering wheel module coil connector on top of the steering column. Use STEERING COLUMN connector.
- Turn ON the ignition, with the engine OFF.
- Use the scan tool to request SIR DTCs displayed.
- Turn OFF the ignition.
- Disconnect and remove the J 38715-A and adapter.
- Disconnect the inflatable restraint sensing and diagnostic module (SDM) connector. Refer to Inflatable Restraint Sensing and Diagnostic Module Replacement .
- Inspect the SDM connector for damage or corrosion that may cause a malfunction in the steering wheel module high and/or low circuits. Refer to Testing for Intermittent and Poor Connections and Connector Repairs in Wiring Systems.
- If DTC B0022 is present, test for a short between the steering wheel module high and low circuits.
- If DTC B0024 is present, test the steering wheel module high and low circuits for a short to ground or a short to voltage.
- If DTC B0026 is present, test the steering wheel module high and low circuits for an open or high resistance.
- All the above conditions refer to Circuit Testing and Wiring Repairs in Wiring Systems.
- Turn OFF the ignition.
- Replace the steering wheel module. Refer to Inflatable Restraint Steering Wheel Module Replacement .
- Turn OFF the ignition.
- Replace the steering wheel module coil. Refer to Inflatable Restraint Steering Wheel Module Coil Replacement .
- Turn OFF the ignition.
- Replace the SDM. Refer to Inflatable Restraint Sensing and Diagnostic Module Replacement .
- Connect all SIR components.
- Turn ON the ignition, with the engine OFF.
- Use the scan tool in order to clear the DTCs.
- Operate the vehicle within the Conditions for Running the DTC as specified in the supporting text.
Bill
Last edited by Bill Dearborn; Jul 28, 2009 at 04:15 PM.
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