Page 611 of 1463
M162 ENGINE CONTROLS 1F1-41
Application
Pin No.Description
-
Starter motor TM.50
-
-
Electronic ground
-
-
-
Lambda probe 1 heating
Power ground TM.31
V-BATTERY TM.87
V-BATTERY TM.30
Immobilizer crypto read
Immobilizer crypto write
-
Lambda probe 1 ground
Lambda probe 1 signal
-
-
-
Brake switch
-
-
-
-
-
Air conditioning clutch relay
-
-
-1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30-
TM.50
-
-
GND
-
-
-
LSH1
TM.31
TM.87
TM.30
WFS I/O
WFS O
-
GND
LS1
-
-
-
BRS
-
-
-
-
-
KLIKU
-
-
--
l
-
-
l
-
-
-
l
l
l
l
l
l
-
l
l
-
-
-
¡
-
-
-
-
-
l
-
-
--
l
-
-
l
-
-
-
l
l
l
l
l
l
-
l
l
-
-
-
¡
-
-
-
-
-
l
-
-
-
l: Standard, ¡: OptionRemarks
AbbreviationE32 ENG,
5speed M/T E32 ENG,
4speed A/T
(BTRA)
Page 612 of 1463
1F1-42 M162 ENGINE CONTROLS
Pin No.Description
Pedal potentiometer 1 ground
Pedal potentiometer 1 supply
Fuel pump relay
Tank purge valve
Engine fan
-
CAN-Low
CAN-High
-
-
-
-
Clutch switch
Air conditioning
Electronic traction signal(ABD)
-
Pedal potentiometer 1 signal
Pedal potentiometer 2 signal
Brake light switch
Pedal potentiometer 2 ground
Pedal potentiometer 2 supply
Cruise accelerate/Set
Cruise resume
Cruise decelerate/Set
Cruise safety contact switch
-
Cruise off switch
Diagnostics(K-line)
Vehicle speed signal
Engine speed signal31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60GND
SP1+5V
KP
TEV
ML
-
CAN L
CAN H
-
-
-
-
KPL
KLIMA
ETS
-
SP1S
SP2S
BLS
GND
SP2+2.5V
S+B
WA
S-B
KSK
-
AUS
DIAG
V-SIG
TN-SIGl
l
l
l
l
-
l
l
-
-
-
-
¡
l
¡
-
l
l
¡
l
l
¡
¡
¡
¡
-
¡
l
l
ll
l
l
l
l
-
l
l
-
-
-
-
¡
l
¡
-
l
l
¡
l
l
¡
¡
¡
¡
-
¡
l
l
l
Remarks
AbbreviationE32 ENG,
5speed M/T E32 ENG,
4speed A/T
(BTRA)
Page 632 of 1463

1F1-62 M162 ENGINE CONTROLS
PURGE SWITCHOVER VALVE
1 Purge Switchover Valve
2 Line to Engine
3 Line to Canister
4 Canister
Functions
The fuel vaporization control system is installed to inhibit the
fuel vaporized gas from discharging into the atmosphere. The
fuel vaporized gas that is accumulated in the canister abstracts
through the purge switchover valve purification during the
engine combustion (except the decreasing mode) and coolant
temperature of over 80°C. For this reason, the ECU transacts
the engine speed, air inflow quantity, coolant temperature, and
intake temperature.
The purge switchover valve is activated by the ECU frequency
according with the engine rotating speed to adjust the
purification rate. The purification rate is determined by the
continuous valve opening interval.
