Signal Too Low

Signal too low

Checking signal from control switch.
- Go into rolling values.




- Read control switch status.
The value should be HIGH.

Is the value HIGH?

Yes - Intermittent fault

No - Checking control switch

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Checking control switch








- Ignition off.




- Disconnect the interior control switch for opening the trunk lid according to Door panel switch, replacement Removal and Replacement.
- Disconnect the control switch.
- Go into rolling values.
- Read control switch status.

Is the value HIGH?

Yes - Replacing component

No - Checking cables

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Replacing component
- Control switch removed.
Try a new control switch according to Door panel switch, replacement Removal and Replacement.

Continue - Verification

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Checking cables




Check the cable between control module #A4 and controls switch #1 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





Hint: After carrying out the repair, check that the fault has been remedied as follows:




- Ignition off.
- Reinstall connectors, components etc.
- Go into rolling values.
- Read control switch status.
The value should be HIGH.

Is the value HIGH?

Yes - FAULT FOUND

No - Fault-tracing information

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Fault-tracing information
Verification indicates that the fault persists.

Do you want to repeat fault-tracing?

Yes - Checking signal from control switch

No - No Fault Found

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Intermittent fault
Check cable between control module #A4 and control switch #1 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
If the fault is intermittent, do not verify fault-tracing if the fault does not recur.

Do you want to repeat fault-tracing?

Yes - Checking signal from control switch

No - No Fault Found

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