check engine SSANGYONG MUSSO 2003 Service Manual

M161 ENGINE ELECTRICAL 1E2-11
Inspection & Maintenance (for E2.3 MSE)
1. Measure the primary resistance between the cable terminals1 and 15 after removing the ignition cable wiring connector
(1 and 15) with ignition switch OFF. Notice Replace the ignition coil if out of the specified resistance.
T1/2 : between No.71 and No.69
Notice Check the ignition cable and the ECU if out of the
specified value.
3. Measure the secondary cable resistance between the ignition coil 5a and 5b using a multimeter.
2. Measure the primary voltage(T1/1) between the ECU
terminals No.72 and No.69 during the engine cranking (starter motor activated).
Specified Value 6 - 8.5 K
Specified Value0.9 - 1.6
Specified Value 200 - 350 V

1E2-12 M161 ENGINE ELECTRICALUNIT REPAIR
BATTERY
Inspection Notice
When charging the battery, do not leave the inflammable
objects around it.
When checking the electrolyte of battery, put on
an eye protector and gloves.
1. Inspect the surface of the battery and replace if any defects were found on it.
2. Check if the specific gravity of the electrolyte is within the specified value. Notice
Replace the battery if the maximum tolerance of the
electrolyte between cells is out of the specified value.
Measure the specific gravity in the approx. 20 °C
of ambient temperature.
3. Replenish the electrolyte if necessary. Battery Capacity(Ah)Battery Specific Gravity
Max. Tolerance between Cells
75
1.24
0.04

1F1-8 M162 ENGINE CONTROLSCruise control acceleration failure Cruise control deceleration failureECU failure(RAM)ECU failure(EPROM) Servo motor control output inter-ruption memory failureServo motor open/shortUnprogramed ECU with Immobilizer Uncoded ECU ECU failure(NVRAM checksum failure) ECU failure(coding ID checksum failure)ECU failure(coding checksum failure)ECU failure(programing checkusm failure)ABD input signal short(power) ABD input signal short(GND) Low pedal valve sensor SP1 voltageHigh pedal valve sensor SP1 voltageLow pedal valve sensor SP2 voltageHigh pedal valve sensor SP2 voltageDifferent pedal valve sensor signal(1,2) Pedal valve sensor 1,2 failure
HFM sensor, and throttle position sensorfailureECU failure(incompatible CPU)ECU failure(CPUs communication failure) ECU failure(CPU(2) configuration failure) ECU failure(CPU(2) fault)ECU failure(CPU run time failure betweenCPUs)No.5 injector short(PWR)
93969798 99
100 101 102 103 104 105108 109 11 0
11 6
11 7
11 9
120 121 122123125126 127 129130131132 Short learning control failureLambda control failure (rich stop)Lambda control failure (lean stop) Lambda idle adaptation failure(above rich threshold) Lambda idle adaptation failure(below lean threshold)learning control failure(rich, low load)learning control failure(lean, low load) learning control failure(rich, high load) learning control failure(lean, high load)Low throttle position sensor(IP1) voltageHigh throttle position sensor(IP1) voltageLow throttle position sensor(IP2) voltage High throttle position sensor(IP2) voltage Throttle actuator learning data faultThrottle actuator learning control failureExceed fuel-cut safety timeThrottle valve return spring failureCruise control interruption memory failure Throttle actuator failure Pedal module position sensor signal failureDifferent HFM signal with throttle potentiometerBoth throttle potentiometer(IP1&IP2) failureIPS1 with IPS2 High permanent throttle signal Message counter failure
cruise control ’OFF ’
Vehicle speed signal failure
Vehicle speed signal failureCruise control lever failure 133134 136 137 139 140 141142 143 144145146150 151 160161162163164 167 185 186 187 188 189190 192
Failure
code DescriptionFailure
code Description

M162 ENGINE CONTROLS 1F1-11
FUEL INJECTION SYSTEM TEST (MSE3.62)
Failurecode Item

1.0
Checking method
 Ignition:ON
Test stepRequirementSpecified
value Possible cause
10 12 11 -14V



ECU:power
supply - terminal 30(TM.30)
2.2 


Power
supply:
- terminal 87(TM.87) 
Ignition:ON 
Power supply cable
 OVPR
08,

1.1
 1.2
1.1 
Ignition:ON
10 2 11 -14V



Ground
cable:- Battery ground
 Ground cable
 Ground condition
Diagnosis socket
69 2
Diagnosis socket
1.2 
Ignition:ON
11 2 11 -14V



Power
supply: - terminal 30(TM.30)
 Power supply cable
Diagnosis socket
2.0 
Ignition:ON
51 1 11 -14V



ECU:power
supply - terminal 87(TM.87)
08, 
1.1
 2.1
2.1 
Ignition:ON 11 -14V



Ground
cable - Electronic ground 
Ground cable
52
Diagnosis socket
11 1
Diagnosis
socket Ignition:OFF
11 -14V
< 1V
3.0 
Engine:in Cranking
52 
Cable
 Ignition switch
11 -14
(during engine cranking)



Start signal:
- terminal 50(TM.50)

1F1-12 M162 ENGINE CONTROLS
Failurecode Item
09, 10,11,
Checking method
Te s t
stepRequirementSpecified value Possible cause
4.0 


HFM sensor
signal 105 81
 Ignition:ON 0.9 - 1.1V
4.1 - 4.3
 Cable
 External air inflow
 HFM sensor

Engine:in Idle
(Coolant temperature : > 70 °C )
: voltage value isincreased whenengine rpm isincreased 1.3 - 1.7V
4.1
105 4
 Ignition:ON
 HFM sensor
connector removed 4.7 - 5.2V

Cable
 ECU coupling



HFM sensor:
- 5V power supply HFM
sensor
4.2
3 108
 Ignition:ON
 HFM sensor
connector removed 4.7 - 5.2V

4.3
 Cable



HFM sensor:
- 5V power supply HFM
sensor
4.3
104 2
 Ignition:ON
 HFM sensor
connector removed 11 - 14V

Cable
 OVPR



HFM sensor:
- 12V power supply HFM
sensor
03, 04,05,
5.0 


Intake air
temperature sensor:- Voltage 105 80
Ignition:ON 
5.1
 ECU
± 5%
5.1 
Ignition:OFF
 No.2 ECU coupling
removed
105 80 
Cable
 HFM sensor



Intake air
temperature sensor:- Resistance° C
10 2030405060 ± 5%
3600242016621166 853600
°
C
102030405060 V
3.1
2.652.181.76 1.41.1

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