GG. Checking Hood Switch

GGA. Fault Tracing

Condition
No diagnostic trouble codes (DTCs) stored.

Possible Source
Open-circuit in signal cable from hood switch.
Open-circuit in hood switch ground lead.
Faulty hood switch.

Start fault-tracing with GGB.


GGB1. Checking Signal From Hood Switch





Ignition on.
Hood closed.
Go into scrolling values.
Read off the hood switch status.
The value should be LOW when the hood is closed.
Is the value LOW?
Yes: Fault not found
No: Go to GGB2.


GGB2. Checking Connectors

Check VGLA control module connector and hood switch connector for contact resistance and oxidation according to WWA5 WW. Checking Wiring and Connections
Ignition on.
Hood closed.
Go into scrolling values.
Read off the hood switch status.
The value should be LOW when the hood is closed.
If the value is OK the cause of the fault has been loose connections in the connectors.
Is the value LOW?
Yes: Fault corrected
No: Go to GGB3.


GGB3. Checking For An Open-Circuit





heck cable between VGLA control module #A3 and hood switch terminal 1 and cable between hood switch terminal 2 and ground for an open-circuit according to WWA2 WW. Checking Wiring and Connections
Were any faults found in the cables?
Yes: Go to GGB5.
No: Go to GGB4.


GGB4. Replacing Component

Replace hood switch according to service and repair procedures. Then continue with GGB5.


GGB5. Verification






Hint: After carrying out the repair check that the fault has been remedied.

Ignition off.
Reconnect connectors, reinstall components.
Ignition on.
Hood closed.
Go into scrolling values.
Read off the hood switch status.
The value should be LOW when the hood is closed.
Is the value LOW?
Yes: Fault corrected
No: Fault not found