AutoCodes – Cadillac – B0070 Cadillac

B0070 Cadillac Code - Right Front/Passenger Roof Rail/Head Curtain Bag Deployment Loop Open

Quick Answer

The driver roof rail deployment loop consists of an inflatable restraint roof rail module - right and the roof rail module high and low circuits. Common causes include Faulty Right Front/Passenger Roof Rail/Head Curtain Bag, Right Front/Passenger Roof Rail/Head Curtain Bag harness is open or shorted, Right Front/Passenger Roof Rail/Head Curtain Bag 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: B0070 Cadillac indicates Right Front/Passenger Roof Rail/Head Curtain Bag Deployment Loop Open.
Common causes: Common causes include Faulty Right Front/Passenger Roof Rail/Head Curtain Bag, Right Front/Passenger Roof Rail/Head Curtain Bag harness is open or shorted, Right Front/Passenger Roof Rail/Head Curtain Bag 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 1,119

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 Jun 14, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B0070 Cadillac Description

The driver roof rail deployment loop consists of an inflatable restraint roof rail module - right and the roof rail module high and low circuits. A shorting bar used within the roof rail module connector shorts together both the roof rail module high and low circuits when the connector is disconnected. This will help to prevent unwanted deployment of the inflator module during servicing. During a side or frontal crash of sufficient force the inflatable restraint Sensing and Diagnostic Module (SDM) will allow current to flow through the deployment loop in order to deploy the roof rail module. The SDM performs continuous diagnostic tests on the deployment loops to check for proper circuit continuity and for shorts to ground or voltage. If a malfunction is detected, a Diagnostic Trouble Code (DTC) will be stored in memory.

OBDII Code B0070 Cadillac - Right Front/Passenger Roof Rail/Head Curtain Bag Deployment Loop Open - AutoCodes.com — B0070 Cadillac Code - Right Front/Passenger Roof Rail/Head Curtain Bag Deployment Loop Open

What does this mean?

What are the Possible Causes of the DTC B0070 Cadillac?

Faulty Right Front/Passenger Roof Rail/Head Curtain Bag
Right Front/Passenger Roof Rail/Head Curtain Bag harness is open or shorted
Right Front/Passenger Roof Rail/Head Curtain Bag circuit poor electrical connection
Faulty Sensing and Diagnostic Module (SDM)

How to Fix the DTC B0070 Cadillac?

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 B0070 Cadillac 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.

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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 B0070 Cadillac Code

1. What are the common symptoms of OBDII code B0070 in a Cadillac related to the right front passenger roof rail/head curtain bag deployment loop being open?

- The most common symptoms include the airbag warning light illuminating on the dashboard and a message indicating an issue with the right front passenger airbag system.

2. What could cause the right front passenger roof rail/head curtain bag deployment loop to be open in a Cadillac triggering OBDII code B0070?

- The code B0070 may be triggered by a faulty airbag deployment loop or a wiring issue in the right front passenger airbag system.

3. How can I diagnose the cause of OBDII code B0070 in my Cadillac related to the right front passenger roof rail/head curtain bag deployment loop being open?

- To diagnose the issue, a thorough inspection of the airbag system wiring and components in the right front passenger area is necessary. This should be done by a qualified technician with the appropriate diagnostic tools.

4. Are there any safety concerns associated with OBDII code B0070 in a Cadillac indicating an open right front passenger roof rail/head curtain bag deployment loop?

- Yes, it is crucial to address this issue promptly as it may affect the proper function of the airbag system in the event of a collision, potentially compromising passenger safety.

5. Can I continue driving my Cadillac with OBDII code B0070 indicating an open right front passenger roof rail/head curtain bag deployment loop?

- It is not recommended to drive the vehicle with this code present, as the airbag system may not deploy correctly in case of an accident. It is advised to have the issue diagnosed and repaired as soon as possible.

6. What repair options are available to fix OBDII code B0070 related to the right front passenger roof rail/head curtain bag deployment loop in a Cadillac?

- Repair options may include replacing the faulty deployment loop, repairing damaged wiring, or addressing any other issues identified during the diagnostic process.

7. How much does it typically cost to repair OBDII code B0070 indicating an open right front passenger roof rail/head curtain bag deployment loop in a Cadillac?

- The cost of repairs can vary depending on the exact cause of the issue and the labor rates in your area. It is recommended to obtain a quote from a trusted mechanic or dealership.

8. Can OBDII code B0070 be reset after repairing the issue with the right front passenger roof rail/head curtain bag deployment loop in a Cadillac?

- Once the underlying problem is fixed, the code can be cleared using a diagnostic scanner to reset the airbag system and turn off the warning light on the dashboard.

9. Are there any recalls or technical service bulletins related to OBDII code B0070 in Cadillac vehicles?

- It is recommended to check with your local Cadillac dealership or visit the manufacturer's website to see if there are any recalls or technical service bulletins addressing this specific OBDII code.

10. How often should I have the airbag system in my Cadillac inspected to prevent issues like OBDII code B0070 from occurring?

- Regular maintenance and inspections of the airbag system as part of your vehicle's scheduled service intervals can help identify and address potential issues before they trigger OBDII codes like B0070.