• | 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. |
Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
---|---|---|---|---|
Side Impact Module - RF High Circuit | B0030 | B0030 | B0029 | B0028 |
Side Impact Module - RF Low Circuit | B0030 | B0030 | B0029 | 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 roof rail module - right. 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 roof rail module - right connector which will short together both roof rail module - right 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.
• | The side impact module - RF high circuit is less than 2.4 volts and the side impact module - RF deployment loop is greater than 6 ohms for 500 milliseconds. |
• | The side impact module - RF deployment loop resistance is more than 4.8 ohms for 500 milliseconds. |
• | The side impact module - RF high and/or low circuits has a short to ground or short to voltage for 500 milliseconds. |
• | The 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 requests the instrument panel cluster (IPC) to illuminate the AIR BAG indicator. |
• | The SIR system is disabled and no deployments are allowed. |
• | The condition for setting the DTC no longer exists. |
• | A history DTC will clear once 100 malfunction-free ignition cycles have occurred. |
If there is more than one DTC set diagnose the open DTC first.
SIR System Description and Operation
Control Module References for scan tool information
J 38715-A Driver/Passenger Load tool
Important: When removing the connectors, inspect for damage or corrosion. Damage or corrosion to the following requires repair or replacement of the affected component/connector:
• Inflatable restraint module • SDM module • Front side impact module wiring harness connector • SDM wiring harness connector
Important: The connector and connector position assurance (CPA) may seat independent of each other. Both the connector and CPA should seat with an audible and/or tactile click. The CPA isolates the shoring-bars within the connector allowing the deployment circuit to operate properly.
⇒ | If the above condition is not found, make the appropriate repair. |
⇒ | If a DTC is not set or is set as history, cycle the ignition OFF, disconnect the load tool and adapter, reconnect the harness connector at the RF inflatable restraint side impact module, and cycle the ignition ON. If the DTC resets after reconnecting the module, replace the RF inflatable restraint side impact module. |
⇒ | If greater than the specified range, test the circuit for a short to voltage. |
⇒ | If greater than the specified range, test the circuit for a short to voltage. |
⇒ | If less than the specified value, test the circuit for a short to ground. |
⇒ | If less than the specified value, test the circuit for a short to ground. |
• | With RPO code AJ7 terminal C3 |
• | With RPO code AW9 terminal 19 |
⇒ | If greater than the specified range, test the signal circuit for an open/high resistance. |
• | With RPO code AJ7 terminal C4 |
• | With RPO code AW9 terminal 18 |
⇒ | If greater than the specified range, test the signal circuit for an open/high resistance. |
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
• | Control Module References for SDM replacement, setup, and programming |