Daewoo Matiz (2003 year). Manual — part 36

1F – 54 ENGINE CONTROLS

FUEL INJECTOR BALANCE TEST

A fuel injector tester is used to energize the injector for a
precise amount of time, thus spraying a measured
amount of fuel into the intake manifold. This causes a

drop in the fuel rail pressure that can be recorded and
used to compare each of the fuel injectors. All of the fuel
injectors should have the same pressure drop.

Fuel Injector Balance Test Example

Cylinder

1

2

3

First Reading

380 kPa

(55 psi)

380 kPa

(55 psi)

380 kPa

(55 psi)

Second Reading

215 kPa

(31 psi)

201 kPa

(29 psi)

230 kPa

(33 psi)

Amount Of Drop

165 kPa

(24 psi)

179 kPa

(26 psi)

151 kPa

(22 psi)

Average Range: 156-176 kPa

(22.5-25.5 psi)

Injector OK

Faulty Injector –

Too Much

Pressure Drop

Faulty Injector –

Too Little

Pressure Drop

Caution: The fuel system is under pressure. To
avoid fuel spillage and the risk of personal injury or
fire, it is necessary to relieve the fuel system pres-
sure before disconnecting the fuel lines.

Caution: Do not pinch or restrict fuel lines. Damage
to the lines could cause a fuel leak, resulting in pos-
sible fire or personal injury.

Notice: In order to prevent flooding of the engine, do not
perform the Injector Balance Test more than once (in-
cluding any retest on faulty fuel injectors) without run-
ning the engine.

Test

Notice: An engine cool down period of 10 minutes is
necessary in order to avoid irregular readings due to hot
soak fuel boiling.

1. Connect the fuel pressure gauge carefully to avoid

any fuel spillage.

2. The fuel pump should run about 2 seconds after the

ignition is turned to the ON position.

3. Insert a clear tube attached to the vent valve of the

fuel pressure gauge into a suitable container.

4. Bleed the air from the fuel pressure gauge and hose

until all of the air is bled from the fuel pressure gauge.

5. The ignition switch must be in the OFF position at

least 10 seconds in order to complete the electronic
control module (ECM) shutdown cycle.

6. Turn the ignition ON in order to get the fuel pressure

to its maximum level.

7. Allow the fuel pressure to stabilize and then record

this initial pressure reading. Wait until there is no
movement of the needle on the fuel pressure gauge.

8. Follow the manufacturer’s instructions for the use of

the adapter harness. Energize the fuel injector test-
er once and note the fuel pressure drop at its lowest
point. Record this second reading. Subtract it from
the first reading to determine the amount of the fuel
pressure drop.

9. Disconnect the fuel injector tester from the fuel in-

jector.

10. After turning the ignition ON, in order to obtain maxi-

mum pressure once again, make a connection at
the next fuel injector. Energize the fuel injector test-
er and record the fuel pressure reading. Repeat this
procedure for all the injectors.

11. Retest any of the fuel injectors that the pressure

drop exceeds the 10 kPa (1.5 psi) specification.

12. Replace any of the fuel injectors that fail the retest.

13. If the pressure drop of all of the fuel injectors is with-

in 10 kPa (1.5 psi), then the fuel injectors are flowing
normally and no replacement should be necessary.

14. Reconnect the fuel injector harness and review the

symptom diagnostic tables.

ENGINE CONTROLS 1F – 55

DIAGNOSTIC TROUBLE CODE DIAGNOSIS

CLEARING TROUBLE CODES

Notice: To prevent Engine Control Module (ECM) dam-
age, the key must be OFF when disconnecting or recon-
necting the power to the ECM (for example battery
cable, ECM pigtail connector, ECM fuse, jumper cables,
etc.).When the ECM sets a Diagnostic Trouble Code
(DTC), the Malfunction Indicator Lamp (MIL) lamp will
be turned on only for type A, B and E but a DTC will be
stored in the ECM’s memory for all types of DTC. If the

problem is intermittent, the MIL will go out after 10 sec-
onds if the fault is no longer present. The DTC will stay
in the ECM’s memory until cleared by scan tool. Remov-
ing battery voltage for 10 seconds will clear some stored
DTCs.
DTCs should be cleared after repairs have been com-
pleted. Some diagnostic tables will tell you to clear the
codes before using the chart. This allows the ECM to set
the DTC while going through the chart, which will help to
find the cause of the problem more quickly.

