SsangYong Musso. Manual - part 205

1F-404  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.

DTC P0650-224 sets when the MIL circuit is short to
battery.

DIAGNOSTIC TROUBLE CODE (DTC) P0650-224

MIL SHORT CIRCUIT TO BATTERY

Conditions for Setting the DTC

•••••

Current is between 1 ampare and 2 ampares
(depending on driver condition).

Action Taken When the DTC Sets

•••••

The Malfunction Indicator Lamp (MIL) will illuminate
after two consecutive driving cycles in which the diag-
nostic runs with the fault active.

•••••

The ECM will record operating conditions at the time
the diagnostic fails. This information will be stored in
the Freeze Frame and Failure Records buffer.

•••••

A history DTC is stored.

YAB1F080

ENGINE CONTROLS  1F-405

SSANGYONG  Y158

Conditions for Clearing the MIL/DTC

•••••

The MIL will turn OFF after 3 consecutive driving
cycles in which the diagnostic runs without a fault.

•••••

A history DTC will clear after 40 consecutive warm-
up cycles without a fault.

•••••

DTC(s) can be cleared by using the scan tool.

Diagnostic Aids

•••••

Inspect the wiring for poor electrical connections at
the MIL and ECM connectors. Look for possible bent,
backed out, deformed or damaged terminals. Check
for weak terminal tension as well. Also check for
chafed wires that could short to bare metal or other
wiring. Inspect for broken wire inside the insulation.

•••••

If diagnosing for a possible intermittent short or open
condition, move or massage the wiring harness while
observing test equipment for a change.

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
records data on then 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.

2. When the ignition is turned ON, the MIL should be

turned ON and remain ON until the engine is running
or if an emission related DTC is stored.

3. This step checks the short to battery at the MIL

control circuit.

8. The replacement ECM must be reprogrammed. Re-

fer to  the latest Techline information for reprogram-
ming procedures.

1

Step

Action

Value(s)

Yes

No

DTC P0650-224 MIL Short Circuit to Battery

2

3

4

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) OFF?

1. Turn the ignition OFF.
2. Disconnect the MIL connector.
3. With a test light connected to ground, probe the MIL

control circuit terminal B1.

Does the test light illuminate?
1. Disconnect the Engine Control Module (ECM)

connector.

2. With a test light connected to ground, probe the MIL

control circuit terminal 29.

Does the test light illuminate?
Repair the MIL control circuit for a short to battery.
Is the action complete?
Check the malfunctioning ECM connector terminals and
repair as necessary.
Is the repair complete?
Replace the instrument panel cluster. Refer to Section
9E, Instrumentation/Driver Information.
Is the repair complete?

-

Go to Step 4

 Go to Step 7

-

 Go to Step 2

Go to “Euro

On-Board

Diagnostic

System Check”

-

 Go to Step 5

 Go to Step 6

-

 Go to Step 9

-

5

6

-

 Go to Step 9

-

-

 Go to Step 9

 Go to Step 8

7

-

 Go to Step 3

Go to

“Diagnostic

Aids”

1F-406  ENGINE CONTROLS

SSANGYONG  Y158

8

Step

Action

Value(s)

Yes

No

DTC P0650-224 MIL Short Circuit to Battery (Cont’d)

9

10

1. Turn the ignition OFF.
2. Replace the ECM.
Is the repair complete?
1. Using the scan tool, clear the Diagnostic Trouble

Codes (DTCs).

2. Start the engine and idle at normal operating

temperature.

3. Operate the vehicle within the conditions for setting

this DTC as specified in the supporting text.

Does the scan tool indicate that this diagnostic ran and
passed?
Check if any additional DTCs are set.
Are any DTCs displayed that have not been diagnosed?

-

Go to Step 10

 Go to Step 2

-

 Go to Step 9

-

-

Go to

applicable

DTC table

System OK

ENGINE CONTROLS  1F-407

SSANGYONG  Y158

BLANK