Check Component T1/4 (Ignition Coil 4) [Start Here]

Check component T1/4 (Ignition Coil Cylinder 4)

Safety notes

Hazard as a result of high voltage at the ignition system!
Electronic ignition systems operate within a hazardous power range both at the low voltage side (primary circuit) as well as on the high voltage side (secondary circuit). Contacts with such parts can result in burns, heart flutter or cardiac arrest.
Rules of conduct and protective measures
Persons with heart pacemakers must not perform any work on the ignition system. Switch off the ignition when performing work on the ignition system. Do not touch any parts of the ignition system when starting the engine or when the engine is running. Wear protective shoes with rubber soles. Do not install any uninsulated adapters into the ignition cables.

The ignition system can be tested at the primary and secondary sides. In the event of complaints regarding start or warming-up phase, do not condition the engine to normal operating temperature but proceed on a complaints-related basis. The resistance of the secondary winding cannot be measured because of a diode path.


Test 1: Test secondary voltage of component T1/4 (Ignition Coil Cylinder 4)
Test 1: Test Secondary Voltage of Component T1/4 (Ignition Coil Cylinder 4)

Test 2: Test primary voltage of component T1/4 (Ignition Coil Cylinder 4)
Test 2: Test Primary Voltage of Component T1/4 (Ignition Coil Cylinder 4)

Test 3: Test voltage supply of component T1/4 (Ignition Coil Cylinder 4)
Test 3: Test Voltage Supply of Component T1/4 (Ignition Coil Cylinder 4)

Test 4: Test primary winding of component T1/4 (Ignition Coil Cylinder 4)
Test 4: Test Primary Winding of Component T1/4 (Ignition Coil Cylinder 4)