Operation CHARM: Car repair manuals for everyone.
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Precautions For Trouble Diagnosis

Precautions For Trouble Diagnosis

CAN SYSTEM
- Do not apply voltage of 7.0 V or higher to the measurement terminals.
- Use the tester with its open terminal voltage being 7.0 V or less.
- Be sure to turn ignition switch OFF and disconnect the battery cable from the negative terminal before checking the circuit.