AD83.70-D-3006B | Auxiliary heater (AHE) diagnosis operational check using actual values | 7.10.97 |
MODEL 901.###, 902.###, 903.###, 904.### ## as of 753731 as of 3.11.97
with CODE (H12) Hot water auxiliary heater
with CODE (H86) Preselector clock for auxiliary heater
Heater unit designation B5WS,
Heater unit designation D5WS
Danger! | Risk of explosion due to fuel vapors, risk of poisoning from inhaling combustion gases and risk of injury from burns during or after heater operation. | Do not put stationary heater/auxiliary heater or engine with heater booster into operation in confined spaces or while refuelling. Allow heater unit to cool down after operation and wear safety gloves. | |
Auxiliary heater (AHE) diagnosis, previous knowledge | |||
Function check using actual values | |||
Actual value no. | Actual value | Specified value | |
| Operating voltage | > 10.5 V | |
| Output | xx % | |
| Actual value of temperature (coolant temperature) | xx °C | |
| Flame sensor resistance | x.xx kΩ | |
| Stationary heater operation switch on signal (with stationary heater operation) | Display: ON | |
| Heater booster operation switch on signal (with heater booster operation) | Display: ON | |
| Metering pump | Display: ON | |
| Glow pin (glow pin glows) | Display: ON | |
| Blower motor | Display: ON | |
| Coolant circulation pump | Display: ON | |
| Vehicle blower (with stationary heater operation) | Display: ON |