Signal Too Low - Permanent Fault
Signal too low. Permanent fault
Checking components and wiring
Check the signal cable between control module terminal #A23 (#A23) and boost pressure sensor terminal 1. Check for a short-circuit to ground.
Hint: With the ignition on and the boost pressure sensor connector disconnected the voltage between terminal 1 and ground terminal should be approximately 5 V.
Remedy as necessary.
Other information
- To connect the breakout box / access the control module, see Connecting the breakout box, B5244T5, B5254T2 Connecting the Breakout Box
- To access or replace the boost pressure sensor, see Temperature and pressure sensor, replacing Service and Repair
- 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
- Checking wiring and terminals Checking Wiring And Terminals.
Continue - Verification
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Verification
Verification
Hint: After carrying out the repair, check that the fault has been remedied.
- Ignition off.
- Reconnect connectors, reinstall components
- Ignition on.
- Read off boost pressure sensor signal.
With the ignition on voltage should be approximately 1.9 V.
Is the signal OK?
Yes - VERIFIED
No - VERIFICATION FAILED
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VERIFICATION FAILED - Fault-tracing information
VERIFIED - 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 wiring
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