Diagnostic Instructions

DTC Descriptors

DTC B0016 01: Left Roof Rail Deployment Loop Short to Battery

DTC 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
Roof Rail Module - Left High Circuit	B0016 02	B0016 0D	B0016 04	B0016 01	B0016 0E
Roof Rail Module - Left Low Circuit	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 which 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

Conditions for Clearing the DTC

Reference Information

Schematic Reference

SIR Schematics

Connector End View Reference

SIR Connector End Views

Electrical Information Reference

Special Tools Required

J 38715-A SIR Driver/Passenger Load Tool

Circuit/System Testing

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 roof rail module - left

•	The SDM module

•	The roof rail module - left wiring harness connector

•	The SDM wiring harness connector

1. Ignition OFF, disconnect the roof rail module - left connector.
2. Connect the J 38715-A to the harness side of the roof rail module - left connector. Use the PASSENGER INFLATOR connector located on the load tool.
3. Ignition ON, use a scan tool to observe the SIR DTC display. Verify DTC B0016 is set in current.

⇒	If DTC B0016 is history replace the roof rail module - left.

4. Ignition OFF, disconnect and remove the J 38715-A .
5. Disconnect the SDM harness connector.
6. Test the high and low circuits between the SDM and roof rail module - left for a short to voltage, short to ground, or open/low resistance. Verify that a short to voltage, short to ground, or open/low resistance does not exist.

⇒	If damage or corrosion is found make the appropriate repair.

7. If all circuits test normal then replace the SDM.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.