SsangYong Musso. Manual - part 113

1F-36 ENGINE CONTROLS

SSANGYONG Y158

Check for an open or short to voltage in the circuit
between the fuel pump relay terminal 86 and OVPR
circuit terminal 7.
Is a problem found and corrected?
Check the wire between the fuel pump relay connector
terminal 85 and the ECM connector terminal 33 for an
open.
Is the problem found?
Repair the wire between the fuel pump relay connector
terminal 85 to the ECM connector terminal 33.
Is the repair complete?
Repair the wire between the fuel pump relay connector
terminal 30 and the battery.
Is the repair complete?
1. Turn the ignition OFF.
2. Disconnect the fuel injector harness connectors

from all of the fuel injectors.

3. Turn the ignition ON.
4. Connect a test light between the fuel injector harness

connector 1 and ground.

5. Repeat step 4 for each of the remaining fuel

injectors.

Is the test light on at all of the fuel injectors?
1. Turn the ignition OFF.
2. Connect a test light between the fuel injector harness

connector terminal 2 and battery positive.

3. Crank the engine.
4. Repeat steps 2 and 3 for each of the remaining fuel

injectors.

Does the test light flash for all of the fuel injectors?
Measure the resistance of each fuel injector.
Is the resistance within the value specified (the resistance
will increase slightly at higher temperatures)?
Replace any of the fuel injectors with a resistance out of
specification.
Is the repair complete?
Check for open or short in the wire between fuel injector
harness connector terminal 1 from all of the fuel
injectors and OVPR connector terminal 6 and repair as
necessary.
Is the repair complete?

Step

Action

Value(s)

Yes

Go to Step 59

Go to Step 37

Go to Step 2

Go to Step 62

Go to Step 65

Go to Step 2

Go to “OVPR

Circuit Check”

Engine Crank But Will Not Run (3.2L DOHC) (Cont’d)

14 - 17 K

Ω

System OK

Go to Step 64

Go to Step 2

Go to “OVPR

Circuit Check”

Go to Step 63

Go to Step 66

ENGINE CONTROLS 1F-37

SSANGYONG Y158

1. Check for an open between the fuel injector 1

harness connector terminal 2 and the ECM
connector terminal 63.

2. Check for an open between the fuel injector 2

harness connector terminal 2 and the ECM
connector terminal 61.

3. Check for an open between the fuel injector 3

harness connector terminal 2 and the ECM
connector terminal 66.

4. Check for an open between the fuel injector 4

harness connector terminal 2 and the ECM
connector terminal 62.

5. Check for an open between the fuel injector 5

harness connector terminal 2 and the ECM
connector terminal 65.

6. Check for an open between the fuel injector 6

harness connector terminal 2 and the ECM
connector terminal 64.

Is the problem found?
Repair the open fuel injector harness wire(s)
Is the repair complete?

Step

Action

Value(s)

Yes

Engine Crank But Will Not Run (3.2L DOHC) (Cont’d)

Go to Step 67

Go to Step 37

Go to Step 2

1F-38 ENGINE CONTROLS

SSANGYONG Y158

Circuit Description

When the ignition is turned ON, the Malfunction Indica-
tor Lamp (MIL) will be turned ON and remain ON until
the engine is running, if no Diagnostic Trouble Codes
(DTCs) are stored. Battery voltage is supplied through
the ignition switch directly to the MIL telltale. The Engine
Control Module (ECM) controls the MIL by providing a
ground path through the MIL control circuit to turn ON
the MIL.

NO MALFUNCTION INDICATOR LAMP

Diagnostic Aids

An open ignition F30 fuse will cause the entire cluster
to be inoperative.

Check the battery and ignition feed circuits for poor con-
nections if the MIL is intermittent.

Any circuitry, that is suspected as causing an intermit-
tent complaint, should be thoroughly checked for
backed-out terminals, improper mating, broken locks,
improperly formed or damaged terminals, poor terminal-
to-wiring connections or physical damage to the wiring
harness.

YAB1F080

ENGINE CONTROLS 1F-39

SSANGYONG Y158

Test Description

Number(s) below refer to the step(s) number on the
diagnostic table.

1. The Euro On-Board Diagnostic (EOBD) System

Check prompts the technician to complete some
basic checks and store the freeze frame and failure
re-cords data on the scan tool, if applicable. This
creates an electronic copy of the data taken when
the malfunction occurred. The information is stored
in the scan tool for later reference.

3. Connections that are suspected of being faulty

should be thoroughly checked as described in the
diagnostic aids.

4. If the engine fails to start and the MIL is inoperative,

then the fault can be isolated to either the ECM
igni-tion feed, the battery feed, or a poor ground at
the engine block or the ECM.

6. Probing the MIL circuit with a test light to ground

stimulates the ECM’s control of the MIL. If the MIL
illuminates, then the malfunction can be isolated to
the control of the MIL or a poor connection at the

MIL terminal to the ECM. Connections that are sus-
pected of being faulty should be thoroughly checked
as described in the diagnostic aids.

8. It takes very little resistance for the battery and igni-

tion feed circuits to cause an intermittent condition
and should also be checked for a poor connection
as described in diagnostic aids.

12. Before replacing the ECM, check for backed-out ter-

minals, improper mating, broken locks, improperly
formed or damaged terminals, poor terminal-to-wir-
ing harness. Replacement ECM must be repro-
grammed. Refer to the latest Techline information
for reprogramming procedures.

21. ECM grounds will only cause a problem if all of the

grounds are not making a good connection. If an
ECM ground problem is suspected, the most prob-
able place to check is where all the grounds meet,
at the engine block.

23. If not faults have been found at this point and no

DTCs were set, refer to the diagnostic aids for addi-
tional checks and information.

Perform an Euro On-Board Diagnostic (EOBD) System
Check.
Is the check performed?

Turn the ignition ON, with the engine OFF.
Is the Malfunction Indicator Lamp (MIL) ON?
Check for a poor connection at the battery feed terminal
12 or ignition feed terminal 11 at the Engine Control
Module (ECM) connector and repair as necessary.
Is a repair necessary?
Attempt to start the engine.
Does the engine start?
Check for a faulty ECM ground connection at the engine
block or ECM connector ground terminals and repair as
necessary.
Is the repair complete?
1. Turn the ignition OFF.
2. Disconnect the Engine Control Module (ECM)

connector.

3. Turn the ignition ON.
4. With a test light connected to ground, probe the MIL

control circuit terminal 29.

Is the MIL ON?
Inspect the ignition and battery feed fuses.
Are the fuses OK?

Step

Action

Value(s)

Yes

No Malfunction Indicator Lamp

Go to Step 3

Go to Step 4

Go to Step 22

Go to Step 5

Go to Step 22

Go to Step 10

Go to Step 11

Go to Step 8

Go to Step 9

Go to Step 6

Go to Step 7

Go to Step 2

Go to “Euro

On-Board

Diagnostic

System Check”

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