Signal Missing

Signal missing

Checking the component and wiring
Check the leak diagnostic unit connectors. Check for contact resistance and oxidation.
Check the resistance of the pump motor between the leak diagnostic unit connector terminals #1 and #4 (leak diagnostic pump side).
Check the signal cable between engine control module (ECM) terminal #B33 (#C33) and leak diagnostic pump terminal #1. Check for an open-circuit.
Check the power supply cable between system relay terminal #5 and leak diagnostic unit terminal #4. Check for an open-circuit.
Remedy as necessary.

Other information
- Connecting the breakout box Connecting The Breakout Box, Engine Control Module (ECM)
- Signal specification Signal Specification, Engine Control Module (ECM)
- Component specifications [1][2]Electrical Specifications
- Leak diagnostic pump Service and Repair Leak diagnostic pump Service and Repair
- Checking wiring and terminals Checking Wiring and Terminals










Continue - Fault-tracing information

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Fault-tracing information




Information

Fault-tracing information
Fault-tracing is not followed by verification for this fault.

Hint: After the diagnostic trouble codes (DTCs) are erased, the function of the leak diagnostic unit can be checked by running a quick test of the fuel tank system in the vehicle communication socket. If there is a fault, the fault status will be "FAULT FOUND" on the leak diagnostic unit.

The information can be displayed again or fault-tracing this fault can be interrupted.

Do you want to view the information again?

Yes - Attempt New Test

No - Fault Found

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Attempt New Test - Checking the component and wiring

Fault Found - DONE

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