Signal Too High - Intermittent Fault

ECM-6110 ENGINE COOLING FAN (FC) RELAY LOW SPEED
SIGNAL TOO HIGH - INTERMITTENT FAULT

Checking component and wiring



Check cable between engine control module (ECM) # A7 (# A7) and engine cooling fan (FC) relay # IN1 for an intermittent short-circuit to supply voltage according to [1][2]Checking Wiring and Terminals. Intermittent Faults

Remedy as necessary.

Other information
- Connecting the breakout box/accessing the control module Connecting the Breakout Box (ECM)
- For information about signals, see Diagnostic Parameters and Pinout Values. Signal Description, ME7, B5XX4T


Fault-tracing information
If the fault is intermittent, do not verify fault-tracing if the fault does not recur.