07.1-015 Function exhaust gas recirculation
The vehicles listed in the table below were equipped with an electronically/pneumatically-controlled exhaust gas recirculation system and oxidation catalytic convertor as of the respective model year.
National version
Engine | Model year/National version | ||||||
1984 | 1985 | 1986 | 1987 | 1988 | 1989 | 1990 | |
601.911 | | | | ||||
601.912 | | | | ||||
601.921 | | | |||||
602.911 | | | | ||||
602.912 | | | |||||
603.912 | | | | ||||
Basic and national version
601.911 601.912 | 1991 | 1992 Std with code 62/0 as of 06/92 | |
601.913 | Std with code 62/0 as of 06/93 | ||
602.91 | 1991 | 1992 Std with code 62/0 as of 06/92 | |
603.91 | 1991 | 1992 Std with code 62/0 as of 06/92 | |
A. Function diagrams
Engine 601.92 in model 201
California model year 1984 1st version
Function diagram exhaust gas recirculation with manual transmission
L2 | Speed sensor speedometer |
L3 | Speed sensor starter ring gear |
N37 | Control unit exhaust gas recirculation |
S25/1 | Temperature switch 100 °C |
S27/6 | Microswitch compressor shut-off (AGR) |
Y27 | Electrical change-over valve for ARF valve |
Y28 | Electrical change-over valve for vacuum control flap |
a | Ventilation line to vehicle interior |
b | Key shut-off |
c | Remaining users |
d | Automatic transmission |
e | Brake booster |
f | To AC compressor control unit |
sw | black |
bl | blue |
br | brown |
gr | green |
vi | purple |
rt | red |
ge | yellow |
1 | Injection pump |
2 | Governor |
4 | Vacuum unit idle speed increase |
5 | ADA unit |
6 | Vacuum unit (stop) |
60 | ARF valve |
61b | Choke 0.5 mm orifice diameter |
62 | Ventilation filter |
65 | Vacuum control valve |
67 | Vacuum pump |
99 | Vacuum control flap |
100 | Vacuum nozzle for vacuum control flap |
105 | Intake pipe |
110 | Exhaust manifold |
120 | Exhaust gas recirculation line |
123 | Vacuum transducer |
124 | Adjusting screw for vacuum transducer |
128 | Thermovalve closes at approx. 17 °C |
130 | Thermovalve opens at approx. 17 °C |
136 | Starter ring gear |
140 | Check valve brake booster |
Engine 601.92 in model 201
California model year 1984 1st version
Function diagram exhaust gas recirculation with automatic transmission
L3 | Speed sensor starter ring gear |
N37 | Control unit exhaust gas recirculation |
S25/1 | Temperature switch 100 °C |
S27/6 | Microswitch compressor shut-off (AGR) |
Y12 | Electrical change-over valve for speed increase |
Y27 | Electrical change-over valve for ARF valve |
Y28 | Electrical change-over valve for vacuum control flap |
a | Ventilation line to vehicle interior |
b | Key shut-off |
c | Remaining users |
d | Automatic transmission |
e | Brake booster |
f | To AC compressor control unit |
sw | black |
bl | blue |
br | brown |
gr | green |
vi | purple |
rt | red |
ge | yellow |
1 | Injection pump |
2 | Governor |
4 | Vacuum unit idle speed increase |
5 | ADA unit |
6 | Vacuum unit (stop) |
60 | ARF valve |
61a | Choke |
61b | Choke 0.5 mm orifice diameter |
62 | Ventilation filter |
65 | Vacuum control valve |
67 | Vacuum pump |
72 | Damper |
99 | Vacuum control flap |
100 | Vacuum nozzle for vacuum control flap |
105 | Intake pipe |
110 | Exhaust manifold |
120 | Exhaust gas recirculation line |
123 | Vacuum transducer |
124 | Adjusting screw for vacuum transducer |
128 | Thermovalve closes at approx. 17 °C |
130 | Thermovalve opens at approx. 17 °C |
136 | Starter ring gear |
140 | Check valve brake booster |
