Signal Too High / Signal Missing
Signal too high / Signal missing
Checking passenger compartment temperature sensor
- Ignition on
- Check that the value from the sensor is within its permitted range. Use a thermometer.
Alternately blow hot and cold air onto the sensor. Check that the value displayed on the sensor changes.
Shine a light through the grille over the passenger compartment temperature sensor. Check for anything that could obstruct the airflow through the pipe.
Do not damage the sensor. The sensor is located just inside the grille.
Remedy as necessary.
Other information:
- Climate control module (CCM), replacing Service and Repair
Is the sensor value correct?
Yes - Fault-tracing information
No - Replacing the component
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Replacing the component
The fault is probably a defective passenger compartment temperature sensor. This type of fault means that the entire control module must be replaced. The passenger compartment temperature sensor cannot be replaced separately.
Replace the control module. See Climate control module (CCM), replacing Service and Repair
Continue - Checking LIN Bus
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Self-adjustment
Limit positions for damper motor self-adjustment
Choice of climate control
1. Electronic climate control
2. Manual climate control (MCC).
Select the type of climate control.
1 - Limit positions for damper motor self-adjustment
2 - Limit positions for damper motor self-adjustment
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Limit positions for damper motor self-adjustment
Hint: Carry out self adjustment to define the shutter motor limit positions after replacing the control module or shutter motors, and when a shutter motor or link has been removed.
- Ignition off
- Reinstall the connectors, components etc.
- Ignition on.
Activate the self-adjustment. Wait at least 30 seconds.
Ignition off for at least 1 minute.
Start the engine.
Continue - DONE
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Limit positions for damper motor self-adjustment
Hint: After replacing the control module or shutter motors, and when a shutter motor or link has been removed, carry out self adjustment to define the shutter motor limit positions.
- Ignition off
- Reinstall the connectors, components etc.
- Ignition on.
Activate the self-adjustment. Wait at least 30 seconds.
Ignition off for at least 1 minute.
Start the engine.
Select Continue
Continue - DONE
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DONE - Verification
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Verification
Hint: After carrying out the repair, check that the fault has been remedied.
- Ignition off
- Reinstall the connectors, components etc.
- Ignition on.
Read off the passenger compartment temperature. Vary the temperature at the passenger compartment temperature sensor to check that the value changes. Also check that the value is within its permitted range. Use a thermometer.
Is the value OK?
Yes - VERIFIED
No - VERIFICATION FAILED
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VERIFIED - Fault Found
VERIFICATION FAILED - Fault-tracing information
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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 - FAULT-TRACING FAILED
No - Attempt New Test
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FAULT-TRACING FAILED - No Fault Found
Attempt New Test - Checking passenger compartment temperature sensor
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Fault-tracing information
The fault has probably occurred as a result of a damaged power circuit in the climate control system. If the fault is intermittent, it has been registered previously but is no longer present. Intermittent faults may be caused by interference at start up of the control module. Intermittent faults may also be caused by other types of intermittent faults. The fault is evaluated depending on how it occurs. If the fault recurs, replace the control module.
Continue - Information
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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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FAULT FOUND - DONE
Attempt New Test - Checking passenger compartment temperature sensor
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Checking LIN bus
Identification
Hint: After replacing the climate control module (CCM), the LIN bus must be checked to identify which damper motors are installed and to identify their function and positions.
- Ignition off
- Reinstall the connectors, components etc.
- Ignition on.
Click the VCT2000 symbol to activate the check.
Continue - DONE
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DONE - Verification
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