2004 DAEWOO NUBIRA high idle speed

5A1 – 56IZF 4 HP 16 AUTOMATIC TRANSAXLE
DAEWOO V–121 BL4
SYMPTOM DIAGNOSIS
Oil Leakage
Notice :
– Careful localization of leakage points may make it
possible to prevent incorrect or cost–intensive re-
pairs.
Test Steps :– Thoroughly clean the transaxle, engine, and sur-
rounding area(using a steam jet, for example).
– To locate leakage, use a suitable identifying spray
or similar product.
– Depending on the amount of leakage, take the
car for a short or a longer test drive – It may prove
sufficient to place the car on a hoist and run the
engine at idle speed to trace the leak.
– If possible, determine exactly which type of oil is
escaping.
Symptom
Possible CauseAction
Transaxle Oil Leak-
ageOil Pump(Torque Converter Sealing)S Visually check torque converter sealing.
S Replace the converter sealing as described in
the transaxle repair on the vehicle service.
Crankshaft Sealing RingS Check whether engine oil or TFT is leaking out.
S If leak is engine oil, replace the sealing ring as
described in the engine repair instruction.
Torque ConverterS Visual check.
S Fit an exchange converter as described in the
repair instruction.
Oil Content Too HighS Check oil level(TFT and axle oil) as described
in this chapter.
S Correct oil level, and recheck after a test drive.
Notice : Comply with the measuring procedure (fill-
ing procedure) in the repair instruction. Check the oil
level at the overflow plug adjust to proper level if nec-
essary.
O–ring at Bolt Head Damaged or Miss-
ingS Check O–ring.
S Replace O–ring as described in the repair in-
struction.
Shaft SealS Visually check the shaft seal.
S Replace the sealing ring as described in the
repair instruction.
Hose Clamp LooseS Check to ensure that the hose clamp fits tightly.
S If necessary, retighten clamp.
Oil Pan Gasket Not Installed ProperlyS Check to see if the gasket was positioned
properly.
S Install gasket properly as described in the re-
pair instruction.
Oil Pan Gasket DamagedS Check the gasket visually.
S Replace gasket as described in the repair in-
struction.
Bolt at Bracket LooseCheck the Tightening Torque
Retighten bolt
Sealing Ring at Oil DipstickS Check O–ring.
S If necessary, replace O–ring.
Sealing Ring Near End–Cover Connec-
tion DefectiveS Check sealing rings.
S Put in new sealing ring Check O–ring as de-
scribed in the repair instruction.

ZF 4 HP 16 AUTOMATIC TRANSAXLE 5A1 – 125
DAEWOO V–121 BL4
S No input speed error DTCs P0715, P0716, and
P0717.
S Output speed is greater than 256 rpm.
S Input speed is greater than 400 rpm.
S 1–2 gear shift is active.
S Immediately after the above condition occurs.
Action Taken When The DTC Sets
S The Malfunction Indicator Lamp(MIL) will illuminate.
S The TCM will record operating conditions at the
time the diagnostic fails. This information will be
stored in the Failure Records buffer.
S Adopt Emergency/ Substitute mode and constant
1st gear.S Open lock up clutch.
Conditions for Clearing the MIL/DTC
S The MIL will turn OFF when the malfunction has
not occurred after three–ignition cycle.
S A history DTC will clear after 40 consecutive warm
up cycles without a fault.
S Using a scan tool can clear history DTCs.
Diagnostic Aids
S When DTC P0781 sets, the possible cause of fault
could be TCM.
DTC P0781 – 1–2 Shift Malfunction
StepActionValue(s)YesNo
1Perform an On–Board Diagnostic (EOBD) System
Check.
Is the check completed?–Go to Step 2Go to ”On–
Board Diagnos-
tic System
Check”
21. Install the scan tool.
2. Turn the ignition ON, with the engine OFF.
3. Start engine and allow it to warm up at idle.
4. Observe ”idle rpm, TPS” on the scan tool.
Was condition found and corrected?–Refer to ”En-
gine diagnostic
information”Go to Step 3
3Inspect ”ECM”. Refer to Section 1F, System Diagno-
sis, EOBD System Check.
