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There are 2 shorting bars used within each connector which will short together both steering Conditions for Running the DTC Ignition voltage is between 9-16 volts. Conditions for Setting the DTC B0012 01 Stage 1 or B0013 01 Stage 2 The steering wheel module high and/or low circuit is short to voltage for 120 milliseconds. B0012 02 Stage 1 or B0013 02 Stage 2 The steering wheel module high and/or low circuit is short to ground for 120 milliseconds. B0012 04 Stage 1 or B0013 04 Stage 2 The steering wheel module high and/or low circuit is open for 120 milliseconds. B0012 0D Stage 1 or B0013 0D Stage 2 The steering wheel module deployment loop resistance is greater than 5.1 ohms for 120 B0012 0E Stage 1 or B0013 0E Stage 2 The steering wheel module deployment loop resistance is less than 1.3 ohms for 120 milliseconds. Action Taken When the DTC Sets The SDM commands the AIR BAG indicator ON. The SDM will store a DTC, if an event occurs the system will still attempt deployments. Conditions for Clearing the DTC The condition for setting the DTC no longer exists. A history DTC will clear once 100 malfunction-free ignition cycles have occurred. Diagnostic Aids
2008 Chevrolet Silverado 1500 2008 RESTRAINTS Supplemental Inflatable Restraints - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
When a harness connector is disconnected, the high control and low control circuits are This DTC usually indicates a poor connection or a wiring malfunction between the SDM Reference Information Schematic Reference SIR Schematics Connector End View Reference Component Connector End Views Description and Operation SIR System Description and Operation Electrical Information Reference Circuit Testing Connector Repairs Testing for Intermittent Conditions and Poor Connections Wiring Repairs Scan Tool Reference Control Module References for scan tool information Special Tools Required J 38715-A SIR Driver/Passenger Load Tool Circuit/System Testing IMPORTANT: When removing connectors inspect for damage, corrosion or poor connection. Damage or corrosion in the following requires
2008 Chevrolet Silverado 1500 2008 RESTRAINTS Supplemental Inflatable Restraints - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
1. Verify that the steering wheel module connector and the connector position assurance (CPA) are engaged. If the above condition is found, make the appropriate repair. 2. Ignition OFF, disconnect the steering wheel module. 3. With the appropriate adaptor, connect special tool J 38715-A . 4. Ignition ON, with a scan tool, verify DTC is set as current. If DTC is not set or is set as history, replace the steering wheel module. 5. Ignition OFF, disconnect special tool J 38715-A . 6. Disconnect the steering wheel module coil in-line connector. 7. With the appropriate adaptor, connect special tool J 38715-A . 8. Ignition ON, with a scan tool, verify DTC is set as current. If DTC is not set or is set as history, replace the steering wheel module coil. 9. Ignition OFF, disconnect special tool J 38715-A and the appropriate adaptor. 10. Disconnect the harness connector at the SDM. 11. Ignition ON, test for less than 1 volt between the appropriate high circuit and ground. Steering wheel module coil connector Stage 1 terminal A (X1) Steering wheel module coil connector Stage 2 terminal A (X2) If not the specified range, test the circuit for a short to voltage. 12. Test for less than 1 volt between the appropriate low circuit and ground. Steering wheel module coil connector Stage 1 terminal B (X1) Steering wheel module coil connector Stage 2 terminal B (X2) The pretensioner The air bag module The SDM module The air bag wiring harness connector The SDM wiring harness connector IMPORTANT: The connector and CPA may seat independent of each other. Both the connector and CPA should seat with an audible
2008 Chevrolet Silverado 1500 2008 RESTRAINTS Supplemental Inflatable Restraints - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
If not the specified range, test the circuit for a short to voltage. 13. Ignition OFF, test for infinite resistance between the appropriate high circuit and ground. Steering wheel module coil connector Stage 1 terminal A (X1) Steering wheel module coil connector Stage 2 terminal A (X2) If not the specified range, test the circuit for a short to ground. 14. Test for infinite resistance between the appropriate low circuit and ground. Steering wheel module coil connector Stage 1 terminal B (X1) Steering wheel module coil connector Stage 2 terminal B (X2) If not the specified range, test the circuit for a short to ground. 15. Test for less then 1 ohm between the SDM connector and the air bag module connector high circuit. Steering wheel module coil connector Stage 1 terminal A (X1) and SDM terminal 9 Steering wheel module coil connector Stage 2 terminal A (X2) and SDM terminal 5 If not the specified range, test the circuit for an open/high resistance. 16. Test for less then 1 ohm between the SDM connector and the air bag module connector low circuit. Steering wheel module coil connector Stage 1 terminal B (X1) and SDM terminal 8 Steering wheel module coil connector Stage 2 terminal B (X2) and SDM terminal 4 If not the specified range, test the circuit for an open/high resistance. 17. If all circuits test normal, replace the SDM. Repair Procedures Perform the Diagnostic Repair Verification after completing the diagnostic procedure. Inflatable Restraint Steering Wheel Module Coil Replacement Inflatable Restraint Steering Wheel Module Replacement SIR/SRS Wiring Repairs Control Module References for SDM replacement, setup, and programming DTC B0014-B0045 Diagnostic Instructions Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. Review Strategy Based Diagnosis for an overview of the diagnostic approach.
2008 Chevrolet Silverado 1500 2008 RESTRAINTS Supplemental Inflatable Restraints - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
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