The purge switchover valve is activated by the ECU for the
following conditions :
lCoolant temperature of over 80°C
lEngine speed of over 1000rpm
l2 Minutes after starting
lWhen the fuel cut-off mode is not activated
Page 650 of 1463

SECTION 1F2
M161 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 . . . . . . . . . . . . . . . . . . . . . . . 1F2-2
Fastener Tightening Specifications . . . . . . . . 1F2-2
Special Tools . . . . . . . . . . . . . . . . . . . . . . . 1F2-3
Special Tools Table . . . . . . . . . . . . . . . . . . . . 1F2-3
Schematic and Routing Diagrams . . . . . . . 1F2-4
E23 ECU (MSE) . . . . . . . . . . . . . . . . . . . . . . 1F2-4
E23 ECU (HFM) . . . . . . . . . . . . . . . . . . . . . . 1F2-5
Diagnosis . . . . . . . . . . . . . . . . . . . . . . . . . . 1F2-6
Self Diagnosis Socket Pin Numbers and
Descriptions . . . . . . . . . . . . . . . . . . . . . . . . 1F2-6
Self Diagnosis Failure Code (for E23 ENG) . 1F2-7
Test Box Connection . . . . . . . . . . . . . . . . . . 1F2-10
Fuel Injection System Test . . . . . . . . . . . . . 1F2-11
Ignition System Test . . . . . . . . . . . . . . . . . . 1F2-20
Idling Control and Electronic Pedal
System Test . . . . . . . . . . . . . . . . . . . . . . . 1F2-25
Air Conditioner Control System Test . . . . . . 1F2-27
Fuel Pressure and Internal Leakage Test . . 1F2-28
Fuel Pump Test . . . . . . . . . . . . . . . . . . . . . . 1F2-30Injector Test . . . . . . . . . . . . . . . . . . . . . . . . 1F2-32
Maintenance and Repair . . . . . . . . . . . . . 1F2-34
On-Vehicle Service . . . . . . . . . . . . . . . . . . . . 1F2-34
ECU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1F2-34
Fuel Pressure Regulator . . . . . . . . . . . . . . 1F2-45
Fuel Distributor . . . . . . . . . . . . . . . . . . . . . . 1F2-49
Injector . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1F2-54
Fuel Filter . . . . . . . . . . . . . . . . . . . . . . . . . . 1F2-57
Fuel Pump . . . . . . . . . . . . . . . . . . . . . . . . . 1F2-58
Purge Switchover Valve . . . . . . . . . . . . . . . 1F2-62
Vacuum System . . . . . . . . . . . . . . . . . . . . . 1F2-64
Crankshaft Position Sensor . . . . . . . . . . . . 1F2-66
Camshaft Position Sensor . . . . . . . . . . . . . 1F2-68
Hot Film Air Mass (HFM) Sensor . . . . . . . . . 1F2-70
Oxygen Sensor . . . . . . . . . . . . . . . . . . . . . . 1F2-73
Knock Sensor . . . . . . . . . . . . . . . . . . . . . . . 1F2-75
Coolant Temperature Sensor . . . . . . . . . . . 1F2-76
Accelerator Pedal Module . . . . . . . . . . . . . . 1F2-79
Page 665 of 1463

1F2-16 M161 ENGINE CONTROLS
Failure
codeItem
Checking method Test
stepRequirement
Specified
valuePossible cause
·Ignition:OFF (injector
temperature is 20°C)14 - 17 W - Internal
resistance
(No.3
injector)65 11
Þ 14.0· ·· ·
· No.4 cylinder
injector:
- Operating &
injection time· When the coolant
temperature is
approx.20°C:
- Engine:in cranking8.0 ms· Cable
· ECU
· No.4 Injector
· Coolant
temperature sensor
· Oxygen sensor
· Intake air
temperature sensor 78,
79,
66 11
· When the coolant
temperature is
approx.80°C:
- Engine:at idling
speed
- Engine:at sharp
acceleration(full
throttle)
(refer to figure 3
and 4)approx.
