Page 406 of 1574
OM600 ENGINE MECHANICAL 1B3-141
4. Remove the bolt and then remove the camshaft sprocket.Notice During removal, be careful not to drop the sprocket with chain. Remove the chain carefully and then pull out thesprocket.
5. Remove the chain tensioner.
6. Remove the camshaft bearing cap bolts according to the removal order. Notice Remove the camshaft bearing cap bolts of 1(dark arrow) first and then remove the bolts of 2 (light arrow) one revolution in stages until the counter-pressure is released. In order to avoid damaging the camshaft, it is essential toadhere to the removal order for the camshaft bearing caps.
OM 662LA
OM 661LA
Page 408 of 1574
OM600 ENGINE MECHANICAL 1B3-143
5. Tighten the camshaft bearing cap bolts acccording toinstallation order.
6. Install the camshaft sprocket to be aligned the markings of the camshaft / camshaft bearing cap (arrow). Notice Align the alignment marks on the timing chain and sprocket.
Tightening Torque 25 Nm
Notice
Tighten the No. 1 bolts (light arrow) by one revolution in stages first and then tighten the No.2 bolts (dark arrow).
OM 661LA
OM 662LA
7. Tighten the camshaft sprocket bolt.
Tightening Torque 25Nm + 90 °
Page 528 of 1574

1E3-4 OM600 ENGINE ELECTRICAL
Preheating System Operation
1. Preheating before start.Preheating time is different by coolant temperature and it is on until the glow indicator light goes off.
2. Preheating after start. Preheating continues for max. 60 seconds to rise in characteristic of warming-up on engine after starting too.
3. Monitoring on glow plug. Glow plugs are monitored by low current by the microprocessor in control relay respectively while running theengine. If glow indicator comes on after starting for about one minute,
it indicates on or several plugs are faulty.
Possible Cause
- One or several glow are faulty
Problem
Glow indicator does not come on in preheating time and comes on after starting the engine. Glow indicator does not come on while preheating and after starting engine. Glow indicator does not come on and engine
’s
starting is difficult or does not start at all. Glow indicator comes on after starting for about one minute.1 2 3 4 - Faulty glow indicator
- Faulty circuit of glow indicator
- Faulty control relay
- Circuits short in one or several glow plugs
- Faulty preheating circuits
- Faulty control relay
- One or several glow plugs are faulty
Page 570 of 1574
1F1-38 M162 ENGINE CONTROLS
Pin No.Abbreciation
Decription
21 222324252627282930313233343536373839404142434445464748495051525354555657585960 BRS
-----
KLIKU ---
GND
SP1+5V KP
TEV ML -
CAN L
CAN H -- - -
KPI
KLIMAKLIMA -
SP1SSP2S BLS
GND
SP2+2.5V S+BWA
S-B
KSK -
AUS
DIAG
V-SIG
TN-SIG
Brake switch-----Air conditioning clutch relay---Pedal potentiometer 1 groundPedal potentiometer 1 supplyFuel pump relay
Tank purge valveEngine fan (H1)-CAN-LowCAN-High-- - -Clutch switchAir conditioningElectronic traction signal-Pedal potentiometer 1 signalPedal potentiometer 2 signalBrake light switchPedal potentiometer 2 groundPedal potentiometer 2 supplyCruise accelerate/SetCruise resumeCruise decelerate/SetCruise safety contact switch-Cruise off switchDiagnostics (k-line)
Vehicle speed signalEngine speed signal
Page 574 of 1574
1F1-42 M162 ENGINE CONTROLS
Pin No.Description
Pedal potentiometer 1 ground Pedal potentiometer 1 supplyFuel pump relay
Tank purge valve Engine fan -CAN-LowCAN-High - - --Clutch switchAir conditioning Electronic traction signal(ABD) -Pedal potentiometer 1 signalPedal potentiometer 2 signalBrake light switchPedal potentiometer 2 ground Pedal potentiometer 2 supply Cruise accelerate/SetCruise resumeCruise decelerate/SetCruise safety contact switch - Cruise off switchDiagnostics(K-line)
Vehicle speed signalEngine speed signal31 323334 35 363738 39 40 41424344 45 4647484950 51 52535455 56 57585960GND
SP1+5V KP
TEV ML
-
CAN L
CAN H
- - --
KPL
KLIMA ETS
-
SP1SSP2S BLS
GND
SP2+2.5V
S+BWA
S-B
KSK -
AUS
DIAG
V-SIG
TN-SIG
-
- - --
-
-
-
- - --
-
-
Remarks
Abbreviation E32 ENG,
5speed M/T
E32 ENG,
4speed A/T (BTRA)
Page 579 of 1574
M162 ENGINE CONTROLS 1F1-47
3. Disconnect the vacuum hose.
4. Disconnect the circlip and remove the fuel pressureregulator.
5. Apply the oil to O-ring lightly and then replace it.
6. Installation should follow the removal procedure in the reverse order.
7. Check for fuel pressure and internal leaks by operating the engine.
2. Discharge the pressure in fuel supply system by pressing
the service valve.
Removal & Installation Procedure
1. Remove the fuel pressure test connector.
Page 611 of 1574
M162 ENGINE CONTROLS 1F1-79
Accelerator Pedal Sensor Connector(Sensor Side)
Potentiometer 1.Pin no. 3 :Red
Pin no. 1 :YellowPin no. 5 :Brown
Potentiometer 2. Pin no. 6 :VioletPin no. 4 :GreenPin no. 2 :White
Accelerator Pedal Sensor Connector(Vehicle Side)
Potentiometer 1.Pin no. 3 :Red-Black Pin no. 1 :Blue-Green
Pin no. 5 :Yellow-Green
Potentiometer 2. Pin no. 6 :GreenPin no. 4 :Blue-RedPin no. 2 :LightGreen
Function Potentiometer 1, Power Supply(+)
Potentiometer 1, Signal
Potentiometer 2, Ground
Potentiometer 2, Power Supply(+)
Pin no. 3 Pin no. 1 Pin no. 5 Pin no. 6
Pin no. 4 Pin no. 2Potentiometer 2, SignalPotentiometer 2, Ground
Circuit Diagram
Potentiometer 1. Potentiometer 2.
Page 648 of 1574
1F3-38 OM600 ENGINE CONTROLS
Tools Required 617 589 08 21 00 Position Sensor
Test Procedure
1. Remove the screw plug (5) and seal (4) and collect oil in a suitable vessel.
2. Install the position sensor (1) into the governor housing of
the injection pump to be the guide pin of the position sensor facing up.
3. Connect the battery terminal of position sensor (1) to positive terminal (+) of battery.
Position Sensor 617 589 08 21 00
4. Rotate the crankshaft by hand (in direction of engine rotation) until the lamp ‘B’ lights up. Rotate the crankshaft carefully
further until both lamps ‘A and B ’ come on. In this position,
check the Rl value on the crankshaft vibration damper. Notice If only lamp ‘A’ lights up, repeat the test and if out of
specification, adjust start of delivery.
Specification A TDC 14° - 16 °