Supplemental Inflatable Restraints

DTC B101E

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 B101E 31
- ECU Flash Checksum Error

DTC B101E 32
- ECU Stack Overflow

DTC B101E 43
- ECU EEPROM Program Error

DTC B101E 4A
- ECU Base Cal Checksum Error

Circuit/System Description

When the ignition is turned ON, the passenger presence system (PPS) performs a self test to verify if any critical malfunction exists within the system. During the power-up mode the PPS checks for a valid calibration data set. If no valid calibration set is found the PPS disables the system.

Conditions for Running the DTC

System voltage is between 9-16 volts.

Conditions for Setting the DTC

The calibration data set in not programmed in the PPS.

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.
* The history DTC clears after 250 fault-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)
* Connector Repairs (Connector Repairs)
* Wiring Repairs (Wiring Repairs)

Scan Tool Reference

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

Circuit/System Verification

Ignition ON, verify that DTC B101E is not set.

If the DTC is set, program the PPS module. If the DTC resets, 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 ECM replacement, setup, and programming