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SPN 523354 — factory code KAMAZ, MAZ and YaMZ

Safe to driveDrivable, but watch it yourself

SPN 523354 is a manufacturer number outside the standard J1939 table: different makes can put different things under it. Below — how it is worded by KAMAZ, MAZ and YaMZ, and what the second half of the code (FMI) means.

KAMAZMAZYaMZ

KAMAZ

FMI 2Injector driver chip A (CY33X)
FMI 3Injector driver chip A (CY33X)
FMI 4Injector driver chip A (CY33X)
FMI 12Injector driver chip A (CY33X)

MAZ

FMI 2Injector driver chip fault - Communication error with CY33X. Blink code: 1-5-3. The engine will not start. Power will be reduced. Repair: Replace the ECU.
FMI 3Injector driver chip fault - CY33X reset. Blink code: 1-5-3. The engine will not start. Power will be reduced. Repair: Replace the ECU.
FMI 4Injector driver chip fault - CY33X locked. Blink code: 1-5-3. The engine will not start. Power will be reduced. Repair: Replace the ECU.
FMI 12Injector driver chip fault - CY33X in test mode. Blink code: 1-5-3. The engine will not start. Power will be reduced. Repair: Replace the ECU.

YaMZ

FMI 2Injector driver IC fault (Communication error with CY33X). Blink code: 1-5-3. The engine will not start. Power will be reduced. Repair: Replace the ECU.
FMI 3Injector driver IC fault (CY33X reset). Blink code: 1-5-3. The engine will not start. Power will be reduced. Repair: Replace the ECU.
FMI 4Injector driver IC fault (CY33X locked). Blink code: 1-5-3. The engine will not start. Power will be reduced. Repair: Replace the ECU.
FMI 12Injector driver IC fault (CY33X in test mode). Blink code: 1-5-3. The engine will not start. Power will be reduced. Repair: Replace the ECU.

What FMI means in J1939

SPN 523354 FMI 2523354/2 · 523354.2data erratic or intermittent
SPN 523354 FMI 3523354/3 · 523354.3voltage above normal or shorted high
SPN 523354 FMI 4523354/4 · 523354.4voltage below normal or shorted to ground
SPN 523354 FMI 12523354/12 · 523354.12faulty device or component

Can I keep driving

Safe to drive. Below — how much time you have and what happens if you keep going.

What happens if you keep driving

Time you have: Drivable, but watch it yourself

This is an electrical fault: an open, a short or a bad contact in the sensor circuit. The value it measures is most likely fine.

You can drive. But until the circuit is repaired this system runs blind and cannot warn you about a real failure.

Nearby: other

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