P0325

P0325 00

Knock Detection Circuit, No Activity







Fault symptom
- Check Engine
- Poor engine torque.

On-board diagnosis

Type of diagnosis:
- Continuous

Enable criteria:
- Engine running.
- Coolant temperature exceeds 60 degree C.
- No fuel shut-off.
- No fault on main relay (P0685, P0686 and P0687).

Fault criteria:
- No pulses on the knock lead from CDM during 16 combustions.

Dependent:
- No fault in the Combustion Detection Module, P1315.

System reaction to a fault:
- Torque limited to max. 170 Nm.

OK report:
- Pulse on the knock lead from CDM during 16 combustions.

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 connecting leads or in the CDM.

Functions in the diagnostic tool related to the fault:

Test value:
- Knock Control
(See also description of readings/activations in diagnostic tool)