SsangYong Musso. Manual - part 124

1F-80 ENGINE CONTROLS

SSANGYONG Y158

1. Turn the ignition OFF.
2. Replace the ECM.
Is the repair complete?
Check for open or short in the wire between camshaft
actuator terminal 2 (1)* and Over Voltage Protection
Relay (OVPR) connector terminal 2 and repair as
necessary.
Is the repair complete?
1. Using the scan tool, clear the DTCs.
2. Start the engine and idle at normal operating

Temperature.

3. Operate the vehicle within the conditions for setting

the 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?

Step

Action

Value(s)

Yes

DTC P0010 Camshaft Actuator Short Circuit to Ground/Battery/Open (Cont’d)

Go to Step 12

Go to “OVPR

Circuit Check”

Go to Step 13

Go to Step 2

Go to Step 12

Go to

applicable

DTC table

System OK

* : 2.3L DOHC

ENGINE CONTROLS 1F-81

SSANGYONG Y158

BLANK

1F-82 ENGINE CONTROLS

SSANGYONG Y158

Circuit Description

The heated element on the hot-film air mass meter is a
platinum film resistor (heater). It is located on a ceramic
plate together with the other elements in the bridge cir-
cuit. The temperature sensitive resistor (flow sensor) also
included in the bridge. The separation of heater and flow
sensor facilitates design of the control circuitry.

Saw cuts are employed to ensure thermal decoupling
between the heating element and the intake air temper-
ature sensor. The complete control circuitry is located
on a single layer. The voltage at the heater provides the
index for the mass air flow. The hot film air mass me-
t e r ’ s electronic circuitry then converts the voltage to a

level suitable for processing in the engine control mod-
ule (ECM). This device does not need a burn off pro-
cess to maintain its measuring precision over an
extended period. In recognition of the fact that most de-
posits collect on the sensor element’s leading edge,
the essential thermal transfer elements are located
downstream on the ceramic layer. The sensor element
is also designed to ensure that deposits will not influence
the flow pattern around the sensor.

Conditions for Setting the DTC

•••••

Ratio between measured air mass and calculated
air mass is between 0.5 and 1.5 for more than 2.5
seconds.

•••••

DTCs P0101, P0102, P0103, P0111, P0112, P0113,
P0171, P0172, P0174, P0175, P0335 and P0336 are
not set.

•••••

Start end reached.

•••••

Engine speed gradient is less than 250 [rpm/s]

DIAGNOSTIC TROUBLE CODE (DTC) P0101

MASS AIR FLOW PLAUSIBILITY (3.2L DOHC)

•••••

Throttle valve gradient is less than 30 [° /s]

•••••

Throttle valve angle is beween 64° and 70°

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 buffers.

•••••

A history DTC is stored.

Conditions for Clearing the MIL/DTC

•••••

The Malfunction Indicator Lamp (MIL) will turn off af-
ter three consecutive driving cycles in which the diag-
nostic runs without a fault.

•••••

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

•••••

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

Diagnostic Aids

•••••

Check air cleaner for being plugged.

•••••

Check for air intake ducts for restrictions.

•••••

Check air intake ducts for leaks after the MAF sensor.

•••••

Check for partly restricted exhaust system.

•••••

Check for any other source that would allow air into
the engine after the MAF sensor.

•••••

This would include:

•••••

Intake manifold gasket

•••••

Intake manifold

•••••

Throttle body and/or gasket

YAA1F580

ENGINE CONTROLS 1F-83

SSANGYONG Y158

Step

Action

Value(s)

Yes

DTC P0101 Mass Air Flow Plausibility (3.2L DOHC)

Go to Step 2

Go to “Euro

On-Board

Diagnostic

System Check”

•••••

PCV system, this includes the oil dipstick for prop-

er seating

•••••

Injector O-rings

Test Description

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

1. 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 then
stored on the scan tool for later reference.

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

1. Turn the ignition ON, with the engine OFF.
2. Install a scan tool.
Is DTC P0102 or P0103 preset?
1. Operate engine at normal temperature.
2. Using the scan tool, select Engine Data.
3. With engine at idle, the scan tool should indicate a

“Mass Air Flow Meter” reading at the specified
value.

Is the reading at the specified value?
Increase engine rpm to 2500 and hold steady.
Is the reading at the specified value?
Release the throttle, and watch the Mass Air Flow
(MAF) sensor readings on the scan tool. The “Mass Air
Flow Meter” should decrease at a steady rate down to
the reading determined at idle, did it?
Check for restrictions in the Mass Air Flow induction
system. Also check for air leaks after the MAF sensor
or a possible restricted exhaust system and repair as
necessary.
Is the repair complete?
1. Turn the ignition OFF.
2. Replace the MAF sensor.
Is the repair complete?
1. Using the scan tool, clear the Diagnostic Trouble

Codes (DTCs).

2. Start the engine.
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 has ran
and passed?
Check if any additional DTCs are set.
Are any DTCs displayed that have not been diagnosed?

Go to

applicable

DTC table

Go to Step 3

1.3 - 1.7 v at

Idle

Go to Step 4

Go to Step 6

1.8 - 2.2 v at

2500 rpm

Go to Step 5

Go to Step 6

Go to Step 8

Go to Step 6

Go to Step 8

Go to Step 7

Go to Step 8

Go to Step 9

Go to Step 2

Go to

applicable

DTC table

System OK

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