ME9 / P000A 00
Read the instructions below then
start the fault diagnostic procedure.
Symptom: Malfunction Indicator Lamp
Intake Cam Angle Bank 1, Control Failure
Fault symptom
Malfunction Indicator Lamp
On-board diagnosis
Type of diagnosis:
Enable criteria:
| Rotational speed at least 1000 rpm. |
| No fault on the camshaft position sensor or solenoid and no chain fault. |
| The engine must work so that the cam phasing mechanism is comanded to carry out cam phasing. 4 cam phasing cycles must have been executed in each direction and each position shall have been at least 5 seconds. |
Fault criteria:
| The cam angle changes to the requested position too slowly. |
| The cam angle cannot assume the requested position. |
Fault handling:
| (See section Fault handling III, "Other emission-related components and functions" for more information.) |
Checking the wiring harness
Move the wiring harness at several spots and in several directions to reveal intermittent breaks and short-circuits. Check switches, connectors and crimp connections for oxidation, retracted pins and pin clamping force.
Diagnostic help
Diagnosis regards:
| Correct oil pressure is required for the cam phasing mechanism to operate. The wrong viscosity or the presence of air due to a low level can generate a diagnostic trouble code. The diagnostic tool contains a special function for checking camshaft control. |
| Electrical fault in connecting leads or component. |
Functions in the diagnostic tool related to the fault:
| • | Requested intake cam angle, bank 1 |
| • | Deviation from Requested Intake Cam Angle Bank 1 |
| • | Intake Cam Angle Solenoid Bank 1 |
| (See also description of readings/activations in diagnostic tool) |
