Body Electrical System

Repair Procedures

12steps
~72min
3/5difficulty
Done 0 of 12

DEPOSIT

  1. Disconnect the negative (-) battery terminal.
  2. Remove the instrument panel center panel. (Refer to Body - Instrument Panel)
  3. Remove the BCM (A) after loosening the nut, and disconnect the connectors (B).

REMEDY

  1. Install the BCM.
  2. Install the instrument panel center panel.
  3. Connect the negative (-) battery terminal.

BCM Diagnosis Using GDS

  1. The body electrical system can be quickly diagnosed for defective parts using the Global Diagnostic System (GDS). The GDS provides the following information.
    1. Self-diagnosis: checking and displaying diagnostic trouble codes (DTC)
    2. Current data: checking the input/output status of the system
    3. Actuation test: checking the operating conditions of the system
    4. Additional function: control other than operation, such as option setting and zero point adjustment
  2. Select the "Vehicle Model" and the system to be checked in order to inspect the vehicle with the scan tool.
  3. Select "Body Control Module (BCM)".
  4. Select "Current Data" to check the current status, input/output. Input/output for the sensors connected to the BCM can be checked.
  5. To perform data operation of each module, select "Activation Test".
  6. To change a user setting, select "User Setting".

Test yourself

A quick Hyundai i20 quiz: every answer comes with an explanation and a link to the manual page.