The engine must be cold when checking (ambient temperature), battery - fully charged (voltage not less than 11.5 V).
Checking the power supply
This test is carried out with the glow plugs installed.
1. Remove the engine top covers, refer to Section Removal and installation of the top cover of the engine.
2. Disconnect the connectors of the glow plugs, for example, using the special clamp HAZET 4760-5.
3. Turn on the test lamp between the cable contact and ground.
4. Turn on the ignition, warm up the engine. Leave the ignition key in the preheat position and keep an eye on the lamp. The lamp should light up. Similarly, check the power of all glow plugs.
5. Connect the glow plug connectors.
Checking glow plugs
1. Sequentially apply an ohmmeter to each glow plug and check whether there is an electric current between the cylinder block and the glow plug.
2. If the current does not pass (0 W), the glow plug is damaged and must be replaced.
3. Connect the glow plug connectors.
4. Reinstall the engine top covers, refer to Section Removal and installation of the top cover of the engine.