DIAGNOSTIC TROUBLE CODES

DTC

Function

Error Type

Illuminate MIL

P0107

Manifold Absolute Pressure Sensor Low Voltage

A

YES

P0108

Manifold Absolute Pressure Sensor High voltage

A

YES

P0112

Intake Air Temperature Sensor Low Voltage

E

YES

P0113

Intake Air Temperature Sensor High voltage

E

YES

P0117

Engine Coolant Temperature Sensor Low Voltage

A

YES

P0118

Engine Coolant Temperature Sensor High voltage

A

YES

P0122

Throttle Position Sensor Low Voltage

A

YES

P0123

Throttle Position Sensor Hig voltage

A

YES

P0131

Oxygen Sensor Low Voltage

A

YES

P0132

Oxygen Sensor High Voltage

A

YES

P0133

Oxygen Sensor No Activity

E

YES

P0137

Heated Oxygen Sensor Low Voltage

E

YES

P0138

Heated Oxygen Sensor high voltage

E

YES

P0140

Heated Oxygen Sensor No Activity

E

YES

P0141

Heated Oxygen Sensor Heater Malfuction

E

YES

P0171

Fuel Trim System Too Lean

E

YES

P0172

Fuel Trim System Too Rich

E

YES

P1230

Fuel Pump Relay Low Voltage

A

YES

P1231

Fuel Pump Relay High Voltage

A

YES

P0261

Injector 1 Low Voltage

A

YES

P0262

Injector 1 high voltage

A

YES

P0264

Injector 2 Low Voltage

A

YES

P0265

Injector 2 high voltage

A

YES

P0267

Injector 3 Low Voltage

A

YES

P0268

Injector 3 high voltage

A

YES

P0300

Multifle Cylinder Misfire

A/E

BLINKING/ON

P1320

Crankshatft Segment Period Segment Adaptation At Limit

E

YES

P1321

Crankshatft Segment Period Tooth Error

E

YES

P0327

Knock Sensor Circuit Fault

E

YES

P0335

Magnetic Crankshaft Position Sensor Electrical Error

E

YES

1F – 56 ENGINE CONTROLS

Diagnostic Trouble Codes (Cont’d)

DTC

Function

Error Type

Illuminate MIL

P0336

58X Crankshaft Position Sensor Extra/missing Pulse

E

YES

P0337

58X Crankshaft Sensor No Signal

E

YES

P0341

Camshaft Position Sensor Rationality

E

YES

P0342

Camshaft Position Sensor No Signal

E

YES

P0351

Ignition Signal Coil A Fault

A

YES

P0352

Ignition Signal Coil B Fault

A

YES

P0353

Ignition Signal Coil C Fault

A

YES

P1382

Rough Road Data Invalid (Non ABS)

Cnl

NO

P1382

Rrough Road Data Invalid (ABS)

Cnl

NO

P1385

Rough Road Sensor Circuit Fault (Non ABS)

Cnl

NO

P1385

Rough Road Sensor Circuit Fault (ABS)

Cnl

NO

P0400

Exhaust Gas Recirculation Out of Limit

E

YES

P1402

Exhaust Gas Recirculation Blocked

E

YES

P1403

Exhaust Gas Recirculation Valve Failure

E

YES

P0404

Electric Exhaust Gas Recirculation (EEGR) Opend

E

YES

P1404

Electric Exhaust Gas Recirculation (EEGR) Closed

E

YES

P0405

EEGR Pintle Position Sensor Low Voltage

E

YES

P0406

EEGR Pintle Position Sensor High voltage

E

YES

P0420

Catalyst Low Efficiency

E

YES

P0444

EVAP Purge Control Circuit No Signal

E

YES

P0445

EVAP Purge Control Circuit Fault

E

YES

P0462

Fuel Level Sensor Low Voltage

Cnl

NO

P0463

Fuel Level Sensor High voltage

Cnl

NO

P0480

Low Speed Cooling Fan Relay Circuit Fault (Without A/C)

Cnl

NO

P0480

Low Speed Cooling Fan Relay Circuit Fault (With A/C)

Cnl

NO

P0481

High Speed Cooling Fan Relay High Voltage (Without A/C)

Cnl

NO

P0481

High Speed Cooling Fan Relay High Voltage (With A/C)

Cnl

NO

P0501

Vehicle Speed No Signal (M/T Only)

A

YES

P0505

Idle Air Control Valve (IACV) Error

E

YES

P1535

Evaporator Temperature Sensor High Voltage

Cnl

NO

P1536

Evaporator Temperature Sensor Low Voltage

Cnl

NO

P1537

A/C Compressor Relay High Voltage

Cnl

NO

P1538

A/C Compressor Relay Low Voltage

Cnl

NO

P0562

System Voltage (Engine Side) Too Low

Cnl

NO

P0563

System Voltage (Engine Side) Too High

Cnl

NO

P0601

Engine Control Module Checksum Error

E

YES

P0604

Engine Control Module RAM Error

E

YES

P0605

Engine Control Module NMVY Write Error

E

YES

P1610

Main Relay High Voltage

A

YES

P1611

Main Relay Low Voltage

A

YES

P1628

Immobilizer No Successful Communication

Cnl

NO

P1629

Immobilizer Wrong Computation

Cnl

NO

P0656

Fuel Level Gauge High Circuit Fault

Cnl

NO

ENGINE CONTROLS 1F – 57

Diagnostic Trouble Codes (Cont’d)

DTC

Function

Error Type

Illuminate MIL

P1660

Malfunction Indicator Lamp(MIL) High Voltage

E

YES

P1661

Malfunction Indicator Lamp(MIL) Low Voltage

E

YES