LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Volvo >> 2004 >> V40 Base >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Ignition And Control Systems - Symptom Related Diagnostic Procedures >> Checking The Ignition System (B4204T2 CVVT; 2000) >> Checking the ignition system >> Checking the engine
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Checking the engine

WARNING:

The ignition system operates at high voltages. Contact with the high tension circuit components, such as ignition coils and spark plug caps, is dangerous.

CAUTION:

When fault-tracing the ignition coils, the corresponding injectors must be disconnected. This is to protect the three-way catalytic converter (TWC).

Fig 1: Identifying Engine START Position
GLL101049Courtesy of VOLVO CARS OF NORTH AMERICA.

Does the engine run on only two cylinders?