1、GM DAEWOO Auto & Technology EDS Engineering, GM DAEWOO Auto & Technology Standards ELECTRONIC TRANSMISSION CONTROL Do Not Use on New Programs. Being Replaced by GMW8777 EDS-T-5238 ISSUED DATE: 1995. 03. 14 REVISED DATE: 2009. 01. 09 VERSION: 3 (Superceded) EDS-T-5238ELECTRONIC TRANSMISSION CONTROL P
2、AGE: 1/35 ISSUED DATE: 1995. 03. 14 REVISED DATE: 2009. 01. 09 VERSION: 3 GM DAEWOO Auto & Technology Note: This standard may be applied only for current project (incl. T255 Program). It is Superceded for all future projects and replaced by GMW8777. PART 1. GENERAL REQUIREMENTS 1. PURPOSE This test
3、specification determines the requirements, test conditions and test method for the electric and physical function - and fatigue tests of electronic transmission controls used in the vehicle for automatic transmission. Basically, the technical delivery conditions EDS-T-5235 “electronic components in
4、the motor vehicle, general requirements“ are valid for the control units. In part 1 of these technical delivery conditions, the general requirements, which must fulfill electronic transmission controls, are determined. Further requirements for the electronic transmission controls of different types
5、of transmission and their components are determined in the following stated additional parts to these technical delivery conditions. 1.1. Part 1 a : Selector lever position switch 1.2. Part 1 b : Solenoid valve 1.3. Part 2 : Control for the 4 - speed - automatic transmission AW03 - 71 LE 1.4. Part 3
6、 : Control for the 4 - speed - automatic transmission AF 14/20 1.5. Part 4 : Control for the 4 - speed - automatic transmission AR 25/35 2. REMARK Samples of material released to this specification shall be tested according to this spec. and approved by GMDAT TECHNICAL CENTER prior to the commenceme
7、nt of this bulk supplies. In the event of any intentional deviation from the requirement of this spec., it is the sole responsibility of the supplier to submit the purchaser unsolicited the samples for reapproval by GMDAT TECHNICAL CENTER prior to the commencement of delivery of deviant bulk supplie
8、s. Before the start of performance of routine tests and drive tests for the purpose of release, the manufacturer of control unit must propose a detailed operating description. 3. TEST SAMPLE AND TEST QUANTITY If nothing else is specified, 6 piece electronic transmission controls are to be delivered
9、with a works test certificate to DIN 50049 - 23 for the first sampling and release test to this spec. It is expected that the characteristic quantities represent the tolerance range of production scattering width at the demanded test samples. If this supposition is not fulfilled by the test samples,
10、 the tolerance ranges of production scattering width must be specified in the works test certificate, apart from the single values, for all required details. EDS-T-5238ELECTRONIC TRANSMISSION CONTROL PAGE: 2/35 ISSUED DATE: 1995. 03. 14 REVISED DATE: 2009. 01. 09 VERSION: 3 GM DAEWOO Auto & Technolo
11、gy 4. PRETREATMENT If nothing else is specified at the individual tests, the tests are performed at +23 5K in the delivery condition without pretreatment. 5. TEST PROGRESS The tests are to be performed corresponding to the test plans in this test specification. The specified sequence is to be observ
12、ed at the tests, because it is not secured that comparable results are obtained. 6. TEST APPARATUSES 6.1. Test apparatuses corresponding to the specified test method, test specifications, standards etc 6.2. Additional test apparatuses are specified in the further parts of this test specification. 7.
13、 REQUIREMENTS 7.1. General requirements. 7.1.1. Materials All used materials must correspond to the drawing spec., and to the details in the releases. So far as plastic - or elastomer materials are used, these following resistances must show: 7.1.1.1. Resistance to protective wax EDS-M-8307. 7.1.1.2
14、. Oil resistance to EDS-T-7418 - +)C2 #)+) All oils, with which the parts can come into contact during the normal operation. #) No injury in function, besides at plug connections max. volume change 5% 7.1.2. Visual - and dimensional test The dimensions and their tolerances determined in drawings and
15、 releases must be observed by the individual components of system. 7.2. Requirements to EDS-T-5235 The requirements and tests specified in the EDS-T-5235 are no more stated separately in these technical delivery conditions. If deviations or supplements are necessary, then these test points are subse
16、quently stated. 7.2.1. Operating voltage range Supplementarily valid: At supply voltages between 6 V and 9 V, the electronic transmission control may not cause any uncontrolled controlling of solenoid valve and of warning lamps. The complete function of system must be guaranteed from 9 V to 16 V. 7.
