Sable V6-183 3.0L DOHC VIN S MFI (1997)
Power Protection Relay: Description and Operation
The battery saver relay is controlled by the Generic Electronic Module (GEM) and is located in the fuse junction panel.
Note: See Lighting and Horns section, Battery Discharge Protection Relay
The battery saver relay is designed to supply B+ voltage to:
-
Dome and map lamp switches.
-
Visor lamps.
-
Glove compartment lamp switch.
-
Cargo lamp switch.
-
Interior lamp switch on headlamp switch.
-
Interior courtesy lamp relay.
-
Delayed accessory relay.
The battery saver relay prevents excessive battery drain by interior lighting circuits. The battery saver relay operates as follows:
-
The GEM supplies a ground signal to the battery saver relay anytime one of the wake up inputs of the GEM is activated.
A wake-up command is sent when:
-
Any door becomes ajar or is opened or closed.
-
The ignition key is inserted or removed in the ignition switch.
-
The ignition switch is turned from OFF to RUN.
-
The ignition switch is turned from OFF to ACC.
-
A wake-up request is received from the remote anti-theft personality module.
-
The driver or passenger door lock cylinder is turned to unlock.
The GEM will maintain the ground input with ignition in RUN or for 40 minutes from the last input activation with ignition switch in the OFF position.
After 40 minutes the ground signal is discontinued.
This de-energizes the battery saver relay, preventing B+ voltage supply to the controlled switches and circuits.