Engine 601.92 in model 201
Federal and California model year 1985 2nd version
Function diagram exhaust gas recirculation manual and automatic transmission
S25/4 | Temperature switch 105/115 °C |
S27/6 | Microswitch compressor shut-off (AGR) |
Y27 | Electrical change-over valve for ARF valve |
Y28 | Electrical change-over valve for vacuum control flap |
a | Ventilation line to vehicle interior |
b | Key shut-off |
c | Remaining users |
d | Automatic transmission |
e | Brake booster |
VAC | = Vacuum |
VCV | = Vacuum control valve |
EGR | = Exhaust gas recirculation valve |
ATM | = Atmosphere |
bk | black |
bl | blue |
br | brown |
gr | green |
pu | purple |
re | red |
ye | yellow |
1 | Injection pump |
2 | Governor |
5 | ADA unit |
6 | Vacuum unit (stop) |
60 | ARF valve |
61a | Choke |
61b | Choke 0.5 mm orifice diameter |
62 | Ventilation filter |
65 | Vacuum control valve |
67 | Vacuum pump |
72 | Damper (only automatic transmission) |
99 | Vacuum control flap |
100 | Vacuum nozzle for vacuum control flap |
105 | Intake pipe |
110 | Exhaust manifold |
120 | Exhaust gas recirculation line |
123 | Vacuum transducer |
124 | Adjusting screw for vacuum transducer |
136 | Starter ring gear |
L2 | Inductive speed sensor |
L3 | Speed sensor starter ring gear |
N37 | Control unit exhaust gas recirculation |
Engine 602 in model 201
as of model year 1986 1st version
Function diagram exhaust gas recirculation
B6 | Hall-effect speed sensor |
B11/1 | Coolant temperature sensor |
L3 | Speed sensor starter ring gear |
N6 | Compressor shut-off control unit |
N8 | Idle speed control unit |
N37 | Control unit exhaust gas recirculation |
S25/5 | Temperature switch 105/115 °C |
S25/6 | Temperature switch 50 °C |
S25/7 | Temperature switch 25 °C AGR |
S25/9 | Temperature switch 97 °C AGR |
S27/6 | Microswitch compressor shut-off/AGR |
Y22 | Electromagnetic actuator ELR |
Y27 | Change-over valve AGR |
Y28 | Change-over valve vacuum control flap |
Y29 | Change-over valve (automatic transmission) |
1 | Injection pump |
2 | Governor |
5 | ADA unit |
6 | Vacuum unit (stop) |
61a | Choke, blue |
61b | Choke, orange |
62 | Filter |
65 | Vacuum control valve |
67 | Vacuum pump |
72 | Damper |
94 | Air guide housing |
100 | Vacuum unit/vacuum control flap |
105 | Intake pipe |
110 | Exhaust manifold |
120 | Exhaust gas recirculation line |
136 | Starter ring gear |
Engine 602 in model 201
as of model year 1986 2nd version
Function diagram exhaust gas recirculation
B6 | Hall-effect speed sensor |
B11/1 | Coolant temperature sensor |
L3 | Speed sensor starter ring gear |
N6 | Compressor shut-off control unit |
N8 | Idle speed control unit |
N37 | Control unit exhaust gas recirculation |
S25/5 | Temperature switch 105/115 °C |
S25/6 | Temperature switch 50 °C |
S25/7 | Temperature switch 25 °C AGR |
S25/9 | Temperature switch 97 °C AGR |
S27/6 | Microswitch compressor shut-off/ |
Y22 | Electromagnetic actuator ELR |
Y27 | Change-over valve AGR |
Y28 | Change-over valve vacuum control flap |
Y29 | Change-over valve (automatic transmission) |
1 | Injection pump |
2 | Governor |
5 | ADA unit |
6 | Vacuum unit (stop) |
61a | Choke, blue |
61b | Choke, orange |
62 | Filter |
65 | Vacuum control valve |
67 | Vacuum pump |
72 | Damper |
94 | Air guide housing |
100 | Vacuum unit/vacuum control flap |
105 | Intake pipe |
110 | Exhaust manifold |
120 | Exhaust gas recirculation line |
136 | Starter ring gear |
