Frelander 2. Manual - part 312

Electronic Engine Controls - TD4 2.2L Diesel - Electronic Engine Controls

Diagnosis and Testing

Principles of Operation

For a detailed description of the electronic engine controls, refer to the relevant Description and Operation section in the
workshop manual.
REFER to: Electronic Engine Controls (303-14 Electronic Engine Controls - TD4 2.2L Diesel, Description and Operation).

Inspection and Verification

CAUTION: Diagnosis by substitution from a donor vehicle is NOT acceptable. Substitution of control modules does

not guarantee confirmation of a fault, and may also cause additional faults in the vehicle being tested and/or the donor
vehicle.

1. Verify the customer concern.

2. Visually inspect for obvious signs of mechanical or electrical damage and system integrity.

Visual Inspection

Mechanical

Electrical

Fuel level (minimum of four liters for run out of fuel strategy)
Contaminated fuel
Engine oil level
Cooling system coolant level
Fuel system
Air intake system
Vacuum system

Wiring harness
Electrical connector(s)
Fuses(s)
Relay(s)

3. If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before

proceeding to the next step.

4. If the cause is not visually evident, verify the symptom and refer to the Symptom Chart, alternatively, check for

Diagnostic Trouble Codes (DTCs) and refer to the DTC Index.

Symptom Chart

Symptom

Possible Cause

Action

Engine Non-Start
Engine does not crank

Security system/Immobilizer
engaged
Battery
Powertrain control module relay
Park/Neutral switch
Brake/clutch switches
Throttle valve stuck
Starting system
Engine seized

Check that security system is disarmed. Ensure
battery is in fully charged and serviceable condition.
Check for DTCs and refer to relevant DTC Index.
Check Park/neutral and Brake/clutch switches.
Ensure correct start procedure is being adhered to.
Check engine is not seized

Engine cranks but does not
start

Contaminated fuel
Engine breather system
disconnected/restricted
Throttle valve stuck
Air intake system
Fuel system
Electronic engine controls

Check for fuel contamination. Check engine breather
and air intake system integrity. Ensure correct start
procedure is being adhered to. Check for DTCs and
refer to the relevant DTC Index

Difficult To Start
Difficult to start cold

Check engine coolant level/anti-
freeze content
Battery
Electronic engine controls
Exhaust gas recirculation (EGR)
valve stuck open
Fuel pump

Check engine coolant level/condition. Ensure
battery is in fully charged and serviceable condition.
Check for DTCs and refer to relevant DTC Index

Difficult to start hot

Electronic engine controls
Injector leak
Fuel system
Intake air system
Exhaust gas recirculation valve
stuck open
Blocked exhaust/catalytic
converter
Engine compressions low

Check for DTCs and refer to the relevant DTC Index.
Check engine, fuel, intake air, exhaust, systems for
integrity

Symptom

Possible Cause

Action

Difficult to start after hot
soak (vehicle standing,
engine off, after engine has
reached operating
temperature)

Injector leak
Electronic engine controls
Fuel pump
Exhaust gas recirculation valve
stuck open

Check fuel and engine control systems for DTCs and
refer to the relevant DTC Index

Engine cranks too fast/slow

Battery
Compressions high/low
Starting system

Check battery is fully charged and in serviceable
condition. Check engine compressions. Check
integrity of starting system

Driveability
Rough idle

Low/contaminated fuel
Fuel system
Air intake system
Electronic engine controls

Check fuel level/condition. Check for DTCs and refer
to relevant DTC Index. Check integrity of fuel, air
intake, and engine systems

Engine idle speed high, low,
erratic

Air intake system
Excessive blow-by
Exhaust gas recirculation valve
Turbo charger bearing/seal
Electronic engine controls

Check for DTCs and refer to the relevant DTC Index.
Check integrity of air intake, Turbo charger, and
engine systems

Lack of power under
acceleration

Contaminated fuel
Air intake system
Blocked exhaust/catalytic
converter
Turbo changer fault
Fuel system
Electronic engine controls
Low engine compressions

Check for fuel contamination. Check for DTCs and
refer to relevant DTC Index. Check integrity of air
intake, exhaust, Turbo charger, and engine systems

Engine stops/stalls

Contaminated fuel
Fuel system
Air intake system
Electronic engine controls

Check for fuel contamination. Check for DTCs and
refer to the relevant DTC Index. Check integrity of
fuel, air intake, and engine systems

Diesel Particulate Filter (DPF) Warning Messages
'DPF Full Visit Dealer'
message displayed. Torque
derate, regeneration locked
out (DTC P200200 also
logged)

Particulate filter soot mass
quantity above maximum
threshold

CAUTION: All intake air system leaks MUST be

rectified before carrying out dynamic regeneration.

