2003 SSANGYONG MUSSO Service Manual

M162 ENGINE CONTROLS 1F1-29
FUEL PRESSURE AND INTERNAL LEAKAGE TEST
01 Pressure Tester
02 Pressure Hose
03 Measuring Beaker
Preparation Connection of the Equipment
1. Turn the ignition switch to "OFF" position.
2. Remove the air cleaner cross pipe.
3. Remove the cap on fuel pressure test plug and connect the
pressure hose and pressure tester.
4. Prepare the beaker for measuring the amount of fuel.
Tools Required
103 589 00 21 00 Pressure Tester
119 589 04 63 00 Pressure Hose

1F1-30 M162 ENGINE CONTROLS
Failurecode ItemChecking method
Te s t
stepRequirementSpecified value Possible cause
3.2 - 3.6 bar



Fuel
pressure:in idling speed- When the vacuum isapplied 
Engine:in idling
- Close the valve screw on pressuretester
1.0 Connect the fuel
pressure test plug tothe pressure tester
(refer to the flgure on previous page). 
Fuel pump test
 Fuel pressure
regulator
3.7 - 4.2 bar



Fuel
pressure:in idling speed- When the vacuum isnot applied 
Engine:in idling
- Close the valve screw on pressuretester

2.0 Connect the fuel
pressure test plug tothe pressure tester
(refer to the flgure on previous page). 
Fuel pressure
regulator
> 3.0 bar



Fuel system
internalleakage: 
Engine:stop
3.0 Connect the fuel
pressure test plug tothe pressure tester
(refer to the flgure on previous page). 
The pressure drops
rapidly:non-returnvalve in fuel pump
> 2.5 bar

After 30 minutes from
engine stop 
The pressure drops
slowly: - Injector test- Fuel pressure regulator
- O-ring

M162 ENGINE CONTROLS 1F1-31
FUEL PUMP TEST Preparation
1 ECU
2 Test Coupling(No.1-60)
3 Test Coupling(No.61-120)
4 Stop Watch
5 Measuring Beaker
Connection of the Equipment
1. Turn the ignition switch to "OFF" position. 2. Connect the test box to the ECU. 0 3 Test Box
04 ECU Test Cable
Tools Required
103 589 00 21 00 Pressure Tester 210 589 00 99 00 Adaptor Line
129 589 00 21 00 Test Box
210 589 08 63 00 Ecu Test Cable

1F1-32 M162 ENGINE CONTROLS
Failurecode ItemChecking method
Test
stepRequirementSpecified
value Possible cause
1 liter of fuel supply formax. 35
seconds



Fuel pump:
- Fuel supply ratio 
Ignition:ON
- Disconnect the fuel return pipe and connect the host tobeaker to collect thesupplied fuel

1.0 
2.0
 Check the fuel line
5 - 9 A



Fuel pump:
- Current consumption 
Ignition:ON
- Remove the fuel relay from the fuseand relay box inluggagecompartment andconnect theamperemeterbetween No.1 andNo.3 in relaybox(fuel pump relay removed position) for measuringcurrent consumption

2.0 
Fuel pump
53 3
Multi tester(DC current)
31

M162 ENGINE CONTROLS 1F1-33
Connection of the Equipment
1. Connect the test box to the ECU as shown in the figure.
2. Remove the 2-pin coupling from injector.
3. Remove the fuel distributor and injector with a unit. At thistime, do not remove the supply and return line.
4. Connect the shop made cable to the injector with a firing order.
5. Collect the fuel from injector.
INJECTOR TEST
1 ECU
2 Test Coupling(No.1-60)
3 Test Coupling(No.61-120)
4 Measuring Beaker
5 Shop Made Cable
Preparation
0 3 Test Box
04 ECU Test Cable
Tools Required
129 589 00 21 00 Test Box
210 589 08 63 00 Ecu Test Cable

1F1-34 M162 ENGINE CONTROLS Figure 9. Shop Made CableFigure 10. Fuel Injector Normal Spary Pattern
Failure
code ItemChecking method
Test
stepRequirementSpecified value Possible cause
There should be no leaks and later
drops from
the injector



Injector:
- Leakage test 
Ignition:ON
- Remove the fuel distributor and fuel injector with a unit.

1.0
The spray
pattern of the injector most show in the figure 10.

Ignition:ON
- Connect the shop made cable to theinjector
- Collect the spraying fuel with a beaker
- Connect the shop made cable toNo.21(+) and No.3
(-) terminal in test box

2.0 
Injector
53 3



Injector:
- Function test and spray patterncheck
53 3

M162 ENGINE CONTROLS 1F1-35
MAINTENANCE AND REPAIRON-VEHICLE SERVICE
ECU Appearance
1 Cover
2 Plate
3 Connector
4 Flat Pin Vehicle Side : No. 1 - 12 Engine Side : No. 61 - 72 5 Pin
Vehicle Side : No. 13 - 60Engine Side : No. 73 - 120
A Vehicle Side Connector : Black
B Engine Side Connector : Gray

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