Important: Always perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
Circuit | Short to Ground | High Resistance | Open | Short to Voltage | Signal Performance |
---|---|---|---|---|---|
Side Impact Module - RF High Circuit | B0030 | B0030 | B0029 | B0030 | B0028 |
Side Impact Module - RF Low Circuit | B0030 | B0030 | B0029 | B0030 | B0028 |
During a side or frontal crash of sufficient force the inflatable restraint sensing and diagnostic module (SDM) will allow current to flow through the deployment loop in order to deploy the side impact module - RF. The SDM performs continuous diagnostic tests on the deployment loops to check for proper circuit continuity and for shorts to ground or voltage. A shorting bar used within the side impact module - RF connector which will short together both side impact module - RF high and low circuits when the connector is disconnected, this will help to prevent unwanted deployment of the inflator module during servicing.
Ignition voltage is between 9-16 volts.
The side impact module - RF deployment loop resistance is less than 1.3 ohms for 500 milliseconds.
• | Side impact module - RF high circuit is less than 2.4 volts and the side impact module - RF deployment loop is more than 6 ohms for 500 milliseconds. |
• | Side impact module - RF deployment loop resistance is more than 4.8 ohms for 500 milliseconds. |
• | Side impact module - RF high and/or low circuits is short to ground or short to voltage for 500 milliseconds. |
• | Side impact module - RF high circuit is less than 2.4 volts and side impact module - RF deployment loop resistance is less than 6 ohms for 500 milliseconds. |
• | The SDM commands the AIR BAG indicator ON via serial data communication. |
• | The SIR System is disabled and no deployments are allowed. |
• | 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. |
If there is more than one DTC set diagnose the open DTC first.
• | J 38715-A SIR Driver/Passenger Load tool |
• | J 38715-30A SIR Load Tool Adapter |
• | J 38715-60 SIR Load Tool Adapter |
Important: Important: When removing connectors inspect for damage or corrosion. Damage or corrosion in the following requires repair or replacement of the affected component/connector.
• The SDM module • The side impact module - RF • The side impact module wiring harness • The SDM wiring harness connector • The side impact module - RF wiring harness connector • The side impact module wiring harness connector
⇒ | If DTC B0028, B0029, or B0030 is current turn OFF the ignition and remove the SDM connector. Refer to SDM replacement in Repair Instructions for connector location. |
⇒ | Test and repair both side impact module - RF high and low circuits for a short to voltage, short to ground, or open/low resistance. If all circuits test normal then replace the SDM |
⇒ | If DTC B0028, B0029, or B0030 is current, replace the side impact module - RF wiring harness. |
Important: Always perform the Diagnostic Repair Verification after completing the diagnostic procedure.
• | Control Module References for SDM replacement, setup, and programming |