Self-Adjustment Of Damper Motor Limit Positions (ECC)
Self-adjustment of damper motor limit positions (ECC)
Query
Connecting
Connecting the Volvo Scan Tool (ST)
The Volvo Scan Tool (ST) must be connected to the VIDA PC and data link connector (DLC) in the passenger compartment.
Is the Volvo Scan Tool (ST) connected and switched on?
Yes - FAULT FOUND
No - No Fault Found
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Connecting Volvo System Tester
Connecting the Volvo Scan Tool (ST)
- Ignition off.
Insert the blue memory cassette in the Volvo Scan Tool (ST).
Connect adapter 951 1457 Adaptor 951 1457 Adaptor to the cable 951 1458 Scan tool cable 6 meters 951 1458 Scan Tool Cable 6 Meters.
Connect VIDA communication cable between adapter and VIDA PC.
Connect cable 951 1458 Scan tool cable 6 meters 951 1458 Scan Tool Cable 6 Meters from Volvo Scan Tool (ST) to the data link connector (DLC) in the passenger compartment.
Switch on the Volvo Scan Tool (ST) switch.
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DONE
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Self-adjustment of damper motor limit positions (ECC)
Self-adjustment of the damper motor limit positions (ECC)
Self-adjustment of the shutter motor end position
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. A new control module will cause the green indicator LED on the air conditioning (A/C) switch to flash until self-adjustment has been carried out. The green LED on the air conditioning (A/C) switch will flash until the self-adjustment of a new control module has been carried out. When self-adjusting has been correctly completed, the green indicator LED will stop flashing.
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 between the limit positions during normal operation.
- Start the engine (the generator charges)
- Use the Adjusting Motors function to activate self-adjusting on the damper motors. This takes approximately thirty seconds.
Select one of the following options:
1. Exit self-adjustment
2. Read data about problems during self-adjustment.
1 - FAULT FOUND
2 - Checking causes of no self-adjustment
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Checking causes of no self-adjustment
Checking causes of no self-adjustment
Checking causes of no self-adjustment
Check and/or remedy the following if damper motor self-adjustment is interrupted or is not possible.
Start the engine (the generator (GEN) charges). Climate control unit (ECC) terminal #B3 receives a signal from the generator indicating that there is charging. This is to supply the damper motors with maximum power supply during adjustment. If the signal is missing, the adjustment is not permitted to start. Read off the "Generator D+" parameter. Check that the signal is being transmitted.
Switch off the engine. Start the engine again. If self-adjustment has been carried out in the current ignition cycle, the control module will not perform a new self-adjustment until the ignition has been switch off and the engine re-started. Try to perform self-adjustment again.
Read off the diagnostic trouble codes (DTCs). Carry out any fault-tracing according to the instructions.
Check that the control module power supply (terminal #B5) and power ground (terminal #A23) is OK.
Check that the position sensor circuit is OK for both the temperature damper motors.
Check the signals to control module terminals #A7, #A13 and #A22 for the right temperature damper motor.
Check the signals to control module terminals #A7, #A12 and #A22 for the left temperature damper motor.
Check that the damper, linkage, cam discs, damper motors etc are correctly installed and can move freely and smoothly to the limit positions. Check the damper motor shaft and its mounting in the damper spindle in particular for damage and cracks etc.
Other information:
- For information about signals, see Signal specification ECC Signal Specification ECC
- To connect the breakout box, see Connection of breakout box ECC Connection of Breakout Box ECC.
Do you want to try self-adjustment again?
Yes - Attempt New Test
No - DONE
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Attempt New Test - Self-adjustment of the shutter motor end position
DONE - FAULT FOUND
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FAULT FOUND - DONE
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