Page 569 of 1463
OM600 ENGINE ELECTRICAL 1E3-7
Removal & Installation Procedure
1. Disconnect the negative terminal of the battery.
2. Disconnect the plug connection (5).
3. OM 662 Engine
Align the groove of cooling fan with bolt (2) (arrow).
4. Remove the bolts (2, 3) and take out the alternator.
5. Installation should follow the removal procedure in the
reverse order.
Tightening Torque 45 Nm
Page 570 of 1463
1E3-8 OM600 ENGINE ELECTRICAL
STARTER MOTOR
1 Starter Motor
2 Washer3 Nut .............................................................15Nm
4 Bolt............................................................48Nm
Removal & Installation Procedure
1. Disconnect the battery terminals.
2. Disconnect the starter motor cable harnesses.
3. Remove the bolts and then remove the starter motor.
4. Installation should follow the removal procedure in the
reverse order.
Page 571 of 1463

SECTION 1F1
M162 ENGINE CONTROLS
TABLE OF CONTENTS
CAUTION: Disconnect the negative battery cable before removing or installing any electrical unit or when a
tool or equipment could easily come in contact with exposed electrical terminals. Disconnecting this cable
will help prevent personal injury and damage to the vehicle. The ignition must also be in LOCK unless otherwise
noted.
Specifications . . . . . . . . . . . . . . . . . . . . . . . 1F1-2
Fastener Tightening Specifications . . . . . . . . 1F1-2
Special Tools . . . . . . . . . . . . . . . . . . . . . . . 1F1-3
Special Tools Table . . . . . . . . . . . . . . . . . . . . 1F1-3
Schematic and Routing Diagrams . . . . . . . 1F1-4
E32 ECU (HFM) . . . . . . . . . . . . . . . . . . . . . . 1F1-4
E32 ECU (MSE) . . . . . . . . . . . . . . . . . . . . . . 1F1-5
Diagnosis . . . . . . . . . . . . . . . . . . . . . . . . . . 1F1-6
Self Diagnosis Socket Pin Numbers and
Descriptions . . . . . . . . . . . . . . . . . . . . . . . . 1F1-6
Self Diagnosis Failure Code . . . . . . . . . . . . . 1F1-7
Test Box Connection . . . . . . . . . . . . . . . . . . 1F1-10
Fuel Injection System Test (MSE3.62) . . . . . 1F1-11
Ignition System Test . . . . . . . . . . . . . . . . . . 1F1-21
Idling Control and Electronic Pedal
System Test . . . . . . . . . . . . . . . . . . . . . . . 1F1-26
Air Conditioner Control System Test . . . . . . 1F1-28
Fuel Pressure and Internal Leakage Test . . 1F1-29
Fuel Pump Test . . . . . . . . . . . . . . . . . . . . . . 1F1-31Injector Test . . . . . . . . . . . . . . . . . . . . . . . . 1F1-33
Maintenance and Repair . . . . . . . . . . . . . 1F1-35
On-Vehicle Service . . . . . . . . . . . . . . . . . . . . 1F1-35
ECU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1F1-35
Fuel Pressure Regulator . . . . . . . . . . . . . . 1F1-46
Fuel Distributor . . . . . . . . . . . . . . . . . . . . . . 1F1-50
Injector . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1F1-54
Fuel Filter . . . . . . . . . . . . . . . . . . . . . . . . . . 1F1-57
Fuel Pump . . . . . . . . . . . . . . . . . . . . . . . . . 1F1-58
Purge Switchover Valve . . . . . . . . . . . . . . . 1F1-62
Vacuum System . . . . . . . . . . . . . . . . . . . . . 1F1-64
Crankshaft Position Sensor . . . . . . . . . . . . 1F1-65
Camshaft Position Sensor . . . . . . . . . . . . . 1F1-67
Hot Film Air Mass (HFM) Sensor . . . . . . . . . 1F1-69
Oxygen Sensor . . . . . . . . . . . . . . . . . . . . . . 1F1-72
Knock Sensor . . . . . . . . . . . . . . . . . . . . . . . 1F1-74
Coolant Temperature Sensor . . . . . . . . . . . 1F1-75
Accelerator Pedal Module . . . . . . . . . . . . . . 1F1-78
Page 576 of 1463
1F1-6 M162 ENGINE CONTROLS
DIAGNOSIS
SELF DIAGNOSIS SOCKET PIN NUMBERS AND DESCRIPTIONS
1 Ground
2 Ignition 1
3 Battery Power Supply (Fuse NO.17)
4 REKES :PIN 6
5 Engine Speed Signal :MSE PIN 60
6 TCCU(Part-time)
7 STICS(PIN 26)
8-
9-
10 Air Bag(PIN 20)11 Remote Engine Start Unit(PIN 10)
12 -
13 Brake System
(ABS 5.3:PIN 11, ABS/ABD 5.3:PIN 46)
14 MSE 3.62S/3.53S(ECU Data Output:PIN 58)
15 TOD(PIN 20)
1 6 Immobilizer
17 -
1 8 TCU(PIN 23)
19 -
2 0 K-LINE(ECS:PIN 23)
Page 577 of 1463

M162 ENGINE CONTROLS 1F1-7
41
44
45
56
57
58
59
60
62
64
65
66
67
71
72
73
74
75
76
77
78
79
80
81
82
83
86
87
89 00
01
02
03
04
05
08
09
10
11
17
18
19
20
21
23
24
25
26
27
29
30
31
34
35
40
Failure
codeDescription
Coolant temperature sensor open
Coolant temperature sensor short
