Faulty Signal

ECM-3000 CAMSHAFT POSITION (CMP) SENSOR
FAULTY SIGNAL

Diagnostic trouble code (DTC) status ECM-3000 Camshaft position (CMP) sensor. Faulty signal



Note! When Reading the Diagnostic trouble code (DTC) status, other stored diagnostic trouble codes (DTCs) and their status will be listed.

Read the Diagnostic trouble code (DTC) status. Check the status of the relevant Diagnostic Trouble Code (DTC).

Was the status of the relevant Diagnostic Trouble Code (DTC) displayed as permanent?
Yes - Continue below.
No - Faulty Signal - Intermittent Fault


Checking cables



Check camshaft position (CMP) sensor connector for contact resistance and oxidation according to [1][2]Checking Wiring and Terminals. Permanent Fault

Check signal cable between control module # A47 and camshaft position (CMP) sensor terminal 2 for an open-circuit according to [1][2]Checking Wiring and Terminals. Permanent Fault, short-circuit to supply voltage according to [1][2]Checking Wiring and Terminals. Permanent Fault, and for a short-circuit to ground according to [1][2]Checking Wiring and Terminals. Permanent Fault

Check power cable between control module # A57 and camshaft position (CMP) sensor terminal 1 for an open-circuit according to [1][2]Checking Wiring and Terminals. Permanent Fault, short-circuit to supply voltage according to [1][2]Checking Wiring and Terminals. Permanent Fault, and for a short-circuit to ground according to [1][2]Checking Wiring and Terminals. Permanent Fault

Check ground lead between control module # A65 and camshaft position (CMP) sensor terminal 3 for an open-circuit according to [1][2]Checking Wiring and Terminals. Permanent Fault

Remedy as necessary.

Other information:
- To connect the breakout box, Connecting the Breakout Box (ECM)
- To access/replace the control module, Engine Control Module (ECM), Replacing
- To access/replace the mass air flow (MAF) sensor, Mass Air Flow (MAF) Sensor, Replacing
- For information about signals, Pinout Values and Diagnostic Parameters

Was a fault found in the wiring or connectors?
Yes - Skip to "Verification"
No - Continue below.


Replacing component
Try a new camshaft position (CMP) sensor. Localize using Locations


Verification



Hint: After carrying out the repair, check that the fault has been remedied.
- Ignition off.
- Reconnect connectors, reinstall components
- Start the engine.
- Read the Diagnostic trouble code (DTC) status. Check the status of the relevant Diagnostic Trouble Code (DTC).

Was the status of the relevant Diagnostic Trouble Code (DTC) displayed as intermittent?
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.