Gm Aldl Connector3/22/2021
Uses the same DelphiPackard connector, terminals, and seals as the original factory connector.Assembled with the factory correct cross linked polyethelene high temperature TXL wire in the proper gauge.
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G Free Shipping Pre-Owned C 79.21 Top Rated Seller or Best Offer From United States C 20.54 shipping Customs services and international tracking provided Tech 1 Diagnostic Scanner Isuzu 3 Pin ALDL Adapter Model Number 94-027 Pre-Owned C 40.73 Top Rated Seller Was: Previous Price C 135.75 70 off From United States or Best Offer Customs services and international tracking provided C 20.85 shipping Tech 1 Diagnostic Scanner ALDL Pin E Adapter 94-014 F Y Cars 5.0L 5.7L Pre-Owned C 40.73 Top Rated Seller Was: Previous Price C 135.75 70 off From United States or Best Offer Customs services and international tracking provided C 20.85 shipping USED Testron Corporation T-14677-A-1419P 16-Way ALDL Connector Pre-Owned C 271.64 Top Rated Seller or Best Offer From United States Customs services and international tracking provided TESTRON CORP. User Agreement, Privacy, Cookies and AdChoice Norton Secured - powered by Verisign Amounts shown in italicized text are for items listed in currency other than Canadian dollars and are approximate conversions to Canadian dollars based upon Bloombergs conversion rates. For more recent exchange rates, please use the Universal Currency Converter This page was last updated: 20-Jul 22:33. See each listing for international shipping options and costs. Experimentation was done with using a 555 Timer circuit and using a set capacitance value with a potentiometer in the RC section of the 555 Timer circuit. Atmel AVR STK500 board connected to a LCD, a small interface circuit, and a 8D 7730 GM ECU not shown in picture. I have copied and pasted a lot of the description out of the project formal report. Much of this information was written in a formal technical writing manor, I have since gone back and added some for more in-depth information others might find useful who have more background knowledge on GM engine control systems then my professor who read the report at the time. That is also why you will see two distinct writing styles, the more formal style used in the report and my more laid back personal how-to style of the added information sections. Gm Aldl Connector Serial Interface ToThe device utilizes a propriety serial interface to connect to an automotive engine control computer and retrieve current engine conditions. This interface utilizes an Atmel AVR 8-bit microcontroller to perform serial communication over a one wire serial interface with the ECU. This diagnostic data is then processed by the AVR microcontroller and outputted to a LCD in an easy to read format for the user to view. GM started using the 8192 baud OBD-I interface in 1986 and continued using it widely until 1995 when a universal interface and protocol was mandated by SAE (OBD-II). The OBD-I interface on GM cars is a proprietary GM interface. The ECU has a customized version of the Motorola 6811 processor and runs code written in Assembly. The processor runs at 8.388 Mhzs, has 2 kilobytes of RAM, and a 32 kilobyte UV EPROM for code and calibration data. This code has since been disassembled and commented by auto hobbyists for the general public use. GM has platform dependent code which is vehicle specific and is called code masks. The specific code mask a vehicle runs is determined by engine type, transmission configuration, which ECU is used in the vehicle, and other vehicle features. ECU code along with engine specific data such as fuel maps are hard coded into a removable EPROM chip inside the ECU, which is called the MemCal, which stands for Memory Calibration Unit. This made it easy for GM to use the same ECU across different platforms and for technicians to upgrade the calibration in case a problem was found after production. Each critical engine sensor the ECU reads is simulated so the ECU will not go into an error running state. Some sensors are simply variable resistors such as the temperature sensors and throttle position sensors, so these could be simulated with a potentiometer. The ECU outputs a 5 volt reference for all the resistance based sensor circuits. For the temperature sensors and throttle position sensors, potentiometer resistance values were selected based on the resistance range of the original sensor the potentiometer was replacing. Two variable frequency square wave pulse generation circuits had to be designed to simulate the vehicle speed sensor and the engine RPM input. The frequency of each square wave is directly proportional to the speed in MPH and engine revolutions in RPM the ECU reads.
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