Engine 602 in model 201
model year 1989
Function diagram exhaust gas recirculation
B11/1 | Coolant temperature sensor |
B11/7 | Climate temperature sensor |
L3 | Speed sensor starter ring gear |
N6 | Compressor shut-off control unit |
N8 | Idle speed control unit |
N37/2 | Control unit exhaust gas recirculation |
S25/5 | Temperature switch 105/115 °C |
S25/6 | Temperature switch 50 °C |
S25/7 | Temperature switch 25 °C AGR |
S25/9 | Temperature switch 97 °C AGR |
S27/6 | Microswitch compressor shut-off/ |
Y22 | Electromagnetic actuator ELR |
Y27 | Change-over valve AGR |
Y28 | Change-over valve vacuum control flap |
Y29 | Change-over valve (automatic transmission) |
a | Ventilation to vehicle interior |
c | Remaining users |
d | Vacuum unit automatic transmission |
Vacuum connections on vacuum transducer | |
VAC | - Vacuum from vacuum pump |
VCV | - To vacuum control valve |
ATM | - Ventilation to vehicle interior |
EGR | - Exhaust gas recirculation to exhaust gas recirculation valve |
1 | Injection pump |
2 | Governor |
5 | ADA unit |
6 | Vacuum unit (stop) |
60 | Exhaust gas recirculation valve |
61a | Choke, blue |
61b | Choke |
62 | Filter |
65 | Vacuum control valve |
67 | Vacuum pump |
72 | Damper |
94 | Air guide housing |
100 | Vacuum unit/vacuum control flap |
105 | Intake pipe |
110 | Exhaust manifold |
120 | Exhaust gas recirculation line |
123 | Vacuum transducer |
136 | Starter ring gear |
Engine 601 in model 124
Code 620 model years 1987 and 1988
Function diagram exhaust gas recirculation
a | Ventilation to vehicle interior |
c | Remaining users |
d | Vacuum unit automatic transmission |
136 | Starter ring gear |
B6 | Hall-effect speed sensor |
L3 | Speed sensor starter ring gear |
N37/1 | Control unit exhaust gas recirculation |
S25/7 | Temperature switch 25 °C AGR |
S25/9 | Temperature switch 97 °C AGR |
S27/3 | Microswitch exhaust gas recirculation |
S27/4 | Microswitch vacuum control flap |
Y27 | Change-over valve AGR |
Y28 | Change-over valve vacuum control flap |
Vacuum connections on vacuum transducer | |
VAC | - Vacuum from vacuum pump |
VCV | - To vacuum control valve |
ATM | - Ventilation to vehicle interior |
EGR | - Exhaust gas recirculation to exhaust gas recirculation valve |
1 | Injection pump |
2 | Governor |
4 | PLA unit |
5 | ADA unit |
6 | Vacuum unit (stop) |
60 | Exhaust gas recirculation valve |
61a | Choke, blue |
61b | Choke, orange |
62 | Filter |
65 | Vacuum control valve |
67 | Vacuum pump |
72 | Damper |
94 | Air guide housing |
100 | Vacuum unit/vacuum control flap |
105 | Intake pipe |
110 | Exhaust manifold |
120 | Exhaust gas recirculation line |
123 | Vacuum transducer |
Engine 601 in models 124 and 201
model year 1988
Function diagram exhaust gas recirculation with manual transmission
B6 | Hall-effect speed sensor |
L3 | Speed sensor starter ring gear |
N37/2 | Control unit exhaust gas recirculation |
S25/4 | Temperature switch 100 °C AGR |
S25/7 | Temperature switch 25 °C AGR |
S27/6 | Microswitch exhaust gas recirculation |
Y27 | Change-over valve AGR |
Y28 | Change-over valve vacuum control flap |
a | Ventilation to vehicle interior |
c | Remaining users |
1 | Injection pump |
2 | Governor |
4 | PLA unit |
5 | ADA unit |
6 | Vacuum unit (stop) |
60 | Exhaust gas recirculation valve |
61a | Choke, blue |
61b | Choke, orange |
62 | Filter |
65 | Vacuum control valve |
67 | Vacuum pump |
94 | Air guide housing |
