Test E: The Heated Exterior Mirror Is Inoperative
PINPOINT TEST E: THE HEATED EXTERIOR MIRROR IS INOPERATIVENormal Operation
When the heated rear window switch is pressed, the HVAC electronic automatic temperature control (EATC) or the HVAC electronic manual temperature control (EMTC) grounds circuit CH122 (WH/OG) and the heated rear window relay closes. When the heated rear window relay is closed, power is supplied to circuit CRD06 (BN/YE) to battery junction box (BJB) fuse 49 (15A). The heated exterior mirrors receive power from circuit CBB49 (VT/GY), through BJB fuse 49 (15A). Ground is supplied to the LH heated exterior mirror through circuit GD133 (BK) and to the RH heated exterior mirror through circuit GD148 (BK/YE).
This pinpoint test is intended to diagnose the following:
- Fuse
- Wiring, terminals or connectors
- Exterior mirror glass
- Exterior mirror