Hummer H3. Manual — part 585

SIR/SRS Wiring Repairs

Control Module References for PPS replacement, setup and programming

DTC B0098

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 Descriptor

DTC B0098

Passenger Presence System Configuration Error

Circuit/System Description

When the ignition is turned ON, the inflatable restraint sensing and diagnostic module (SDM)
performs tests to diagnose critical malfunctions within itself. When the SDM has completed the
power-up mode, the SDM will establish communication with the passenger presence system
(PPS). The PPS will respond by commanding both the PASSENGER AIR BAG ON/OFF
indicators ON for 5 seconds. The SDM will transmit a request message to the PPS to receive the
PPS verification ID. The PPS will transmit the verification ID to the SDM and the SDM will
compare the ID received to data stored in memory. If the data stored in memory does not match
the information transmitted by the PPS, the SDM will set DTC B0098 and command the AIR
BAG indicator ON. The PPS will set DTC 064 and request the SDM to disable the instrument
panel (I/P) module deployment loop.

Conditions for Running the DTC

Ignition 1 voltage is within the normal operating voltage range.

Conditions for Setting the DTC

The PPS has a current fault.

The PPS fault counter in the SDM has reached 127 counts.

Action Taken When the DTC Sets

The SDM disables the I/P module deployment loop.

2007 Hummer H3

2007 RESTRAINTS Supplemental Inflatable Restraints - H3

The SDM commands the AIR BAG indicator ON via class 2 serial data.

Conditions for Clearing the DTC

The condition responsible for setting the DTC no longer exists.

The scan tool CLEAR DTC command has been issued.

A history DTC will clear once 255 malfunction-free ignition cycles have occurred.

Diagnostic Aids

DTC B0098 is an indication that the SDM has received an incorrect PPS verification ID. The
SDM will continue to request the verification ID from the PPS for 5 seconds. If the SDM does
not receive the correct verification ID from the PPS within 5 seconds, the SDM will set DTC
B0098 as current, illuminate the AIR BAG indicator and disable the I/P module deployment
loop. If either the SDM or PPS were replaced, make sure the correct part numbers were used for
the vehicle application.

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

IMPORTANT: DTC B0098 will also set if the PPS has a current malfunction and

has set DTC 064. The SDM will set DTC B0098 as current and
command the AIR BAG indictor ON. This is done to notify the
driver of any PPS malfunctions. When DTC B0098 is present it is
important to check the PPS for any current DTCs. Refer to
Passenger Presence System Flash Code Procedures. If the PPS
has any current DTCs, address these before performing this DTC
chart.

2007 Hummer H3

2007 RESTRAINTS Supplemental Inflatable Restraints - H3

Wiring Repairs

Circuit/System Testing

1. Verify that the vehicle has the correct PPS and SDM installed.

If an incorrect PPS or SDM has been installed, replace the incorrect component and
perform the programming procedure for that component.

2. If the correct components are installed and DTC B0098 is set as a current DTC, replace the

PPS.

Replace the PPS and rezero the system.

3. If after replacement of the PPS, DTC B0098 is set as current, replace the SDM.

Replace the SDM and perform the SDM Setup procedure.

Repair Procedures

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

SIR/SRS Wiring Repairs

Control Module References for PPS and SDM replacement, setup and programming

DTC B0100, B0101, B0102, B0103, B0104 OR B0105

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 B0100

Electronic Front End Sensor 1 Performance

DTC B0101

Discard Electronic Front End Sensor 1

DTC B0102

2007 Hummer H3

2007 RESTRAINTS Supplemental Inflatable Restraints - H3

Incorrect Electronic Front End Sensor 1 Installed

DTC B0103

Electronic Front End Sensor 2 Performance

DTC B0104

Discard Electronic Front End Sensor 2

DTC B0105

Incorrect Electronic Front End Sensor 2 Installed

Diagnostic Fault Information

DTC B0100, B0101, B0102, B0103, B0104 or B0105

Circuit/System Description

The inflatable restraint electronic frontal sensor (EFS) utilizes a unidirectional 2-wire circuit.
The EFS modulates current on the interface to send ID, state of health (SOH) and deployment
commands to the inflatable restraint sensing and diagnostic module (SDM). The SDM serves as a
power source and a ground for the EFS. When the ignition is turned ON and input power from
the SDM is first detected, the EFS will respond by performing internal diagnostics and sending
an ID to the SDM. The SDM considers the ID to be valid if the response time is less than 5
seconds. The EFS continually communicates status messages to the SDM, which determines if a
fault is present in the EFS circuit. When a fault is detected, the SDM resets the EFS twice by
removing and reapplying power. If the fault is still present, the SDM will set a diagnostic trouble
code (DTC).

Conditions for Running the DTC

Ignition voltage is between 9-16 volts.

Conditions for Setting the DTC

Circuit

Short to

Ground

High

Resistance

Open

Short to

Voltage

Signal

Performance

Front Impact Sensor Signal
Circuit Left/Right

B0100,

B0103

B0100,

B0103

B0100,

B0103

B0100,

B0103

B0100,

B0103

Front End Sensor Low
Reference Circuit Left/Right

-

B0100,

B0103

B0100,

B0103

-

B0100,

B0103

2007 Hummer H3

2007 RESTRAINTS Supplemental Inflatable Restraints - H3