Chip-Tools

ITDEENBGES

Advanced diagnostics with MODI: single-module access, DTCs, live values and actuator tests

Advanced mode, on top of the full scan, lets you connect to an individual electronic module and drive actuators to check components — the electric fuel pump, for instance. This is the part of the job reserved for people who know vehicle electronics.

Procedure

1. Plug the MODI into the OBDII port, pair it over Bluetooth and select the vehicle make: from this point on MODI talks to the phone over Bluetooth using the vehicle's OBD port.
2. Select "Advanced Diagnostics": the interface starts the diagnostic session and shows the number of fault codes in the system and the module status.
3. To clear all faults press "Clear all", at the bottom of the phone screen. Alternatively go into the individual module and clear there only.
4. Select the module you want to work on: the additional diagnostic functions available for that module appear.
5. "Trouble codes" option: read the DTCs held in the selected module, pull up extra information on the code, or clear them.
6. "Live values" option: monitor sensor data in real time, in list or graph view, with the option to save the readings to file.
7. "Actuators" option: press the button to open the list of available components, then select the actuator you want to drive (the example given is the electric fuel pump) and start the test.
8. Physically check the component's response during activation, keeping clear of moving parts.
9. If the module also shows a coding option, it supports coding lists: see the dedicated Fast Coding procedure.
10. Note: the availability of actuators and coding lists depends on the make, model and configuration of the vehicle. Compatibility can be checked in the Brands section at modiobd.com.

Reference screenshots