Lamp DAEWOO LACETTI 2004 Service Repair Manual

5A2 – 48IAISIN AUTOMATIC TRANSAXLE
DAEWOO V–121 BL4
DTC P0705 Transmission Range (TR) Switch Circuit Malfunction
StepActionValue(s)YesNo
11. Turn the ignition OFF.
2. Install the Scan tool.
3. With the engine OFF, turn the ignition switch to
the ON position.
4. Select Store Freeze Frame/Failure Records
from the Diagnostic Trouble Codes Information
menu.
5. Store Freeze Frame/Failure Records.
6. Select Clear DTC Information from the Diag-
nostic Trouble Codes Information menu.
7. Clear DTC Information.
8. Perform two vehicle drive cycles.
Is the Malfunction Indicator Lamp (MIL) ON?–Go to Step 2Repair the tem-
porary connec-
tion failure of
connector (Re-
fer to ”Wiring
Harness and
Connector In-
spection” in this
section.)
21. Select Request DTC by Status from the Diag-
nostic Trouble Codes Information menu.
2. Request DTC by Status.
Is DTC P0705 displayed?–Go to Step 3Repair the tem-
porary connec-
tion failure of
connector (Re-
fer to ”Wiring
Harness and
Connector In-
spection” in this
section.)
31. Turn the ignition OFF.
2. Inspect the continuity between the vehicle har-
ness and the Transmission Range (TR) Switch.
3. Disconnect the TCM connector (X–1) of the
vehicle harness and inspect the continuity for
the each terminal according to the position of
the select lever.
P : B20
R : B1
N : B8
D : B7
2 : B19
1 : B18
Does the inspection OK?–Go to Step 4Go to Step 5
41. Estimate the failure of between the vehicle wir-
ing harness connector and TCM.
2. Inspect the connector. Refer to ”Wiring Har-
ness and Connector Inspection” in this section.
3. Inspect the connection condition between the
TCM connectors (C–1).
Is the connection condition OK?–Go to Step 6Repair the wir-
ing harness
connectors.
51. Estimate the failure of between the vehicle har-
ness and TR switch.
2. Disconnect the connector (X–2) of the vehicle
harness and inspect the continuity between the
terminals. Refer to ”Wiring Harness and Con-
nector Inspection” in this section.
Is the condition of TR switch OK?–Go to Step 7Replace the TR
switch.

AISIN AUTOMATIC TRANSAXLE 5A2 – 51
DAEWOO V–121 BL4
DTC P0712 Transmission Fluid Temperature (TFT) Sensor Circuit
Low Input
StepActionValue(s)YesNo
11. Turn the ignition OFF.
2. Install the Scan tool.
3. With the engine OFF, turn the ignition switch to
the ON position.
4. Select Store Freeze Frame/Failure Records
from the Diagnostic Trouble Codes Information
menu.
5. Store Freeze Frame/Failure Records.
6. Select Clear DTC Information from the Diag-
nostic Trouble Codes Information menu.
7. Clear DTC Information.
8. Perform one vehicle drive cycle.
Is the Malfunction Indicator Lamp (MIL) ON?–Go to Step 2Repair the tem-
porary connec-
tion failure of
connector (Re-
fer to ”Wiring
Harness and
Connector In-
spection” in this
section.)
21. Select Request DTC by Status from the Diag-
nostic Trouble Codes Information menu.
2. Request DTC by Status.
Is DTC P0712 displayed?–Go to Step 3Repair the tem-
porary connec-
tion failure of
connector (Re-
fer to ”Wiring
Harness and
Connector In-
spection” in this
section.)
31. Turn the ignition OFF.
2. Inspect the resistance between the vehicle har-
ness and Transmission Fluid Temperature
(TFT) sensor. Refer to ”Unit Inspection” in this
section.
3. Disconnect the TCM connector (X–1) and in-
spect the resistance between the terminal A11
and A12.
Is the measurement within the specified value?10°C (50°F):
5.80–7.09 kW
11 0°C (230°F):
0.231–0.263
kWGo to Step 4Go to Step 5
41. Estimate the failure of between the vehicle wir-
ing harness connector and TCM.
2. Inspect the connector. Refer to ”Wiring Har-
ness and Connector Inspection” in this section.
3. Inspect the connection condition between the
connectors (C–1).
Is the connection condition OK?–Go to Step 6Repair the wir-
ing harness
connectors.
51. Estimate the failure of between the vehicle har-
ness and TFT sensor.
2. Disconnect the connector (X–3) of T/M wire
and inspect the resistance between TFT sen-
sor connector terminal 1 and 6.
Is the measurement within the specified value?10°C (50°F):
5.80–7.09 kW
11 0°C (230°F):
0.231–0.263
kWGo to Step 7Go to Step 8