Check for and rectify any related DTCs. Check for
correct installation and integrity of intake air
system, rectify as required. Carry out dynamic
regeneration using the manufacturer approved
diagnostic system

'Reduced Engine
Performance' message
displayed. No effect to
driveability. Regeneration
reduced to lower level (2)
(DTC P054516 also logged)

Pre-catalytic converter
temperature sensor circuit
voltage below threshold

Refer to electrical circuit diagrams and check
pre-catalytic converter temperature sensor circuit
for short to ground or open circuit

'Reduced Engine
Performance' message
displayed. No effect to
driveability (DTC P222700
also logged)

Atmospheric pressure sensor
defective

Clear DTC, run engine for 2 minutes, set ignition
status to OFF (power down), run engine for further
2 minutes, set ignition status to OFF (power down),
set ignition status to ON and read DTCs. If DTC still
present refer to new module/component installation
note at the top of the DTC Index

'Reduced Engine
Performance' or 'Engine
System Fault' message
displayed. Torque derate,
regeneration locked out
(DTC P244A16 also logged)

Particulate filter differential
pressure below limit

Clear DTC, cycle ignition status from ON to OFF
(power down) a minimum of six times, set ignition
status to ON, if DTC remains install a new
differential pressure sensor

'DPF Full Visit Dealer'
message displayed. Torque
derate, regeneration locked
out (DTC P244B68 also
logged)

Particulate filter differential
pressure high - engine protection
active

CAUTION: All intake air system leaks MUST be

rectified before carrying out dynamic regeneration.

Check for correct installation and integrity of
differential pressure sensor hoses, rectify as
required. Check for correct installation and integrity
of intake air system, rectify as required. Carry out
dynamic regeneration using the manufacturer
approved diagnostic system

'Reduced Engine
Performance' or 'Engine
System Fault' message
displayed. Torque derate,
regeneration locked out
(DTC P244C00 also logged)

Downstream catalytic converter
temperature sensor voltage
below lower limit
Sensor failure

Refer to the electrical circuit diagrams and check
downstream catalytic converter temperature sensor
circuit for open circuit. Install new temperature
sensor as required

Symptom

Possible Cause

Action

'Reduced Engine
Performance' or 'Engine
System Fault' message
displayed. Torque derate,
regeneration locked out
(DTC P244D00 also logged)

Downstream catalytic converter
temperature sensor voltage
above upper limit
Sensor failure

Refer to the electrical circuit diagrams and check
downstream catalytic converter temperature sensor
circuit for short to power. Install new temperature
sensor as required

'Reduced Engine
Performance' or 'Engine
System Fault' message
displayed. Regeneration
locked out (DTC P245300
also logged)

Particulate filter stationary
corrected differential pressure
below minimum

Differential pressure sensor hoses crossed over

'Reduced Engine
Performance' or 'Engine
System Fault' message
displayed. Torque derate,
regeneration locked out
(DTC P245500 also logged)

Particulate filter differential
pressure sensor voltage above
upper limit
Sensor failure

Refer to the electrical circuit diagrams and check
differential pressure sensor supply circuit for short
to power. Install a new sensor as required

'Reduced Engine
Performance' or 'Engine
System Fault' message
displayed. Torque derate,
regeneration locked out
(DTC P245600 also logged)

Leaking or blocked differential
pressure sensor hoses
Differential pressure sensor
circuit short, open circuit
Sensor failure

Check for split/degraded, blocked differential
pressure sensor hoses, refer to electrical circuit
diagrams and check differential pressure sensor
circuits for short, open circuit. Install a new sensor
as required

'Oil Service required'
message displayed (DTC
P250F00 also displayed)

Engine oil contaminated

Check engine oil condition, renew as required

'Oil Service required'
message displayed (DTC
P252F00 also displayed)

Engine oil contaminated

Check engine oil condition, renew as required

'Oil Service required'
message displayed (DTC
P253F00 also displayed)

