2003 DAEWOO MATIZ OBD port

ENGINE CONTROLS 1F–273
DAEWOO M-150 BL2
DTC P1629 – Immobilizer Wrong Computation
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 OFF.
2. Install a scan too to the Data Link Connector
(DLC).
3. Turn the ignition ON.
4. Select IMMOBILIZER DIAGNOSIS STATUS from
the scan tool menu.
Is the communication established between the scan
tool and the immobilizer control unit?
–
Go to Step 3
Go to Section
9T, Immobilizer
Anti-Theft
System
3
1. Turn the ignition OFF.
2. Disconnect the Immobilizer Control Unit and
Engine Control Module (ECM) connectors.
3. Measure the resistance between terminal 7 of
immoblizer control unit and terminal 56 of the
ECM.
Is the resistance within the specified value?
0 ΩGo to Step 5Go to Step 4
4
Repair an open circuit between terminal 7 of
immobilizer control unit and terminal 56 of the ECM.
Is the repair complete?
–
Go to Step 8
–
5
Check the terminals in immobilizer control unit and
the ECM for damages and repair as needed.
Is the repair complete?
–
Go to Step 8Go to Step 6
6Replace the immobilizer control unit.
Is the repair complete?–Go to Step 8Go to Step 7
7
1. Turn the ignition OFF.
2. Replace the ECM.
Is the repair complete?
–
Go to Step 8
–
8
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 9Go to Step 2
9
Check if any additional DTCs are set.
Are any DTCs displayed that have not been
diagnosed?
–
Go to
Applicable DTC
Table
System OK

ENGINE CONTROLS 1F–275
DAEWOO M-150 BL2
DTC P0656 – Fuel Level Gauge Circuit Fault
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. connect the scan tool to the DLC.
3. Turn the Turn the ignition switch to ON.
Are any Diagnostic Trouble Codes (DTCs)
displayed?
–
Go to Step 3
Try with
another scan
tool
3
Refer to the applicable DTC table. Start with the
DTC with the lowest numerical value and move up.
Is the DTC identified as valid trouble code P0656?
–
Go to Step 4
Go to
applicable DTC
table
4
1. Disconnect the cluster connector
2. Turn the ignition switch to LOCK.
3. Check for an open or short to ground in the wire
between the cluster connector terminal C14 and
ground.
Is the problem found?
–
Go to Step 6Go to Step 5
5
1. Turn the ignition switch to LOCK.
2. Check for short to battery in the wire between the
the cluster connector terminal C14 and ground.
Is the problem found?
–
Go to Step 6Go to Step 7
6
1. Change the between cluster and ECM or repair
the connector terminal as needed.
2. Clear any DTCs from ECM.
3. Perform the diagnostic system check.
Is the repair complete?
–
System OK
–
7
1. Replace the cluster.
2. Clear any DTCs from ECM.
3. Perform the diagnostic system check.
Are any Diagnostic Trouble Codes (DTCs)
displayed?
–
Go to Step 8System OK
8Replace the ECM.
Is the replcement complete?–Go to Step 9–
9
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 10Go to Step 2
10
Check if any additional DTCs are set.
Are any DTCs displayed that that have not been
diagnosed?
–
Go to
applicable DTC
table
System OK

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

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
–