100 | Vacuum unit/vacuum control flap |
105 | Intake pipe |
110 | Exhaust manifold |
120 | Exhaust gas recirculation line |
136 | Starter ring gear |
Engine 601 in models 124 and 201
model year 1988
Function diagram exhaust gas recirculation automatic transmission
B11/1 | Coolant temperature sensor |
B11/7 | Climate temperature sensor |
L3 | Speed sensor starter ring gear |
N6 | Compressor shut-off control unit |
N8 | Idle speed control unit (ELR) |
N37/2 | Control unit exhaust gas recirculation |
S25/4 | Temperature switch 100 °C AGR |
S25/7 | Temperature switch 25 °C AGR |
S27/6 | Microswitch exhaust gas recirculation |
Y22 | Electromagnetic actuator ELR |
Y27 | Change-over valve AGR |
Y28 | Change-over valve vacuum control flap |
a | Ventilation to vehicle interior |
c | Remaining users |
d | Vacuum unit automatic transmission |
Vacuum connections on vacuum transducer | |
VAC | - Vacuum from vacuum pump |
VCV | - To vacuum control valve |
ATM | - Ventilation to vehicle interior |
EGR | - Exhaust gas recirculation to exhaust gas recirculation valve |
1 | Injection pump |
2 | Governor |
5 | ADA unit |
6 | Vacuum unit (stop) |
60 | Exhaust gas recirculation valve |
61a | Choke, blue |
61b | Choke, orange |
62 | Filter |
65 | Vacuum control valve |
67 | Vacuum pump |
72 | Damper |
94 | Air guide housing |
100 | Vacuum unit/vacuum control flap |
105 | Intake pipe |
110 | Exhaust manifold |
120 | Exhaust gas recirculation line |
123 | Vacuum transducer |
136 | Starter ring gear |
Engine 603.912 in model 124
model year 1988
Function diagram exhaust gas recirculation
B11/1 | Coolant temperature sensor |
B11/7 | Climate temperature sensor |
L3 | Speed sensor starter ring gear |
N6 | Compressor shut-off control unit |
N8 | Idle speed control unit |
N37/2 | Control unit exhaust gas recirculation |
S25/7 | Temperature switch 25 °C AGR |
S25/9 | Temperature switch 97 °C AGR |
S27/6 | Microswitch exhaust gas recirculation |
Y22 | Electromagnetic actuator ELR |
Y27 | Change-over valve AGR |
Y28 | Change-over valve vacuum control flap |
VAC | - Vacuum from vacuum pump |
VCV | - To vacuum control valve |
ATM | - Ventilation to vehicle interior |
EGR | - Exhaust gas recirculation to exhaust gas recirculation valve |
1 | Injection pump |
2 | Governor |
5 | ADA unit |
6 | Vacuum unit (stop) |
60 | Exhaust gas recirculation valve |
61a | Choke, blue |
61b | Choke, orange |
62 | Filter |
65 | Vacuum control valve |
67 | Vacuum pump |
72 | Damper |
94 | Air guide housing |
100 | Vacuum unit/vacuum control flap |
105 | Intake pipe |
110 | Exhaust manifold |
120 | Exhaust gas recirculation line |
123 | Vacuum transducer |
a | Ventilation to vehicle interior |
c | Remaining users |
136 | Starter ring gear |
Engine 601 with manual transmission
and codes 830 and 960 model year 1989
Function diagram exhaust gas recirculation
110 | Exhaust manifold |
120 | Exhaust gas recirculation line |
136 | Starter ring gear |
B6 | Hall-effect speed sensor |
L3 | Speed sensor starter ring gear |
N37/2 | Exhaust gas recirculation AGR + II (11-pole) control unit |
S25/1 | Temperature switch 100 °C |
S25/7 | Temperature switch 25 °C AGR |
S27/6 | Microswitch compressor shut-off/AGR |
Y27 | Change-over valve exhaust gas recirculation |
Y28 | Change-over valve vacuum control flap |
a | Ventilation to vehicle interior |
c | Remaining users |
1 | Injection pump |
2 | Governor |
4 | PLA unit |
5 | ADA unit |
6 | Vacuum unit (stop) |
