Service bulletin 9100637

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

NHTSA's summary

Actions: Perform a check for the internal defect failure description or DTC B2232-00 Fault momentarily not present: If (fault frequency counter <= 3) then clear the fault code memory, do NOT exchange the ECU, retest. If frequency counter > 3 then check whether there are sources of potential EMI close to the installed position of the ECU that do not comply with the standard vehicle configuration. Test not OK: Eliminate the source of EMI, Test OK: Inspect the ECU for any damages like water intrusion/corrosion damage inside the ECU from water? Test not OK: Rectify the damage to the ECU, clear the fault code memory, no parts exchange, Test OK: Is there a repeat of the anomaly for the same fault manifestation (with any ECU exchange)? If No: Clear the fault code memory, in-depth fault search in the environment of the ECU + in-depth questions to the customer about the situations when the fault occurred? *ECU-exchange only when an external failure cause can be ruled out.* If Yes: Replace the ECU. If (fault momentarily present) or (repeated repair with the same fault) Program the ECU with the most recent SW, repeat the check for the fault. If the fault is no longer present... finished If the fault is still present... replace the ECU

The document

• NHTSA's copy of the document (PDF)
• If that address does not open, try this one

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Electrical system

Trouble codes named

B2232

Listing a model year does not mean every vehicle of it is concerned: the document says which.

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