Post-collision diagnostic scan and calibration requirements for Honda and Acura

Editor’s note: American Honda released a position statement regarding post-collision repair requirements for the manufacturer. Below is an overview. For the position statement in its entirety, visit or

It is the position of American Honda that all vehicles involved in a collision must have the following minimum diagnostic scans, inspections, and/or calibrations done to avoid improper repair:

 •   A preliminary diagnostic scan during the repair estimation phase to determine what DTCs may be present, so proper repairs may be included.

 •   A post repair diagnostic scan to confirm that no DTCs remain.

–  Any repair that requires disconnection of electrical components in order to perform the repair will require a post-repair diagnostic scan to confirm if the component is reconnected properly and functioning.

–  Damage that requires body parts replacement will always require a post-repair diagnostic scan.

 •   Some safety and driver assistive systems will require inspections, calibration, and/or aiming after collision or other body repairs.


Diagnostic recommendations

The recommended way to accurately determine the post-collision status of all Honda and Acura vehicle electronic control systems is with the i-HDS.

 •   The i-HDS has an “All DTC Check” feature that will scan available electronic control systems for DTCs in one operation.

 •   American Honda does not test other scan tools and cannot comment on their capabilities or accuracy.


Inspection/calibration/aiming requirements

Safety and driver assistive systems that will require inspections, calibration, and/or aiming after collision or other body repairs include, but are not limited to the following.

After reconnecting the 12-volt battery

After collision repairs are complete and the battery is reconnected, some electrical systems may not operate properly. Those may include, but are not limited to the following:

 •   Navigation systems

 •   Engine idle speed learn

 •   Power window, power tailgate, moonroof, power sliding door position and/or pinch detection

 •   Keyless access and immobilizer/security systems


Front passenger’s seat weight sensor - Inspections and calibration

Those sensors control passenger’s front airbag operation and the PASSENGER AIRBAG OFF indicator based on the occupant’s weight. Like any scale, weight sensors are a precision device.

 •   The service information may refer to these sensors as the seat weight sensor (SWS) system or occupant detection system (ODS) depending on model and year.

 •   This inspection requires a scan tool to fully check the seat weight sensor's operation using the following criteria:

–  Empty front passenger seat weight to confirm the sensors can detect this condition

–  Seat weight with a known calibration weight amount if necessary

 •   This check must be done after any collision, regardless of damage even if no airbags deployed.

 •   The check confirms sensor operation and that no binding or damage exists in the relationship between the seat frame, weight sensors, and floor pan.

 •   Weight sensor calibration is also required when front passenger seat components have been removed or replaced. Refer to the service information for procedures.


Driver assistive system aiming

Some models use one or more of the following camera and/or radar based driver support systems that require software-based aiming and/or calibration to ensure proper operation after certain components have been removed and/or replaced:

 •   Adaptive Cruise Control (ACC)

 •   Collision Mitigation Braking System (CMBS)

 •   Forward Collision Warning (FCW)

 •   Lane Departure Warning (LDW)

 •   Lane Keeping Assist System (LKAS)

 •   Road Departure Mitigation (RDM)

 •   Blind Spot Information (BSI)

 •   LaneWatch (Honda Only)

 •   Multi-View Camera System (MVCS - Acura Only)


i-HDS software, as well as other service information, is available to independent repair facilities and others for use on laptop or desktop computer hardware.

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