Was a problem found?–Go to ”Section
1F, System
Diagnosis”Go to Step 4
41. Turn the ignition OFF.
2. Disconnect the TCM wiring connector.
3. Measure the voltage between terminal B3 and
B13 of the transaxle wiring connector.
4. Turn the ignition ON.
5. Measure the voltage between terminal C15 and
B13 of the transaxle wiring connector.
6. Measure the voltage between terminal C16 and
B13 of the transaxle wiring connector.
Is the voltage within the values shown?11–14VGo to Step 5Go to ”System
voltage low or
high”
5Replace the TCM.
Is the action complete?–Go to Step 6–
61. After the repair, use a scan tool ”clear info”
function and road test the vehicle.
2. Review the ”DTC info”.
Has the last test failed or is the current DTC dis-
played?–Replace the
transaxle as-
semblyRepair verified
exit DTC chart

ZF 4 HP 16 AUTOMATIC TRANSAXLE 5A1 – 127
DAEWOO V–121 BL4
S No input speed error DTCs P0715, P0716, and
P0717.
S Output speed is greater than 256 rpm.
S Input speed is greater than 400 rpm.
S 2–3 gear shift is active.
S Immediately after the above condition occurs.
Action Taken When The DTC Sets
S The Malfunction Indicator Lamp(MIL) will illuminate.
S The TCM will record operating conditions at the
time the diagnostic fails. This information will be
stored in the Failure Records buffer.
S Adopt Emergency/ Substitute mode and constant
2nd gear.S Open lock up clutch.
Conditions for Clearing the MIL/DTC
S The MIL will turn OFF when the malfunction has
not occurred after three–ignition cycle.
S A history DTC will clear after 40 consecutive warm
up cycles without a fault.
S Using a scan tool can clear history DTCs.
Diagnostic Aids
S When DTC P0782 sets, the possible cause of fault
could be TCM.
DTC P0782 – 2–3 Shift Malfunction
StepActionValue(s)YesNo
1Perform an On–Board Diagnostic (EOBD) System
Check.
Is the check completed?–Go to Step 2Go to ”On–
Board Diagnos-
tic System
Check”
21. Install the scan tool.
2. Turn the ignition ON, with the engine OFF.
3. Start engine and allow it to warm up at idle.
4. Observe ”idle rpm, TPS and so on” the scan
tool.
Was condition found and corrected?–Refer to ”En-
gine diagnostic
information”Go to Step 3
3Inspect ”ECM”. Refer to Section 1F, System Diagno-
sis, EOBD System Check.
Was a problem found?–Go to ”Section
1F, System
Diagnosis”Go to Step 4
41. Turn the ignition OFF.
2. Disconnect the TCM wiring connector.
3. Measure the voltage between terminal B3 and
B13 of the transaxle wiring connector.
4. Turn the ignition ON.
5. Measure the voltage between terminal C15 and
B13 of the transaxle wiring connector.
6. Measure the voltage between terminal C16 and
B13 of the transaxle wiring connector.
Is the voltage within the values shown?11–14VGo to Step 5Go to ”System
voltage low or
high”
5Replace the TCM.
Is the action complete?–Go to Step 6–
61. After the repair, use a scan tool ”clear info”
function and road test the vehicle.
2. Review the ”DTC info”.
Has the last test failed or is the current DTC dis-
played?–Replace the
transaxle as-
semblyRepair verified
exit DTC chart

ZF 4 HP 16 AUTOMATIC TRANSAXLE 5A1 – 129
DAEWOO V–121 BL4
S No input speed error DTCs P0715, P0716, and
P0717.
S Output speed is greater than 256 rpm.
S Input speed is greater than 400 rpm.
S 3–4 gear shift is active.
S Immediately after the above condition occurs.
Action Taken When The DTC Sets
S The Malfunction Indicator Lamp(MIL) will illuminate.
S The TCM will record operating conditions at the
time the diagnostic fails. This information will be
stored in the Failure Records buffer.
