Signal Too Low
Signal too low
Checking the status
- Ignition on.
Activate the valve in the leak diagnostic unit to check whether the fault is permanent or intermittent.
The valve clicks when it is activated.
The fault is permanent if the valve does not activate.
The fault is intermittent if the valve activates.
Continue - Checking the wiring
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Checking the wiring
Check the signal cable for the valve between control module terminal #B40 (#B50) and leak diagnostic unit terminal #3. Check for a short-circuit to ground.
Remedy as necessary.
Other information:
- Checking wiring and terminals Checking Wiring And Terminals
- For resistance values, see Component specifications Specifications
- To connect the breakout box, see Connecting the breakout box, B5254T2 Connecting the Test Box
- For information about signals on 5 cylinder engines, see Signal specification Signal Specification
- For information about signals on 6 cylinder engines, see Signal specification Signal Specification
- To access or replace the leak diagnostic unit, see Leak diagnostic pump, replacing Service and Repair
Continue - Verification
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Verification
Verification
Hint: After carrying out the repair, check that the fault has been remedied.
- Ignition on
- Activate the valve in the leak diagnostic unit.
The valve should click.
Check that the function is OK.
Is the function OK?
Yes - Verification completed
No - Fault-tracing information
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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 - Exit Fault-Tracing
No - Attempt New Test
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Attempt New Test - Checking the status
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