2003 DAEWOO MATIZ wiring

ENGINE CONTROLS 1F–269
DAEWOO M-150 BL2
DTC P1611 – Main Relay Low Voltage
StepActionValue(s)YesNo
1
Perform an On-Board Diagnostic (EOBD) System
Check.
Is the system check complete?
–
Go to Step 2
Go to
“On-Board
Diagnostic
System Check”
2
1. Disconnect the main relay.
2. Measure the resistance between main relay
terminals 85 and 86.
Does the resistance within the specified value?
75~85ΩGo to Step 3Go to Step 6
3
1. Turn the ignition switch to LOCK.
2. With the test light, connected to ground, probe
the ignition feed circuit, at terminal 85 in the relay
harness connector.
Does the test light illuminate?
–
Go to Step 4
Go to
“Diagnostic
Aids”
4
1. Turn the ignition switch to LOCK.
2. Disconnect the ECM wiring harness connector.
3. With the test light, connected to ground, probe
the ignition feed circuit, at terminal 85 in the relay
harness connector.
Does the test light illuminate?
–
Go to Step 5Go to Step 7
5
Repair a high voltage between the ECM wiring
connector terminal 7 and main relay terminal 85.
Is the repair complete?
–
Go to Step 7
–
6Replace the main relay.
Is the replacement complete?–Go to Step 7–
7
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 has
run and passed?
–
Go to Step 8Go to Step 2
8
Check if any additional DTCs are set.
Are any DTCs displayed that that have not been
diagnosed?
–
Go to
applicable DTC
tableSystem OK

1F–274 ENGINE CONTROLS
DAEWOO M-150 BL2
MAA1F340
DIAGNOSTIC TROUBLE CODE (DTC) – P0656 FUEL LEVEL GAUGE CIRCUIT
FAULT
Circuit Description
The engine control module(ECM) uses the fuel level in-
put from the Fuel Level Sensor to calculate expected va-
por pressures within the fuel system. Vapor pressure
vary as the fuel level changes. Vapor pressure is critical
in determining if the evaporative emission (EVAP) sys-
tem is operating properly. Fuel Level is also used to de-
termine if the Fuel level is too high or too low to be able
to accurately detect EVAP system faults. This Diagnos-
tic Trouble Code(DTC) detects a stuck fuel level sender.
Conditions for Setting the DTC

Fuel Level Sensor voltage is higher than 4.8V.

Fuel Level Sensor circuit high voltage.
Action Taken When the DTC Sets

The Malfunction Indicator Lamp (MIL) will not illumi-
nate.

The ECM will store conditions which were present
when the DTC was set as Failure Records data only.

This information will not be stored in the Freeze
Frame data.Conditions for Clearing the MIL/DTC

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 harness connectors for backed-out terminal, im-
proper mating, broken locks, improperly formed or dam-
aged terminals, and poor terminal-to-wire connection.
Inspect the wiring harness for damage.
A stuck Fuel Level Sensor may cause the DTC to set. If
DTC P0656 cannot be duplicated, the information in-
cluded in the Freeze Frame data can be useful in deter-
mining vehicle operating conditions when the DTC was
first set.
Resistance check for the Fuel Level Sensor.

Empty = 100 ohms or over.

Half full = about 32.5 ohms.

Full = 10 ohms or less.

1F–276 ENGINE CONTROLS
DAEWOO M-150 BL2
MAA1F030
DIAGNOSTIC TROUBLE CODE (DTC) – P1660 MALFUNCTION INDICATOR
LAMP (MIL) HIGH VOLTAGE
Circuit Description
When the ignition switch to ON, the Malfunction Indica-
tor Lamp (MIL) is ON steady.
When the engine cranking, the Malfunction Indicator
Lamp (MIL) is OFF after one flashing time.
If a system have some difficulties, the Malfunction Indi-
cator Lamp (MIL) is ON.
Conditions for Setting the DTC

The Malfunction Indicator Lamp (MIL) wiring harness
high voltage.
Action Taken When The DTCs Sets

The Malfunction Indicator Lamp (MIL) will illuminate.