S Adopt Emergency/ Substitute mode and constant
3rd gear.S Open lock up clutch.
Conditions for Clearing the MIL/DTC
S The MIL will turn OFF when the malfunction has
not occurred after three–ignition cycle.
S A history DTC will clear after 40 consecutive warm
up cycles without a fault.
S Using a scan tool can clear history DTCs.
Diagnostic Aids
S When DTC P0783 sets, the possible cause of fault
could be T/M.
DTC P0783 – 3–4 Shift Malfunction
StepActionValue(s)YesNo
1Perform an On–Board Diagnostic (EOBD) System
Check.
Is the check completed?–Go to Step 2Go to ”On–
Board Diagnos-
tic System
Check”
21. Install the scan tool.
2. Turn the ignition ON, with the engine OFF.
3. Start engine and allow it to warm up at idle.
4. Observe ”idle rpm, TPS and so on” the scan
tool.
Was condition found and corrected?–Refer to ”En-
gine diagnostic
information”Go to Step 3
3Inspect ”ECM”. Refer to Section 1F, System Diagno-
sis, EOBD System Check.
Was a problem found?–Go to ”Section
1F, System
Diagnosis”Go to Step 4
41. Turn the ignition OFF.
2. Disconnect the TCM wiring connector.
3. Measure the voltage between terminal B3 and
B13 of the transaxle wiring connector.
4. Turn the ignition ON.
5. Measure the voltage between terminal C15 and
B13 of the transaxle wiring connector.
6. Measure the voltage between terminal C16 and
B13 of the transaxle wiring connector.
Is the voltage within the values shown?11–14VGo to Step 5Go to ”System
voltage low or
high”
5Replace the TCM.
Is the action complete?–Go to Step 6–
61. After the repair, use a scan tool ”clear info”
function and road test the vehicle.
2. Review the ”DTC info”.
Has the last test failed or is the current DTC dis-
played?–Replace the
transaxle as-
semblyRepair verified
exit DTC chart

ZF 4 HP 16 AUTOMATIC TRANSAXLE 5A1 – 181
DAEWOO V–121 BL4
S No input speed error DTCs P0715, P0716, or
P0717.
S Output speed is greater than 256 rpm.
S Input speed is greater than 400 rpm.
S 2–1 gear shift is active.
S Immediately after the above condition occurs.
Action Taken When The DTC Sets
S The Malfunction Indicator Lamp(MIL) will illuminate.
S The TCM will record operating conditions at the
time the diagnostic fails. This information will be
stored in the Failure Records buffer.
S Adopt Emergency/ Substitute mode and constant
3rd gear.S Open lock–up clutch.
Conditions for Clearing the MIL/DTC
S The MIL will turn OFF when the malfunction has
not occurred after three–ignition cycle.
S A history DTC will clear after 40 consecutive warm
up cycles without a fault.
S Using a scan tool can clear history DTCs.
Diagnostic Aids
S When DTC P1881 sets, the possible cause of fault
could be TCM.
DTC P1881 – 2–1 Shift Malfunction
StepActionValue(s)YesNo
1Perform an On–Board Diagnostic (EOBD) System
Check.
Is the check completed?–Go to Step 2Go to ”On–
Board Diagnos-
tic System
Check”
21. Install the scan tool.
2. Turn the ignition ON, with the engine OFF.
Then, start engine and allow it to warm up at
idle.
3. Observe ”idle rpm, TPS” on the scan tool.
Was a problem found?–Go to ”Engine
Diagnostic In-
formation”Go to Step 3
3Inspect ”ECM”. Refer to Section 1F, System Diagno-
sis, EOBD System Check.
Was a problem found?–Go to ”Engine
Diagnostic In-
formation”Go to Step 4
41. Turn the ignition OFF.
2. Disconnect the TCM wiring connector.
3. Measure the voltage between terminal B3 and
B13 of the transaxle wiring connector.
4. Turn the ignition ON.
5. Measure the voltage between terminal C15 and
B13 of the transaxle wiring connector.
