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Right rear side impact sensor terminal B Left rear side impact sensor terminal B If greater than the specified range, test the circuit for a short to voltage. 4. Ignition ON, test for less than 1 volt between the low reference circuit and ground. Right front end sensor terminal 2 Left front end sensor terminal 2 Right front side impact sensor terminal A Left front side impact sensor terminal A Right rear side impact sensor terminal A Left rear side impact sensor terminal A If greater than the specified range, test the circuit for a short to voltage. 5. Test for infinite resistance between the signal circuit and ground. Right front end sensor terminal 1 Left front end sensor terminal 1 Right front side impact sensor terminal B Left front side impact sensor terminal B Right rear side impact sensor terminal B Left rear side impact sensor terminal B If less than infinite resistance, test the circuit for a short to ground. 6. Test for less than 1 ohm between the following signal circuit terminals. Right front end sensor terminal 1 and SDM harness connector terminal 37. Left front end sensor terminal 1 and SDM harness connector terminal 36. Right front side impact sensor terminal B and the SDM harness connector terminal 43. Left front side impact sensor terminal B and the SDM harness connector terminal 42. Right rear side impact sensor terminal B and the SDM harness connector terminal 45. Left rear side impact sensor terminal B and the SDM harness connector terminal 44. If greater than the specified range, test the circuit for an open/high resistance. 7. Test for less then 1 ohm between the following front end sensor low reference circuit terminals. Right front end sensor terminal 2 and SDM harness connector terminal 39. Left front end sensor terminal 2 and SDM harness connector terminal 38. Right front side impact sensor terminal A and the SDM harness connector terminal 41.
2008 Chevrolet Silverado 1500 2008 RESTRAINTS Supplemental Inflatable Restraints - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
Left front side impact sensor terminal A and the SDM harness connector terminal 40. Right rear side impact sensor terminal A and the SDM harness connector terminal 47. Left rear side impact sensor terminal A and the SDM harness connector terminal 46. If greater than the specified range, test the circuit for an open/high resistance. 8. If all circuits test normal, replace the appropriate sensor. 9. Reconnect all SIR components. Ignition ON, with a scan tool clear and check for DTCs. If the DTC returns and is current, replace the SDM. Repair Procedures Perform the Diagnostic Repair Verification after completing the diagnostic procedure. Inflatable Restraint Front End Sensor Replacement (2500, 3500) or Inflatable Inflatable Restraint Side Impact Sensor Replacement (Extended Cab) or Inflatable SIR/SRS Wiring Repairs Control Module References for SDM replacement, setup, and programming DTC B0090 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. Diagnostic Procedure Instructions provides an overview of each diagnostic category. DTC Descriptors DTC B0090 00 Rollover Sensor No Additional Information DTC B0090 0F Rollover Sensor Erratic DTC B0090 3A
2008 Chevrolet Silverado 1500 2008 RESTRAINTS Supplemental Inflatable Restraints - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
Rollover Sensor Incorrect Component Installed DTC B0090 39 Rollover Sensor Internal Electronic Failure DTC B0090 71 Rollover Sensor Invalid Serial Data Received Diagnostic Fault Information Circuit/System Description The inflatable restraint vehicle rollover sensor (ROS) utilizes battery power supply and a Conditions for Running the DTC Ignition voltage is between 9-16 volts. Conditions for Setting the DTC All of the following conditions must exist for 5 seconds: B0090 0F The SDM received a fault present message from the ROS. The ROS is in assembly plant mode and the SDM is in production mode. Circuit Short to Ground High Resistance Open Short to Voltage Signal Performance Battery Positive Voltage B0090 0F B0090 0F B0090 0F - B0090 0F Roll Over Sensor Ground - B0090 0F B0090 0F - B0090 0F Roll Over Sensor High B0090 0F B0090 0F B0090 0F B0090 0F B0090 0F
2008 Chevrolet Silverado 1500 2008 RESTRAINTS Supplemental Inflatable Restraints - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
The SDM has not received any data from the ROS. B0090 3A The SDM has received an ID message from the vehicle rollover sensor which does not The SDM has reset the vehicle rollover sensor twice without detecting the correct ID B0090 39 The SDM has received a Not Ok (NOK) message from the vehicle rollover sensor. The SDM has not received a message. B0090 71 The SDM has received invalid serial data from the vehicle rollover sensor. Action Taken When the DTC Sets The SDM commands the AIR BAG indicator ON. The side air bag deployment loops will be disabled for rollover events only. For side impact 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 If either the SDM or vehicle rollover sensor were replaced verify that the correct part numbers Reference Information Schematic Reference SIR Schematics Connector End View Reference
2008 Chevrolet Silverado 1500 2008 RESTRAINTS Supplemental Inflatable Restraints - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
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