Signal Too Low. Permanent Fault

Signal too low. Permanent fault

Checking wiring and connectors




- Ignition off
- Check the atmospheric pressure sensor and engine control module (ECM) connectors for contact resistance and oxidation according to Checking wiring and terminals. Permanent fault Checking Wiring And Terminals. Permanent Fault
- Check the signal cable between atmospheric pressure sensor terminal 3 and control module terminal 18. Check the power supply cable between atmospheric pressure sensor terminal 1 and control module terminal 74. Check these cables for an open-circuit according to Checking wiring and terminals. Permanent fault Checking Wiring And Terminals. Permanent Fault.
Check the atmospheric pressure sensor signal cable terminal 3 for a short-circuit to ground according to Checking wiring and terminals. Permanent fault Checking Wiring And Terminals. Permanent Fault
- Remedy as necessary
- Try a atmospheric pressure sensor if no fault is found during the above fault-tracing.

Other information
- To connect the breakout box, see Connecting the breakout box. EMS 2000 Connecting The Breakout Box. EMS 2000
- For information about signals, see Signal specification EMS2000.













Select Continue when the fault has been remedied.

Continue - Verification

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Verification




Verification

Verification

Hint: After carrying out the repair, check that the fault has been remedied.




- Reinstall the components, reconnect the connectors etc.
- Ignition on.




- Check whether the diagnostic trouble code (DTC) status changes to intermittent. If the fault has been remedied, the diagnostic trouble code (DTC) status should have changed to intermittent





Is the status of the diagnostic trouble code (DTC) intermittent?

Yes - VERIFIED

No - VERIFICATION FAILED

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VERIFIED - FAULT FOUND

VERIFICATION FAILED - 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 - FAULT-TRACING FAILED

No - Attempt New Test

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Attempt New Test - Checking wiring and connectors

FAULT-TRACING FAILED - No Fault Found

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