SsangYong Musso. Manual — part 337

M161 ENGINE CONTROLS 1F2-27

AIR CONDITIONER CONTROL SYSTEM TEST

⇒

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

code

Item

⇒

1.0

Checking method

•

Engine:In idling

•

Air conditioner

switch:ON/OFF

Air conditioner

switch:OFF

Air conditioner

switch:ON

Test

step

Requirement

Specified

value

10

44

< 1 V

•••••

Air

conditioner

signal:

- Input signal

(input signal

from thermo

amplifier)

44,

45,

11 - 14 V

•

⇒

5.1

•

Cable

•

Thermo amp

•

Auto amp

•

Dual pressure

switch

•

Air conditioner

control panel

⇒

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

1F2-28 M161 ENGINE CONTROLS

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

M161 ENGINE CONTROLS 1F2-29

Failure

code

Item

Checking method

Test

step

Requirement

Specified

value

Possible cause

3.2 - 3.6 bar

•••••

Fuel

pressure:in

idling speed

- When the

vacuum is

applied

•

Engine:in idling

- Colse the valve

screw on pressure

tester

⇒

1.0

Connect the fuel

pressure test plug to

the 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 is

not applied

•

Engine:in idling

- Colse the valve

screw on pressure

tester

⇒

2.0

Connect the fuel

pressure test plug to

the pressure tester

(refer to the flgure on

previous page).

•

⇒

Fuel pump test

•

Fuel pressure

regulator

> 3.0 bar

•••••

Fuel system

internal

leakage:

•

Engine:stop

⇒

3.0

Connect the fuel

pressure test plug to

the pressure tester

(refer to the flgure on

previous page).

•

The pressure drops

rapidly:non-return

valve in fuel pump

> 2.5 bar

•

After 30 minutes

from engine stop

•

The pressure

drops slowly:

- Injector test

- Fuel pressure

regulator

- O-ring

1F2-30 M161 ENGINE CONTROLS

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.

03 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