1. Disconnect a wire from the negative plug of the storage battery.
2. Remove the main relay.
3. Using an ohmmeter, check the conductivity of the relay.
A) Check for continuity between leads "A" And "IN" and the absence of conductivity between the terminals "WITH" And "D".
b) Apply battery voltage to terminal "A", and the mass "IN" and check the continuity between the terminals "WITH" And "ABOUT".
If the described conditions are not met, replace the relay.