ZF 4 HP 16 AUTOMATIC TRANSAXLE 5A1 – 59
DAEWOO V–121 BL4
SymptomPossible CauseAction
MalfunctionDefective Clutch in Transaxle It There Is
Still No Drive With the TCM Discon-
nectedS This is usually due to too little oil being added
or to internal leakage.
S Repair is not possible ; if necessary, exchange
transaxle.
Kick Down Switch Not Functioning
ProperlyS For checking and remedial action, refer to
”Emergency/Substitute Program” in this sec-
tion.
Kick Down Switch Not Operating Prop-
erlyS For checking and remedial action, refer to En-
gine Instruction.
Vehicle Is in Emergency ModeS For checking and remedial action, refer to
”Emergency/Substitute Program” in this sec-
tion.
5A1 – 90IZF 4 HP 16 AUTOMATIC TRANSAXLE
DAEWOO V–121 BL4
DTC P0710 – Transmission Fluid Temperature Sensor Circuit
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. Record then clear DTC(s) and turn the ignition
OFF, then turn the ignition ON.
4. Select TFT on the scan tool.
5. Drive the vehicle and observe the scan tool for
either of the flowing conditions:
6. The TFT does not change more than 1.5°C
(34.7°F) in 80 seconds since start–up.
7. The TFT changes more than 20°C (68°F) with-
in 7 seconds (unrealistic change).
Did either of the fail conditions occur?–Go to Step 3Go to ”Diag-
nostic Aids”
31. Turn the ignition OFF.
2. Disconnect the transaxle wiring connector.
3. Measure the resistance between terminals 9
and 4 of the transaxle wiring connector.
Is the resistance within the values shown?TFT 25°C
990 ΩGo to Step 7Go to Step 4
41. Remove the oil pan.
2. Disconnect the wiring connector of the trans-
axle fluid temperature sensor.
3. Inspect the automatic transaxle wiring harness
for an intermittent short or open.
Was a problem found?–Go to Step 5Go to Step 6
5Replace the automatic transaxle wiring harness.
Is the replacement complete?–System OK–
6Replace the TFT sensor.
Is the action complete?–System OK–
71. Disconnect the automatic transaxle wiring con-
nector and disconnect the wiring connector of
the TCM(transaxle control module).
2. Measure the resistance between terminal 4 of
the transaxle wiring connector and terminal B1
of the TCM wiring connector.
3. Measure the resistance between terminal 9 of
the transaxle wiring connector and terminal A4
of the TCM wiring connector.
Is the resistance within the values shown?0ΩGo to Step 9Go to Step 8
81. Inspect the automatic transaxle wiring harness
for an intermittent short to ground or open con-
dition.
2. Inspect the automatic TFT sensor wiring har-
ness for an intermittent short to ground or open
condition.
3. Repair the circuits if necessary.
Is the repair complete?–System OK–
ZF 4 HP 16 AUTOMATIC TRANSAXLE 5A1 – 93
DAEWOO V–121 BL4
DTC P0715 – Input Speed Sensor(ISS) Circuit 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 and record then clear
DTC(s).
3. Turn the ignition OFF, then turn the ignition
ON.
4. Observe the input speed on the scan tool.
Is the speed within the values shown?Input speed :
0–7,000rpmGo to ”Diag-
nostic Aids”Go to Step 3
31. Turn the ignition OFF.
2. Disconnect the transaxle wiring connector.
3. Measure the resistance between terminals 15
and 16 of the transaxle wiring connector.
Is the resistance within the values shown?830 ± 5ΩGo to Step 9Go to Step 4
41. Remove the oil pan.
2. Disconnect the input speed sensor wiring con-
nector.
3. Measure the resistance between terminal 1 of
the input speed sensor wiring connector and
terminal 15 of the transaxle wiring connector.
4. Measure the resistance between terminal 2 of
the input speed sensor wiring connector and
terminal 16 of the transaxle wiring connector.
Is the resistance within the values shown?0ΩGo to Step 6Go to Step 5
5Repair the malfunctioning terminals as necessary.
Is the action complete?–System OK–
61. Turn the ignition ON.
2. Measure the voltage of terminal 1.
3. Measure the voltage of terminal 2.
Is the voltage within the values shown?11–14VGo to Step 7Go to Step 8
7Repair the short to battery power.
Is the action complete?–System OK–
8Replace the input speed sensor.
Is the action complete?–System OK–
91. Disconnect the transaxle wiring connector and
TCM connector.
2. Measure the resistance between terminal 15 of
the transaxle wiring connector and terminal B4
of the TCM wiring connector.
3. Measure the resistance between terminal 16 of
the transaxle wiring connector and terminal B2
of the TCM wiring connector.
Is the resistance within the values shown?0ΩGo to Step 11Go to Step 10
10Repair the malfunctioning terminals as necessary.
