Flame monitor
â–¶ How to fix
Check the flame monitor. Measurement points 15 and 16 in the connector to the auxiliary heater control unit. Resistance value: 650 kohm at -25 °C 1100 kohm at +25 °C. Check the fuel supply. Check that the exhaust pipe is not blocked. Check the combustion chamber. Check the glow plug. Measurement points 2 and 7 in the connector to the auxiliary heater control unit. Resistance value: 2 ohms.
What you'll see
No driver-visible symptom recorded.
System reaction
No system-reaction text recorded.
Diagnostic depth
Detection
The flame disappears in the HIGH position.
Possible cause
The flame disappears when the temperature falls below 120°C and the auxiliary heater is in the HIGH operating mode.