2.7 - 5.0ms
approx.14ms
·Ignition:OFF
(injector temperature
is 20°C)14 - 17 W - Internal
resistance
(No.4
injector)66 11
226,
227,Þ 15.0· ·· ·
· Camshaft
actuator:
Current
consumption
12
Camshaft actuator1 - 1.5 A· ECU
· Þ 15.1
· Þ 16.0 ·
Engine : using a test
cable(102 589 63 00)
in idling, measure the
current consumption
with below condition
- Coolant temperature
: above 70°C
- Engine rpm :
increase up to 2000
rpm
Page 676 of 1463
M161 ENGINE CONTROLS 1F2-27
AIR CONDITIONER CONTROL SYSTEM TEST
Þ 2.0· Engine:In idling
· Air conditioner
switch:ON/OFF
Air conditioner
switch:OFF
Air conditioner
switch:ON
Coolant temperature:
above 150 °C 10 35
11 - 14 V
11 - 14 V
< 1 V
· ·· ·
· Condenser
fan(HI)
control:
Failure
codeItem
Þ 1.0
Checking method
· Engine:In idling
· Air conditioner
switch:ON/OFF
Air conditioner
switch:OFF
Air conditioner
switch:ON
Te s t
stepRequirement
Specified
value
10 44
< 1 V
· ·· ·
· Air
conditioner
signal:
- Input signal
(input signal
from thermo
amplifier)44,
45,
11 - 14 V· Þ 5.1
· Cable
· Thermo amp
· Auto amp
· Dual pressure
switch
· Air conditioner
control panel
Þ 1.1
· Engine:In idling
· Air conditioner
switch:ON/OFF
Air conditioner
switch:OFF
Air conditioner
switch:ON 10 27
< 1 V
· ·· ·
· Air
conditioner
compressor:
- Output
signal
11 - 14 V
Page 686 of 1463
M161 ENGINE CONTROLS 1F2-37
Pin No.Abbreviation Description
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60BRS
-
-
-
-
-
KLIKU
-
-
-
GND
SP1+5V
KP
TEV
ML
-
CAN L
CAN H
-
-
-
-
KPI
KLIMA
ETS
-
SP1S
SP2S
BLS
GND
SP2+2.5V
S+B
WA
S-B
KSK
-
AUS
DIAG
V-SIG
TN-SIG Brake switch
-
-
-
-
-
Air conditioning clutch relay
-
-
-
Pedal potentiometer 1 ground
Pedal potentiometer 1 supply
Fuel pump relay
Tank purge valve
Engine fan(High)
-
CAN-Low
CAN-High
-
-
-
-
-
Air conditioning
Electronic traction signal
-
Pedal potentiometer 1 signal
Pedal potentiometer 2 signal
Brake light switch
Pedal potentiometer 2 ground
Pedal potentiometer 2 supply
Cruise accelerate/Set
Cruise resume
Cruise decelerate/Set
Cruise safety contact switch
-
Cruise off switch
Diagnostics(K-Line)
Vehicle speed signal
Engine speed signal
Page 689 of 1463
1F2-40 M161 ENGINE CONTROLS
Application
Pin No.Abbreviation Description
-
Starter motor TM.50
-
-
Electronic ground
-
Lambda probe 2 heating
-
Lambda probe 1 heating
Power ground TM.31
V-BATTERY TM.87
V-BATTERY TM.30
Immobilizer crypto read
Immobilizer crypto write
-
Lambda probe 1 ground
Lambda probe 1 signal
-
-
-
Brake switch
-
-
-
-
-
Air conditioning clutch relay
-
-
-1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30-
TM.50
-
-
GND
-
LSH2
-
LSH1
TM.31
TM.87
TM.30
WFS I/O
WFS O
-
GND
LS1
-
-
-
BRS
-
-
-
-
-
KLIKU
-
-
--
l
-
-
l
-
-
-
l
l
l
l
l
l
-
l
l
-
-
-
¡
-
-
-
-
-
l
-
-
--
l
-
-
l
-
-
-
l
l
l
l
l
l
-
l
l
-
-
-
¡
-
-
-
-
-
l
-
-
-
l: Standard, ¡: OptionE23 ENG,
4speed A/T E23 ENG,
5speed A/T