《GMW-8765-2006.pdf》由会员分享，可在线阅读，更多相关《GMW-8765-2006.pdf（13页珍藏版）》请在三一文库上搜索。
1、 WORLDWIDE ENGINEERING STANDARDS General Specification Electrical/Electronic PPEI 3.7 GMW8765 Platform to Powertrain Electrical Interface (PPEI) Specification Displays and Gauges Subsystem Copyright 2006 General Motors Corporation All Rights Reserved March 2006 Originating Department: North American
2、 Engineering Standards Page 1 of 13 1 Introduction This standard defines the Displays and Gauges electrical interface between Platform and Powertrain. 1.1 Applicability. The GMW8762 PPEI (Platform to Powertrain Electrical Interface) Standard Specification includes: General Information, On-Board Diag
3、nostics and Electrical Requirements and GMLAN Serial Data Signal Definitions and Framing for the following nineteen PPEI subsystems standard specifications: 1. GMW8763 Power and Ground 2. GMW8764 Four Wheel Drive/All Wheel Drive Controls 3. GMW8765 Displays and Gauges 4. GMW8766 Engine Power Managem
4、ent 5. GMW8767 Starter Control 6. GMW8768 Vehicle Theft Deterrent 7. GMW8769 Cruise Control 8. GMW8770 Cooling Fan Control 9. GMW8771 Air Conditioning Compressor Control 10. GMW8772 Serial Data Architecture 11. GMW8773 Brakes and Traction Control 12. GMW8774 Enhanced Evaporative Emissions and Fuel 1
5、3. GMW8775 Exhaust After-Treatment 14. GMW8776 Suspension Control 15. GMW8777 Transmission 16. GMW8778 Generator Control 17. GMW8779 Post Collision Operation 18. GMW8780 Power Take-Off and Fast Idle Control 19. GMW8781 Vehicle Speed and Rough Road Sensing Each of the nineteen PPEI subsystem standard
6、 specifications contains the hardware, serial data, algorithms and calibrations for the named subsystem. The master PPEI document and all nineteen PPEI subsystem standard specifications are required to define the complete set of PPEI requirements. 2 References Note: Only the latest approved standard
7、s are applicable unless otherwise specified. 2.1 External Standards/Specifications. None. 2.2 GM Standards/Specifications. GMW3001 GMW8772 GMW3059 GMW8773 GMW8762 GMW8774 GMW8763 GMW8775 GMW8764 GMW8776 GMW8766 GMW8777 GMW8767 GMW8778 GMW8768 GMW8779 GMW8769 GMW8780 GMW8770 GMW8781 GMW8771 2.3 Addit
8、ional References. TL 01.58.2041- R5 3 Subsystem Requirements 3.1 Functional Overview. The data supplied and the display or gauge functions performed are vehicle application dependent and the responsibility of Platform. With the exception of the hard-wired signals noted in the Hardware Overview secti
9、on below, all required data from Powertrain shall be transmitted to Platform via the serial data link. The Service Engine Soon Display or Malfunction Indicator Lamp (MIL) is a telltale illuminated for critical, emissions-related faults. The Service Engine Soon telltale shall be illuminated for a bul
10、b- check in accordance with legislated requirements. All ECMs shall support the output required to directly control this telltale. In addition, Powertrain GMW8765 GM WORLDWIDE ENGINEERING STANDARDS Copyright 2006 General Motors Corporation All Rights Reserved Page 2 of 13 March 2006 shall support re
11、questing the operation of this telltale via the serial data link. Powertrain shall determine filtered fuel level information for display purposes. Refer to GMW8774 Section 4 PPEI Fuel Volume and Determination for the algorithm description. Platform may do additional filtering of fuel level data rece
12、ived from Powertrain when used for display purposes. Powertrain shall always provide a low oil pressure indication. This indication may be based on either an oil pressure sensor or a low oil pressure switch. When an oil pressure display is required by Platform, Powertrain shall provide oil pressure
13、sensor information via serial data. 3.2 Hardware Overview. The hardware for the display or gauge functions will vary with application as one of the means to provide a specific vehicle character. Not all vehicles will use the same display or gauge information. Powertrain shall provide Platform a hard
14、wired Service Engine Soon (MIL) indication signal. Powertrains in OBD2 markets require an additional hard-wired signal to Platform for a glow plug telltale on diesel powertrain applications. A single coolant temperature sensor shall be used for both displays and Powertrain controls. This is an OBD r
15、equirement related to hot engine fuel enrichment. When required by Platform for an oil pressure display or gage function, Powertrain shall provide input processing for an engine oil pressure sensor. Powertrain shall always provide either an oil pressure sensor or a low oil pressure switch. When requ
16、ired by Platform for an oil temperature display or gage function, Powertrain shall provide input processing for an engine oil temperature sensor. All Platforms shall provide the following standard telltales or Driver Information Center messages: 1. Service Engine Soon (MIL) 2. Low Engine Oil Pressur
17、e 3. Generator Fault 4. Reduced Engine Power (this requirement may be met using a shared Service Vehicle Soon indicator) 5. Glow Plug (Diesel Powertrains Only) In addition, platforms required to meet OBD requirements must provide the following standard telltales or Driver Information Center messages
18、: 1. Engine Hot Coolant telltale or Coolant Gauge with red zone (required with fuel enrichment). Platform shall illuminate the Engine Hot Coolant telltale or drive the coolant gauge into the red zone when the serial data signal Engine Hot Fuel Enrichment Indication On = “True” (see section 4.2.2.1).
