Signal Missing - Intermittent Fault

ECM-4010 EVAP CANISTER SHUT-OFF VALVE
SIGNAL MISSING - PERMANENT FAULT

Checking cables and connectors



Check EVAP canister shut-off valve connector for contact resistance and oxidation according to [1][2]Checking Wiring and Terminals. Intermittent Faults and loose connections according to [1][2]Checking Wiring and Terminals. Intermittent Faults

Check signal cable between control module # B40 (# B50) and EVAP canister shut-off valve terminal 2 and power supply between system relay terminal 3 and EVAP canister shut-off valve terminal 1 for an intermittent open-circuit 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 EVAP canister shut-off valve, EVAP Canister Shut-Off 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.