GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 HUMMER 🢒 2007 🢒 H2 🢒 Driver Information and Entertainment 🢒 Cellular, Entertainment, and Navigation 🢒 DTC B0016, B0017, or B0018

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 provides an overview of each diagnostic category.

DTC Descriptors

DTC B0016 : Passenger Frontal Deployment Loop Resistance Low

DTC B0017 : Passenger Frontal Deployment Loop Open

DTC B0018 : Passenger Frontal Deployment Loop Voltage Out of Range

Diagnostic Fault Information

Circuit

Short to Ground

High Resistance

Open

Short to Voltage

Signal Performance

I/P Module High Circuit

B0018

B0018

B0017

B0018

B0016

I/P Module Low Circuit

B0018

B0018

B0017

B0018

B0016

Circuit/System Description

The passenger deployment loop consists of a inflatable restraint instrument panel (I/P) module, the I/P module high and I/P module low circuits. There is a shorting bar used within the I/P module connector which will short together both I/P module high and low circuits when the connector is disconnected. This will help to prevent unwanted deployment of the inflator module during servicing. During a 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 I/P module. The SDM performs continuous diagnostic tests on the deployment loops to check for proper circuit continuity and for shorts to ground or voltage. If a malfunction is detected, a DTC will be stored in memory.

Conditions for Running the DTC

Ignition voltage is between 9-16 volts.

Conditions for Setting the DTC

B0016

DTC B0016 will set when the I/P module deployment loop resistance is less than 1.3 ohms for 500 milliseconds.

B0017

DTC B0017 will set when one of the following conditions occurs:

    • The I/P module high circuit is less than 2.4 volts and the I/P module deployment loop is more than 6 ohms for 500 milliseconds.
    • The I/P module deployment loop resistance is more than 4.8 ohms for 500 milliseconds.

B0018

DTC B0018 will set when one of the following conditions occur:

    • The I/P module high and/or low circuits is short to ground or short to voltage for 500 milliseconds.
    • The I/P module high circuit is less than 2.4 volts and I/P module deployment loop resistance is less than 6 ohms for 500 milliseconds.

Action Taken When the DTC Sets
    • The SDM commands the AIR BAG indicator ON via class 2 serial data.
    • The SIR system is disabled and no deployments are allowed.

Conditions for Clearing the DTC
    • The condition responsible for setting the DTC no longer exists and the scan tool Clear DTC function is used.
    • A history DTC will clear once 255 malfunction-free ignition cycles have occurred.

Diagnostic Aids

The following are possible causes of the malfunction:

    • A short between the I/P module high and low circuits
    • An open or a high resistance in the I/P module high or low circuits
    • A short to ground or a short to voltage in the I/P module high or low circuits
    • The I/P module connector
    • The SDM connector
    • A malfunctioning I/P module
    • A malfunctioning SDM

Reference Information

Schematic Reference

SIR Schematics

Connector End View Reference

SIR Connector End Views

Electrical Information Reference

    •  Circuit Testing
    •  Connector Repairs
    •  Testing for Intermittent Conditions and Poor Connections
    •  Wiring Repairs

Special Tools Required

    • J 38715-A SIR Driver/Passenger Load Tool
    • J 38715-100 Load Tool Adapter

Circuit/System Testing
  1. With the ignition OFF, disconnect I/P module in-line connector. Refer to Inflatable Restraint Instrument Panel Module Replacement for location of connector.
  2. Inspect the component and wiring harness sides of the in-line connector for the I/P module for damage or corrosion.
    3. ⇒If the in-line connector for the I/P module is damaged, the I/P module must be replaced.
    ⇒If the I/P module wiring harness side connector is damaged, replace the harness side of the connector.
  3. Use J 38715-100 adapter to connect the J 38715-A to the harness side of the I/P module in-line wiring harness connector. Use the PASSENGER INFLATOR connector located on the load tool.
  4. With the ignition ON, use a scan tool to observe the SIR DTC display. Verify DTC B0016, B0017, or B0018 are set in history.
    5. ⇒If DTC B0016, B0017, or B0018 is history replace the I/P module.
  5. With the ignition OFF, disconnect and remove the J 38715-A and adapter.
  6. Remove the inflatable restraint SDM connector. Inspect the SDM connector for damage or corrosion that may cause a malfunction in the I/P module high and/or low circuits.
    7. ⇒If damage or corrosion is found make the appropriate repair.
  7. Test the high and low circuits between the SDM and I/P module for a short to voltage, short to ground, or open/low resistance.
    8. ⇒If circuits test good then replace the SDM.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

    •  Inflatable Restraint Instrument Panel Module Replacement
    •  SIR/SRS Wiring Repairs
    •  Control Module References for SDM replacement, setup, and programming