Signal Too High - Intermittent Fault

ECM-4000 CANISTER PURGE (CP) VALVE
SIGNAL TOO HIGH - INTERMITTENT FAULT

Checking cables



Check signal cable between control module # A9 (# A9) and canister purge (CP) valve terminal 2 for a short-circuit to supply voltage according to [1][2]Checking Wiring and Terminals. Intermittent Faults

Other information
- Connecting the breakout box/accessing the control module Connecting the Breakout Box (ECM)
- To access/replace the canister purge (CP) valve, Canister Purge (CP) Valve, Replacing
- 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.