Ignition System: Service Precautions

2004 Volvo XC90 AWD L5-2.5L Turbo VIN 59 B5254T2SECTION Service Precautions





Ignition and high voltage components





Switch off the ignition before:
- Connecting and disconnecting the test instruments
- Connecting and disconnecting the connectors
- Taking readings using an ohmmeter.





High voltage
There are dangerous voltages at all points in the ignition system, including the connectors etc.

Warning! The ignition system operates at high power and voltages. Contact with the high tension circuit - the ignition coil, spark plug caps and distributor cap - is dangerous.

Caution! Because of the fire hazard avoid sparking when working on the fuel system, especially when checking the injectors.

RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • You smell fuel, burning insulation, or see smoke.
  • Brakes feel soft, pull hard to one side, or make grinding noises.
  • The engine overheats, stalls repeatedly, or misfires under load.
  • You are missing required tools, torque specs, or safe lifting equipment.
  • You are not confident in the next step or safety outcome.