Circuit/System Verification
- Ignition ON/Vehicle in Service Mode.
- Verify DTC U2409 is not set.
- If DTC U2409 is set
Refer to Scan Tool Does Not Communicate with High Speed GMLAN Device .
- If DTC U2409 is not set
- If DTC U2409 is set
- All OK
Refer to Scan Tool Does Not Communicate with High Speed GMLAN Device .