AutoCodes – Toyota – B1788 2017 Toyota RAV4

B1788 2017 Toyota RAV4 Code - Rear Occupant Classification Sensor Right Collision Detection

Quick Answer

The Diagnostic Trouble Code (DTC) B1788 is output when the Occupant Detection ECU receives a collision detection signal sent by the Rear Occupant Classification Sensor Right (RH) when an accident occurs. Common causes include Faulty Separate Type Rear Seat Cushion Spring Assembly Right (Rear Occupant Classification Sensor Right), Separate Type Rear Seat Cushion Spring Assembly Right harness is open or shorted, Separate Type Rear Seat Cushion Spring Assembly Right circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: B1788 2017 Toyota RAV4 indicates Rear Occupant Classification Sensor Right Collision Detection.
Common causes: Common causes include Faulty Separate Type Rear Seat Cushion Spring Assembly Right (Rear Occupant Classification Sensor Right), Separate Type Rear Seat Cushion Spring Assembly Right harness is open or shorted, Separate Type Rear Seat Cushion Spring Assembly Right circuit poor electrical connection.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 235

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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Table of contents Created and updated by William Orellana on Oct 16, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B1788 2017 Toyota RAV4 Description

The Diagnostic Trouble Code (DTC) B1788 is output when the Occupant Detection ECU receives a collision detection signal sent by the Rear Occupant Classification Sensor Right (RH) when an accident occurs. DTC B1788 is also stored when the separate type of front seat cushion spring assembly is subjected to a strong impact, even if an actual accident has not occurred. However, when the Occupant Detection ECU outputs a collision detection signal, even if the vehicle is not in a collision, DTC B1788 can be cleared by performing the zero point calibration and sensitivity check. Therefore, when DTC B1788 is output, first perform the zero point calibration and sensitivity check.

OBDII Code B1788 2017 Toyota RAV4 - Rear Occupant Classification Sensor Right Collision Detection - AutoCodes.com — B1788 2017 Toyota RAV4 Code - Rear Occupant Classification Sensor Right Collision Detection

What does this mean?

What are the Possible Causes of the DTC B1788 2017 Toyota RAV4?

Faulty Separate Type Rear Seat Cushion Spring Assembly Right (Rear Occupant Classification Sensor Right)
Separate Type Rear Seat Cushion Spring Assembly Right harness is open or shorted
Separate Type Rear Seat Cushion Spring Assembly Right circuit poor electrical connection
Faulty Occupant Detection ECU

How to Fix the DTC B1788 2017 Toyota RAV4?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B1788 2017 Toyota RAV4 code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the B1788 2017 Toyota RAV4 code?

Need more information on how to fix the B1788 2017 Toyota RAV4 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1788 2017 Toyota RAV4 code diagnosed by a professional: Find a repair shop in your area

Precautions for SRS “AIR BAG” and “SEAT BELT PRE-TENSIONER” Service

Never probe the electrical connectors on air bag, side air curtain modules or seat belts.
Never disassemble or tamper with safety belt buckle/retractor pretensioners, adaptive load limiting retractors, safety belt inflators, or probe the electrical connectors.
Do not use electrical test equipment to check SRS circuits unless instructed to in this Service Manual.
Before servicing the SRS, turn ignition switch OFF, disconnect both battery cables and wait at least 3 minutes. For approximately 3 minutes after the cables are removed, it is still possible for the air bag and seat belt pre-tensioner to deploy. Therefore, do not work on any SRS connectors or wires until at least 3 minutes have passed.

Failure to follow this instruction may result in the accidental deployment of these modules, which increases the risk of serious personal injury or death.

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about B1788 2017 Toyota RAV4 Code

1. What does OBDII code B1788 in a 2017 Toyota RAV4 indicate?

The code B1788 relates to the Rear Occupant Classification Sensor Right Collision Detection system in the vehicle.

2. What are the common symptoms of a B1788 OBDII code in a 2017 Toyota RAV4?

Common symptoms include the airbag warning light illuminating on the dashboard and potential issues with the rear occupant classification sensor.

3. What are the possible causes of the B1788 OBDII code in a 2017 Toyota RAV4?

Possible causes include a malfunctioning rear occupant classification sensor, wiring issues, or a problem with the airbag control module.

4. How can I diagnose the cause of the B1788 OBDII code in my 2017 Toyota RAV4?

Diagnosing the issue may require using a diagnostic scanner to read the fault codes, inspecting the wiring connected to the rear occupant classification sensor, and testing the sensor itself for proper functionality.

5. Can I continue driving my 2017 Toyota RAV4 with the B1788 OBDII code present?

It is not recommended to drive the vehicle with an active airbag-related fault code, as it may affect the proper deployment of the airbags in case of an accident.

6. How can I reset the B1788 OBDII code in my 2017 Toyota RAV4?

Resetting the code typically involves using a diagnostic scanner to clear the fault code after the underlying issue has been identified and resolved.

7. Is it safe to repair the B1788 OBDII code in my 2017 Toyota RAV4 myself?

While some minor repairs like checking wiring connections can be done by DIY enthusiasts, diagnosing and repairing complex airbag system issues should be left to trained professionals to ensure safety.

8. How much does it cost to fix the B1788 OBDII code in a 2017 Toyota RAV4?

The cost of fixing the B1788 code can vary depending on the exact cause of the issue, but it may involve expenses for parts replacement, labor costs, and diagnostic fees.

9. Are there any recalls related to the B1788 OBDII code in the 2017 Toyota RAV4?

It is advisable to check with your local Toyota dealership or the National Highway Traffic Safety Administration (NHTSA) website to see if there are any recalls or service campaigns related to this specific OBDII code.

10. How often should I have the rear occupant classification sensor system in my 2017 Toyota RAV4 inspected?

Regular inspections and maintenance checks as per the manufacturer's recommended schedule can help prevent issues with the rear occupant classification sensor system and ensure the safety features function correctly.