2010 Cadillac CTS Sedan AWD V6-3.6L Page 172
* The SDM has received a Not OK (NOK) message from the sensor.
* The SDM has not received a message.
B0083 3A, B0084 3A, B0085 3A, B0086 3A, B0087 3A, or B0088 3A
* The SDM has received an ID message from the sensor which does not match the ID stored in the SDM memory.
* The SDM has reset the sensor twice without detecting the correct ID message.
Action Taken When the DTC Sets
* The SDM commands the AIR BAG indicator ON.
* The SIR system is disabled and no deployments are allowed.
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.
Reference Information
Schematic Reference
SIR Schematics (See: Diagrams/Electrical Diagrams/Air Bag Systems)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
SIR System Description and Operation (See: Restraints and Safety Systems/Air Bag Systems/Description and Operation/SIR System Description
and Operation)
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/Circuit Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/Circuit
Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/Wiring Repairs/Wiring Repairs)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning)for scan tool information
Circuit/System Testing
Note: When removing connectors, inspect for damage or corrosion. Damage or corrosion in the following requires repair or replacement of the
affected component/connector:
* The impact sensor
* The SDM
* The impact sensor wiring harness connector
* The SDM wiring harness connector
1. Ignition OFF, disconnect the harness connector at the appropriate impact sensor and the harness connector at the SDM.
2. Test for infinite resistance between the signal circuit terminal B and ground.
瀚慖f less than the specified range, test the signal circuit for a short to ground.
3. Ignition ON, test for less than 1 V between the signal circuit terminal B and ground.
瀚慖f greater than the specified range, test the circuit for a short to voltage.
4. Test for less then 1 ohm between the appropriate low reference circuit terminal at the sensor and the appropriate low reference circuit
terminal at the SDM:
* Left Front Sensor - Low Reference circuit terminal 2 at the sensor and the low reference circuit terminal 24 X2 at the SDM.
* Right Front End Sensor - Low Reference circuit terminal 2 at the sensor and the low reference circuit terminal 25 X2 at the SDM.
* Left Front Side Sensor - Low Reference circuit terminal 1 at the sensor and the low reference circuit terminal 19 X2 at the SDM.
* Right Front Side Sensor - Low Reference circuit terminal 1 at the sensor and the low reference circuit terminal 22 X2 at the SDM.
* Left Rear Side Sensor - Low Reference circuit terminal 2 at the sensor and the low reference circuit terminal 28 X2 at the SDM.
* Right Rear Side Sensor - Low Reference circuit terminal 2 at the sensor and the low reference circuit terminal 29 X2 at the SDM.
瀚慖f greater than the specified range, test the circuit for an open/high resistance.