5A2 – 54IAISIN AUTOMATIC TRANSAXLE
DAEWOO V–121 BL4
DTC P0713 Transmission Fluid Temperature (TFT) Sensor Circuit
High Input
StepActionValue(s)YesNo
11. Turn the ignition OFF.
2. Install the Scan tool.
3. With the engine OFF, turn the ignition switch to
the ON position.
4. Select Store Freeze Frame/Failure Records
from the Diagnostic Trouble Codes Information
menu.
5. Store Freeze Frame/Failure Records.
6. Select Clear DTC Information from the Diag-
nostic Trouble Codes Information menu.
7. Clear DTC Information.
8. Perform one vehicle drive cycle.
Is the Malfunction Indicator Lamp (MIL) ON?–Go to Step 2Repair the tem-
porary connec-
tion failure of
connector (Re-
fer to ”Wiring
Harness and
Connector In-
spection” in this
section.)
21. Select Request DTC by Status from the Diag-
nostic Trouble Codes Information menu.
2. Request DTC by Status.
Is DTC P0713 displayed?–Go to Step 3Repair the tem-
porary connec-
tion failure of
connector (Re-
fer to ”Wiring
Harness and
Connector In-
spection” in this
section.)
31. Turn the ignition OFF.
2. Inspect the resistance between the vehicle har-
ness and Transmission Fluid Temperature
(TFT) sensor. Refer to ”Unit Inspection” in this
section.
3. Disconnect the TCM connector (X–1) and in-
spect the resistance between the terminal A11
and A12.
Is the measurement within the specified value?10°C (50°F):
5.80–7.09 kW
11 0°C (230°F):
0.231–0.263
kWGo to Step 4Go to Step 5
41. Estimate the failure of between the vehicle wir-
ing harness connector and TCM.
2. Inspect the connector. Refer to ”Wiring Har-
ness and Connector Inspection” in this section.
3. Inspect the connection condition between the
connectors (C–1).
Is the connection condition OK?–Go to Step 6Repair the wir-
ing harness
connectors.
51. Estimate the failure of between the vehicle har-
ness and TFT sensor.
2. Disconnect the connector (X–3) of T/M wire
and inspect the resistance between TFT sen-
sor connector terminal 1 and 6.
Is the measurement within the specified value?10°C (50°F):
5.80–7.09 kW
11 0°C (230°F):
0.231–0.263
kWGo to Step 7Go to Step 8

AISIN AUTOMATIC TRANSAXLE 5A2 – 57
DAEWOO V–121 BL4
DTC P0717 Input Shaft Speed (ISS) Sensor Circuit No Signal
StepActionValue(s)YesNo
11. Turn the ignition OFF.
2. Install the Scan tool.
3. With the engine OFF, turn the ignition switch to
the ON position.
4. Select Store Freeze Frame/Failure Records
from the Diagnostic Trouble Codes Information
menu.
5. Store Freeze Frame/Failure Records.
6. Select Clear DTC Information from the Diag-
nostic Trouble Codes Information menu.
7. Clear DTC Information.
8. Perform one vehicle drive cycle.
Is the Malfunction Indicator Lamp (MIL) ON?–Go to Step 2Repair the tem-
porary connec-
tion failure of
connector (Re-
fer to ”Wiring
Harness and
Connector” in
this section.)
21. Select Request DTC by Status from the Diag-
nostic Trouble Codes Information menu.
2. Request DTC by Status.
Is DTC P0717 displayed?–Go to Step 3Repair the tem-
porary connec-
tion failure of
connector (Re-
fer to ”Wiring
Harness and
Connector” in
this section.)
31. Turn the ignition OFF.
2. Inspect the resistance between the vehicle har-
ness and Input Shaft Speed (ISS) sensor. Re-
fer to”Unit Inspection” in this section.
3. Disconnect the TCM connector (X–1) and in-
spect the resistance between the terminal B6
and B16.
Is the measurement within the specified value?20°C (68°F):
560–680 WGo to Step 4Go to Step 5
41. Estimate the failure of between the vehicle wir-
ing harness connector and TCM.
2. Inspect the connector. Refer to ”Wiring Har-
ness and Connector Inspection” in this section.
3. Inspect the connection condition between the
connectors (C–1).
Is the connection condition OK?–Go to Step 6Repair the wir-
ing harness
connectors.
51. Estimate the failure of T/M wire or between the
connectors of ISS sensor.
2. Disconnect the ISS sensor connector (X–5)
and inspect the resistance between terminals 1
and 2.
Is the measurement within the specified value?20°C (68°F):
560–680WGo to Step 7Replace the
ISS sensor

