0015 - Function of the exhaust gas recirculation B. Location of components - Models 124, 201, 202 (note deviations for off-road vehicles) Engines 601, 602.91, 603.91 · ra0701601b015x · Mercedes-Benz WIS

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 Std with code 62/0 as of 06/90	     1992 Std with code 62/0 as of 06/92
601.913			Std with code 62/0 as of 06/93
602.91	     1991 Std with code 62/0 as of 06/90	     1992 Std with code 62/0 as of 06/92
603.91	     1991 Std with code 62/0 as of 06/90	     1992 Std with code 62/0 as of 06/92

B. Location of components model 124, 201, 202

Electrical components

0015 - Function of the exhaust gas recirculation
B. Location of components - Models 124, 201, 202
(note deviations for off-road vehicles) Engines 601, 602.91, 603.91

Model 124 illustrated

S25/1

Temperature switch 100 °C

S25/7

S25/9

Temperature switch 25 °C

Temperature switch 97 °C

S27/6

Microswitch compressor shut-off/ARF

L3	Starter ring gear speed sensor
L3x	Connector starter ring gear speed sensor
N37/2	Control unit exhaust gas recirculation

Pneumatic components

Model 124 illustrated

5	ADA unit
60	EGR valve
65	Vacuum control valve

100	Vacuum unit vacuum control flap
123	Vacuum transducer
Y27	Change-over valve exhaust gas recirculation
Y28	Change-over valve vacuum control flap

Model 202

123	Vacuum transducer (only with automatic transmission)
K1/1	Overvoltage protection
L3	Speed sensor
L3x1	Plug connection, speed sensor
N8/2	Anti-jerk control (ARA) unit
N37	Exhaust gas recirculation (ARF) control unit

X/11/4	Diagnosis socket
X/26/2	Plug connection
Y22/3	Anti-jerk control (ARA) actuator
Y/27	Exhaust gas recirculation (ARF) switch-over valve
Y/28	Pressure control flap switch-over valve

0015 - Function of the exhaust gas recirculation B. Location of components - Models 124, 201, 202 (note deviations for off-road vehicles) Engines 601, 602.91, 603.91

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