AD83.70-S-2000B | Auxiliary heater (AHE) diagnosis previous knowledge | 8.9.97 |
MODEL 638.0 /1 /2 as of 15.10.97 with CODE (H12) Hot-water auxilary heater
B5W S or D5W S
MODEL 638.0 /1 /2 with CODE (HZ5) Warm air auxiliary heater 10 kW with timer
B5W S or D5W S
Danger! | Risk of explosion due to fuel vapors, risk of poisoning from combustion gases and risk of injury from burning during or after heater operation | Do not put stationary heater or engine with heater booster into operation in confined spaces or in the vicinity of tank installations. Allow heater unit to cool down after operation and wear protective gloves. | |
| Location and assignment of connectors and sockets | ||
| Location and assignment of ground points | ||
| Location and assignment of cable connectors | ||
| Auxiliary heater (AHE) location of components | For model 638 with engines 111.948, 111.978, 601.942, 601.970 and model 638.244 with engine 104.900 only | |
| Auxiliary heater (AHE) function description contents index | For models 638.094/194/294 only | |
| Electrical wiring diagrams | For model 638 with engines 111.948, 111.978, 601.942, 601.970 and model 638.244 with engine 104.900 only | |
| Electrical wiring diagrams | For model 638 with engines 111.948, 111.978, 601.942, 601.970 and model 638.244 with engine 104.900 only | |
| Electrical wiring diagrams | For models 638.094/194/294 only | |
When disconnecting battery radio frequency remote control and auxiliary heater operating unit (A7) must be re-coupled | |||
Connection and use of test equipment | |||
Connect Hand-Held Tester, read out fault memory | |||
With a fault display, cables, fuses, connectors and connections must be checked for open-circuit, good contact and correct connection in accordance with the currently valid circuit diagram. | |||
Auxiliary heater connector assignment | |||
Auxiliary heater diagnostic tools | |||
Gauge at opened auxiliary heater diagnostic connector | For model 638 with engines 111.948, 111.978, 601.942, 601.970 and model 638.244 with engine 104.900 only | ||
Gauge at opened auxiliary heater diagnostic connector | For models 638.094/194/294 | ||
Auxiliary heater function notes | |||
Auxiliary heater (AHE) resistance values |
Referenced documents
- ad0000s1000az Connection and use of testing equipment
- ad0000s200003a Connecting Hand-Held Tester (HHT), reading fault memory
- ad8370s200001b Auxiliary heater (AHE) connector assignment
- ad8370s200002b Auxiliary heater (AHE) diagnosis tools
- ad8370s200003b Auxiliary heater (AHE) diagnosis, measuring at opened connector
- ad8370s200003c Auxiliary heater (AHE) diagnosis, measuring at opened connector
- ad8370s200004a Auxiliary heater (AHE), function notes
- ad8370s200007b Resistance values, auxiliary heater
- as8370z000201a Risk of explosion caused by fuel vapors igniting, risk of poisoning caused by inhaling combustible gases and risk of injury caused by burns during and after operation of heater unit
- gf0019s1100a Arrangement and assignment of connectors and sockets
- gf0019s2000a Arrangement and assignment of ground points
- gf0019s3100a Arrangement and assignment of terminal blocks
- gf8370s000303b Auxiliary heater (AHE) arrangement of components
- gf8370s0998a Contents - function description of auxiliary heater (ZHE)
- pe8370s2001c Wiring diagram of auxiliary heater (AHE)
- pe8370s2001d Wiring diagram of auxiliary heater (AHE)
- pe8370s2001e Wiring diagram of auxiliary heater (ACH)