Signal Too Low

Signal too low

Checking components and connections
Check the signal cable from engine control module (ECM) terminal #B7 (#B17) to leak diagnostic pump terminal #1. Check for an open-circuit. Check for a short-circuit to ground.
Check the engine control module (ECM) and leak diagnostic pump connectors. Check for contact resistance and oxidation.
Remedy as necessary.

Other information:
- To connect the breakout box, see Connecting the breakout box Connecting the Breakout Box
- For information about signals, see Signal specification Signal Description / Specification
- To access or replace the leak diagnostic pump, see Leak diagnostic pump, replacing Service and Repair
- To fault-trace the wiring and terminals, see Checking wiring and terminals Checking Wiring And Terminals.






Continue - Verification

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Verification




Information

Fault-tracing information
In case of this defect, troubleshooting is not followed by verification.
The information can be displayed again or the fault-tracing for 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 components and connections

FAULT FOUND - Fault Found

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Fault-tracing information




Information

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.

Do you want to exit fault-tracing?

Yes - FAULT-TRACING FAILED

No - Attempt New Test

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FAULT-TRACING FAILED - FAULT-TRACING FAILED

Attempt New Test - Checking components and connections

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