SIR Driver Load Tool

*** FOR UPDATED INFORMATION NOT INCLUDED HERE, REFER TO TSB #316109 DATED JAN, 1994

The SIR Driver Load Tool J 37808 is used only when called for.

It is used as a diagnostic aid and safety device to prevent inadvertent inflater module deployment.

The load tool has three yellow connectors attached to its case. The two small connectors are electrically functional and serve as resistive load substitutions. The large dummy connector does not serve as a load substitution but merely takes the physical place of the DERM connector when needed.

No more than two connectors are used at any one time. One of the small connectors is used to substitute the load of the inflater module when it is connected at the top of the column to the SIR coil wire. Another small connector is used to substitute the load of the inflater module and the SIR coil wire when it is connected at the base of the column to the vehicle harness. The large dummy connector separates the shorting bar in the SIR DERM harness connector when it is connected to it in place of the DERM.

By substituting the resistance of the load tool when called for, a determination can be made as to whether an inflater circuit component is causing system faults and which component is causing the fault. The load tool should be used only when specifically called for in the diagnostic procedures.