Page 736 of 1463
OM600 ENGINE CONTROLS 1F3-7
Vacuum 500 mbar
Lines and connections leaking.
Faulty PLA vacuum unit.
Test step 1
Connect vacuum pump (14) with Y adapter to PLA
vacuum unit (5). Run engine at idle speed.
YES
NO
(Remove the connection hose from vacuum pump)
Connect vacuum pump (14) direct to PLA vacuum unit
(5) and pressurize with vacuum.
Vacuum is built up and idle speed increases approx.
150-200 rpm
YESNO
Faulty PLA vacuum unit
(Coolant Temperature 30°C)
Stop the engine Seal the air admission line with plug.
Connect the vacuum pump to line to thermovalve and
pressurize the line with vacuum.
Vacuum is built up.
YESNO
Lines and connectors leaking.
Faulty thermovalve.
= >
Page 745 of 1463
1F3-16 OM600 ENGINE CONTROLS
Idle Speed
750 - 850 rpm
720 - 820 rpm Engine
OM661LA Engine
OM662LA Engine
Tools Required
667 589 00 21 00 TDC Pulse Generato
Commercial Tool
IDLE SPEED ADJUSTMENT
Service Data
e.g. Bosch, MOT 001.03
Sun, DIT 9000 Digital Tester
Adjustment Procedure
1. Connect the digital tester (1) and TDC pulse sender unit
(11).
2. Run the engine and warm up the coolant to 60~80°C.
TDC pulse generator 667 589 02 21 00
3. Disconnect the vacuum hose (4) from the PLA unit to check
idle speed with tester.
4. Check idle speed with tester.
Notice
To adjust idle speed, loosen the locking nut (6) of PLA unit.
OM 661LA Engine750 - 850rpm
OM 662LA Engine
720 - 820rpm
Page 1376 of 1463
INSTRUMENTATION/DRIVER INFORMATION 9E-3
COMBINATION METER
COMPONENT LOCATOR
1. Speedometer
2. Odometer
3. Trip odometer
4. Tachometer
5. Coolant temperature gauge
6. Fuel gauge
7. Low fuel level warning light
8. Turn signal indicator (left)
9. Turn signal indicator (right)
10. Outside rearview mirror & tailgate heating switch
11. Reset button
12. Auto shift indicator*
13. Door open warning light
14. TCS indicator (equipped with ABD)*
21. ABS warning light*22. EBD warning light*
23. ECS / SPORT warning light*
24. 4 - wheel warning light*
25. 4 - wheel high indicator
26. 4 - wheel low indicator
27. WINTER indicator
28. POWER indicator
29. High beam indicator
15. Alternator warning light
16. Engine oil pressure warning light
17. Brake system warning light
18. Glow indicator light (For Diesel engine)
19. Airbag warning light*
20. Seat belt reminder