Chevrolet Equinox manuals

Chevrolet Equinox Service Manual: Electrical Power Management Description and Operation Starting System

Chevrolet Equinox Service Manual / Powertrain / Engine / Electrical Power Management Description and Operation Starting System

Electrical Power Management

The electrical power management is used to monitor and control the charging systemand alert the driver of possible problems within the charging system. The electricalpower management system makes the most efficient use of the generator output, improvesthe battery state-of-charge, extends battery life, and manages system electrical loads.

The load shed operation is a means of reducing electrical loads during a low voltageor low battery state-of-charge condition.

The idle boost operation is a means of improving generator performance during a lowvoltage or low battery state-of-charge condition.

Each electrical power management function, either idle boost or load shed, is discrete.No two functions are active at the same time. Idle boost is activated in incrementalsteps, idle boost 1 must be active before idle boost 2 can be active. The criteriaused by the body control module (BCM) to regulate electrical power management areoutlined below:

Electrical Power Management Block Diagram

K9Body Control ModuleK20Engine Control ModuleG13GeneratorSerial Data - GMLAN High Speed

Hard-Wired

K9-Body Control Module

K20-Engine Control Module

G13-Generator

Function

Battery Temperature Calculation

Battery Voltage Calculation

Amp-Hour Calculation

Action Taken

Idle Boost 1 Start

Less Than −15°C (5°F)

Less Than 13 V

First level Idle boost requested

Idle Boost 1 Start

Battery has a net loss greater than 0.6 Ah

First level Idle boost requested

Idle Boost 1 Start

Less Than 10.9 V

First level Idle boost requested

Idle Boost 1 End

Greater Than −15°C (5°F)

Greater Than −12 V

Battery has a net loss less than 0.2 Ah

First level Idle boost request cancelled

Load Shed 1 Start

Battery has a net loss of 4 Ah

Rear Defrost, Heated Mirrors, Heated Seats cycled OFF for 20% of their cycle

Load Shed 1 Start

Less Than 10.9 V

Rear Defrost, Heated Mirrors, Heated Seats cycled OFF for 20% of their cycle

Load Shed 1 End

Greater Than 12 V

Battery has a net loss of less than 2 Ah

Clear Load Shed 1

Idle Boost 2 Start

Battery has a net loss greater than 1.6 Ah

Second level Idle boost requested

Idle Boost 2 Start

Less Than 10.9 V

Second level Idle boost requested

Idle Boost 2 End

Greater Than 12 V

Battery has a net loss less than 0.8 Ah

Second level Idle boost request cancelled

Idle Boost 3 Start

Battery has a net loss of 10 Ah

Third level Idle boost requested

Idle Boost 3 Start

Less Than 10.9 V

Third level Idle boost requested

Idle Boost 3 End

Greater Than 12 V

Battery has a net loss of less than 6.0 Ah

Third level Idle boost request cancelled

Load Shed 2 Start

Less Than 10 V

Battery has a net loss greater than 12 Ah

Rear Defrost, Heated Mirrors, Heated Seats cycled OFF for 50% of their cycle. TheBATTERY SAVER ACTIVE message will be displayed on the DIC

Load Shed 2 Start

Less Than 10.9 V

Rear Defrost, Heated Mirrors, Heated Seats cycled OFF for 50% of their cycle. TheBATTERY SAVER ACTIVE message will be displayed on the DIC

Load Shed 2 End

Greater Than 12.6 V

Battery has a net loss of less than 10.5 Ah

Clear Load Shed 2

Load Shed 3 Start

Less Than 11.9 V

Battery has a net loss greater than 20 Ah

Rear Defrost, Heated Mirrors, Heated Seats cycled OFF for 100% of their cycle. TheBATTERY SAVER ACTIVE message will be displayed on the DIC

Load Shed 3 End

Greater Than 12.6 V

Battery has a net loss of less than 15 Ah

Clear Load Shed 3

Charging System Description and Operation Starting System
Electrical Power Management OverviewThe electrical power management system is designed to monitor and control the chargingsystem and send diagnostic messages to alert the driver of possible problems w ...

Engine Coolant Air Bleed Pipe Replacement (LFX) Engine Cooling
Engine Coolant Air Bleed Pipe ReplacementCalloutComponent NamePreliminary ProcedureRemove the intake manifold cover. Refer toIntake Manifold Cover Replacement.1Engine Coolant Air Bleed Pipe Fastener ( ...

Other materials:

Windshield Washer Nozzle Hose Replacement (Terrain) Washer Fluid System Washer Nozzles
Windshield Washer Nozzle Hose ReplacementCalloutComponent NamePreliminary ProcedureRemove the air inlet screen. Refer toAir Inlet Screen Replacement.1Windshield Washer Nozzle Hose AssemblyProcedureDetach both hose connections from the windshield washernozzles.Detach the washer nozzle hose from the i ...

© 2017-2019 Copyright www.cequinox.com