T8 / P2303 00

Read the instructions below then start the fault diagnostic procedure.

Symptom: Fault indicator lamp (for further information see WIS Fault diagnosis, general) Flickering pressure indicator in MIU. Misfiring Jerky movements. Performance loss.

P2303 00

Fault symptom

Fault indicator lamp (for further information see WIS Fault diagnosis, general)

Flickering pressure indicator in MIU.

Misfiring

Jerky movements.

Performance loss.

On-board diagnosis

Type of diagnosis:

Continuous

Enable criteria:

Engine running.

Fault criteria:

Output voltage below 2 V when the control module is not grounding.

The condition exists for more than 1 s.

Dependent:

None

System reaction to a fault:

Fuel to the injector in question is cut off.

Closed loop is blocked.

Fuel adaption is blocked and reset.

OK report:

Fault criteria NOT fulfilled for 2 s.

Fault handling:

Type III

(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:

Electrical fault in the ignition coil connecting leads.

Functions in the diagnostic tool related to the fault:

Test value:

•	Combustion Signal cyl 2+4

Activation:

•	Ignition Coil Cyl 2

(See also description of readings/activations in diagnostic tool)