Supplemental Inflatable Restraints

DTC B101D

Diagnostic Instructions

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

DTC Descriptors
DTC B101D 3A
- Incorrect ECU Installed

DTC B101D 00
- ECU Internal Failure

DTC B101D 1A
- ECU Reference Cap Failure

DTC B101D 36
- ECU EPROM Failure

DTC B101D 32
- ECU Stack Overflow

DTC B101D 13
- ECU Temperature Sensor High

DTC B101D 14
- ECU Temperature Sensor Low

DTC B101D 04
- ECU Temperature Sensor Open

Circuit/System Description

When the ignition is turned ON, the passenger presence system (PPS) module performs tests to diagnose critical malfunctions within itself. When the PPS module has completed the power-up mode, the module will establish communication with other related modules. The module will set DTC B101D, and communicate with other related modules that an internal fault DTC has been set.

Conditions for Running the DTC

The ignition voltage is between 9-16 volts.

Conditions for Setting the DTC

The PPS module has detected an internal electrical malfunction.

Action Taken When the DTC Sets

PPS functions are disabled.

Conditions for Clearing the DTC

* The condition for setting the DTC is no longer present.
* A history DTC clears after 250 malfunction-free ignition cycles.

Reference Information
Schematic Reference

SIR Schematics ([1][2]Air Bag Systems)
Connector End View Reference

Component Connector End Views (Connector Views)
Description and Operation

SIR System Description and Operation (Description and Operation)
Electrical Information Reference

* Circuit Testing (Circuit Testing)
* Testing for Intermittent Conditions and Poor Connections (Testing for Intermittent Conditions and Poor Connections)
* Connector Repairs (Connector Repairs)
* Wiring Repairs (Wiring Repairs)

Scan Tool Reference

Control Module References (Programming and Relearning) for scan tool information

Circuit/System Verification

Verify that DTC B101D is not set.

If the DTC is set, replace the PPS module.

Repair Instructions

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

Control Module References (Programming and Relearning) for PPS replacement, setup, and programming