60 | Exhaust gas recirculation valve |
61a | Choke, blue |
61b | Choke, orange |
62 | Filter |
65 | Vacuum control valve |
67 | Vacuum pump |
94 | Air guide housing |
100 | Vacuum unit/vacuum control flap |
105 | Intake pipe |
Engine 601 with automatic transmission and AC compressor
and codes 830 and 960 model year 1989
Function diagram exhaust gas recirculation
L3 | Speed sensor starter ring gear |
N6 | Compressor shut-off control unit |
N8 | Idle speed control unit |
N37/2 | Exhaust gas recirculation control unit |
S25/1 | Temperature switch 100 °C |
S25/7 | Temperature switch 25 °C exhaust gas recirculation |
S27/6 | Microswitch compressor shut-off/ARF |
Y22 | Electromagnetic actuator, electronic idle speed control |
Y27 | Change-over valve ARF |
Y28 | Change-over valve vacuum control flap |
a | Ventilation to vehicle interior |
c | Remaining users |
d | Vacuum unit automatic transmission |
Vacuum connections on vacuum transducer | |
VAC | Vacuum from vacuum pump |
VCV | To vacuum control valve |
ATM | Ventilation to vehicle interior |
EGR | Exhaust gas recirculation to exhaust gas recirculation valve |
1 | Injection pump |
2 | Governor |
5 | ADA unit |
6 | Vacuum unit (stop) |
60 | Exhaust gas recirculation valve |
61a | Choke, blue |
61b | Choke |
62 | Filter |
65 | Vacuum control valve |
67 | Vacuum pump |
72 | Damper |
94 | Air guide housing |
100 | Vacuum unit/vacuum control flap |
105 | Intake pipe |
110 | Exhaust manifold |
120 | Exhaust gas recirculation line |
123 | Vacuum transducer |
136 | Starter ring gear |
B11/1 | Coolant temperature sensor, electronic idle speed control (ELR) |
B11/7 | Temperature sensor (automatic climate control) |
Engine 602 with manual transmission
model year 1989
Function diagram exhaust gas recirculation
105 | Intake pipe |
110 | Exhaust manifold |
120 | Exhaust gas recirculation line |
136 | Starter ring gear |
B6 | Hall-effect speed sensor |
L3 | Speed sensor starter ring gear |
N37/2 | Exhaust gas recirculation control unit |
S25/7 | Temperature switch 25 °C exhaust gas recirculation |
S25/9 | Temperature switch 97 °C exhaust gas recirculation |
S27/6 | Microswitch compressor shut-off/AGR |
Y27 | Change-over valve AGR |
Y28 | Change-over valve vacuum control flap |
a | Ventilation to vehicle interior |
c | Remaining users |
1 | Injection pump |
2 | Governor |
4 | PLA unit |
5 | ADA unit |
6 | Vacuum unit (stop) |
60 | Exhaust gas recirculation valve |
61a | Choke, blue |
61b | Choke |
62 | Filter |
65 | Vacuum control valve |
67 | Vacuum pump |
72 | Damper |
94 | Air guide housing |
100 | Vacuum unit/vacuum control flap |
Engine 602 with automatic transmission and AC compressor
and code 830 model year 1989
Function diagram exhaust gas recirculation
L3 | Speed sensor starter ring gear |
N6 | Compressor shut-off control unit |
N8 | Idle speed control unit |
N37/2 | Exhaust gas recirculation control unit |
S25/7 | Temperature switch 25 °C exhaust gas recirculation |
S25/9 | Temperature switch 97 °C exhaust gas recirculation |
S27/6 | Microswitch compressor shut-off/ARF |
Y22 | Electromagnetic actuator, electronic idle speed control |
Y27 | Change-over valve AGR |
Y28 | Change-over valve vacuum control flap |
a | Ventilation to vehicle interior |
c | Remaining users |
d | Vacuum unit automatic transmission |
Vacuum connections on vacuum transducer | |
VAC | Vacuum from vacuum pump |
VCV | To vacuum control valve |
ATM | Ventilation to vehicle interior |