5A2 – 60IAISIN AUTOMATIC TRANSAXLE
DAEWOO V–121 BL4
DTC P0722 Output Shaft Speed (OSS) sensor Circuit No Signal
StepActionValue(s)YesNo
11. Turn the ignition OFF.
2. Install the Scan tool.
3. With the engine OFF, turn the ignition switch to
the ON position.
4. Select Store Freeze Frame/Failure Records
from the Diagnostic Trouble Codes Information
menu.
5. Store Freeze Frame/Failure Records.
6. Select Clear DTC Information from the Diag-
nostic Trouble Codes Information menu.
7. Clear DTC Information.
8. Perform one vehicle drive cycle.
Is the Malfunction Indicator Lamp (MIL) ON?–Go to Step 2Repair the tem-
porary connec-
tion failure of
connector (Re-
fer to ”Wiring
Harness and
Connector In-
spection” in this
section.)
21. Select Request DTC by Status from the Diag-
nostic Trouble Codes Information menu.
2. Request DTC by Status.
Is DTC P0722 displayed?–Go to Step 3Repair the tem-
porary connec-
tion failure of
connector (Re-
fer to ”Wiring
Harness and
Connector In-
spection” in this
section.)
31. Turn the ignition OFF.
2. Inspect the voltage between vehicle harness
and the Output Shaft Speed (OSS) sensor.
3. Disconnect the connector (X–1) of the vehicle
harness.
4. Connect the voltmeter to monitor the voltage
between terminal B25 and ground.
5. Turn ignition ON and lift up the vehicle.
6. Check the voltage change from approximately
0 v to 12 v when the wheel is turned slowly.
Does the measurement change within the specified
value?0–12 vGo to Step 4Go to Step 5
41. Estimate the failure of between the vehicle wir-
ing harness connector and TCM.
2. Inspect the connector. Refer to ”Wiring Har-
ness and Connector Inspection” in this section.
3. Inspect the connection condition between the
connectors (C–1).
Is the connection condition OK?–Go to Step 6Repair the wir-
ing harness
connectors.
51. Estimate the failure of T/M wire or between the
connectors of OSS sensor.
2. Inspect the OSS sensor. Refer to ”Unit Inspec-
tion” in this section
Is the condition of OSS sensor OK?–Go to Step 7Replace the
OSS sensor

AISIN AUTOMATIC TRANSAXLE 5A2 – 63
DAEWOO V–121 BL4
DTC P0727 Engine Speed Input Circuit No Signal
StepActionValue(s)YesNo
11. Turn the ignition OFF.
2. Install the Scan tool.
3. With the engine OFF, turn the ignition switch to
the ON position.
4. Select Store Freeze Frame/Failure Records
from the Diagnostic Trouble Codes Information
menu.
5. Store Freeze Frame/Failure Records.
6. Select Clear DTC Information from the Diag-
nostic Trouble Codes Information menu.
7. Clear DTC Information.
8. Perform one vehicle drive cycle.
Is the Malfunction Indicator Lamp (MIL) ON?–Go to Step 2Repair the tem-
porary connec-
tion failure of
connector.
21. Select Request DTC by Status from the Diag-
nostic Trouble Codes Information menu.
2. Request DTC by Status.
Is DTC P0727 displayed?–Go to Step 3Repair the tem-
porary connec-
tion failure of
connector.
31. Turn the ignition OFF.
2. Disconnect the TCM wiring connector and
ECM wiring connector.
3. Measure the resistance between terminal A17
of the TCM wiring connector and terminal 88 of
the ECM wiring connector.
4. Measure the resistance between terminal A7 of
the TCM wiring connector and terminal 57 of
the ECM wiring connector.
Is the resistance within the values shown?0 WGo to Step 5Go to Step 4
4Repair the malfunctioning terminals as necessary.
Is the action complete?–System OK–
51. Turn the ignition ON.
2. Measure the voltage of terminal A17.
3. Measure the voltage of terminal A7.
Is the voltage within the values shown?11–14 vGo to Step 6Go to Step 7
6Repair the malfunctioning terminals as necessary.
Is the action complete?–System OK–
71. Inspect the ”Engine Speed”. Refer to Section
1F, Diagnosis.
Was a problem found?–Refer to Sec-
tion 1F, Diagno-
sis.Go to Step 8
81. Replace the TCM.
2. Turn the ignition OFF.
3. Turn the ignition ON.
4. Check if P0727 DTC is set.
Is the DTC set?–Go to Step 9Go to Step 10

