GMW-8767-2006.pdf
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1、 WORLDWIDE ENGINEERING STANDARDS General Specification Electrical/Electronic PPEI 3.7 GMW8767 Platform to Powertrain Electrical Interface (PPEI) Specification Starter Control Subsystem Copyright 2006 General Motors Corporation All Rights Reserved March 2006 Originating Department: North American Eng
2、ineering Standards Page 1 of 32 1 Introduction 1.1 Applicability. The GMW8762 PPEI (Platform to Powertrain Electrical Interface) Standard Specification includes: General Information, On-Board Diagnostics and Electrical Requirements and GMLAN Serial Data Signal Definitions and Framing for the followi
3、ng 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 Management 5. GMW8767 Starter Control 6. GMW8768 Vehicle Theft Deterrent 7. GMW8769 Cruise Control 8. GMW8770 C
4、ooling 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 13. GMW8775 Exhaust After-Treatment 14. GMW8776 Suspension Control 15. GMW8777 Transmission Control 16. G
5、MW8778 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 specifications contains the hardware, serial data, algorithms and calibrations for the named su
6、bsystem. 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 standards are applicable unless otherwise specified. 2.1 External Standards/Specifications. None. 2.2 GM
7、 Standards/Specifications. GMW3001 GMW8772 GMW3059 GMW8773 GMW8762 GMW8774 GMW8763 GMW8775 GMW8764 GMW8776 GMW8765 GMW8777 GMW8766 GMW8778 GMW8768 GMW8779 GMW8769 GMW8780 GMW8770 GMW8781 GMW8771 2.3 Additional References. None. 3 Subsystem Requirements 3.1 Functional Overview. The ECM Controlled Sta
8、rt mechanization defined in this section shall be applicable to vehicles equipped with an ignition key switch or push button start (Easy Key). The mechanization supports Power Take Off (PTO) remote start on automatic and manual transmissions and the Remote Vehicle Start (RVS) feature on automatic tr
9、ansmission vehicles only. Starter Control requirements are captured in the PPEI Starter Control algorithm description in Section 4.1. For information about Easy Key, refer to the Easy Key Subsystem Technical Specification. For information about RVS, refer to the RVS Subsystem Technical Specification
10、. For information about PTO Remote Engine Start, refer GMW8767 GM WORLDWIDE ENGINEERING STANDARDS Copyright 2006 General Motors Corporation All Rights Reserved Page 2 of 32 March 2006 to the Power Take Off Remote Engine Start Subsystem Technical Specification. The ECM Controlled Start mechanization
11、utilizes a serial data based power mode signal for a driver- initiated crank request. The ECM shall only initiate engine cranking when the value of this signal is CRANK_REQUEST, after previously receiving an indication that the vehicle is in Park/Neutral or that the clutch is determined to be depres
12、sed. Clutch status is only used in vehicles with a calibration requiring clutch depression for crank initiation. Upon loss of serial data from the Power Mode Master and the Backup Power Mode Master, the ECM shall use its discrete Run/Crank Relay Output (an input to the ECM) and Accessory Input signa
13、ls for power moding. In this case, the ECM is unable to receive the CRANK REQUEST power mode signal and shall not use its discrete inputs to initiate engine cranking. The only exception to this criterion is as follows: EXCEPTION: The ECM can initiate engine cranking based on its discrete input signa
14、ls ONLY when the ECM is in “Post Release Stall” mode operation. The Post Release Stall mode operation requires the following: the ECM has passed Vehicle Theft during the current ignition cycle, the engine has stopped rotating and there is a loss of System Power Mode and System Backup Power Mode sign
15、als over serial data. Only the Ignition Mode Switch can generate the Backup System Power Mode = “Crank Request” on the High Speed GMLAN bus. The conventional Ignition Switch system will not provide System Backup Power Mode signals to the high speed bus since the Backup Power Mode Master is only enab
16、led upon the loss of low speed communication with the gateway module. The ECM shall disable engine cranking based on its discrete Run/Crank Relay Output and Accessory input signals, or when the value of the power mode signal is not equal to CRANK REQUEST. The Power Mode Master will never issue the C
17、rank Request power mode signal when in the Off, Accessory/Wake Up, or Run ignition switch positions during any single point failure of the ignition key switch or Easy Key wires. 3.2 Hardware Overview. The Accessory/Wake Up and Run/Crank signals are required for starter control and shall be used for
18、detecting wake-up. On manual transmissions, Clutch Start information (when required) is communicated to the Powertrain electronics from the Platform. This information is provided by a discrete switch or a sensor. On automatic transmissions, powertrain shall determine park or neutral gear selection w
19、ith a discrete switch to the ECM. Vehicle theft password and status, and system power mode are communicated using the serial data link. The starter solenoid is energized from the battery via the starter control relay. The starter control relay is controlled by the Starter Control output of the power
20、train electronics. -,-,- GM WORLDWIDE ENGINEERING STANDARDSGMW8767 Copyright 2006 General Motors Corporation All Rights Reserved March 2006 Page 3 of 32 3.2.1 Block Diagram. The following block diagram (Figure 1) depicts the standard mechanization for ECM Controlled Start. Figure 1: Starter Control
21、Subsystem Block Diagram POWERTRAIN PLATFORM Note: 1. Clutch Start Switch is required for North American and optional for European manual transmissions only. Alternatively, a Clutch Pedal Position (CPP) Sensor may provide this information, Reference GMW8777 Transmission Control for more detail on the
22、 CPP Sensor requirements. Engine Block Ground BATTERY + - Starter Battery Feed (Unfused Power Line) Starter Motor Starter Solenoid PLATFORM ELECTRONICS Serial Data Link Internal Mode Switches 4 Lines PRNDL Clutch Start Switch (Platform Released) or Neutral Start Switch (Powertrain Released) 1 N/O Cl
23、utch Start/Neutral Start Power Mode Master Run/Crank Relay Output Accessory/Wakeup ECM TCM PTO Remote Engine Shutdown CPP Sensor 1k 3k 5Vref Clutch Pedal Position Sensor Sensor Return Switched Battery Starter Control Starter Solenoid Battery Starter Control Relay N/O -,-,- GMW8767 GM WORLDWIDE ENGIN
24、EERING STANDARDS Copyright 2006 General Motors Corporation All Rights Reserved Page 4 of 32 March 2006 3.2.2 Power and Ground Requirements. The cranking circuit power and ground requirements shall be mutually resolved between Platform and Powertrain for each application. For GMNA applications, refer
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