17、2.2. Operating safety of electronic components EDS-T-5238ELECTRONIC TRANSMISSION CONTROL PAGE: 3/35 ISSUED DATE: 1995. 03. 14 REVISED DATE: 2009. 01. 09 VERSION: 3 GM DAEWOO Auto & Technology Supplementarily valid: 7.2.2.1. At forbidden or absurd combinations of input signals, the transmission must
18、be switched on emergency operation according to specifications, in order to avoid safety - critical driving conditions. Error detection and indication by the warning lamp must correspond to the respectively valid specifications. 7.2.2.2. The manufacturer of control unit has to perform a fault tree a
19、nalysis for the electronic control unit to DIN 25424 and has to transmit at latest at the delivery of first samples. At the analysis, especial single - and double failures of component parts are to be tested, which can lead to the undue controlling of one of the final stages without detection and in
20、dication of fault. If single faults as result of analysis lead to undue controlling of a final stage, so the manufacturer has to submitted proposals as fast as possible, which stop this condition. Target is the fact, that the undue controlling of a final stage as sequence of single failure of someon
21、e component is not possible at the final control unit, without this is indicated by the warning lamp. At changing gear shift during the development of instrument, the fault tree analysis is to be realized and to be made known again. 7.3. Self - diagnosis 7.3.1. The electronic transmission control mu
22、st be equipped with a self - diagnosis system corresponding to EDS-T-5108. 7.3.2. Deviating from EDS-T-5108 it is valid: System interference is indicated by signaling the warning lamp. The communication between control unit and tester through the serial cutting site is also indicated by signaling th
23、e warning lamp. 7.4. Operational description The electronic transmission control carries out the controlling of a motor vehicle automatic transmission with several step of gear. It determines the gear to be put in and so the gear ratio of transmission. Besides, the control unit operates a converter
24、bridging coupling. Both the shift points and the gear shifts are adapted to the respective driving - and operating condition of the vehicle. The driver has to select the possibility under different driving programs. He can determine the fact, whether the transmission is controlled power - and consum
25、ption optimized. On smooth roadway, the transmission control makes possible a starting in a higher step of gear. This so - called winter mode is selected by driver by operating the winter button. Under definite conditions the control unit resets the winter mode independently. At automatic transmissi
26、ons, at which the possibility is existing, to control the hydraulic transmission pressure, this problem is taken over by the electronic transmission control. By adjusting the pressure, both the shift quality and the shift time can be influenced. A cutting site at ignition control unit makes possible
27、 an engine engagement, that is, an influence of ignition point. The adjustment of ignition causes a reduction of engine speed during the gear shifts. Besides, the control unit controls a relay, that disconnects the air - conditioner. In this way the air - conditioner can be disconnected as load, whe
28、n the complete engine performance is required. Central unit of transmission control is the electronic control unit. It contains a microprocessor, in which a determined program is overworked. The vehicle velocity and the load condition of engine must be led to the electronic control as essential cont
29、rol parameter. The drivers program desire as well as the selector lever position are coded through electric switch, and so evaluated by control unit. EDS-T-5238ELECTRONIC TRANSMISSION CONTROL PAGE: 4/35 ISSUED DATE: 1995. 03. 14 REVISED DATE: 2009. 01. 09 VERSION: 3 GM DAEWOO Auto & Technology Furth
30、er input signals are possible. The cutting site at transmission form electro hydraulic final control elements (solenoid valves), which engage either as pure shift valve or as regulating valve into the hydraulics of transmission. The control unit software contains monitoring functions that prevent sa
31、fety - critical driving conditions or overspeeding of engine at interference or wrong operation. Interference is indicated to the driver through a warning lamp, and the fault is coded, accumulated by control unit. The control unit is equipped with a bidirectional diagnosis cutting position to EDS-T-
32、5108. 7.5. Wiring of electronic transmission control EDS-T-5238ELECTRONIC TRANSMISSION CONTROL PAGE: 5/35 ISSUED DATE: 1995. 03. 14 REVISED DATE: 2009. 01. 09 VERSION: 3 GM DAEWOO Auto & Technology 7.6. System components and specification of cutting positions 7.6.1. Electronic control unit 7.6.1.1.
33、Input signals The following described input signals are available at all electronic transmission controls. Further input signals are possible. 7.6.1.1.1. Transmission input speed. 7.6.1.1.1.1. Engine speed. (TD/TN signal corresponding to EDS-T-5103) 7.6.1.1.1.2. Signal of a speed sensor at transmiss
34、ion input. 7.6.1.1.2. Transmission departure speed. 7.6.1.1.3. Load signal. 7.6.1.1.3.1. Analogous signal of a throttle valve potentiometer. 7.6.1.1.3.2. Pulse width - modulated signal from the ignition - injection - control unit. 7.6.1.1.4. Selector lever position. 7.6.1.1.5. Program - button. 7.6.