5A2 – 66IAISIN AUTOMATIC TRANSAXLE
DAEWOO V–121 BL4
DTC P0741 Torque Converter Clutch (TCC) Circuit Stuck Off
StepActionValue(s)YesNo
11. Turn the ignition OFF.
2. Install the Scan tool.
3. With the engine OFF, turn the ignition switch to
the ON position.
4. Select Store Freeze Frame/Failure Records
from the Diagnostic Trouble Codes Information
menu.
5. Store Freeze Frame/Failure Records.
6. Select Clear DTC Information from the Diag-
nostic Trouble Codes Information menu.
7. Clear DTC Information.
8. Perform two vehicle drive cycles.
Is the Maifunction Indicator Lamp (MIL) ON?–Go to Step 2Repair the tem-
porary connec-
tion failure of
connector (Re-
fer to ”Wiring
Harness and
Connector In-
spection” in this
section.)
21. Select Request DTC by Status from the Diag-
nostic Trouble Codes Information menu.
2. Request DTC by Status.
Is DTC P0741 displayed?–Go to Step 3Repair the tem-
porary connec-
tion failure of
connector (Re-
fer to ”Wiring
Harness and
Connector In-
spection” in this
section.)
31. Turn the ignition OFF.
2. Replace the master TCM and perform simula-
tion test again under user condition.
Is DTC P0741 reappeared?–Go to Step 4Replace the
TCM
41. Estimate the failure of lockup solenoid, lockup
clutch or internal valve body.
2. Inspect the lockup solenoid. Refer to ”Unit In-
spection” in this section.
Is the condition of lockup solenoid OK?–Go to Step 5Replace lockup
solenoid
51. Estimate the failure of lockup clutch or internal
valve body.
Is problem found?–Replace the
valve body as-
semblySystem OK

5A2 – 68IAISIN AUTOMATIC TRANSAXLE
DAEWOO V–121 BL4
DTC P0742 Torque Converter Clutch (TCC) Circuit Stuck On
StepActionValue(s)YesNo
11. Turn the ignition OFF.
2. Install the Scan tool.
3. With the engine OFF, turn the ignition switch to
the ON position.
4. Select Store Freeze Frame/Failure Records
from the Diagnostic Trouble Codes Information
menu.
5. Store Freeze Frame/Failure Records.
6. Select Clear DTC Information from the Diag-
nostic Trouble Codes Information menu.
7. Clear DTC Information.
8. Perform two vehicle drive cycles.
Is the Malfunction Indicator Lamp (MIL) ON?–Go to Step 2Repair the tem-
porary connec-
tion failure of
connector (Re-
fer to ”Wiring
Harness and
Connector” in
this section.)
21. Select Request DTC by Status from the Diag-
nostic Trouble Codes Information menu.
2. Request DTC by Status.
Is DTC P0742 displayed?–Go to Step 3Repair the tem-
porary connec-
tion failure of
connector (Re-
fer to ”Wiring
Harness and
Connector” in
this section.)
31. Turn the ignition OFF.
2. Replace the master TCM and perform simula-
tion test again under user condition.
Is DTC P0742 reappeared?–Go to Step 4Replace the
TCM
41. Estimate the failure of lockup solenoid, lockup
clutch or internal valve body.
2. Inspect the lockup solenoid. Refer to ”Unit In-
spection” in this section.
Is the condition of lockup solenoid OK?–Go to Step 5Replace lockup
solenoid
51. Estimate the failure of lockup clutch or internal
valve body.
Is problem found?–Replace the
valve body as-
semblySystem OK