EGR | Exhaust gas recirculation to exhaust gas recirculation valve |
1 | Injection pump |
2 | Governor |
5 | ADA unit |
6 | Vacuum unit (stop) |
60 | Exhaust gas recirculation valve |
61a | Choke, blue |
61b | Choke |
62 | Filter |
65 | Vacuum control valve |
67 | Vacuum pump |
72 | Damper |
94 | Air guide housing |
100 | Vacuum unit/vacuum control flap |
105 | Intake pipe |
110 | Exhaust manifold |
120 | Exhaust gas recirculation line |
123 | Vacuum transducer |
136 | Starter ring gear |
B11/1 | Coolant temperature sensor, electronic idle speed control (ELR) |
B11/7 | Temperature sensor (automatic climate control) |
Engine 603 with manual transmission
model year 1989
Function diagram exhaust gas recirculation
B6 | Hall-effect speed sensor |
B11/1 | Coolant temperature sensor, electronic idle speed control (ELR) |
B11/7 | Temperature sensor (automatic climate control) |
L3 | Speed sensor starter ring gear |
N6 | Compressor shut-off control unit |
N8 | Idle speed control unit |
N37/2 | Exhaust gas recirculation control unit |
S25/7 | Temperature switch 25 °C exhaust gas recirculation |
S25/9 | Temperature switch 97 °C exhaust gas recirculation |
S27/6 | Microswitch compressor shut-off/ARF |
Y22 | Electromagnetic actuator, electronic idle speed control |
Y27 | Change-over valve AGR |
Y28 | Change-over valve vacuum control flap |
a | Ventilation to vehicle interior |
c | Remaining users |
1 | Injection pump |
2 | Governor |
5 | ADA unit |
6 | Vacuum unit (stop) |
60 | Exhaust gas recirculation valve |
61a | Choke, blue |
61b | Choke |
62 | Filter |
65 | Vacuum control valve |
67 | Vacuum pump |
72 | Damper |
94 | Air guide housing |
100 | Vacuum unit/vacuum control flap |
105 | Intake pipe |
110 | Exhaust manifold |
120 | Exhaust gas recirculation line |
136 | Starter ring gear |
Engine 603 with automatic transmission
and code 830 model year 1989
Function diagram exhaust gas recirculation
L3 | Speed sensor starter ring gear |
N6 | Compressor shut-off control unit |
N8 | Idle speed control unit |
N37/2 | Exhaust gas recirculation control unit |
S25/7 | Temperature switch 25 °C exhaust gas recirculation |
S25/9 | Temperature switch 97 °C exhaust gas recirculation |
S27/6 | Microswitch compressor shut-off/ARF |
Y22 | Electromagnetic actuator, electronic idle speed control |
Y27 | Change-over valve AGR |
Y28 | Change-over valve vacuum control flap |
a | Ventilation to vehicle interior |
c | Remaining users |
d | Vacuum unit automatic transmission |
Vacuum connections on vacuum transducer | |
VAC | Vacuum from vacuum pump |
VCV | To vacuum control valve |
ATM | Ventilation to vehicle interior |
EGR | Exhaust gas recirculation to exhaust gas recirculation valve |
1 | Injection pump |
2 | Governor |
5 | ADA unit |
6 | Vacuum unit (stop) |
60 | Exhaust gas recirculation valve |
61a | Choke, blue |
61b | Choke |
62 | Filter |
65 | Vacuum control valve |
67 | Vacuum pump |
72 | Damper |
94 | Air guide housing |
100 | Vacuum unit/vacuum control flap |
105 | Intake pipe |
110 | Exhaust manifold |
120 | Exhaust gas recirculation line |
123 | Vacuum transducer |
136 | Starter ring gear |
B11/1 | Coolant temperature sensor, electronic idle speed control (ELR) |
B11/7 | Temperature sensor (automatic climate control) |
Engine 601.91, 602 with manual and automatic transmission as of model year 1990
Engine 601, 602.91 with manual transmission as of model year 1991 and KAT
(code 62/0) as of 06/90.
