Signal Too High - Permanent Fault

ECM-3000 CAMSHAFT POSITION (CMP) SENSOR
SIGNAL TOO HIGH - PERMANENT FAULT

Checking connector



- Ignition off
- Check camshaft position (CMP) sensor connector for contact resistance and oxidation according to [1][2]Checking Wiring and Terminals. Permanent Fault and loose connections [1][2]Checking Wiring and Terminals. Intermittent Faults Check particularly for any damage.
- Assemble connector.
- Start engine

Read the camshaft position (CMP) sensor fault status

When the camshaft position (CMP) sensor is tested diagnostic ready should be displayed. If the fault status displays that the fault is not found, it means that the fault was caused by loose connections.

Does the status display fault found?
Yes - Continue below.
No - Testing Complete.


Checking cables



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

Hint: Use a test screwdriver with at least a 3 W bulb to determine if the cable is short-circuited to supply voltage. Check the ground lead between control module # A65 (# A65) and camshaft position (CMP) sensor connector # 3 for an open-circuit

Other information
- Connecting the breakout box/accessing the control module Connecting the Breakout Box (ECM)
- Location of components, Locations
- 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.

- Start the engine.

Read the camshaft position (CMP) sensor fault status.
When the camshaft position (CMP) sensor is tested diagnostic ready should be displayed.

Does the status display fault found?
Yes - Continue below.
No - Testing Complete.


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.