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.
[1][2]Hood closed.
Go into scrolling values.
Read off the hood switch status.
The value should be LOW when the [1][2]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.
[1][2]Hood closed.
Go into scrolling values.
Read off the hood switch status.
The value should be LOW when the [1][2]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.
[1][2]Hood closed.
Go into scrolling values.
Read off the hood switch status.
The value should be LOW when the [1][2]hood is closed.
Is the value LOW?
Yes: Fault corrected
No: Fault not found