Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

Or, hide this message: temporarily or permanently

Fluid Level Switch Not Processable

When monitored: Continuously.

Set condition: The CAB sends a signal out through the FLS2 circuit on pin # 17. This signal returns through the closed FLS and FLS wires to pin # 35.

Possible causes:

> Hydraulic unit
> 14-way connection between valve block and CAB
> Brake fluid level switch # 2 ground circuit shorted to ground
> Brake fluid level switch # 2 signal circuit shorted to ground
> ABS only CAB installed on a vehicle equipped with traction control