Self-diagnosis
11 Self-diagnosis of auxiliary coolant heaters -B4W/D4W-
11.1 Connecting vehicle diagnosis, testing and information system VAS 5051A
11.2 Function
11.3 Technical data of self-diagnosis
21.4 Test prerequisites for self-diagnosis
21.5 Diagnosis functions using vehicle diagnosis, testing and information system VAS 5051A
31.6 Fault table
71.7 Overview of selectable display group numbers in measuring value block
12Supplementary heating
151 Auxiliary air heaters -B2L/D2L-
151.1 Repairing petrol electric heater “B2L”
151.2 Removing and installing heater unit (petrol)
171.3 Removing and installing heating/temperature/time control switch E13 (petrol)
181.4 Checking heating/temperature/time control switch E13 (petrol)
191.6 Removing and installing pre-selection clock E111 (petrol)
211.7 Removing and installing heater control unit J65 (petrol)
211.8 Checking heater control unit J65 (petrol)
221.9 Renewing heater fuse S23 (petrol)
221.10 Renewing auxiliary heater fuse S62 (petrol)
231.11 Removing and installing vent (petrol)
231.12 Removing intake hose, outlet duct and combustion air hose (petrol)
241.13 Removing intake duct (petrol)
241.14 Removing and installing exhaust pipe (petrol)
251.15 Dismantling fuel pump G23 (petrol)
251.16 Checking fuel pump G23 (petrol)
251.17 Checking fuel pump G23 installation position (petrol)
261.18 Checking quantity of fuel delivered (petrol)
261.19 Operation and function of pre-selection clock E111 (petrol)
281.20 Dismantling and assembling heater unit “B2L” (petrol)
311.21 Removing and installing heater combustion monitor F16 (petrol)
341.22 Checking heater combustion monitor F16 (petrol)
341.23 Checking temperature limiting switch F82 (petrol)
351.25 Checking glow coil thermal switch F153 (petrol)
361.26 Renewing heater overheating switch F17 (petrol)
371.27 Checking heater overheating switch F17 (petrol)
371.28 Checking temperature sensor G18 (petrol)
391.30 Checking combustion, fresh and heated air blower V81 (petrol)
401.32 Checking ignition transformerf N152 (petrol)
411.33 Dismantling and assembling combustion, fresh and heated air blower V81 (petrol)
411.34 Blower wheel and coupling installation dimensions (petrol)
421.35 Repairing diesel electric heater “D2L”
421.36 Removing and installing heater unit (diesel)
451.37 Removing heating/temperature/time control switch E13 (diesel)
461.38 Operation and function of heating/temperature/time control switch E13 (diesel)
461.39 Removing and installing pre-selection clock E111 (diesel)
471.40 Removing and installing heater control unit J65 (diesel)
471.41 Checking heater control unit J65 (diesel)
481.42 Renewing heater fuse S23 (diesel)
491.43 Renewing auxiliary heater fuse S62 (diesel)
491.44 Removing and installing vent (diesel)
491.45 Removing intake hose, outlet duct and combustion air hose (diesel)
501.46 Removing intake duct (diesel)
501.47 Removing and installing exhaust pipe (diesel)
511.48 Dismantling fuel pump G23 (diesel)
511.49 Checking fuel pump G23 (diesel)
511.50 Checking fuel pump G23 installation position (diesel)
521.51 Checking quantity of fuel delivered (diesel)
521.52 Operation and function of pre-selection clock E111 (diesel)
541.53 Dismantling and assembling heater unit “D2L” (diesel)
571.54 Removing and installing heater combustion monitor F16 (diesel)
601.55 Checking heater combustion monitor F16 (diesel)
601.56 Checking temperature limiting switch F82 (diesel)
611.57 Renewing temperature limiting switch F82 (diesel)
621.58 Renewing heater overheating switch F17 (diesel)
621.59 Checking heater overheating switch F17 (diesel)
621.60 Checking temperature sensor G18 (diesel)
641.62 Checking combustion, fresh and heated air blower V81 (diesel)
651.63 Dismantling and assembling combustion, fresh and heated air blower V81 (diesel)
661.64 Blower wheel and coupling installation dimensions (diesel)
662 Auxiliary air heaters B3LP/D3LP/B3LC/D3LC
675019/1 , vehicles ▸ 08.99
672.3 Function
682.4 Test prerequisites for self-diagnosis
692.5 Operation and function of basic unit VAS 5019/1
702.8 Fault table
762.9 Erasing fault memory using basic unit VAS 5019/1
852.10 Technical data for heaters; vehicles ▸ 08.99
862.11 Technical data for heaters; vehicles 09.99 ▸
862.12 Functional description
872.13 Method of operation
872.14 Repairing auxiliary air heater
882.15 Removing heater unit with bracket
912.16 Removing and installing glow plug for heater Q9
922.17 Checking glow plug for heater Q9
932.18 Removing and installing glow plug mantle
932.19 Removing heater control unit J65
942.20 Removing and installing heating/temperature/time control switch E13
952.21 Removing and installing temperature sensor G18
962.22 Removing and installing pre-selection clock E111
962.23 Renewing fuses in fuse box
972.24 Removing vent in vehicles without camping equipment
972.25 Removing vent in vehicles with camping equipment
982.26 Removing and installing intake duct
982.27 Removing outlet duct and combustion air hose
992.28 Removing and installing exhaust system
992.31 Dismantling fuel pump G23
1012.32 Checking fuel pump G23 installation position
1012.33 Checking quantity of fuel delivered
10109.98 ▸
1072.36 Dismantling and assembling heater unit
1102.37 Removing and installing outer covers and outlet collector
1122.38 Manufacturer's plate “Original replacement part”
