FREE REPAIR MANUALS & LABOR GUIDES 1982-2013 Vehicles
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Signal Missing - Intermittent Fault






Signal missing. Intermittent fault

Checking wiring and connectors
Check the evaporative emission system (EVAP) valve connector. Check for contact resistance and oxidation. Check for loose connections.
Check the signal cable between control module terminal #A9 (#A9) and evaporative emission system (EVAP) valve terminal 2. Check the power supply between system relay terminal 3 and evaporative emission system (EVAP) valve terminal 1. Check for an intermittent open-circuit.

Other information:
- To connect the breakout box / access the control module, see Connecting the breakout box, B5244T5, B5254T2 Connecting the Breakout Box
- For the location of components on 5 cylinder engines, see Location of components Locations
- For the location of components on 6 cylinder normally aspirated engines, see Location of components Locations
- For the location of components on 6 cylinder turbocharged engines, see Location of components Locations
- For information about signals on 5 cylinder engines, see Signal specification Signal Specification, ECM
- For information about signals on 6 cylinder engines, see Signal specification Signal Specification, ECM
- Checking wiring and terminals Checking Wiring And Terminals.














Continue - Fault-tracing information

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Fault-tracing information




Information

Fault-tracing information
If the fault is intermittent, do not verify fault-tracing if the fault does not recur.
It is possible to view the information again, or leave fault-tracing for this diagnostic trouble code (DTC).

Do you want to view the information again?

Yes - Attempt New Test

No - Fault Found

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Attempt New Test - Checking wiring and connectors

FAULT FOUND - DONE

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