6. Measure the voltage between terminal C16 and
B13 of the transaxle wiring connector.
Is the voltage within the values shown?11–14VGo to Step 5Go to ”System
Voltage Low or
High”
5Replace the TCM.
Is the action complete?–Go to Step 6–
61. After the repair, use a scan tool ”clear info”
function and road test the vehicle.
2. Review the ”DTC info”.
Has the last test failed or is the current DTC dis-
played?–Replace the
transaxle as-
semblyRepair verified
exit DTC chart

ZF 4 HP 16 AUTOMATIC TRANSAXLE 5A1 – 183
DAEWOO V–121 BL4
S No input speed error DTCs P0715, P0716, or
P0717.
S Output speed is greater than 256 rpm.
S Input speed is greater than 400 rpm.
S 3–2 gear shift is active.
S Immediately after the above condition occurs.
Action Taken When The DTC Sets
S The Malfunction Indicator Lamp(MIL) will illuminate.
S The TCM will record operating conditions at the
time the diagnostic fails. This information will be
stored in the Failure Records buffer.
S Adopt Emergency/ Substitute mode and constant
3rd gear.S Open lock–up clutch.
Conditions for Clearing the MIL/DTC
S The MIL will turn OFF when the malfunction has
not occurred after three–ignition cycle.
S A history DTC will clear after 40 consecutive warm
up cycles without a fault.
S Using a scan tool can clear history DTCs.
Diagnostic Aids
S When DTC P1883 sets, the possible cause of fault
could be TCM.
DTC P1883 – 3–2 Shift Malfunction
StepActionValue(s)YesNo
1Perform an On–Board Diagnostic (EOBD) System
Check.
Is the check completed?–Go to Step 2Go to ”On–
Board Diagnos-
tic System
Check”
21. Install the scan tool.
2. Turn the ignition ON, with the engine OFF.
Then, start engine and allow it to warm up at
idle.
3. Observe ”idle rpm, TPS” on the scan tool.
Was a problem found?–Go to ”Engine
Diagnostic In-
formation”Go to Step 3
3Inspect ”ECM”. Refer to Section 1F, System Diagno-
sis, EOBD System Check.
Was a problem found?–Go to ”Engine
Diagnostic In-
formation”Go to Step 4
41. Turn the ignition OFF.
2. Disconnect the TCM wiring connector.
3. Measure the voltage between terminal B3 and
B13 of the transaxle wiring connector.
4. Turn the ignition ON.
5. Measure the voltage between terminal C15 and
B13 of the transaxle wiring connector.
6. Measure the voltage between terminal C16 and
B13 of the transaxle wiring connector.
Is the voltage within the values shown?11–14VGo to Step 5Go to ”System
Voltage Low or
High”
5Replace the TCM.
Is the action complete?–Go to Step 6–
61. After the repair, use a scan tool ”clear info”
function and road test the vehicle.
2. Review the ”DTC info”.
Has the last test failed or is the current DTC dis-
played?–Replace the
transaxle as-
semblyRepair verified
exit DTC chart

ZF 4 HP 16 AUTOMATIC TRANSAXLE 5A1 – 185
DAEWOO V–121 BL4
S No input speed error DTCs P0715, P0716, or
P0717.
S Output speed is greater than 256 rpm.
S Input speed is greater than 400 rpm.
S 4–3 gear shift is active.
S Immediately after the above condition occurs.
Action Taken When The DTC Sets
S The Malfunction Indicator Lamp(MIL) will illuminate.
S The TCM will record operating conditions at the
time the diagnostic fails. This information will be
stored in the Failure Records buffer.
S Adopt Emergency/ Substitute mode and constant
4th gear.S Open lock–up clutch.
Conditions for Clearing the MIL/DTC
S The MIL will turn OFF when the malfunction has
not occurred after three–ignition cycle.
S A history DTC will clear after 40 consecutive warm
up cycles without a fault.
S Using a scan tool can clear history DTCs.
Diagnostic Aids
S When DTC P1884 sets, the possible cause of fault
could be TCM.