Coolant temperature sensor signal failure
Intake temperature sensor open
Intake temperature sensor short
Intake temperature sensor signal failure
Low battery voltage
HFM sensor signal failure
HFM sensor signal failure(Low)
HFM sensor signal failure(High)
Crankshaft position sensor signal failure
(no engine revolution signal)
Crankshaft position sensor signal failure
(rpm > max. value)
No.1 cylinder recognition failure
Crankshaft position sensor signal failure
(gab recognition failure)
Transmission coding failure
CAN communication failure : ASR
-
Transponder signal failure
CAN communication failure : TCU(A/T only)
CAN communication failure : TOD(E32 only)
-
-
CAN communication failure :
communication initialization failure
Fuel pump relay short(PWR)
Fuel pump relay open/short(GND)
Purge valve short
Failure
codeDescription
Purge valve open/short
Condenser fan(HI) relay short(PWR)
Condenser fan(HI) relay short(GND)
No.1 knock sensor signal failure
No.2 knock sensor signal failure
No.1 cylinder synchronization failure
-
-
Cluster S/W defectave
No ignition voltage output(No.1 ignition coil)
No ignition voltage output(No.2 ignition coil)
No ignition voltage output(No.3 ignition coil)
Crankshaft position sensor adaptation failure
Start signal recognition failure
No.1 injector short(PWR)
No.1 injector open/short(GND)
No.2 injector short(PWR)
No.2 injector open/short(GND)
No.3 injector short(PWR)
No.3 injector open/short(GND)
No.4 injector short(PWR)
No.4 injector open/short(GND)
High oxygen sensor voltage
Low oxygen sensor amplifying voltage
Oxygen sensor operating failure
Not excessive lean indication in oxygen
sensor(during coasting)
Oxygen sensor heater short(PWR)
Oxygen sensor heater open/short(GND)
Low oxygen sensor voltage
SELF DIAGNOSIS FAILURE CODE
Page 581 of 1463
M162 ENGINE CONTROLS 1F1-11
FUEL INJECTION SYSTEM TEST (MSE3.62)
Failure
codeItem
Þ 1.0
Checking method
· Ignition:ON
Test
stepRequirementSpecified
valuePossible cause
10 1211 -14V
· ·· ·
· ECU:power
supply
- terminal
30(TM.30)
Þ 2.2· ·· ·
· Power
supply:
- terminal
87(TM.87)· Ignition:ON· Power supply cable
· OVPR 08,
·Þ 1.1
·Þ 1.2
Þ 1.1
· Ignition:ON
10 211 -14V· ·· ·
· Ground
cable:
- Battery
ground· Ground cable
· Ground conditionDiagnosis
socket
69 2
Diagnosis
socket
Þ 1.2· Ignition:ON
11211 -14V· ·· ·
· Power
supply:
- terminal
30(TM.30)· Power supply cable
Diagnosis
socket
Þ 2.0· Ignition:ON
51111 -14V· ·· ·
· ECU:power
supply
- terminal
87(TM.87)08,·Þ 1.1
·Þ 2.1
Þ 2.1
· Ignition:ON 11 -14V· ·· ·
· Ground
cable
- Electronic
ground· Ground cable
52
Diagnosis
socket
111
Diagnosis
socket· Ignition:OFF
11 -14V
< 1V
Þ 3.0
· Engine:in Cranking
52· Cable
· Ignition switch 11 -14
(during engine
cranking)
· ·· ·
· Start signal:
- terminal
50(TM.50)
Page 591 of 1463
M162 ENGINE CONTROLS 1F1-21
Failure
codeItemChecking method Test
stepRequirementSpecified
valuePossible cause
10 1211 - 14V
· ·· ·
· ECU:power
supply
- terminal
30(TM.30)
Þ 2.2· ·· ·
· Power
supply:
- terminal
87(TM.87)· Ignition:ON· Power supply cable
· OVPR
IGNITION SYSTEM TEST
08,· Þ 1.1
· Þ 1.2
Þ 1.1
· Ignition:ON
10 211 - 14V· ·· ·
· Ground
cable:
- Battery
ground· Ground cable
· Ground condition
(figure 1)Diagnosis
socket
69 2
Diagnosis
socket
Þ 1.2· Ignition:ON
11211 - 14V· ·· ·
· Power
supply:
- terminal
30(TM.30)· Power supply cable
· Fuse No.8Diagnosis
socket
Þ 2.0· Ignition:ON
51111 -14V· ·· ·
· ECU:power
supply
- terminal
87(TM.87)08,· Þ 2.1
· Þ 2.2
Þ 2.1
· Ignition:ON 11 - 14V· ·· ·
· Ground
cable
- Electronic
ground· Ground cable
52
Diagnosis
socket
111
Diagnosis
socket
· Ignition:OFF
11 - 14V
< 1V
Þ 3.0· Ignition:ON
6911 - 14 V· ·· ·
· Ignition
coil(T1/1)
- No.2,5
Cylinder64,· Cable
· Ignition coil(T1/1)
· Fuse No.17
· Engine:in cranking > 10 V
Page 606 of 1463
1F1-36 M162 ENGINE CONTROLS
Location
Engine ECU is located at the inside of cowl side trim in right
bottom of instrument panel of passenger side.
Removal & Installation Procedure
1. Turn the ignition switch to "OFF" position.
2. Disconnect the battery negative cable
3. Remove the cowl side trim form passenger side.
4. Unscrew four securing nuts for ECU from mounting bracket.
Installation Notice
5. Pulling out the ECU from bracket.
6. Disconnect the vehicle side coupling(B).
7. Installation should follow the removal procedure in the
reverse order.
Tightening Torque 9 - 11 Nm