ABS system
1. Comet ABS
Diagnosis location:
behind the driver, above the relay box, etc.;
Diagnosis seat shape and configuration:
1. Flat three-pin -> AK-35 is recommended;
Configuration: power supply (1), ground wire (1), signal wire (2);
Diagnostic line identification method:
1. Special mark: One of the signal lines is between -9V ~ -5V;
2.There is a signal line of about 0.1V near -9V;
3. Pay attention to the distinction between ground wire and 0.1V signal wire;
testing method:
1. Directly use the dedicated connector and take power from the vehicle;
2. Use the AK-35 universal connector to connect RS232_RD and RS232_TD to the -9V and 0.1V of the vehicle respectively, and the vehicle can take power;
2. Wilbert, Volkswagen, Iveco, FAW Jiefang, Great Wall, Jiangling, Ssangyong ABS system
Diagnosis location:
inside the relay box, above the accelerator pedal, near the instrument panel, between the driver and co-driver, etc.;
Diagnosis seat shape and configuration
1. Square standard OBD-> use AK-02/28;
Configuration: power cord (1), ground wire (1 or 2), signal wire (1, No. 7 position);
2. Round 16PIN->use AK-33;
Configuration: power cord (1), ground wire (1), signal wire (1, 8th position);
Note: Pay attention to the difference between WABCO’s ABS diagnostic interface and WABCO’s ABS diagnostic interface on the bus.
Diagnostic line identification method:
1. Check the normal power supply voltage on the vehicle;
2. The signal line on the diagnostic interface is generally about 1V lower than the normal power supply;
3.BOSCH EDC7 ECU is mostly No. 89 signal line, EDC16 ECU is mostly No. 25 signal line.
testing method:
1. Use AK-02/28 or AK-33 directly;
2. When using the AK-35 universal connector (K_LINE is K line), please use a cigarette lighter to get electricity;
3. The EDC7 signal line is No. 89, and EDC16 is mostly the No. 25 signal line. Please note that the ECU and the diagnostic instrument have the same power supply;