Testing exhaust gas recirculation - ra0701601a195x (0195-A)

WARNING: This page does not describe the selected car, but rather 42 other vehicles, including the 1999 Mercedes-Benz S600, 1999 Mercedes-Benz S500, 1999 Mercedes-Benz S420, 1999 Mercedes-Benz S320, and 1999 Mercedes-Benz CL600. However, it is still accessible from the selected car via links, so may be relevant.

Engines 601.911/912 up to 01/93, 602, 603

Engine 601.911/912 up to 01/93, Engine 602, 603
Function diagram exhaust gas recirculation

Fig 1: Function Diagram Exhaust Gas Recirculation
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Special tool

Fig 2: Identifying Special Tools

G05436836

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Fig 3: Identifying Special Tools (603 589 00 21 00 07)

G05436837

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Fig 4: Identifying Special Tools (601 589 04 21 00 07)

G05436838

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Fig 5: Identifying Special Tools (201 589 13 21 00 00 42 80)

G05436839

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Fig 6: Identifying Special Tools (201 589 00 99 00 15 54)

G05436840

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

COMMERCIALLY AVAILABLE TOOLS

Digital tester	e. g. Bosch, MOT 001.03
Digital tester	e. g. Sun, DIT 9000
Multimeter	e. g. Sun, DMM-5

NOTE: Use Y-distributor, part no. 117 078 01 45 for vacuum tester.

Test condition

Coolant temperature 60-80 °C.

Function test

Fig 7: ARF Valve Function Chart

G05436841

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Engine 603.91

350 ± 5

Fig 8: Vacuum Control Function Chart

G05436842

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Fig 9: ARF Valve Function Chart

G05436843

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Testing components

Fig 10: ARF Valve Function Chart

G05436844

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Fig 11: Vacuum Control Valve Function Chart

G05436845

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Fig 12: Change Over Valve Function Chart

G05436846

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Fig 13: Change Over Valve Function Chart

G05436847

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Fig 14: Speed Signal Flow Chart

G05436848

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Fig 15: Temperature Switch Activation Flow Chart

G05436849

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Fig 16: Temperature Switch Activation Flow Chart

G05436850

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Fig 17: Microswitch Function Flow Chart

G05436851

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Fig 18: Speed Shut-Off Flow Chart

G05436852

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.