As of model year 1992 all versions.
Function diagram exhaust gas recirculation
1) Deleted on engine 601 code 960 and 830 - model year 1991
120 | Exhaust gas recirculation line |
136 | Starter ring gear |
180 | Thermovalve opens at 40 °C (black) |
224 | Accelerator pedal |
B6 | Hall-effect speed sensor 1) |
L3 | Speed sensor starter ring gear |
N37/2 | Exhaust gas recirculation control unit (11 pole) |
S25/1 | Temperature switch 100 °C |
S25/7 | Temperature switch 25 °C exhaust gas recirculation |
S25/9 | Temperature switch 97 °C |
S27/6 | Microswitch compressor shut-off/ARF |
Y27 | Change-over valve EGR |
Y28 | Change-over valve pressure control flap |
a | Ventilation to vehicle interior |
b | Remaining users |
1 | Injection pump |
2 | Governor |
4 | PLA unit |
5 | ADA unit |
6 | Vacuum unit (stop) |
60 | EGR valve |
61a | Choke blue |
61b | Choke orange |
62 | Filter |
65 | Vacuum control valve |
67 | Vacuum pump |
72 | Damper |
94 | Air guide housing |
100 | Vacuum unit/vacuum control flap |
105 | Intake pipe |
110 | Exhaust manifold |
Note
Temperature switch 100 °C (S25/1) only applies for engine 601
Temperature switch 97 °C (S25/9) only applies for engine 602
Engine 603 with manual transmission model year 1991 and code 62/0 as of 06/90
Function diagram exhaust gas recirculation
224 | Accelerator pedal |
B11/1 | Coolant temperature sensor, electronic idle speed control (ELR) |
B11/7 | Temperature sensor (automatic climate control) |
L3 | Compressor shut-off control unit |
N6 | Compressor shut-off control unit |
N8 | Idle speed control unit |
N37/2 | Exhaust gas recirculation control unit ARF + II (11 pole) |
S25/7 | Temperature switch 25 °C exhaust gas recirculation |
S25/9 | Temperature switch 97 °C exhaust gas recirculation |
S27/6 | Microswitch compressor shut-off/ARF |
Y22 | Electromagnetic actuator, electronic idle speed control |
Y27 | Change-over valve AGR |
Y28 | Change-over valve pressure control flap |
a | Ventilation to vehicle interior |
c | Remaining users |
1 | Injection pump |
2 | Governor |
5 | ADA unit |
6 | Vacuum unit (stop) |
60 | ARF valve |
61a | Choke blue |
61b | Choke |
62 | Filter |
65 | Vacuum control valve |
67 | Vacuum pump |
72 | Damper |
94 | Air guide housing |
100 | Vacuum unit/Vacuum pressure control flap |
105 | Intake pipe |
110 | Exhaust manifold |
120 | Exhaust gas recirculation line |
136 | Starter ring gear |
180 | Thermovalve opens at 40 °C (black) |
Engine 603 with manual transmission model year 1991 and code 62/0 as of 06/90
As of model year 1992 all versions.
