611
Thermo King
Warning
Check Glow Plug Circuit
A continuity or consumption issue is detected in the glow plug circuit.
Possible causes
- One or more burnt-out glow plugs
- Defective glow plug relay
- Blown high-power fuse
Recommended actions
- Measure resistance of each glow plug
- Check voltage arrival at the glow plug rail
- Verify relay and its fuses
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