2003 SSANGYONG MUSSO Service Manual

M162 ENGINE CONTROLS 1F1-13
Failurecode ItemChecking method
Te s t
stepRequirementSpecified value Possible cause
6.1 
Ignition:ON 0.1 - 0.3A
Cable
 Fuel pump relay
 ECU



Fuel pump
relay: - Current consumption
00, 01, 02, 06,
7.0 


Coolant
temperature sensor:- Voltage 79 78
Ignition:ON °CV
20 3.57
80 1.22
100 0.78 
7.1
 ECU
± 5%

6.0 
Ignition:ON
(Fuel pump relay will operate for 1 - 2seconds when theignition switch isturned to "ON" afterstopping the engine)
 Engine:cranking
33 11

Cable
 Fuel pump relay



Fuel pump
relay:- Operation
34, 11 - 14V
(approx.1- 2sec.)
11 - 14V
(Cranking or driving)
53 3
7.1 
Ignition:OFF
(Remove the No.2 coupling from ECU)
79 78 
7.2
 Cable



Coolant
temperature sensor:- Resistance & cable °
C
20 2500 80 322
100 185
± 5%
7.2 


Coolant
temperature sensor:- Resistance Coolant temperature
sensor:
14 Remove the
connector from coolant temperaturesensor and measurethe resistancebetween No.1 andNo.2 pin withmultimeter. 
refer to
specifiedresistancevalue of 7.1 
Coolant
temperaturesensor
34, 35,

1F1-14 M162 ENGINE CONTROLS
Failurecode ItemChecking method
Test
stepRequirementSpecified value Possible cause
9.0 
Keep the engine run
above 2 minutes in over 80 °C of coolant
temperature. 6.0 - 7.0 V
 ECU
 Cable
 Oxygen sensor



Oxygen
sensor:- Signal
80, 81,82,83,89, 56
0
8.0 
Engine:in cranking or
idle
56 0 
Cable
 ECU



ECU:
- RPM signal output32, 33, refer to figure
2
10.0 
Keep the engine run
above 2 minutes in over 80 °C of coolant
temperature.



Oxygen
sensor:- Heating functionoperated
11.0 


No.1 cylinderinjector:- Operating &
injectiontime 
When the coolant
temperature isapprox. 20 °C:
- Engine:in cranking 8.0 ms
Cable
 ECU
 No.1 Injector
 Coolant
temperature sensor
 Oxygen sensor
 Intake air
temperature sensor
- Voltage 
Engine:in cranking
or idle (above 5V in idling)
16 17
59
91 1

Ignition:ON 11 - 14 V

ECU
 Cable
 Oxygen sensor
- Current consumption 0.2 - 2.0 A
72, 73, 63 11
 When the coolant
temperature is approx. 80 °C:
- Engine:at idling speed
- Engine:at sharp acceleration(fullthrottle)
(refer to figure 3 and 4) approx.
2.7 - 5.0ms approx.14ms
There will be a
voltage
fluctuation in the range of - 0.2 -1.0V
85, 86,87,

M162 ENGINE CONTROLS 1F1-15
Failurecode ItemChecking method
Test stepRequirementSpecified
value Possible cause

Ignition:OFF(injector
temperature is 20 °C) 14 - 17

- Internal
resistance (No.1 injector) 63 11

12.0 


No.2 cylinderinjector:- Operating &
injectiontime 
When the coolant
temperature isapprox. 20 °C:
- Engine:in cranking 8.0 ms
Cable
 ECU
 No.2 Injector
 Coolant
temperaturesensor
 Oxygen sensor
 Intake airtemperaturesensor
74, 75,
61 11
 When the coolant
temperature is approx. 80 °C:
- Engine:at idling speed
- Engine:at sharp acceleration(fullthrottle)
(refer to figure 3 and 4) approx.
2.7 - 5.0ms approx.14ms
 Ignition:OFF(injector
temperature is 20 °C) 14 - 17

- Internal
resistance (No.2injector) 61 11

13.0 


No.3 cylinderinjector:- Operating &
injectiontime 
When the coolant
temperature isapprox. 20 °C:
- Engine:in cranking 8.0 ms
Cable
 ECU
 No.3 Injector
 Coolant
temperature sensor
 Oxygen sensor
 Intake airtemperature sensor
76, 77,
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

1F1-16 M162 ENGINE CONTROLS
Failurecode ItemChecking method
Te s t
stepRequirementSpecified
value Possible cause