Function diagram exhaust gas recirculation
B11/7 | Temperature sensor (automatic climate control) |
L3 | Speed sensor starter ring gear |
N6 | Compressor shut-off control unit |
N8 | Idle speed control unit |
N37/2 | Exhaust gas recirculation control unit ARF + II (11 pole) |
S25/7 | Temperature switch 25 °C exhaust gas recirculation |
S25/9 | Temperature switch 97 °C exhaust gas recirculation |
S27/6 | Microswitch compressor shut-off/ARF |
Y22 | Electromagnetic actuator, electronic idle speed control |
Y27 | Change-over valve EGR |
Y28 | Change-over valve pressure control flap |
a | Ventilation to vehicle interior |
c | Remaining users |
d | Vacuum unit automatic transmission |
Vacuum connections on vacuum transducer | |
VAC | Vacuum from vacuum pump |
VCV | To vacuum control valve |
ATM | Ventilation to vehicle interior |
EGR | Exhaust gas recirculation to exhaust gas recirculation valve |
1 | Injection pump |
2 | Governor |
5 | ADA unit |
6 | Vacuum unit (stop) |
60 | ARF valve |
61a | Choke blue |
61b | Choke |
62 | Filter |
65 | Vacuum control valve |
67 | Vacuum pump |
72 | Damper |
94 | Air guide housing |
100 | Vacuum unit/Vacuum pressure control flap |
105 | Intake pipe |
110 | Exhaust manifold |
120 | Exhaust gas recirculation line |
123 | Vacuum transducer |
136 | Starter ring gear |
180 | Thermovalve opens at 40 °C (black) |
224 | Accelerator pedal |
B11/1 | Coolant temperature sensor, electronic idle speed control (ELR) |
Engine 601 with manual transmission model 124 as of 02/93, model 202 as of 06/93
Function diagram exhaust gas recirculation
136 | Flywheel |
224 | Accelerator pedal |
B11/8 | Double temperature sensor coolant/preglow system |
L3 | Speed sensor |
N14 | Preglow time relay |
N22 | AC compressor cut-off control unit |
N37 | Exhaust gas recirculation (ARF) control unit |
S27/6 | Microswitch |
Y27 | Exhaust gas recirculation (ARF) switch-over valve |
Y28 | Pressure control flap switch-over valve |
a | Fresh air to vehicle interior |
c | Other consumers |
d | Vacuum unit, automatic transmission |
1 | Injection pump |
4 | PLA unit |
6 | Vacuum unit (stop) |
60 | Exhaust gas recirculation valve |
62b | Throttle with filter |
65 | Vacuum control valve |
67 | Vacuum pump |
99 | Pressure control flap |
100 | Vacuum unit, pressure control flap |
105 | Intake manifold |
105a | Pressure control flap housing |
105b | Intake air connecion line |
110 | Exhaust manifold |
128a | Thermovalve closes at 30 °C |
Engine 601 with automatic transmission model 124 as of 02/93, model 202 as of 06/93
Function diagram exhaust gas recirculation
128a | Thermovalve closes at 30 °C |
136 | Flywheel |
224 | Accelerator pedal |
B11/8 | Double temperature sensor coolant/preglow system |
L3 | Speed sensor |
N14 | Preglow time relay |
N22 | AC compressor cut-off control unit |
N37 | Exhaust gas recirculation (ARF) control unit |
S27/6 | Microswitch |
Y27 | Exhaust gas recirculation (ARF) switch-over valve |
Y28 | Pressure control flap switch-over valve |
Vacuum connections at vacuum transducer | |
VAC | Vacuum from vacuum pump |
VCV | To vacuum control valve |
ATM | Fresh air to vehicle interior |
EGR | Exhaust gas recirculation to exhaust gas recirculation valve |
1 | Injection pump |
4 | PLA unit |
6 | Vacuum unit (stop) |
60 | Exhaust gas recirculation valve |
62b | Throttle with filter |
65 | Vacuum control valve |
67 | Vacuum pump |
99 | Pressure control flap |
100 | Vacuum unit, pressure control flap |
105 | Intake manifold |
105a | Pressure control flap housing |
a | Air admission |
b | Ancillary consumers |
c | Key-operated engine stop |
d | Modulating pressure |
105b | Intake air connection line |
110 | Exhaust manifold |
123 | Exhaust gas recirculation vacuum transducer |
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