General Instructions/safety Instructions
Prerequisites for checking the multitimer according to the checking program:
- Do not disconnect or connect wiring harness plugs from/to control units or other electronic components when the ignition is switched on.
- During operations in which there is a danger of a short circuit, the ground cable must be disconnected from the battery.
- In order to achieve rapid, specific and accurate fault diagnosis, the checking equipment recommended by Opel/Vauxhall must be used.
- On checking, the battery must be in good condition and sufficiently charged (battery voltage greater than 11.5 V).
- Disconnect battery from vehicle electrical system prior to charging or quick–charging.
- Do not use quick–chargers for starting.
- After disconnecting the battery, volatile memories (e.g. electric window winders, date, clock) must be reprogrammed. If the radio is coded, the customer must be informed of decoding.
Important:
Test steps in which connection contacts are connected to wiring harness plugs or control units with ground or battery voltage must be carried out with great care. An incorrectly selected contact may lead to the destruction of internal circuits in each relevant control unit.