Ignition:OFF(injector
temperature is 20 °C) 14 - 17

- Internal
resistance (No.3injector) 66 11

14.0 


No.4
cylinder injector: - Operating & injectiontime 
When the coolant
temperature isapprox. 20 °C:
- Engine:in cranking 8.0 ms
Cable
 ECU
 No.4 Injector
 Coolant
temperature sensor
 Oxygen sensor
 Intake airtemperature sensor
78, 79,
62 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

- Internal
resistance (No.4 injector) 62 11
192, 193,
15.0 


No.5
cylinder injector:- Operating & injectiontime 
When the coolant
temperature isapprox. 20 °C:
- Engine:in cranking 8.0 ms

Cable
 ECU
 No.5 Injector
 Coolant
temperature sensor
 Oxygen sensor
 Intake airtemperature sensor
65 11

When the coolant
temperature is approx. 80 °C:
- Engine:at idling speed
- Engine:at sharp acceleration(fullthrottle)
(refer to figure 3 and 4) approx.
2.7 - 5.0ms approx.14ms

M162 ENGINE CONTROLS 1F1-17
Failurecode ItemChecking method
Test
stepRequirementSpecified value Possible cause

17.0 


Variable
intake air valve(resonanceflap switchvalve)- Operating 
Engine:in cranking/
below 3500rpm 
ECU
 Cable
 Variable intake air
valve< 1V
 Ignition:ON 0.4 - 0.6A
- Current
consumption
198, 199, 
Ignition:OFF(injector
temperature is 20 °C) 14 - 17

- Internal
resistance(No.5 injector) 65 11

16.0 


No.6 cylinderinjector:- Operating &
injectiontime 
When the coolant
temperature isapprox. 20 °C:
- Engine:in cranking 8.0 ms 
Cable
 ECU
 No.6 Injector
 Coolant
temperature sensor
 Oxygen sensor
 Intake air
temperature sensor
194, 195,
64 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

- Internal
resistance (No.6 injector) 64 11
97 11
69 97

Engine:rpm > above
3500rpm 11 - 15V



Camshaft actuator:Currentconsumption
12 Camshaft actuator
1 - 1.5 A

ECU
 18.1
 19.0
18.0
226, 227, 
Engine : in idling- Coolant temperature
: above 70 °C
- Engine rpm : increase up to 2000rpm

1F1-18 M162 ENGINE CONTROLS
Failurecode Item

18.1
Checking method
Test
stepRequirementSpecified
value Possible cause
73 2 8 - 12




Camshaft
actuator: Solenoidresistance
21.0 


Purge
control valve:- Vacuum control 
Engine:in idling/
normal operatingtemperature 
Vacuum line
 Purge control valve

Cable
 Camshaft actuator
Diagnosis socket
19.0
73 69 Engine is
unstable or stopped



Camshaft
actuator:MechanicalActuation
 Mechanical failure of
camshaft actuator
20.0 
Engine:in idling
34 11 The purge
control valve should be
operated after approx.
1minute.
(refer to figure 5)



Purge
control valve:- Operating226, 227,
 ECU
 Cable
 Purge control valve
 Ignition:ON 0.3 - 0.5 A
- Current
consumption
10 34
Creating
above 50mbar of vacuum
after approx. 1 minute
22.0 
Ignition:OFF
38 37 
Data bus
 22.1
 22.2
55 - 65




CAN data
bus
 Ignition:OFF

Engine:in idling
- connect the bridge to the test box for approx. 10 seconds
40, 41,54,
Connect the vacuum gauge between thecontrol valve andcanister
22,23, 24,26,27,29,30,31,59,60,

M162 ENGINE CONTROLS 1F1-19
Failurecode Item

22.1
Checking method
Test stepRequirementSpecified
value Possible cause
38 37 115 - 125




CAN module
resistance in ABS, ABD,ASR controlunit
 Cable
 ABS, ABD, ASR
control unit Ignition:OFF
- disconnect the coupling "No.1" from ECU.
22.2
38 37 115 - 125




CAN module
resistance inECU controlunit
 ECU Ignition:OFF
- disconnect the coupling "No.1" from ECU.
23.0
558 11 - 14 V



Diagnosis
cable operating ECU
 Cable

Ignition:ON
22,23, 24,26,27,29,30,31,59,60,

1F1-20 M162 ENGINE CONTROLS Reference Figures Figure2. RPM Sgnal OutputFigure 3. Injection Valve Wave(at idle speed)
Figure 4. Injection Valve Wave(at sharp acceleration) Figure 5. Purge Control Valve Operationg Wave