Operation CHARM: Car repair manuals for everyone.

Control Modules




General Information

Control Modules







Connecting and disconnecting control modules

Always switch off the ignition before connecting and disconnecting control modules, connectors and the breakout box.

The ignition must be switched off when taking readings with an ohmmeter.







Temperature

The control modules must not be heated to above 80 Degree C. Remove control modules when stoving for example.

Arc welding

Always disconnect the battery negative lead to prevent a short-circuit.

Position the welding ground as close to the welding site as possible, otherwise different ground potentials may be generated in different components.

When welding close to an electronic module, the unit must be removed to avoid heat damage.

Replacement

Do not replace a control module without checking its wiring and components. Otherwise the new component may be damaged in the same way as the old one.