Self-diagnostic circuit diagram of the engine control system of the Santana 2000GLi sedan
1. VAG1551 fault diagnosis instrument can not only diagnose faults for EFI engines of Red Flag, Jetta, Golf, Passat cars, but also detect faults for Santana car EFI engines. When using the instrument, the car should have the following conditions:
The engine being tested is operated for a sufficient period of time to make the coolant temperature higher than 7 ° C, the battery voltage is normal, the fuses are normal, and the engine ground wire is normal.
(1) Open the fault diagnosis socket cover on the lower side of the selector lever and connect the VAG1551 diagnostic cable with the diagnostic socket (Fig. 1). The cable code is VAG1551/3. 
l a steering wheel; 2 a VACl551 fault diagnosis instrument; 3 a diagnostic instrument power plug; 4 an engine fault diagnosis socket;
5 a shift lever; 6 cigarette lighter and ashtray; 7 an air conditioning control panel to turn on the ignition switch or start the engine to read the fault code, according to the instructions of the VAG1551 diagnostic monitor display to operate the diagnostic instrument. If the engine fails to start due to a fault, the ignition should still be turned on to find all signals.
(2) Press the → key to enter the address code 01 indicating the engine electronic control system, and confirm with the Q key, the display will show:
30090731lAMOTRONICMl·5·4·P1303
The part number of the 300907311A engine controller (actual controller number can be found in the accessory catalog);
MOTRONIC fuel injection system;
Hardware code (manufacturing number) of the Ml.5.4P controller;
1303 controller software code.
The number and code of the controller can be displayed only when the ignition switch is turned on or the engine is running.
(3) Press the → key, the screen displays "Fast Data Transfer, Help Function Selection", ie:
SChneUeUatenUbertragUllgHELP
FUnktlOnanWahlenXX
With the advancement of science and technology, the software of the VAGI551 diagnostic instrument will be upgraded according to different batches of automotive products. Not only the text will change, but also the various data forms will be different.
The VAG1551 has the following functions (see Table 1). 
Note: The measured values ​​displayed in 08 and the measured data sets used are described in the relevant service steps; the other measurement data sets and measured values ​​output by the controller are not used in the customer service.
(4) Press the "print" button to turn on the printer (the indicator light on the button is illuminated), the screen displays: "Fast data transmission, help function selection xx", at this time enter the function code "02" (read the fault code), Press the Q key to confirm, if "x faults are recognized!" is displayed: XFehlerdrkannt! The stored fault codes will be displayed in order and printed out. If the message "No fault is recognized" is displayed, press the → key, then enter the 06 code (end output), and press the Q key to confirm, turn off the ignition switch, and continue to find the relevant part according to the fault.
Motion control sensor is an original part that converts the change of non-electricity (such as speed, pressure) into electric quantity. According to the converted non-electricity, it can be divided into pressure sensor, speed sensor, temperature sensor, etc. It is a measurement, control instrument and Parts and accessories of equipment.
Remote Control Motion Sensor,Photocell And Motion Sensor,Homeseer Motion Sensor,Lutron Motion Sensor Caseta
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