B0016

DTC B0016

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. Initial Inspection and Diagnostic Overview
* Review Strategy Based Diagnosis for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions provides an overview of each diagnostic category.

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/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 left roof rail module high and/or low circuit is short to voltage for 120 milliseconds.

B0016 02

The left roof rail module high and/or low circuit is short to ground for 120 milliseconds.

B0016 04

The left roof rail module high and/or low circuit is open for 120 milliseconds.

B0016 0D

The left roof rail module deployment loop resistance is greater than 3.9 ohms for 120 milliseconds.

B0016 0E

The left roof rail module deployment loop resistance is less than 1.1 ohms for 120 milliseconds.

Action Taken When the DTC Sets

* The SDM commands the AIR BAG indicator ON.
* The SDM will store a DTC, however if an event occurs system will still attempt deployments.

Conditions for Clearing the DTC

* The DTC will be current for as long as the fault is present.
* When the fault is no longer present, the DTC will be a history DTC.
* A history DTC will clear after 50 ignition cycles.

Special Tools

J 38715-A Driver and Passenger SIR Load Tool

Circuit/System Testing

Important: Refer to SIR Service Precautions.

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 front end sensor.

* The SDM module

* The front end sensor wiring harness connector.

* The SDM wiring harness connector.

1. Ignition OFF, disconnect the harness connector at the left roof rail inflatable restraint module.
2. With the appropriate load tool adapter, connect J 38715-A in place of the left roof rail inflatable restraint module.
3. Ignition ON, with a scan tool, verify the appropriate DTC is set as current.

• If DTC is not set or is set as history, replace the left roof rail inflatable restraint module.

4. Ignition OFF, disconnect J 38715-A and the appropriate load tool adapter.
5. Disconnect the harness connector at the SDM.
6. Ignition ON, test for less than 1 volt between the left roof rail inflatable restraint module low control circuit terminal A and ground.

• If not within the specified range, test the circuit for a short to voltage.

7. Ignition OFF, test for infinite resistance between the left roof rail inflatable restraint module high control circuit terminal B and ground.

• If not within the specified range, test the circuit for a short to ground.

8. Test for less then 1 ohm between the left roof rail inflatable restraint module high control circuit terminal B and the SDM terminal 9.

• If not within the specified range, test the circuit for an open/high resistance.

9. Test for less then 1 ohm between the left roof rail inflatable restraint module low control circuit terminal A and the SDM terminal 8.

• If not within the specified range, test the circuit for an open/high resistance.

10. If all circuits test normal, replace the SDM.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure. Verification Tests

* Inflatable Restraint Roof Side Rail Module Replacement
* SIR/SRS Wiring Repairs