Faulty Signal
Faulty signal
Erasing diagnostic trouble codes (DTCs)
- Ignition on
- Erase DTCs.
Continue - Reading off diagnostic trouble codes (DTCs).
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Reading off diagnostic trouble codes (DTCs).
- Remove key from ignition switch.
- Ensure that all doors, the hood and trunk lid are shut.
- Lock the car with the remote control.
- Wait approximately 10 seconds.
- Unlock the car with the remote control.
- Ignition on.
- Read off diagnostic trouble codes (DTCs).
Does diagnostic trouble code (DTC) GLA-451 recur?
Yes - Checking connectors
No - Intermittent fault
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Checking connectors
- Ignition off.
- Expose VGLA control module according to Replacing main control module Replacing Main Control Module.
- Expose movement sensor according to Replacing movement sensor Service and Repair.
Check movement sensor and VGLA control module connectors for contact resistance and oxidation according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
- Ignition on.
- Erase DTCs.
Continue - Reading off diagnostic trouble codes (DTCs).
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Reading off diagnostic trouble codes (DTCs)
- Remove key from ignition switch.
- Ensure that all doors, the hood and trunk lid are shut.
- Lock the car with the remote control.
- Wait approximately 10 seconds.
- Unlock the car with the remote control.
- Ignition on.
- Read off diagnostic trouble codes (DTCs).
Does diagnostic trouble code (DTC) GLA-541 recur?
Yes - Checking cables
No - FAULT FOUND
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Checking cables
- Ignition off.
Check cable between control module #A25 and movement sensor #2 for a short-circuit to ground according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault , short-circuit to supply voltage according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault and for an open-circuit according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault. Check cable between control module #B17 and movement sensor #3 for a short-circuit to ground according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault , short-circuit to supply voltage according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault and for an open-circuit according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault. Check cable between movement sensor #5 and ground for an open-circuit according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Remedy as necessary.
Were any faults found in the cables?
Yes - Erasing diagnostic trouble codes (DTCs)
No - Replacing component
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Replacing component
Try a new movement sensor according to Replacing movement sensor Service and Repair.
Continue - Erasing diagnostic trouble codes (DTCs)
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Erasing diagnostic trouble codes (DTCs)
- Ignition on.
Erase DTCs.
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.
- Remove the key.
- Ensure that all doors, the hood and trunk lid are shut.
- Lock the car with the remote control.
- Wait approximately 10 seconds.
- Unlock the car with the remote control.
- Ignition on.
- Read off diagnostic trouble codes (DTCs).
Does diagnostic trouble code (DTC) GLA-541 recur?
Yes - Fault-tracing information
No - 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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Intermittent fault
Check cable between control module #A25 and movement sensor connector #2 for an intermittent short-circuit to ground according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault , an intermittent short-circuit to supply voltage according to Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults and an intermittent open-circuit according to Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults. Check cable between fuse 15 and ultrasonic sensor connector #6 for an intermittent open-circuit according to Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults. Check cable between ultrasonic sensor #7 and ground for an intermittent open-circuit 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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