Fault Conditions

Canister Close Valve Circuit. Open / Short to Ground.







Fault symptoms
- Market US/CA: CHECK ENGINE.

On-Board Diagnostics
Type of diagnosis:
- Continuous. But interrupted when fault criteria fulfilled and will not restart until next driving cycle.

Enable criteria:
- General condition for this diagnostic trouble code: Atmospheric pressure must exceed 72 kPa as well as coolant and intake air temperature must exceed -7 °C.
- Engine running. Main relay voltage exceeding 10V. Output not active.

Fault criteria:
- Voltage below 2V for 1 s.

Dependents:
- None.

System reaction to a fault:
- Fuel adaptation and purging are blocked.

OK report:
- Enable criteria fulfilled. Fault criteria not fulfilled within 60 s.

Fault handling: Fault Handling III, Other Emission-Related Component & Function
- Type III.

Diagnostic help
Fault diagnosis concerns an electrical fault in the connecting leads or in the valve.
Functions in the diagnostic tool related to the fault:
- Activate valve output.

For information, Tech 2 Menu Structure, DTC Menu, Read Value, Activate, Sys Info

Checking the wiring
Jiggle the wiring harness at several points and in different directions to detect intermittent breaks and short circuits. Observe the multi meter, diagnostic tool or test lamp during the check.

Proceed to Diagnostic Procedures Checking the Valve's Power Supply