19、 Platform shall display via the DIC message (when available) “Engine Hot / Idle Engine“. 2. When the serial data signal Engine Hot / Stop Engine Indication On = “True“, Platform shall display via the DIC message (when available) “Engine Hot / Stop Engine“ (see section 4.2.2.2). In this condition, th
20、e Engine Hot Coolant telltale or Coolant Gauge with red zone shall still be controlled through the serial data signal Engine Hot Fuel Enrichment Indication On. Platform shall perform all required bulb checks for these standard indicators with the following exceptions: If a platform implements a MIL
21、or Glow Plug indicator via serial data then the Powertrain is responsible for the bulb check. If a platform controls the MIL or Glow Plug indicator via discrete outputs of the ECM, then the ECM is responsible for the bulb check(s). If hardwire controlled MIL is used on a platform it is recommended t
22、hat the MIL indicator be implemented in a way that minimizes or isolates the Platform electronics required for its operation. For serial data MIL control refer to additional requirements specified in GMW8762 Section 4 PPEI GMLAN Signal and Definitions and Framing for the GMLAN signal Engine Emission
23、s Related Malfunction Indication Request. It is recommended, but not required, that the platform provide some type of audible indication in coordination with the reduced engine power display described above. Some Powertrains require Platform to provide a “Stop Engine” indication when the engine temp
24、erature reaches a critical value. Powertrain considers the “Low Oil Pressure” and “Stop Engine” indications to be high priority due to potential engine damage. All Powertrains shall feature an engine oil life monitor. The reset method shall be based on a throttle pedal stomp maneuver detected by the
25、 powertrain controller. Some Platforms also may utilize an engine oil life reset switch. Platform shall provide input signal processing for this switch and transmit the reset command to Powertrain via the serial data link. The standard engine oil life monitor algorithm shall accommodate both reset m
26、ethods. -,-,- GM WORLDWIDE ENGINEERING STANDARDSGMW8765 Copyright 2006 General Motors Corporation All Rights Reserved March 2006 Page 3 of 13 All Powertrains shall provide a hardware interface capable of supporting a Platform optional PWM oil condition sensor. In addition, all Powertrains shall prov
27、ide a hardwire interface capable of supporting a discrete switch low oil level sensor. The use of these sensors on any given vehicle is mutually exclusive (i.e., a particular vehicle can not have both a PWM oil level sensor and a discrete low oil level sensor). Powertrain may use a single interface
28、to provide both functions. The use of either of these sensors is Platform optional, however both sensor and interface circuitry are released by Powertrain. 3.2.1 Block Diagram. The following block diagram (Figure 1) depicts a typical mechanization for Platform display and gauge functions. It only sh
29、ows Display interfaces not covered in other sections. The electrical interface between Powertrain and Platform is the only standard defined. Crank Position Sensor Engine Oil Life Reset Switch POWERTRAIN PLATFORM Powertrain Electronics Platform Electronics Serial Data Link Battery or Accessory or Run
30、/Crank Relay Output Service Engine Soon (MIL) Service Engine Soon Notes: 1. Platform shall source additional 20 uA parasitic current to Powertrain Electronics for each output (i.e., MIL or Glow Plug) with pull-up to battery. 2. All applications shall provide an interface capable of supporting either
31、 a Platform optional oil condition sensor or a Platform optional oil level sensor. Coolant Temperature Sensor Engine Oil Pressure Sensor/Switch Engine Oil Condition/Level Sensor Water in Fuel Sensor Glow Plug Glow Plug 1 Engine Oil Temp. Sensor Transmission Fluid Temp. Sensor Note 2 +5V 3.0 k -,-,-
32、GMW8765 GM WORLDWIDE ENGINEERING STANDARDS Copyright 2006 General Motors Corporation All Rights Reserved Page 4 of 13 March 2006 3.3 Interface Description. 3.3.1 Serial Data Link. Reference GMW8762 Section 4 PPEI GMLAN Serial Data Signal and Definitions and Framing for definitions of signals listed
33、below in Table 1. There are additional GMLAN signals used for vehicle displays, which are not listed in the Table 1 below. Other PPEI subsystem sections, which directly define a display, requirement will identify the GMLAN display signals associated with that subsystem. 3.3.2 Calibrations. Table 2 c
34、ontains calibrations that cross the Platform Powertrain Electrical Interface (i.e., are located in devices on one side of the interface but controlled by the other side of the interface or driven by variation in the other side of the interface). Refer to GMW8765 Section 4 for Calibration description
