Signal Too Low - Permanent Fault

ECM-1600 BOOST PRESSURE SENSOR
SIGNAL TOO LOW - PERMANENT FAULT

Checking component and wiring



Check signal cable between control module #A23 (#A23) and boost pressure sensor terminal 1 for a short-circuit to ground according to [1][2]Checking Wiring and Terminals. Permanent Fault

Hint: With the ignition on and boost pressure sensor connector disconnected the voltage between terminal 1 and ground terminal should be approximately 5 V.

Remedy as necessary.

Other information
- Connecting the breakout box/accessing the control module Connecting the Breakout Box (ECM)
- To access/replace the boost pressure sensor, Manifold Absolute Pressure (MAP) Sensor, Replacing
- For information about signals, see Diagnostic Parameters and Pinout Values. Signal Description, ME7, B5XX4T


Verification



Hint: After carrying out the repair, check that the fault has been remedied.
- Ignition off.
- Reconnect connectors, reinstall components
- Ignition on.
- Read boost pressure sensor signal.
With the ignition on voltage should be approximately 1.9 V.

Is the signal OK?
Yes - Testing Complete.
No - Continue below.


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.