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Home >> Hummer >> 2007 >> H2 V8-6.0L >> Repair and Diagnosis >> A L L Diagnostic Trouble Codes ( DTC ) >> Testing and Inspection >> B Code Charts >> B0016

B0016



DTC B0016, B0017, or B0018

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. Diagnostic System Check - Vehicle
* 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/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 diagnostic trouble code (DTC) will be stored in memory.

Conditions for Running the DTC

Ignition voltage is between 9-16 volts.

Conditions for Setting the DTC

* DTC B0016 will set when the I/P module deployment loop resistance is less than 1.3 ohms for 500 milliseconds.
* DTC B0017 will set when one of the following conditions occurs:

- 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.
- I/P module deployment loop resistance is more than 4.8 ohms for 500 milliseconds.

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

- I/P module high and/or low circuits is short to ground or short to voltage for 500 milliseconds.
- 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

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 I/P 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.

• 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 SIR Driver/Passenger Load Tool 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.

• 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 sensing and diagnostic module (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.

• 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.

• 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
* For SDM replacement, setup, and programming. Refer to Programing and Relearning Programming and Relearning
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