Circuit/System Verification

Engine running.
Verify the E18 Rear Defogger Grid turns ON and OFF when commanding the Rear Defogger On and Off with a scan tool.
- If the E18 Rear Defogger Grid does not turn ON or OFF
  Refer to Rear Window Defogger Malfunction (With C68)Rear Window Defogger Malfunction (Without C68) .
- Go to next step: If the E18 Rear Defogger Grid turns ON and OFF
Verify the mirror glass of the A9A Outside Rearview Mirror - Driver and the A9B Outside Rearview Mirror - Passenger become warm when commanding the Rear Defogger On with a scan tool.
- If the mirror glass of the A9A Outside Rearview Mirror - Driver and the A9B Outside Rearview Mirror - Passenger do not become warm
  Refer to Circuit/System Testing.
- Go to next step: If the mirror glass of the A9A Outside Rearview Mirror - Driver and the A9B Outside Rearview Mirror - Passenger become warm
All OK.