Incorrect position

Incorrect position

Checking the component

- Ignition on.
The climate control module (CCM) has registered that one or more damper motor modules (DMM) have an incorrect number of steps between the end positions during damper regulation.
Check which damper motor has an incorrect number of steps between the end positions by:
- Read out the actual range to identify the number of stages between the upper and lower end positions measured by the damper motor module (DMM).
- Read out the preset range to identify the number of stages between the upper and lower end positions stored by the damper motor module (DMM).
- Compare these values to check the tolerances.
The defective damper motor has been identified if the actual range of any of the damper motors is outside the preset range by more than the tolerance.
Check that the damper motor is correctly installed.
Check that the damper is not blocked and that is has not become stuck. Look, for example, for a screw, cable or foam rubber gasket.

Other information:
- Climate control, location of components Climate Control, Location of Components
- Damper motor temperature, replacing Service and Repair
- Damper motor defroster, replacing Service and Repair
- Damper motor recirculation, replacing Service and Repair
- Damper motor air distribution, replacing Service and Repair

Continue - Calibration

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Calibration

Warning! When activating this function, calibration of the Climate Control Module (CCM) starts. After carrying out calibration read off of the diagnostic trouble codes (DTCs) starts. To ensure that diagnostics for the Climate Control Module (CCM) have been carried out, delay for 30 seconds before reading out diagnostic trouble codes (DTCs) after calibration.

Note! Climate Control Module (CCM) and damper motors can be affected by the temperature. The vehicle should have normal room temperature when performing this service.

Carry out calibration as follows:
- Ignition on.
- Click on the VCT2000 symbol. Wait until calibration has been carried out and diagnostic trouble codes (DTCs) read out.
- Ignition off.
This function controls the components that communicate with the Climate Control Module (CCM) via LIN bus 1 and LIN bus 2. In the event of a fault in any of the LIN buses, diagnostic trouble codes (DTCs) CCM-0070 to CCM-0071 will be stored depending on the fault. These diagnostic trouble codes (DTCs) can only be stored in conjunction with this diagnostic function.

Continue - Verification

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Checking the component
Click on the VCT2000 symbol.
There is an internal fault if the damper motor range shows 0 or 4095. Replace the Damper motor module (DMM).

Does the damper motor range show 0 or 4095?

Yes - Replacing the control module

No - Checking the component

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Verification

Verification

Verification

Hint: After carrying out the repair, check that the fault has been remedied.

- Ignition off
- Reinstall the connectors, components etc.
- Ignition on.
Check that the relevant diagnostic trouble code (DTC) has switched status from permanent to intermittent fault.
Check also that diagnostic trouble code (DTC) CCM-0070, CCM-0071 CCM-0072 or CCM-0073 has not been stored during identification of the damper motors.
These diagnostic trouble codes (DTCs) can only be stored when identifying damper motors. They mean that the identification has failed for some reason.
Remedy by correctly identifying the damper motor. Fault-trace according to the relevant information.

Has the status of the diagnostic trouble code (DTC) changed?

Yes - VERIFIED

No - VERIFICATION FAILED

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VERIFICATION FAILED - Checking the component

VERIFIED - Fault Found

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Checking the component
Check that the throttle in the throttle module can be closed and opened completely without binding. Check that the damper is not blocked and that is has not become stuck.

Other information:
- Climate control, location of components Climate Control, Location of Components

Continue - Calibration

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Verification
Verification
VERIFICATION FAILED - Information

VERIFIED - Fault Found

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Information

Information

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.

Do you want to exit fault-tracing?

Yes - FAULT-TRACING FAILED

No - Attempt New Test

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FAULT-TRACING FAILED - FAULT-TRACING FAILED

Attempt New Test - Faulty position

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Replacing the control module
Replace the control module.

Other information:
- Climate control, location of components Climate Control, Location of Components
- Damper motor temperature, replacing Service and Repair
- Damper motor defroster, replacing Service and Repair
- Damper motor recirculation, replacing Service and Repair
- Damper motor air distribution, replacing Service and Repair

Continue - Identification

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Identification

Hint: Identification of damper motors requires that the relevant damper motor is run to the limit positions. These runs can take up to 30 seconds. When identifying the damper motors it is important that a battery charger is connected.

- Ignition off.
- Reinstall the connectors, components etc.

Note! Ensure that nothing is physically preventing the damper from moving to its limit positions. If something is blocking the damper, an identification can cause problems which are extremely difficult to correct.Climate Control Module (CCM) and damper motors can be affected by the temperature. The vehicle should have normal room temperature when performing this service.

Carry out identification as follows:
- Ignition on.
- Click on the VCT2000 symbol. Wait until identification has been carried out.
- Ignition off.

Continue - Verification

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Faulty position

- Ignition on.
Read off the car structure week by clicking on the VCT2000 symbol.
1. Vehicles with structure week up to and incl. 200445, that is, year 2004 week 45.
2. Vehicles with structure week from and incl. 200446, that is, year 2004 week 46.

1 - Checking the component

2 - Checking the component

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Checking the component

Continue - Verification

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Verification
Verification
VERIFICATION FAILED - Checking the component

VERIFIED - Fault Found

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Checking the component
Click on the VCT2000 symbol.
There is an internal fault if the damper motor range shows 0 or 4095. Replace the Damper motor module (DMM).

Does the damper motor range show 0 or 4095?

Yes - Replacing the control module

No - Checking the component

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