Test K: The Defrost System Will Not Shut Off Automatically

PINPOINT TEST K: THE DEFROST SYSTEM WILL NOT SHUT OFF AUTOMATICALLY

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, the HVAC module 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).

This pinpoint test is intended to diagnose the following:
- Wiring, terminals or connectors
- Heated rear window relay
- HVAC module

K1:

K2-K3:

K3-K4: