Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSFORD2007EDGE FWD V6-3.5LREPAIR AND DIAGNOSISWINDOWS AND GLASSWINDOWSTESTING AND INSPECTIONPINPOINT TESTSTEST J: THE DEFROST SYSTEM IS INOPERATIVE
2007 Ford Edge FWD V6-3.5L
Test J: the Defrost System Is Inoperative
2007 Ford Edge FWD V6-3.5LSECTION Test J: the Defrost System Is Inoperative
PINPOINT TEST J: THE DEFROST SYSTEM IS INOPERATIVE
Normal Operation
The heated rear window relay, which is integral to the battery junction box (BJB), receives power from circuit CBP45 (YE). When the heated rear window switch is pressed on the electronic automatic temperature control (EATC) or electronic manual temperature control module (EMTC) control unit, the EATC or EMTC grounds circuit CH122 (WH/OG) to activate the heated rear window relay. When the heated rear window relay is activated, power is sent from the heated rear window relay to the heated rear window grid through circuit CRD06 (BN/YE). The heated rear window grid is grounded through circuit GD149 (BK/GY).
Possible Causes
- Fuse(s)
- Open in circuit CBP45 (YE), CH122 (WH/OG), CRD06 (BN/YE) or GD149 (BK/GY)
- Heated rear window relay
- Inoperative EATC or EMTC
J1:
J2-J3:
J3-J4:
J5-J6:
J6-J8:
J8 Continued:
Normal Operation
The heated rear window relay, which is integral to the battery junction box (BJB), receives power from circuit CBP45 (YE). When the heated rear window switch is pressed on the electronic automatic temperature control (EATC) or electronic manual temperature control module (EMTC) control unit, the EATC or EMTC grounds circuit CH122 (WH/OG) to activate the heated rear window relay. When the heated rear window relay is activated, power is sent from the heated rear window relay to the heated rear window grid through circuit CRD06 (BN/YE). The heated rear window grid is grounded through circuit GD149 (BK/GY).
Possible Causes
- Fuse(s)
- Open in circuit CBP45 (YE), CH122 (WH/OG), CRD06 (BN/YE) or GD149 (BK/GY)
- Heated rear window relay
- Inoperative EATC or EMTC
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.