Signal Too Low. Permanent Fault

Signal too low. Permanent fault

Checking the connectors




- Ignition off
Check the connector of boost pressure sensor 2 (MAP) for contact resistance and oxidation as described in Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.









Was a fault detected?

Yes - Verification

No - Checking cable and component

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Checking cable and component




- Ignition off
Check the signal cable between boost pressure sensor 2 (MAP) terminal #3 and control module terminal #13 and the power supply cable between boost pressure sensor 2 (MAP) terminal #1 and control module terminal #74 for open circuit as described in Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Check boost pressure sensor 2 (MAP) terminal #3 for short circuit to ground as described in Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.

Hint: Boost pressure sensor 2 (MAP) is supplied 5 V from control module terminal #74.

If no fault is detected during the above fault tracing, try a new boost pressure sensor 2 (MAP) as described in Boost pressure sensor 2, replacing Boost Pressure Sensor 2, Replacing as necessary.

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









Continue - Verification

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Verification




Verification

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




- Reinstall the components, reconnect the connectors etc.
- Start the engine
- Rev the engine above 4000 rpm twice.




- 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 - Exit fault-tracing

No - Attempt New Test

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Attempt New Test - Checking the connectors

FAULT-TRACING FAILED - No Fault Found

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