DTC P1884 – 4–3 Shift Malfunction
StepActionValue(s)YesNo
1Perform an On–Board Diagnostic (EOBD) System
Check.
Is the check completed?–Go to Step 2Go to ”On–
Board Diagnos-
tic System
Check”
21. Install the scan tool.
2. Turn the ignition ON, with the engine OFF.
Then, start engine and allow it to warm up at
idle.
3. Observe ”idle rpm, TPS” on the scan tool.
Was a problem found?–Go to ”Engine
Diagnostic In-
formation”Go to Step 3
3Inspect ”ECM”. Refer to Section 1F, System Diagno-
sis, EOBD System Check.
Was a problem found?–Go to ”Engine
Diagnostic In-
formation”Go to Step 4
41. Turn the ignition OFF.
2. Disconnect the TCM wiring connector.
3. Measure the voltage between terminal B3 and
B13 of the transaxle wiring connector.
4. Turn the ignition ON.
5. Measure the voltage between terminal C15 and
B13 of the transaxle wiring connector.
6. Measure the voltage between terminal C16 and
B13 of the transaxle wiring connector.
Is the voltage within the values shown?11–14VGo to Step 5Go to ”System
Voltage Low or
High”
5Replace the TCM.
Is the action complete?–Go to Step 6–
61. After the repair, use a scan tool ”clear info”
function and road test the vehicle.
2. Review the ”DTC info”.
Has the last test failed or is the current DTC dis-
played?–Replace the
transaxle as-
semblyRepair verified
exit DTC chart

ZF 4 HP 16 AUTOMATIC TRANSAXLE 5A1 – 187
DAEWOO V–121 BL4
S No input speed error DTCs P0715, P0716, or
P0717.
S Output speed is greater than 256 rpm.
S Input speed is greater than 400 rpm.
S 3–1 gear shift is active.
S Immediately after the above condition occurs.
Action Taken When The DTC Sets
S The Malfunction Indicator Lamp(MIL) will illuminate.
S The TCM will record operating conditions at the
time the diagnostic fails. This information will be
stored in the Failure Records buffer.
S Adopt Emergency/ Substitute mode and constant
3rd gear.S Open lock–up clutch.
Conditions for Clearing the MIL/DTC
S The MIL will turn OFF when the malfunction has
not occurred after three–ignition cycle.
S A history DTC will clear after 40 consecutive warm
up cycles without a fault.
S Using a scan tool can clear history DTCs.
Diagnostic Aids
S When DTC P1885 sets, the possible cause of fault
could be TCM.
DTC P1885 – 3–1 Shift Malfunction
StepActionValue(s)YesNo
1Perform an On–Board Diagnostic (EOBD) System
Check.
Is the check completed?–Go to Step 2Go to ”On–
Board Diagnos-
tic System
Check”
21. Install the scan tool.
2. Turn the ignition ON, with the engine OFF.
Then, start engine and allow it to warm up at
idle.
3. Observe ”idle rpm, TPS” on the scan tool.
Was a problem found?–Go to ”Engine
Diagnostic In-
formation”Go to Step 3
3Inspect ”ECM”. Refer to Section 1F, System Diagno-
sis, EOBD System Check.
Was a problem found?–Go to ”Engine
Diagnostic In-
formation”Go to Step 4
41. Turn the ignition OFF.
2. Disconnect the TCM wiring connector.
3. Measure the voltage between terminal B3 and
B13 of the transaxle wiring connector.
4. Turn the ignition ON.
5. Measure the voltage between terminal C15 and
B13 of the transaxle wiring connector.
6. Measure the voltage between terminal C16 and
B13 of the transaxle wiring connector.
Is the voltage within the values shown?11–14VGo to Step 5Go to ”System
Voltage Low or
High”
5Replace the TCM.
Is the action complete?–Go to Step 6–
61. After the repair, use a scan tool ”clear info”
function and road test the vehicle.
2. Review the ”DTC info”.
Has the last test failed or is the current DTC dis-
played?–Replace the
transaxle as-
semblyRepair verified
exit DTC chart