5A2 – 70IAISIN AUTOMATIC TRANSAXLE
DAEWOO V–121 BL4
DTC P0743 Torque Converter Clutch (TCC) Electrical
StepActionValue(s)YesNo
11. Turn the ignition OFF.
2. Install the Scan tool.
3. With the engine OFF, turn the ignition switch to
the ON position.
4. Select Store Freeze Frame/Failure Records
from the Diagnostic Trouble Codes Information
menu.
5. Store Freeze Frame/Failure Records.
6. Select Clear DTC Information from the Diag-
nostic Trouble Codes Information menu.
7. Clear DTC Information.
8. Perform two vehicle drive cycles.
Is the Malfunction Indicator Lamp (MIL) ON?–Go to Step 2Repair the tem-
porary connec-
tion failure of
connector (Re-
fer to ”Wiring
Harness and
Connector In-
spection” in this
section.)
21. Select Request DTC by Status from the Diag-
nostic Trouble Codes Information menu.
2. Request DTC by Status.
Is DTC P0743 displayed?–Go to Step 3Repair the tem-
porary connec-
tion failure of
connector (Re-
fer to ”Wiring
Harness and
Connector In-
spection” in this
section.)
31. Turn the ignition OFF.
2. Inspect the resistance between the vehicle har-
ness and lock–up solenoid. Refer to ”Unit In-
spection” in this section.
3. Disconnect the TCM connector (X–1) and in-
spect the resistance between the terminal A5
and A23.
Is the measurement within the specified value?20°C (68°F)
11–16 WGo to Step 4Go to Step 5
41. Estimate the failure of between the vehicle wir-
ing harness connector and TCM.
2. Inspect the connector. Refer to ”Wiring Har-
ness and Connector Inspection” in this section.
3. Inspect the connection condition between the
connectors (C–1).
Is the connection condition OK?–Go to Step 6Repair the wir-
ing harness
connectors.
51. Estimate the failure of between the vehicle har-
ness and lockup solenoid.
2. Disconnect the connector (X–3) of T/M wire
and inspect the resistance between lock–up
solenoid connector terminal 4 and ground.
Is the measurement within the specified value?20°C (68°F)
11–16 WGo to Step 7Go to Step 8
61. Replace the master TCM.
2. Perform the reproducing test under user condi-
tion after confirming no DTC.
Is DTC displayed?–Repair the tem-
porary connec-
tion failure of
connector (Re-
fer to ”Wiring
Harness and
Connector In-
spection” in this
section.)Replace the
TCM

AISIN AUTOMATIC TRANSAXLE 5A2 – 73
DAEWOO V–121 BL4
DTC P0748 Pressure Control Solenoid (PCS) Electrical
StepActionValue(s)YesNo
11. Turn the ignition OFF.
2. Install the Scan tool.
3. With the engine OFF, turn the ignition switch to
the ON position.
4. Select Store Freeze Frame/Failure Records
from the Diagnostic Trouble Codes Information
menu.
5. Store Freeze Frame/Failure Records.
6. Select Clear DTC Information from the Diag-
nostic Trouble Codes Information menu.
7. Clear DTC Information.
8. Perform one vehicle drive cycle.
Is the Malfunction Indicator Lamp (MIL) ON?–Go to Step 2Repair the tem-
porary connec-
tion failure of
connector (Re-
fer to ”Wiring
Harness and
Connector” in
this section.)
21. Select Request DTC by Status from the Diag-
nostic Trouble Codes Information menu.
2. Request DTC by Status.
Is DTC P0748 displayed?–Go to Step 3Repair the tem-
porary connec-
tion failure of
connector (Re-
fer to ”Wiring
Harness and
Connector” in
this section.)
31. Turn the ignition OFF.
2. Inspect the resistance between the vehicle har-
ness and Pressure Control Solenoid (PCS).
Refer to ”Unit Inspection” in this section.
3. Disconnect the TCM connector (X–1) and in-
spect the resistance between the terminal A4
and A2.
Is the measurement within the specified value?20°C (68°F)
5.0–5.6 WGo to Step 4Go to Step 5
41. Estimate the failure of between the vehicle wir-
ing harness connector and TCM.
2. Inspect the connector. Refer to ”Wiring Har-
ness and Connector” in this section.
3. Inspect the connection condition between the
connectors (C–1).
Is the connection condition OK?–Go to Step 6Repair the wir-
ing harness
connectors.
51. Estimate the failure of between the vehicle har-
ness and PCS.
2. Disconnect the connector (X–3) of T/M wire
and inspect the resistance between PCS con-
nector terminal 3 and 8.
Is the measurement within the specified value?20°C (68°F)
5.0–5.6 WGo to Step 7Go to Step 8
61. Replace the master TCM.
2. Perform the reproducing test under user condi-
tion after confirming no DTC.
Is DTC displayed?–Repair the tem-
porary connec-
tion failure of
connector (Re-
fer to ”Wiring
Harness and
Connector” in
this section.)Replace the
TCM