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 MIL will turn off after four consecutive ignition
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
An Intermittent problem may be caused by a poor con-
nection, rubbed through wire insulation, or wire that is
broken inside the insulation.
Any circuitry, that is suspected as causing the com-
plaint, should be thoroughly checked for the following
conditions.

Backed-out terminals

Improper mating

Broken locks

Improperly formed

Damaged terminals

Poor terminals to wire connection

Physical damage to the wiring harness

ENGINE CONTROLS 1F–277
DAEWOO M-150 BL2
DTC P1660 – Malfunction Indicator Lamp (MIL) High Voltage
StepActionValue(s)YesNo
1
Perform an On-Board Diagnostic (EOBD) System
Check.
Is the system check complete?
–
Go to Step 2
Go to
“On-Board
Diagnostic
System Check”
2
1. Turn the ignition switch to LOCK.
2. Disconnect the cluster wiring connector.
3. With the test light, connected to ground, probe
the ignition feed circuit, at terminal A7 in the
harness connector.
Does the resistance within the specified value?
0 ΩGo to Step 3Go to Step 6
3
1. Turn the ignition switch to LOCK.
2. With the test light, connected to ground, probe
the ignition feed circuit, at ECM wiring connector
terminal 68.
Does the test light illuminate?
–
Go to Step 4Go to Step 5
4
1. Turn the ignition switch to LOCK.
2. Replace the cluster.
Is the replacement complete?
–
Go to Step 6
–
5
Repair a short to battery between the ECM wiring
connector terminal 68 and cluster wiring connector
terminal B9.
Is the repair complete?
–
Go to Step 6
–
6
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 has
run and passed?
–
Go to Step 7Go to Step 2
7
Check if any additional DTCs are set.
Are any DTCs displayed that that have not been
diagnosed?
–
Go to
applicable DTC
table
System OK

1F–278 ENGINE CONTROLS
DAEWOO M-150 BL2
MAA1F030
DIAGNOSTIC TROUBLE CODE (DTC) – P1661 MALFUNCTION INDICATOR
L A M P ( M I L ) L O W V O LTA G E
Circuit Description
When the ignition switch to ON, the Malfunction Indica-
tor Lamp (MIL) is ON steady.
When the engine cranking, the Malfunction Indicator
Lamp (MIL) is OFF after one flashing time.
If a system have some difficulties, the Malfunction Indi-
cator Lamp (MIL) is ON.
Conditions for Setting the DTC

The Malfunction Indicator Lamp (MIL) wiring harness
low voltage.
Action Taken When the DTC Sets

The Malfunction Indicator Lamp (MIL) will illuminate.

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 MIL will turn off after four consecutive ignition
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
An Intermittent problem may be caused by a poor con-
nection, rubbed through wire insulation, or wire that is
broken inside the insulation.
Any circuitry, that is suspected as causing the com-
plaint, should be thoroughly checked for the following
conditions.

Backed-out terminals

Improper mating

Broken locks

Improperly formed

Damaged terminals

Poor terminals to wire connection

Physical damage to the wiring harness

ENGINE CONTROLS 1F–279
DAEWOO M-150 BL2
DTC P1661 – Malfunction Indicator Lamp (MIL) Low Voltage
StepActionValue(s)YesNo
1
Perform an On-Board Diagnostic (EOBD) System
Check.
Is the system check complete?
–
Go to Step 2
Go to
“On-Board
Diagnostic
System Check”
2
1. Turn the ignition switch to LOCK.
2. Disconnect the cluster wiring connector.
3. With the test light, connected to ground, probe
the ignition feed circuit, at terminal A7 in the
harness connector.
Does the resistance within the specified value?
–
Go to Step 3Go to Step 6
3
1. Turn the ignition switch to LOCK.
2. With the test light, connected to ground, probe
the ignition feed circuit, at ECM wiring connector
terminal 39.
Does the test light illuminate?
–
Go to Step 4Go to Step 5
4
1. Turn the ignition switch to LOCK.
2. Replace the cluster.
Is the replacement complete?
–
Go to Step 6
–
5
Repair a short to ground or open between the ECM
wiring connector terminal 39 and cluster wiring
connector terminal A7.
Is the repair complete?
–
Go to Step 6
–
6
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 has
run and passed?
–
Go to Step 7Go to Step 2
7
Check if any additional DTCs are set.
Are any DTCs displayed that that have not been
diagnosed?
–
Go to
applicable DTC
table
System OK

