International SA 33 SPN 624 FMI 4: Amber Warning Lamp

Code details

Manufacturer

International (Navistar)

Applies to

International / Navistar body controller (ESC) and multiplexed modules

Fault code

SA 33 SPN 624 FMI 4

J1939 SPN

624

FMI

4 — Voltage below normal, or shorted to low source

Reporting module

Body Controller (source address 33)

Component / signal

Amber Warning Lamp

Truck models in source

3200, 4100, 4300, 4400, 7300, 7400, 7500, 7600, 7700, 8500, 8600, BE 200, CE Bus, CXT, DuraStar, LoneStar, MXT, ProStar, RXT, TranStar, WorkStar

Cause and when it sets

Cause: Output shorted to ground

What to do next

• Read active and inactive codes with the OEM service tool (Diamond Logic Builder can clear previously active codes) and note the occurrence count.
• FMI 4 tells the shop the type of failure to test for: voltage below normal, or shorted to low source.
• Have a heavy-duty diesel technician confirm the fault against the engine or chassis service manual before replacing parts.

Related fault codes

• International SA 23 SPN 624 FMI 5 — Amber Warning light malfunction
• International SA 33 SPN 624 FMI 5 — Amber Warning Lamp
• International SA 33 SPN 624 FMI 6 — Amber Warning Lamp
• PACCAR Fault Code P1653 — Yellow Warning – Short Circuit to Ground or Open Circuit on ECU (D420) Pin (B4)
• PACCAR Fault Code P1655 — Yellow Warning – Short Circuit to Supply on ECU (D420) Pin (B4)