[4] Glow plug Cylinder 4: Open circuit

[4] Glow plug Cylinder 4: Open circuit

Test 1: Check component R9 (Glow plugs).

1. Check component R9 (Glow plugs).
Check glow plug at cylinder 4.
Warning!Important note

- This vehicle has a quick start preheating system with 7 V glow plugs.
- The glow plugs must never be energized by the vehicle electrical system voltage as this will destroy them.
- Shocks/impacts can result in invisible damage to ceramic glow plugs which later results in engine damage.
- Only use ceramic glow plugs if the packaging is original and unopened.
Important note

- If fault codes concerning several glow plugs occur simultaneously, first check threaded connection 'W11 (Ground point (engine))' on engine wiring harness for component N14/3 (Glow time output stage) for correct seating and tightening torque (8.5 Nm), and correct if necessary.
Communication with ECU required