1132.39 Removing and installing insulation cover
1132.40 Removing and installing flame monitor G64 and heater overheating switch F17
1132.41 Checking wiring routing in heater unit
1142.42 Removing and installing combustion, fresh and heated air blower V81
1143 Auxiliary coolant heater D3W
1163.1 Self-diagnosis of auxiliary coolant heater D3W using basic unit VAS 5019/1
1163.2 Function
1163.3 Test prerequisites for self-diagnosis
1173.4 Operation and function of basic unit VAS 5019/1
1173.5 Connecting basic unit VAS 5019/1 and interrogating fault memory
1183.6 Fault table
1203.7 Repairing auxiliary coolant heater -D3W-
1223.8 Checking ambient temperature switch F38
1233.9 Removing ambient temperature switch F38
1253.10 Removing and installing exhaust system
1263.11 Securing exhaust pipe to heater unit
1263.12 Removing and installing heater unit
1273.13 Dismantling and assembling heater unit D3W
1283.14 Removing heater control unit J162
1303.15 Checking overheating sensor G189
1303.16 Checking coolant temperature sender, heating G241
1303.17 Removing glow plug for heater Q9
1313.18 Heat exchanger installation position
1313.19 Removing flame monitor G64
1313.20 Checking flame monitor G64
1323.21 Connecting auxiliary coolant heater D3W to coolant circuit
1323.22 Auxiliary coolant heater -D3W- fuel supply
1343.23 Removing and installing fuel pump G23
1353.24 Dismantling fuel pump G23
1363.25 Checking fuel pump G23 installation position
1363.26 Checking quantity of fuel delivered
1363.27 Securing fuel line in engine compartment
1393.28 Securing fuel line on heater unit
1393.29 Auxiliary coolant heater D3W control
1394 Auxiliary coolant heaters -B7W/D7W-
1414.1 Self-diagnosis of auxiliary coolant heater -B7W/D7W-
1414.2 Rectifying faults which have occurred
1434.3 Repairing auxiliary coolant heater -B7W/D7W-
1454.5 Removing pre-selection clock E111
1484.7 Fuse assignment on fuse carrier under driver's seat
1494.8 Removing and installing exhaust system
1504.9 Securing exhaust pipe to heater unit
1504.10 Removing and installing heater unit
1514.11 Operation and function of pre-selection clock E111
1524.12 Dismantling and assembling heater unit -B7W/D7W-
1554.13 Removing and installing combustion air blower V6
1584.14 Removing combustion head
1584.15 Removing and installing heat exchanger
1594.16 Removing and installing temperature sensor G18
1594.17 Checking resistance of temperature sensor G18
1604.18 Removing and installing heater overheating switch F17
1614.19 Resetting triggered heater overheating switch F17
1624.20 Removing cover
1624.21 Removing console
1624.22 Removing series resistor N6
1624.23 Removing 12-pin connector T12
1634.24 Connector assignment of 12-pin connector T12
1634.25 Removing and installing circulation pump V55
1644.26 Checking engine glow plugs Q6
1644.27 Removing and installing glow plug mantle
1654.28 Removing flame monitor G64
1654.29 Connecting auxiliary coolant heater -B7W/D7W- to coolant circuit
1664.30 Auxiliary coolant heater -B7W/D7W- fuel supply
1704.31 Removing and installing fuel pump G23
1724.32 Securing fuel line in engine compartment
1734.33 Checking quantity of fuel delivered
1734.34 Regulating auxiliary coolant heater -B7W/D7W- in heating mode
1755 Auxiliary coolant heaters -B4W/D4W-
1805.1 Repairing auxiliary coolant heater -B4W/D4W-
1805.2 Removing ambient temperature switch F38
1825.3 Removing and installing exhaust system
1835.4 Removing circulation pump V55
1835.5 Securing exhaust pipe to heater unit
1845.6 Removing pre-selection clock E111
1845.7 Test driving TDI vehicles with auxiliary coolant heater
1855.8 Removing and installing heater unit -B4W/D4W-
1885.9 Securing the intake hose
1915.10 Dismantling and assembling heater unit B4W (petrol)
1925.11 Heat exchanger (petrol) installation position
1935.12 Removing heat exchanger (petrol)
1935.13 Removing flame monitor G64 (petrol)
1945.14 Removing glow plug for heater Q9 (petrol)
1945.15 Removing heater control unit J162 (petrol)
1945.16 Renewing combustion air blower V6 (petrol)
1955.17 Removing overheating sensor G189 (petrol)
1955.18 Removing coolant temperature sender, heating G241 (petrol)
1955.19 Dismantling and assembling heater unit D4W (diesel)
1965.20 Heat exchanger (diesel) installation position
1975.21 Removing heat exchanger (diesel)
1975.22 Removing flame monitor G64 (diesel)
1985.23 Removing glow plug for heater Q9 (diesel)
1985.24 Removing heater control unit J162 (diesel)
1985.25 Renewing combustion air blower V6 (diesel)
1995.26 Removing overheating sensor G189 (diesel)
1995.27 Removing coolant temperature sender, heating G241 (diesel)
1995.28 Checking flame monitor G64
2005.29 Checking overheating sensor G189
2005.30 Checking coolant temperature sender, heating G241
2015.31 Checking ambient temperature switch F38
2025.32 Connecting auxiliary coolant heaters B4W and D4W to coolant circuit
2035.33 Bleeding coolant circuit in vehicles with auxiliary coolant heater B4W/D4W
2045.34 Fuel supply to auxiliary coolant heaters B4W/D4W
2045.35 Removing and installing metering pump V54
2085.36 Dismantling metering pump V54
2095.37 Checking the installation position of metering pump V54
2095.38 Checking quantity of fuel delivered
2095.39 Auxiliary coolant heater B4W and D4W control
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