Signal Too Low
Signal too low
Checking the DSA switch
- Control module connected.
- Start the engine
- Read off the status of the switch.
Check the function of the switch: OFF should be displayed when the switch is unaffected. ON should be displayed when the switch is activated (pressed in).
Is the function of the switch OK?
Yes - Signal too low. Intermittent fault
No - Checking the signal cable
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Checking the signal cable
- Control module connected.
- Start the engine
- Read off the status of the switch
- Carefully remove the climate control module according to Comfort module Removal and Replacement
- Disconnect the climate control module connectors.
Check whether the ON or OFF status is displayed.
Is the OFF status displayed?
Yes - Replacing the component
No - Checking for a short-circuit
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Replacing the component
Try a new climate control module according to Comfort module Removal and Replacement.
Continue - Verification
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Checking for a short-circuit
Check the cable between climate control module terminal #A11 DSA control module terminal #6. Check for a short-circuit to ground according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Continue - Verification
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Verification
Verification
Hint: After carrying out the repair, check that the fault has been remedied.
- Ignition off.
- Reconnect the connectors, reinstall components etc.
- Control module connected.
- Start the engine.
- Read off the status of the switch.
Check the function of the switch: OFF should be displayed when the switch is unaffected. On should be displayed when the switch is activated (pressed in).
Is the function of the switch 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 - Exit fault-tracing
No - Attempt New Test
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Attempt New Test - Checking the DSA switch
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Signal too low. Intermittent fault
Signal too low. Intermittent fault
Checking wiring and terminals
Check that the DSA switch button does not catch or stick in the depressed position. Remedy as necessary.
Check the cable between climate control module terminal #A11 DSA control module terminal #6. Check for an intermittent short-circuit to ground according to Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults.
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 DSA switch
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