35、1.1.6. Winter - button. 7.6.1.1.7. Kick down - switch. 7.6.1.1.8. Stimulus line blink code. (Function to EDS-T-5108) 7.6.1.2. Output signals. The following described output signals are available at all electronic transmission controls. 7.6.1.2.1. Gear selection: Control of solenoid valve for putting
36、 the gear steps. 7.6.1.2.2. Converter bridging coupling: Control of a solenoid valve for applying the converter bridging coupling. 7.6.1.2.3. Engine engagement: Signal for release of engine engagement in the ignition control unit. 7.6.1.2.4. Progrqm - / interference - and winter indication: The fina
37、l stages must be laid out, so that it can operate electric indication used in the corresponding vehicle. The short - circuit strength to EDS-T-5235 must be given. 7.6.1.2.5. Further possible output signals. 7.6.1.2.5.1. Transmission pressure: Control of a regulating valve for influencing the hydraul
38、ic transmission principal pressure. 7.6.1.2.5.2. In addition to those described up to now, further special output signals are possible. 7.6.1.3. Input - / output signals. Bidirectional diagnosis - data line to EDS-T-5108. 7.6.2. Selector lever position switch Requirements and tests see part 1a of th
39、is test specification. 7.6.3. Program - button. Switch to earth. Contact resistance. At opened switch : R 1 M EDS-T-5238ELECTRONIC TRANSMISSION CONTROL PAGE: 6/35 ISSUED DATE: 1995. 03. 14 REVISED DATE: 2009. 01. 09 VERSION: 3 GM DAEWOO Auto & Technology At closed switch : R # 20 Current load : 5 mA
40、 to 50 mA. Requirements to EDS-T-5225. 7.6.4. Winter - button. Switch to earth. Electric specifications corresponding to pos. 7.6.3. Requirements to EDS-T-5225. 7.6.5. Kickdown (KD) - switch Switch to earth Function : KD : contact closed. not KD : contact opened. Electric specifications correspondin
41、g to pos. 7.6.3. Requirements to EDS-T-5225. 7.6.6. Throttle valve angle sensor. The throttle valve potentiometer distributes the angular position of throttle valve as analogous voltage. The special operating requirements as well as the requirements and tests with regard to voltage range, temperatur
42、e range and mechanical stress are to be agreed separately, so far as it is not determined on the drawing. 7.6.7. Solenoid valve Requirements and tests see part 1b of this spec 7.7. Test of outputs for the solenoid valves 7.7.1. Output current The outputs must be able to supply the max. current, that
43、 is, the current, which is necessary in the most unfavorable ratios, in order to operate the solenoid valve confidently. 7.7.2. Strength to inductive cut-off peaks. The outputs must be carried out, so that any damage by voltage peak owing to disconnection of solenoid valve or cable break can not occ
44、ur. 7.8. Test of outputs for the warning lamps The outputs are loaded with a determined resistance instead of original load. At control, a min. current determined clearly for every output must flow. 7.9. Test of inputs for electromechanical switch Inputs, to which mechanical switches are connected,
45、must be laid out in their input wiring, so that an input current of min. 20 mA flows at a supply voltage of 14 V. EDS-T-5238ELECTRONIC TRANSMISSION CONTROL PAGE: 7/35 ISSUED DATE: 1995. 03. 14 REVISED DATE: 2009. 01. 09 VERSION: 3 GM DAEWOO Auto & Technology 7.10. Input PWN - load signal Correspondi
46、ng to the requirements of EDS-T-5235 for open - collector - circuits. Shape of signal corresponding to the respectively valid specifications in discussion with the product development and construction. 7.11. Output signal engine engagement Corresponding to the requirements of EDS-T-5235 for GMDAT -
47、collector - circuits. Shape of signal corresponding to the respectively valid specifications in discussion with the product development and construction. 7.12. Function test 7.12.1. Test of operability of control unit. Corresponding to the test data sheet of supplier. (See DWG) 7.12.2. Dynamic funct
48、ion test for checking the normal operation 7.12.2.1. Measurement 7.12.2.1.1. Electric wiring The dynamic function test of electronic control unit is performed by simulating the driving operation. The control unit is connected such as in the vehicle. The outputs of control unit are wired with origina
49、l loads. A computer program determines the input signals for the transmission control. The process computer distributes them through the analogue - or digital outputs. If necessary, electronic accommodating connections are available. 7.12.2.1.2. Driving program A test program serves as operational evaluation of control unit. It simulates a determined driving cycle with following progress : Acceleration from the standstill up to the max. Speed and subsequent retardation up to the standstill. The duration of this process is selected, as it is to be usually expected at a vehicle. Th
