B0099

DTC B0099

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 Descriptor

B0099 00

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Deployment Commanded Circuit

Circuit/System Description

The pedestrian impact detection system senses and discriminates vehicle impacts and deploys the pedestrian hood hinge actuators in a timely manner to protect vulnerable pedestrians. The discrimination sensor provides discrete force information to the pedestrian impact detection module. The pedestrian impact detection module uses vehicle acceleration information from the safing sensor and force information from the discrimination sensor to determine those events when the deployment of the hood hinge actuator is expected. The pedestrian hood actuators deploy only when a valid signal whose energy is capable of triggering deployment of the hood is present. During a frontal pedestrian impact of sufficient force, the pedestrian impact detection module will allow current to flow through the deployment loop in order to deploy the hood hinge actuator. The pedestrian impact detection module provides a minimum of 1.2 amps and a maximum of 1.95 amps of current for a minimum of 2 ms when an actuator deployment is commanded. The pedestrian impact detection module performs continuous diagnostic tests on the deployment loops to check for proper circuit continuity. The pedestrian impact detection module sets this DTC in the current ignition cycle when a hood hinge actuator deployment has been commanded. After a deployment, the hood hinge actuators and the pedestrian impact detection module need to be replaced.

Conditions for Running the DTC

Ignition voltage is between 9-16 volts.

Conditions for Setting the DTC

* The pedestrian impact detection module detects a frontal impact to warrant deployment of the hood hinge actuators.

* The pedestrian impact detection module provides a minimum of 1.2 amps and a maximum of 1.95 amps of current for a minimum of 2 ms to command deployment of the hood hinge actuators

Action Taken When the DTC Sets

* The pedestrian impact detection module commands the DIC to display Reset Hood See Owners Manual for the following two ignition cycles.

* The pedestrian impact detection module commands the DIC to display Service Pedestrian Protection System at the third ignition cycle after the hood hinge actuators have been deployed until service is performed.

Conditions for Clearing the DTC

* The condition responsible for setting the DTC no longer exists.

* A history DTC will clear once 40 malfunction-free ignition cycles have occurred.

Reference Information

Schematic Reference

Object Detection Schematics [1][2]Collision Avoidance and Parking Assist Systems

Connector End View Reference

Component Connector End Views A/C Compressor Clutch

Description and Operation

Object Detection Description and Operation (UFT) Object Detection (UFT)Object Detection Description and Operation (UVC) Object Detection (UVC)Object Detection Description and Operation (UD7) Object Detection (UD7)Object Detection Description and Operation (B3T) Object Detection (B3T)

Electrical Information Reference

* Circuit Testing Circuit Testing

* Connector Repairs Connector Repairs

* Testing for Intermittent Conditions and Poor Connections Testing for Intermittent Conditions and Poor Connections

* Wiring Repairs Wiring Repairs

Scan Tool Reference

Control Module References Control Module References for scan tool information

Circuit/System Testing

Ignition ON, verify DTC B0099 is not set.

If DTC is set, replace the pedestrian impact detection module and the active hood hinge actuators.

Repair Instructions

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

* Active Hood Hinge Actuator Replacement Service and Repair

* Control Module References Control Module References for pedestrian impact detection module replacement, setup, and programming