35、s. Table 1: Displays and Gauges Serial Data Signals Signal Name Transmitter Notes Air Conditioning Off Indication On Powertrain Required Apply Brake Before Cruise Indication On Powertrain Required Automatic Transmission Commanded Gear Powertrain Required Barometric Pressure Absolute Powertrain Requi
36、red Barometric Pressure Absolute Validity Powertrain Required Check Fuel Filler Cap Indication On Powertrain Required Cruise Control Active Powertrain Required Cruise Control Driver Selected Speed Powertrain Required Cruise Control Driver Selected Speed Active Powertrain Required Cruise Control Enab
37、led Powertrain Required Diesel Glow Plug Indication On Powertrain Required (With Diesel) Distance Rolling Count Average Driven Powertrain Required Distance Rolling Count Average Driven Reset Occurred Powertrain Required Distance Rolling Count Average Driven Source Powertrain Required Distance Rollin
38、g Count Average Driven Validity Powertrain Required Distance Rolling Count Average Non Driven Powertrain Required Distance Rolling Count Average Non Driven Reset Occurred Powertrain Required Distance Rolling Count Average Non Driven Validity Powertrain Required Elapsed Time Count Platform Required E
39、lapsed Time Count Reset Occurred Platform Required Driver Shift Control Request Denied Indication On Powertrain Required Driver Shift Control Target Gear Powertrain Required Engine Boost Pressure Indication Powertrain Required Engine Boost Pressure Indication Validity Powertrain Required Engine Coas
40、t Fuel Cutoff Active Powertrain Required Engine Coolant Temperature Powertrain Required Engine Coolant Temperature Validity Powertrain Required Engine Cylinder Deactivation Mode Powertrain Required Engine Diagnostic Trouble Code Present Indication On Powertrain Required Engine Emissions Related Malf
41、unction Indication RequestPowertrain Required Engine Emissions Related Malfunction Active Powertrain Required Engine Hot / Stop Engine Indication On Powertrain Required Engine Hot Fuel Enrichment Indication On Powertrain Required Engine Idle Active Powertrain Required Engine Non Emissions Related Ma
42、lfunction Active Powertrain Required Engine Oil Change Indication On Powertrain Required Engine Oil Level Low Indication On Powertrain Required -,-,- GM WORLDWIDE ENGINEERING STANDARDSGMW8765 Copyright 2006 General Motors Corporation All Rights Reserved March 2006 Page 5 of 13 Signal Name Transmitte
43、r Notes Engine Oil Life Reset Performed Powertrain Required Engine Oil Life Reset Request Platform Required Engine Oil Pressure Powertrain Required Engine Oil Pressure Low Indication On Powertrain Required Engine Oil Pressure Validity Powertrain Required Engine Oil Remaining Life Powertrain Required
44、 Engine Oil Starvation Indication On Powertrain Required Engine Oil Temperature Powertrain Required Engine Oil Temperature Validity Powertrain Required Engine Recommended Upshift Indication On Powertrain Required Engine Run Active Powertrain Required Engine Speed Powertrain Required Engine Speed Max
45、imum Limit Powertrain Required Engine Speed Limitation Mode Active Powertrain Required Engine Speed Status Powertrain Required Engine Water In Fuel Indication On Powertrain Required (With Diesel) Fuel Injected Rolling Count Powertrain Required Fuel Injected Rolling Count Reset Occurred Powertrain Re
46、quired Fuel Level Percent Powertrain Required Fuel Level Percent Validity Powertrain Required Fuel Total Capacity Powertrain Required Generator Failed Powertrain Required Instantaneous Fuel Consumption Rate Powertrain Required Interior Dimming Display Level Platform Required Overdrive Disable Reques
47、t Granted Powertrain Required Powertrain High Electrical Load Requested Powertrain Required (With Diesel) Powertrain Exhaust Particle Filter Warning Indication On Powertrain Required (With Diesel) Powertrain Immobilizer Information Powertrain Required Powertrain Top Speed Limit Reduced Powertrain Re
48、quired Reduced Power Indication On Powertrain Required Starting Disabled Indication On Powertrain Required Throttle Progression Status Powertrain Required Transfer Case Emissions Related Malfunction Active Powertrain Required Transfer Case Non Emissions Related Malfunction ActivePowertrain Required
49、Transfer Case Overheated Indication On Powertrain Required Transmission Range Inhibit Status Powertrain Required Transmission Change Oil Now Indication On Powertrain Required Transmission Creep Mode Active Powertrain Required with MTA Transmission Emissions Related Malfunction Active Powertrain Required Transmission Non Emissions Related Malfunction Active Powertrain Required Transmission Oil Life Reset Request Platform Required Trans