Faulty Signal

ECM-4010 EVAP CANISTER SHUT-OFF VALVE
FAULTY SIGNAL

Checking for intermittent fault



- Ignition on.
- Activate EVAP canister shut-off valve.

A "click" should be heard when the EVAP canister shut-off valve is activated.

Is the EVAP canister shut-off valve working?
Yes - Continue below.
No - Skip to "Checking Connector (Resistance)"


Fault-tracing information



Control module previously registered a fault. The fault is now no longer present.


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


Checking Connector (Resistance)



- Ignition off.

Check EVAP canister shut-off valve connector for contact resistance and oxidation.Checking Wiring and Terminals


Checking Connector (Activating EVAP Canister Shut-off Valve)



- Reinstall components, reconnect connectors etc.
- Ignition on.

Activate EVAP canister shut-off valve.

Check if a "click" is heard from the EVAP canister shut-off valve.

If the EVAP canister shut-off valve now functions it means that the cause of the fault has been loose connections in the connector.

Is the EVAP canister shut-off valve working?
Yes - Testing Complete.
No - Continue below.


Checking wiring and components



Check cable between control module # B40 and EVAP canister shut-off valve terminal 2 for an open-circuit according to [1][2]Checking Wiring and Terminals. Permanent Fault, a short-circuit to ground according to [1][2]Checking Wiring and Terminals. Permanent Fault, and a short-circuit to supply voltage according to [1][2]Checking Wiring and Terminals. Permanent Fault

Check cable between EVAP canister shut-off valve terminal # 1 and system relay terminal # 3 for an open-circuit according to [1][2]Checking Wiring and Terminals. Permanent Fault

Remedy as necessary.

Other information:
- To connect the breakout box, Connecting the Breakout Box (ECM)
- To access/replace the control module, Engine Control Module (ECM), Replacing
- To access/replace the EVAP canister shut-off valve, EVAP Canister Shut-Off Valve, Replacing
- For information about signals, Pinout Values and Diagnostic Parameters

Was a fault found in the wiring?
Yes - Skip to "Verification"
No - Continue below.


Replacing component



- Ignition off.
Try a new EVAP canister shut-off valve according to EVAP Canister Shut-Off Valve, Replacing


Verification



Hint: After carrying out the repair, check that the fault has been remedied.
- Ignition off.
- Reconnect connectors, reinstall components
- Ignition on.
- Activate EVAP canister shut-off valve.

A "click" should be heard when the EVAP canister shut-off valve is activated.

Is the EVAP canister shut-off valve working?
Yes - Testing Complete.
No - Continue below.


Fault-tracing information
The fault should have been detected and remedied. As this is not the case fault-tracing has failed.
Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.