Signal Too High - Permanent Fault

Signal too high. Permanent fault

Checking the wiring
Check the power supply cable between control module terminal #A39 (#A39) and mass air flow (MAF) sensor terminal #4. Check for a short-circuit to supply voltage.
Check the power supply cable between control module terminal #A39 (#A39) and boost pressure sensor terminal #1. Check for a short-circuit to supply voltage.
Check the power supply cable between control module terminal #A39 (#A39) and air conditioning (A/C) pressure sensor terminal #3. Check for a short-circuit to supply voltage.
Check the power cable between control module terminal #B10 (#B20) and fuel tank pressure sensor connector terminal #3. Check for a short-circuit to supply voltage.

Hint: Read off the 5-volt power supply by clicking on the VCT2000 symbol.

Remedy as necessary.

Other information:
- To connect the breakout box, see Connecting the breakout box, B5244T5, B5254T2 Connecting the Breakout Box
- For information about signals on 5 cylinder engines, see Signal specification Signal Specification, ECM
- For information about signals on 6 cylinder engines, see Signal specification Signal Specification, ECM
- To access or replace the mass air flow (MAF) sensor, see
- To access or replace the boost pressure sensor, see Temperature and pressure sensor, replacing Service and Repair
- Checking wiring and terminals Checking Wiring And Terminals.









Continue - Verification

-------------------------------------------------

Verification




Verification

Verification

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




- Ignition on.
- Read off the 5 volt supply.
The value must be 5 V.





Is the value OK?

Yes - VERIFIED

No - VERIFICATION FAILED

------------------------

VERIFIED - Fault Found

VERIFICATION FAILED - Fault-tracing information

PAPER - No Fault Found

-------------------------------------------------

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

------------------------

FAULT-TRACING FAILED - FAULT-TRACING FAILED

Attempt New Test - Checking the wiring

-------------------------------------------------