Blocked
Blocked
Checking the function of the temperature damper motor
- Ignition on
- Start the blower fan
- Read off the position sensors
- Activate the damper motor by slowly turning the temperature selector between the minimum and maximum heat settings.
Check that position sensor values change when the temperature control is turned. If the value changes this indicates that damper motor is OK.
Does the position sensor value change?
Yes - Intermittent fault
No - Checking components
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Checking components
Check that the temperature damper can move freely and smoothly to the limit positions. If damper is OK, try a new damper motor.
Remedy as necessary.
Other information:
- To access the temperature damper motor, see Temperature damper motor Temperature
- For other information, see Electrical / electronic system specifications [1][2]Specifications.
Continue - Self-adjustment of the shutter motor end position
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Self-adjustment of the shutter motor end position
Self-adjustment of damper motor end positions
Self-adjustment of damper motor end positions. Electronic climate control (ECC), Manual climate control (MCC), Standard (STD)
Note! Self-adjustment must be carried out if the control module or damper motor is replaced or the damper motor or its linkage has been removed. The indication LED on the climate control module panel will flash during adjustment.
Hint: During self-adjustment the control module runs the damper motors to their limit positions. The control module then stores the value returned from the position sensor for the damper motor. The control module is then able to operate the motor betweenthe limit positions during normal operation.
- Start the engine (the generator charges)
- Activate self-adjustment. The self-adjustment takes thirty seconds.
Note! Self-adjustment can only be carried out once in the same ignition cycle. To run the self-adjustment again, switch off the ignition, wait 10 seconds and start the engine again.
The indication LED stops flashing when the self-adjustment is complete.
Continue - FAULT FOUND
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FAULT FOUND - Verification
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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
- Start the blower fan
- Read off the position sensor
- Activate the damper motor by slowly turning the temperature selector between the minimum and maximum heat settings.
Check that position sensor values change when the temperature control is turned. If the value changes this indicates that damper motor is OK.
Does the position sensor value change?
Yes - VERIFIED
No - VERIFICATION FAILED
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VERIFICATION FAILED - Fault-tracing information
VERIFIED - FAULT FOUND
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Fault-tracing 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 - Exit fault-tracing
No - Attempt New Test
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Attempt New Test - Checking the function of the temperature damper motor
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Intermittent fault
Fault-tracing indicates that the climate control module registered a fault previously in the damper motor but the fault is now no longer present. The earlier may have been caused by the sticking, dirt in the mechanism or in the linkage.
Other information:
- To access the temperature damper motor, see Temperature damper motor Temperature
- For other information, see Electrical / electronic system specifications [1][2]Specifications.
Continue - Fault-tracing information
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Fault-tracing information
Information
Fault-tracing information
If the fault is intermittent, do not verify fault-tracing if the fault does not recur.
It is possible to view the information again, or leave fault-tracing for this diagnostic trouble code (DTC).
Do you want to view the information again?
Yes - Attempt New Test
No - FAULT FOUND
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Attempt New Test - Checking the function of the temperature damper motor
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