International SA 33 SPN 2609 FMI 7: AC - Service Now. Fan Problem/Clogged Pipe

Code details

Manufacturer

International (Navistar)

Applies to

International / Navistar body controller (ESC) and multiplexed modules

Fault code

SA 33 SPN 2609 FMI 7

J1939 SPN

2609

FMI

7 — Mechanical system not responding or out of adjustment

Reporting module

Body Controller (source address 33)

Component / signal

Cab A/C Refrigerant Compressor Outlet Pressure

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

Logical signal

BC_RCD_Pressure_Raw_Si gnal

Cause and when it sets

Cause: At the current operating ambient temperature the engine fan isn't working, one of the AC lines has become plugged or the system is over-charged. The compressor is shut off to prevent damage.

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 7 tells the shop the type of failure to test for: mechanical system not responding or out of adjustment.
• Have a heavy-duty diesel technician confirm the fault against the engine or chassis service manual before replacing parts.

Related fault codes

• International SA 33 SPN 2609 FMI 0 — HVAC Pressure Sensor reading above normal range
• International SA 33 SPN 2609 FMI 1 — HVAC Pressure Sensor reading below normal range
• International SA 33 SPN 2609 FMI 16 — HVAC High Pressure Protection