1F – 280 ENGINE CONTROLS
DAEWOO M-150 BL2
SYMPTOM DIAGNOSIS
IMPORTANT PRELIMINARY CHECKS
Important: Several symptom procedures call for a care-
ful visual/physical inspection. Always perform the visual/
physical test first. Visual inspections may lead tocorrecting a problem without further checks and can
save valuable time.
StepActionValue(s)YesNo
1
Perform the On-Board Diagnostic (EOBD) System
Check.
Are any Diagnostic Trouble Code(s) (DTCs) stored
in the Engine Control Module (ECM) memory?
–Go to
Appropriate
DTC Table
Go to Step 2
2
1. Inspect all of the ECM ground connections.
2. Inspect all of the vacuum hoses for splits, kinks,
and proper connections.
3. Check for air leaks at all of the mounting areas of
the intake manifold sealing surfaces.
4. Inspect the ignition wires for cracking, hardness,
proper routing, and carbon tracking.
5. Inspect the wiring for proper connections,
pinches, and cuts.
Are all checks complete?
–
Go to
Appropriate
Symptom Table
–

1F–284 ENGINE CONTROLS
DAEWOO M-150 BL2
Hard Start (Cont’d)
StepActionValue(s)YesNo
10
1. Check the fuel injector driver circuit.
2. Disconnect all of the fuel injector harness
connectors at the fuel injectors.
3. Connect an injector test light between the
harness terminals of each fuel injector connector.
4. Note the test light while cranking the engine.
Does the test light blink at all connectors?
–
Go to Step 13Go to Step 11
11
Check the fuel injector driver wiring harness, the
connectors, and the connector terminals for the
proper connections.
Is the problem found?
–
Go to Step 12Go to Step 28
12
Repair the wiring harness, the connector, or the
connector terminal as needed.
Is the repair complete?
–
System OK
–
13
Measure the resistance of each fuel injector.
Is the fuel injector resistance within the value
specified at 20
C (68
F)
Note: The resistance will increase slightly at higher
temperatures)?
11.6–12.4 ΩGo to Step 15Go to Step 14
14
Replace any fuel injector with a resistance that is out
of specifications.
Is the repair complete?
–
System OK
–
15Perform an injector diagnosis.
Is the problem found?–Go to Step 16Go to Step 17
16
Replace any restricted or leaking fuel injectors as
needed.
Is the repair complete?
–
System OK
–
17
1. Check for the proper ignition voltage output for
each cylinder with a spark tester.
2. Inspect the spark plugs for cracks, wear, improper
gap, burned electrodes, or heavy deposits.
3. Inspect the ignition wires for short conditions.
4. Inspect all of the ignition grounds for loose
connections.
5. Inspect the Engine Control Module (ECM) for the
proper operation.
Is the problem found?
–
Go to Step 18Go to Step 19
18Correct or replace any faulty ignition components.
Is the repair complete?–System OK–
19Does the engine misfire or cut out under load or at
idle?–Go to “Ignition
System Check”
Go to Step 20
20Does the engine start, but then immediately stall?–Go to Step 21Go to Step 23
21
1. Remove the Crankshaft Position (CKP) sensor.
2. Inspect for faulty connections and repair as
needed.
Is the problem found?
–
Go to Step 22Go to Step 25
22Repair the faulty connections as needed.
Is the repair complete?–System OK–