Engine oil contaminated

Check engine oil condition, renew as required

'Reduced Engine
Performance' message
displayed. No effect to
driveability, regeneration
reduced to lower level (2)
(DTC P208000 also logged)

Exhaust gas temperature sensor
1 plausibility fault

Refer to electrical circuit diagrams and check
upstream catalytic converter temperature sensor
circuit for short circuit, open circuit

'Reduced Engine
Performance' or 'Engine
System Fault' message
displayed. Regeneration
locked out (DTC P244A00
also logged)

Signal not plausible. Differential
pressure sensor hose line
defective

Check for correct installation and integrity of
differential pressure sensor hoses, rectify as
required

'Reduced Engine
Performance' or 'Engine
System Fault' message
displayed. Torque derate,
regeneration locked out
(DTC P244B22 also logged)

Signal amplitude > maximum.
Particulate filter uncorrected
differential pressure value above
limit in after run

CAUTION: All intake air system leaks MUST be

rectified before carrying out dynamic regeneration.

'DPF Full' message
displayed, with see hand
book icon (DTC P245200 also
logged)

Poor driving style, unable to
facilitate regeneration

Refer driver to hand book

'Reduced Engine
Performance' or 'Engine
System Fault' message
displayed. Torque derate,
regeneration locked out
(DTC P245400 also logged)

Particulate filter differential
pressure sensor voltage below
lower limit
Sensor failure

Refer to the electrical circuit diagrams and check
differential pressure sensor supply circuit for short,
open circuit. Install a new sensor as required

'Reduced Engine
Performance' or 'Engine
System Fault' message
displayed. Torque derate,
regeneration locked out
(DTC P208400 also logged)

Exhaust gas temperature sensor
2 plausibility fault

Refer to electrical circuit diagrams and check
downstream catalytic converter temperature sensor
circuit for short circuit, open circuit

'Reduced Engine
Performance' message
displayed. No effect to
driveability, regeneration
reduced to lower level (2)
(DTC P054617 also logged)

Pre-catalytic converter
temperature sensor circuit
voltage above threshold

Refer to electrical circuit diagrams and check
pre-catalytic converter temperature sensor circuit
for short to power

'Reduced Engine
Performance' or 'Engine
System Fault' message
displayed. Regeneration
locked out (DTC P244A00

Signal not plausible. Differential
pressure sensor hose line
defective

Check for correct installation and integrity of
differential pressure sensor hoses, rectify as
required

Symptom

Possible Cause

Action

also logged)
'Reduced Engine
Performance' message
displayed. No effect to
driveability, regeneration
reduced to lower level (2)
(DTC P244B22 also logged)

Signal amplitude > maximum.
Particulate filter uncorrected
differential pressure value above
limit in after run

CAUTION: All intake air system leaks MUST be

rectified before carrying out dynamic regeneration.

'DPF Full Visit Dealer'
message displayed. Torque
derate, regeneration locked
out (DTC P244A97 also
logged)

Particulate filter differential
pressure sensor blocked

Check for blocked/restricted Differential Pressure
sensor and hoses

DTC Index

• NOTE: If the control module or a component is suspect and the vehicle remains under manufacturer warranty, refer to the
Warranty Policy and Procedures manual, or determine if any prior approval programme is in operation, prior to the
installation of a new module/component.

• NOTE: Generic scan tools may not read the codes listed, or may read only five digit codes. Match the five digits from the
scan tool to the first five digits of the seven digit code listed to identify the fault (the last two digits give additional
information read by the manufacturer approved diagnostic system).

• NOTE: When performing voltage or resistance tests, always use a digital multimeter (DMM) accurate to three decimal
places, and with an up-to-date calibration certificate. W hen testing resistance always take the resistance of the DMM
leads into account.

• NOTE: Check and rectify basic faults before beginning diagnostic routines involving pinpoint tests.

• NOTE: Inspect connectors for signs of water ingress, and pins for damage and/or corrosion.

• NOTE: If DTCs are recorded and, after performing the pinpoint tests, a fault is not present, an intermittent concern may
be the cause. Always check for loose connections and corroded terminals.

For a complete list of all diagnostic trouble codes that could be logged on this vehicle, please refer to section 100-00.
REFER to:

Diagnostic Trouble Code (DTC) Index - TD4 2.2L Diesel, DTC: Engine Control Module (ECM)

(100-00 General

Information, Description and Operation).

Content .. 310 311 312 313 ..