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 provide an overview of each diagnostic category. |
DTC Descriptors
DTC B0016 01: Left Roof Rail Deployment Loop Short to BatteryDTC B0016 02: Left Roof Rail Deployment Loop Short to Ground
DTC B0016 04: Left Roof Rail Deployment Loop Open Circuit
DTC B0016 0D: Left Roof Rail Deployment Loop Resistance Above Threshold
DTC B0016 0E: Left Roof Rail Deployment Loop Resistance Below Threshold
Diagnostic Fault Information
Circuit | Short to Ground | High Resistance | Open | Short to Voltage | Signal Performance |
|---|---|---|---|---|---|
Left Roof Rail Module High Control | B0016 02 | B0016 0D | B0016 04 | B0016 01 | B0016 0E |
Left Roof Rail Module Low Control | B0016 02 | B0016 0D | B0016 04 | B0016 01 | B0016 0E |
Circuit/System Description
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 side rail module. 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 connector will short together both roof rail module - left high and low circuits when the connector is disconnected; this will help to prevent unwanted deployment of the inflator module during servicing.
Conditions for Running the DTC
Ignition voltage is between 9-16 volts.
Conditions for Setting the DTC
B0016 01
The roof rail module - left high and/or low circuit is short to voltage for 120 milliseconds.
B0016 02
The roof rail module - left high and/or low circuit is short to ground for 120 milliseconds.
B0016 04
The roof rail module - left high and/or low circuit is open for 120 milliseconds.
B0016 0D
The roof rail module - left deployment loop resistance is more than 3.9 ohms for 120 milliseconds.
B0016 0E
The roof rail module - left deployment loop resistance is less than 1.1 ohms for 120 milliseconds.
Action Taken When the DTC Sets
| • | The SDM requests the instrument panel cluster (IPC) to illuminate the AIR BAG indicator. |
| • | The SDM will store a DTC, however 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. |
Reference Information
Schematic Reference
Connector End View Reference
Description and Operation
SIR System Description and Operation
Electrical Information Reference
Scan Tool Reference
Control Module References for scan tool information
Special Tools
| • | J 38715-A Driver and Passenger SIR Load Tool |
| • | J-38715-30A SIR Load Tool Adapter |
Circuit/System Testing
Important: Refer to SIR Service Precautions .
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 end sensor 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.
- Verify that the LF inflatable restraint side impact module connector and CPA are engaged.
- Ignition OFF, disconnect the harness connector at the left roof rail inflatable restraint module.
- With the appropriate load tool adapter, connect J 38715-A in place of the left roof rail inflatable restraint module.
- Ignition ON, with a scan tool, verify that DTC B0016 is set as current.
- Ignition OFF, disconnect the load tool and the adapter.
- Disconnect the harness connector at the SDM.
- Ignition ON, test for less than 1.0 volt between the low control circuit terminal 8 and ground.
- Ignition ON, test for less than 1.0 volt between the high control circuit terminal 9 and ground.
- Ignition OFF, test for infinite resistance between the low control circuit terminal 8 and ground.
- Ignition OFF, test for infinite resistance between the high control circuit terminal 9 and ground.
- Test for less than 1.0 ohm between the low control circuit terminal A and the SDM terminal 8.
- Test for less than 1.0 ohm between the high control circuit terminal B and the SDM terminal 9.
- If all circuits test normal, replace the SDM.
| ⇒ | If the above condition is not found, make the appropriate repair. |
| ⇒ | If the 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 left roof rail inflatable restraint module, and cycle the ignition ON. If the DTC resets after reconnecting the module, replace the left roof rail inflatable restraint module. |
| ⇒ | If not within the specified range, test the control circuit for a short to voltage. |
| ⇒ | If not within the specified range, test the control circuit for a short to voltage. |
| ⇒ | If not within the specified range, test the control circuit for a short to ground. |
| ⇒ | If not within the specified range, test the control circuit for a short to ground. |
| ⇒ | If not within the specified range, test the control circuit for an open/high resistance. |
| ⇒ | If not within the specified range, test the control circuit for an open/high resistance. |
Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
| • | Control Module References for SDM replacement, setup, and programming |
