Mitsubishi B1409
52B-004 Page 10 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
B1409 is referenced in Mitsubishi service-manual correction bulletins for the i-MiEV Supplemental Restraint System (SRS). The supplied evidence does not establish the exact fault definition, symptoms, drivability, charging impact, or repair.
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 B1409 mean?
B1409 is referenced in Mitsubishi service-manual correction bulletins for the i-MiEV Supplemental Restraint System (SRS). The supplied evidence does not establish the exact fault definition, symptoms, drivability, charging impact, or repair.
2. Technical explanation
NHTSA-hosted Mitsubishi manufacturer communications state that the SRS Air Bag Diagnosis / Diagnostic Trouble Code Procedures for DTCs B1408 and B1409 required correction in the i-MiEV service manuals. This is documentation-correction evidence, not a complete diagnostic definition for B1409.
3. What system is affected?
Supplemental Restraint System (SRS), specifically SRS Air Bag Diagnosis and the SRS-ECU diagnostic trouble-code 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 by a qualified Mitsubishi service provider or other appropriately trained automotive technician, because the verified material identifies B1409 within the SRS diagnostic procedures.
- Do not attempt air-bag or SRS component repair based on the supplied evidence.
10. Step-by-step troubleshooting
- Use the applicable corrected Mitsubishi i-MiEV SRS-ECU diagnostic procedure for DTC B1409. The supplied evidence confirms that such procedure information was corrected, but does not provide the corrected steps.
11. When to contact service
Contact a Mitsubishi dealer or qualified service provider for diagnosis using the corrected SRS Air Bag Diagnosis information applicable to the vehicle year and market.
12. What the service center may check
- Confirm the vehicle year and market applicability.
- Retrieve B1409 from the SRS-ECU.
- Consult the corrected SRS Air Bag Diagnosis / Diagnostic Trouble Code Procedures published in the applicable Mitsubishi bulletin.
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: corrects 2012 i-MiEV service-manual information for SRS diagnostic procedures, including B1408 and B1409.
- TSB-18-52B-003, published December 20, 2018: corrects 2013 (Canada only) and 2014 i-MiEV service-manual information for SRS diagnostic procedures, including B1408 and B1409.
- TSB-18-52B-004, published December 20, 2018: corrects 2016 and 2017 i-MiEV service-manual information for SRS diagnostic procedures, including B1408 and B1409.
16. Recall information
- Not yet established by verified evidence.
17. Official manufacturer information
Official NHTSA-hosted manufacturer communications: TSB-18-52B-002 (MC-10152960), TSB-18-52B-003 (MC-10152959), and TSB-18-52B-004 (MC-10152961).
19. Frequently asked questions
What system is B1409 associated with?
The supplied Mitsubishi bulletin evidence places B1409 in the i-MiEV Supplemental Restraint System (SRS) Air Bag Diagnosis procedures for the SRS-ECU.
Which i-MiEV vehicles are covered by the supplied evidence?
The evidence identifies 2012, 2013 (Canada only), 2014, 2016, and 2017 i-MiEV service-manual corrections. The supplied applicability data lists U.S. i-MiEV model years 2012, 2013–2014, and 2016–2017; however, the TSB evidence specifically identifies 2013 as Canada only.
Does B1409 affect driving or charging?
Not yet established by verified evidence.
What did the bulletins change?
They instruct replacement of incorrect service-manual information with corrected information for the B1409 diagnosis procedure.