Description

Duty factor of the PWM signal of the Bosch EDC is smaller than allowed.

Effects on the driving operation

Hard shifts

Possible causes

The engine control unit does not match the signal source set in the dataset (see dataset constant: ENG_ECU_TYPE_).

The engine control unit delivers a PWM signal outside its specification (engine control unit defective).

Place of action

No description available.

Instruction

Verify that dataset and engine control unit match. Make corrections if required.

Setting conditions of the event

No description available.

Test conditions of the event

No description available.

Final function check

If the defective component cannot be clearly identified, you should try to reproduce the fault:

• Reinstall the component in the vehicle.
• Test the function.

After the fault has been eliminated, the following steps have to be carried out:

• Conduct a test drive with function check.
• Read out the fault memory.
• Check the transmission for leaks.
• Perform a final visual inspection.

These steps are necessary to ensure the entire vehicle functions.

See also:

		Aftersales service index