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:
- Component location Component Location, Climate Control Module (CCM)
- Actuator damper climate control system driver's side Actuator Damper Climate Control System Driver's Side
- Actuator register duct footwell Actuator Register Duct Footwell
- Actuator recirculation Damper Motor Recirculation, Replacing
- Actuator, mixer damper, L.H.D Actuator, Mixer Damper, L.H.D
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.
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
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 CCM-0070, CCM-0071 or CCM-0072 have not been generated in connection with an identification of damper motors.
These diagnostic trouble codes can only be generated in connection with an identification of damper motors and means that identification has failed for some reason.
Remedy by attempting to identify the damper motors again. Alternatively fault-trace the relevant diagnostic trouble codes (DTCs).
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:
- Component location Component Location, Climate Control Module (CCM)
Continue - Calibration
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Verification
Verification
VERIFICATION FAILED - Information
VERIFIED - FAULT FOUND
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Information
Attempt New Test - Checking the component
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Replacing the control module
Replace the control module.
Other information:
- Component location Component Location, Climate Control Module (CCM)
- Actuator damper climate control system driver's side Actuator Damper Climate Control System Driver's Side
- Actuator register duct footwell Actuator Register Duct Footwell
- Actuator recirculation Damper Motor Recirculation, Replacing
- Actuator, mixer damper, L.H.D Actuator, Mixer Damper, L.H.D
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 - 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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