Test D: The Heated Exterior Mirror Is Inoperative

PINPOINT TEST D: THE HEATED EXTERIOR MIRROR IS INOPERATIVE

D1-D2:

D2-D3:

Normal Operation
When the rear window defrost is ON the exterior mirrors receive voltage from the heated grid relay through circuits 15S-HB2 (GN/BU) and 15S-HB35 (GN/BK) on the LH mirror, and circuits 15S-HB2 (GN/BU) and 15S-HB36 (GN/OG) on the RH mirror. The LH mirror is grounded through circuit 31-HB35 (BK) and the RH mirror is grounded through circuit 31-HB36 (BK).

Possible Causes
- fuse
- circuit 15S-HB2 (GN/BU) open
- circuit 15S-HB35 (GN/BK) open
- circuit 15S-HB36 (GN/OG) open
- circuit 31-HB35 (BK) open
- circuit 31-HB36 (BK) open
- exterior mirror glass