engine-cooling.pdf
| 2005 Chevrolet Equinox LS |
|---|
| 2005 ENGINE Engine Cooling - Equinox |
Table Caption: This table provides a heading for the 2005 Chevrolet Equinox LS and then specifies that the following information relates to the engine cooling system for that specific vehicle model.
2005 ENGINE
Engine Cooling - Equinox
SPECIFICATIONS
FASTENER TIGHTENING SPECIFICATIONS
Fastener Tightening Specifications
| Specification | Specification | |
|---|---|---|
| Application | Metric | English |
| Coolant Heater | 50 N.m | 37 lb ft |
| Heater Inlet Pipe Nut | 25 N.m | 18 lb ft |
| Heater Outlet Pipe to Throttle Body Bolt | 10 N.m | 89 lb in |
| Heater Outlet Pipe to Throttle Body Nut | 10 N.m | 89 lb in |
| Heater Outlet Pipe to Upper Intake Manifold Nut | 25 N.m | 18 lb ft |
| Manifold Absolute Pressure (MAP) Sensor Bracket Bolt | 10 N.m | 89 lb in |
| Thermal Bypass Fitting Bolt | 12 N.m | 106 lb in |
| Thermal Bypass Pipe Bolt | 10 N.m | 89 lb in |
| Thermostat Housing Bolt | 25 N.m | 18 lb ft |
| Water Pump Bolt | 10 N.m | 89 lb in |
| Water Pump Pulley Bolt | 25 N.m | 18 lb ft |
Table Caption: This table lists the torque specifications in both metric (N.m) and English (lb ft or lb in) units for various components related to the cooling system, including the coolant heater, heater pipes, thermostat housing, and water pump.
SCHEMATIC AND ROUTING DIAGRAMS
ENGINE COOLING SCHEMATICS
2005 Chevrolet Equinox LS
2005 ENGINE Engine Cooling - Equinox
Courtesy of GENERAL MOTORS CORP.
COMPONENT LOCATOR
COOLING SYSTEM COMPONENT VIEWS
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2005 Chevrolet Equinox LS
2005 ENGINE Engine Cooling - Equinox
Courtesy of GENERAL MOTORS CORP.
Callouts For Fig. 2
| Callout | Component Name |
|---|---|
| 1 | Cooling Fan - Left |
| 2 | Cooling Fan - Right |
| 3 | Cooling Fan S/P Relay |
| 4 | Forward Lamp Harness |
Table Caption: This table lists four components identified by callout numbers: the left and right cooling fans, a cooling fan S/P relay, and the forward lamp harness.
COOLING SYSTEM CONNECTOR END VIEWS
Cooling Fan - Left Connector End View
2005 Chevrolet Equinox LS
2005 ENGINE Engine Cooling - Equinox
- OEM: F8ZB-14A464-DA
Connector Part Information
- Service: See Catalog
- 3-Way F (TN)
| Pin | Wire Color | Circuit No. | Function |
|---|---|---|---|
| 1 | L-BU | 409 | Cooling Fan Motor Supply Voltage (1) |
| 2 | - | - | Not Used |
| 3 | WH | 504 | Cooling Fan Motor Low Reference |
Table Caption: This table details the pin assignments, wire colors, circuit numbers, and functions for three specific pins related to a cooling fan motor. It outlines the power supply and a low reference for the cooling fan motor, noting that pin 2 is not used.
Cooling Fan - Right Connector End View
- OEM: F8ZB-14A464-DA
Connector Part Information
Pin
Wire Color
- Service: See Catalog
- 3-Way F (TN)
Circuit No.
Function
| 2005 Chevrolet Equinox LS |
|---|
| 2005 ENGINE Engine Cooling - Equinox |
Table Caption: This table details information about the engine cooling system for a 2005 Chevrolet Equinox LS. It likely includes specifications, components, and maintenance procedures related to the vehicle's cooling system.
| 1 | GY | 532 | Cooling Fan Motor Supply Voltage (2) |
|---|---|---|---|
| 2 | - | - | Not Used |
| 3 | BK | 150 | Ground |
Table Caption: This table lists electrical connection points, identifying their color code, wire number, and descriptive label.
Cooling Fan S/P Relay Connector End View
- OEM: 12110539
Connector Part Information
- Service: 15306045
- 5-Way F Metri-Pack 280 Series, Flexlock (BK)
| Pin | Wire Color | Circuit No. | Function |
|---|---|---|---|
| 30 | WH | 504 | Cooling Fan Motor Low Reference |
| 85 | RD/WH | 4040 | Battery Positive Voltage |
| 86 | D-BU | 473 | High Speed Cooling Fan Relay Control |
| 87 | BK | 150 | Ground |
| 87A | GY | 532 | Cooling Fan Motor Supply Voltage (2) |
Table Caption: This table details the wiring, circuit numbers, and functions for pins on a cooling fan relay, including low speed reference, battery positive, high speed control, ground, and motor supply voltage.
DIAGNOSTIC INFORMATION AND PROCEDURES
DIAGNOSTIC STARTING POINT - ENGINE COOLING
Begin the system diagnosis with the diagnostic system check. Refer to Diagnostic System Check - Vehicle in Vehicle DTC Information. The Diagnostic System Check - Vehicle will provide the following information:
- The identification of the control modules which command the system
- The ability of the control modules to communicate through the serial data circuits
- The identification of any stored DTCs and their status
The use of the Diagnostic System Check - Vehicle will identify the correct procedure for diagnosing the system
2005 Chevrolet Equinox LS
2005 ENGINE Engine Cooling - Equinox
SCAN TOOL OUTPUT CONTROLS
Powertrain Control Scan Tool Output Controls (LNJ/3.4L)
| Scan Tool Output Control | Additional Menu Selection(s) | Description |
|---|---|---|
| Fans Low Speed | Engine Outputs | The scan tool displays a commanded state of On or Off. This allows you to communicate with the PCM and activate or deactivate the cooling fan relay, manually turning the fan On and Off. |
| Fans High Speed | Engine Outputs | The scan tool displays a commanded state of On or Off. This allows you to communicate with the PCM and activate or deactivate the cooling fan relays, manually turning the fans On and Off. |
Table Caption: This table details scan tool output controls for cooling fan speed, allowing manual activation or deactivation of fan relays through the Engine Outputs menu.
SCAN TOOL DATA LIST
Use the Scan Tool Data Display Values and Definitions Information in order to assist in diagnosing the HVAC Control Module problems. Compare the vehicles actual scan tool data with the typical data display value table information. Use the data information in order to aid in understanding the nature of the problem when the vehicle does not match with the typical data display values.
The scan tool data values were taken from a known good vehicle under the following conditions:
- The ignition switch is in the ON position.
- The engine is running at idle.
- The vehicle is in PARK.
- The doors are closed.
- The windows are closed.
- The A/C is ON.
- The ambient air temperatures are at 22-27°C (70-80°F).
Body Control Module (BCM) Scan Tool Data List
**Table Caption: This table outlines scan tool parameters for diagnosing vehicle systems, including
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