Mitsubishi B1418
52B-004 Page 15 of 22 TSB-18-52B-004 Please make the indicated changes to the 2016 and 2017 i-MiEV Service Manual, Group 52B - Supplemental Restraint System (SRS) -> SRS Air Bag Di
Quick answer
DTC B1418 is documented in Mitsubishi i-MiEV SRS air-bag diagnostic material. Verified NHTSA-posted Mitsubishi service bulletins correct the service-manual diagnostic information for B1418; the supplied evidence does not establish the exact fault definition or vehicle condition indicated by the code.
This page separates verified manufacturer/regulator evidence from supporting material. Unsupported causes, repairs or safety conclusions are not guessed.
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1. What does B1418 mean?
DTC B1418 is documented in Mitsubishi i-MiEV SRS air-bag diagnostic material. Verified NHTSA-posted Mitsubishi service bulletins correct the service-manual diagnostic information for B1418; the supplied evidence does not establish the exact fault definition or vehicle condition indicated by the code.
2. Technical explanation
NHTSA-posted Mitsubishi bulletins TSB-18-52B-002, TSB-18-52B-003, and TSB-18-52B-004 instruct service-manual corrections in Group 52B, Supplemental Restraint System (SRS), under SRS Air Bag Diagnosis and SRS-ECU diagnostic-trouble-code procedures. Each cited bulletin includes corrected diagnostic information for DTC B1418 and B1419. The supplied evidence does not include the corrected B1418 diagnosis text itself, so a specific component, circuit, failure mode, or repair cannot be stated.
3. What system is affected?
Supplemental Restraint System (SRS), including SRS air-bag diagnosis and SRS-ECU DTC procedures.
4. How serious is this code?
Not yet established by verified evidence.
5. Symptoms you may notice
- Not yet established by verified evidence.
6. Possible causes
- Not yet established by verified evidence.
7. Can I still drive the vehicle?
Not yet established by verified evidence.
8. Can I charge the vehicle?
Not yet established by verified evidence.
9. What you can safely do
- Arrange diagnosis using the applicable corrected Mitsubishi SRS service-manual procedure.
- Do not attempt air-bag or SRS repair based on this code alone; the supplied evidence does not provide a safe repair procedure.
10. Step-by-step troubleshooting
- Confirm the vehicle model year and market applicability before using a bulletin.
- Use the applicable Mitsubishi bulletin to obtain the corrected Group 52B SRS-ECU diagnostic procedure for B1418.
- Not yet established by verified evidence: the individual diagnostic tests, measurements, component inspections, and decision criteria for B1418.
11. When to contact service
Contact a Mitsubishi-qualified service facility for diagnosis using the applicable corrected SRS service information.
12. What the service center may check
- Verify B1418 using the SRS-ECU diagnostic procedure.
- Apply the corrected B1418 diagnosis information specified by the applicable TSB: TSB-18-52B-002 for 2012 i-MiEV, TSB-18-52B-003 for 2013–2014 i-MiEV material cited in the source, or TSB-18-52B-004 for 2016–2017 i-MiEV.
- Not yet established by verified evidence: specific test results or inspection items required by the corrected procedure.
13. Possible repair or resolution
- Not yet established by verified evidence.
14. Affected vehicles
- Mitsubishi i-MiEV · 2012 · US
- Mitsubishi i-MiEV · 2013–2014 · US
- Mitsubishi i-MiEV · 2016–2017 · US
15. Related TSBs / service bulletins
- TSB-18-52B-002, published December 20, 2018 and posted by NHTSA as manufacturer communication 10152960: corrects 2012 i-MiEV Group 52B SRS-ECU diagnostic information for DTC B1418 and B1419.
- TSB-18-52B-003, published December 20, 2018 and posted by NHTSA as manufacturer communication 10152959: corrects cited 2013 and 2014 i-MiEV Group 52B SRS-ECU diagnostic information for DTC B1418 and B1419.
- TSB-18-52B-004, published December 20, 2018 and posted by NHTSA as manufacturer communication 10152961: corrects 2016 and 2017 i-MiEV Group 52B SRS-ECU diagnostic information for DTC B1418 and B1419.
16. Recall information
- Not yet established by verified evidence.
17. Official manufacturer information
Official NHTSA-hosted manufacturer communications: TSB-18-52B-002: https://static.nhtsa.gov/odi/tsbs/2018/MC-10152960-9999.pdf ; TSB-18-52B-003: https://static.nhtsa.gov/odi/tsbs/2018/MC-10152959-9999.pdf ; TSB-18-52B-004: https://static.nhtsa.gov/odi/tsbs/2018/MC-10152961-9999.pdf
19. Frequently asked questions
What system is associated with B1418?
Verified evidence places B1418 in Mitsubishi i-MiEV Group 52B Supplemental Restraint System (SRS) air-bag diagnosis, specifically SRS-ECU DTC procedures.
What does B1418 specifically mean?
Not yet established by verified evidence. The supplied sources establish that the diagnostic information was corrected, but do not provide the corrected fault description.
Which vehicles are covered by the supplied evidence?
The supplied applicability data lists US-market Mitsubishi i-MiEV model years 2012; 2013–2014; and 2016–2017. The TSB summaries specifically cite 2012, cited 2013–2014 material, and 2016–2017 service-manual corrections.
Is B1418 a recall?
Not yet established by verified evidence. The supplied records are official service bulletins, not recall records.