Heated Rear Window (HRW)

HEATED REAR WINDOW (HRW)

DESCRIPTION

General
The HRW comprises eleven metallic strips bonded to the inside surface of the tail door glass to form an element. The metallic strips terminate in two larger strips at the bottom of the glass. Two connectors bonded to the terminations provide attachment of the supply and earth connections.

The HRW is controlled by the Central Control Unit (CCU) via a non latching switch mounted on the center console. The switch has an illumination LED to show when the HRW is operational. The switch is also illuminated by a separate bulb when the side or headlamps are switched on.

The CCU will only operate the HRW when all of the following conditions are met:
^ The HRW switch is pressed.
^ The engine is running.
^ The tail door window is closed.
^ The roof is fitted (3 door models only).

NOTE: The HRW will not operate if the tail door window has not been calibrated.

The CCU will switch the HRW off automatically after approximately 15 minutes.

OPERATION

General
Feed from the positive battery terminal (C0192) is supplied to fusible link 3 and fusible link 4 of the engine compartment fuse box (C0632) on an R wire. Fusible link 4 (C0574) provides a constant battery feed to the HRW relay and fuse 14 of the passenger compartment fuse box (C0587) on an NW wire.

NOTE: Only 3 door vehicles utilise fuse 14 for HRW operation.

The earth path for the HRW coil is controlled by the CCU (C0592), which is connected directly into the rear of the passenger compartment fuse box. The CCU will only provide an earth path for the relay coil if the ignition is switched on, and the engine is running.