Is the action complete?–System OK–
5A1 – 96IZF 4 HP 16 AUTOMATIC TRANSAXLE
DAEWOO V–121 BL4
DTC P0716 – Input Speed Sensor(ISS) Circuit Range/Performance
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 and record then clear
DTC(s).
3. Turn the ignition OFF, then turn the ignition
ON.
4. Observe the input speed on the scan tool.
Is the speed within the values shown?Input speed :
0–7,000rpmGo to ”Diag-
nostic Aids”Go to Step 3
31. Turn the ignition OFF.
2. Disconnect the transaxle wiring connector.
3. Measure the resistance between terminals 15
and 16 of the transaxle wiring connector.
Is the resistance within the values shown?830 ± 5ΩGo to Step 9Go to Step 4
41. Remove the oil pan.
2. Disconnect the input speed sensor wiring con-
nector.
3. Measure the resistance between terminal 1 of
the input speed sensor wiring connector and
terminal 15 of the transaxle wiring connector.
4. Measure the resistance between terminal 2 of
the input speed sensor wiring connector and
terminal 16 of the transaxle wiring connector.
Is the resistance within the values shown?0ΩGo to Step 6Go to Step 5
5Repair the malfunctioning terminals as necessary.
Is the action complete?–System OK–
61. Turn the ignition ON.
2. Measure the voltage of terminal 1.
3. Measure the voltage of terminal 2.
Is the voltage within the values shown?11–14VGo to Step 7Go to Step 8
7Repair the short to battery power.
Is the action complete?–System OK–
8Replace the input speed sensor.
Is the action complete?–System OK–
91. Disconnect the transaxle wiring connector and
TCM connector.
2. Measure the resistance between terminal 15 of
the transaxle wiring connector and terminal B4
of the TCM wiring connector.
3. Measure the resistance between terminal 16 of
the transaxle wiring connector and terminal B2
of the TCM wiring connector.
Is the resistance within the values shown?0ΩGo to Step 11Go to Step 10
10Repair the malfunctioning terminals as necessary.
Is the action complete?–System OK–
ZF 4 HP 16 AUTOMATIC TRANSAXLE 5A1 – 99
DAEWOO V–121 BL4
DTC P0717 – Input Speed Sensor(ISS) Circuit No Signal
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 and record then clear
DTC(s).
3. Turn the ignition OFF, then turn the ignition
ON.
4. Observe the input speed on the scan tool.
Is the speed within the values shown?100rpmGo to ”Diag-
nostic Aids”Go to Step 3
31. Turn the ignition OFF.
2. Disconnect the transaxle wiring connector.
3. Measure the resistance between terminals 15
and 16 of the transaxle wiring connector.
Is the resistance within the values shown?830 ± 5ΩGo to Step 9Go to Step 4
41. Remove the oil pan.
2. Disconnect the input speed sensor wiring con-
nector.
3. Measure the resistance between terminal 1 of
the input speed sensor wiring connector and
terminal 15 of the transaxle wiring connector.
4. Measure the resistance between terminal 2 of
the input speed sensor wiring connector and
terminal 16 of the transaxle wiring connector.
Is the resistance within the values shown?0ΩGo to Step 6Go to Step 5
5Repair the malfunctioning terminals as necessary.
Is the action complete?–System OK–
61. Turn the ignition ON.
2. Measure the voltage of terminal 1.
3. Measure the voltage of terminal 2.
Is the voltage within the values shown?11–14VGo to Step 7Go to Step 8
7Repair the short to battery power.
Is the action complete?–System OK–
8Replace the input speed sensor.
Is the action complete?–System OK–
91. Disconnect the transaxle wiring connector and
TCM connector.
2. Measure the resistance between terminal 15 of
the transaxle wiring connector and terminal B4
of the TCM wiring connector.
3. Measure the resistance between terminal 16 of
the transaxle wiring connector and terminal B2
of the TCM wiring connector.
Is the resistance within the values shown?0ΩGo to Step 11Go to Step 10
10Repair the malfunctioning terminals as necessary.
Is the action complete?–System OK–
5A1 – 102IZF 4 HP 16 AUTOMATIC TRANSAXLE
DAEWOO V–121 BL4
DTC P0720 – Output Speed Sensor(OSS) Circuit 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 and record then clear
DTC(s), then turn the ignition OFF.
3. Raise and support the drive wheels, then start
the engine.
4. Gear position is D and observe the output
speed on the scan tool.
Is the speed within the values shown?190~9,762rpmGo to ”Diag-
nostic Aids”Go to Step 3
31. Turn the ignition OFF.
2. Disconnect the transaxle wiring connector.
3. Measure the resistance between terminals 1
and 2 of the transaxle wiring connector.
Is the resistance within the values shown?Go to Step 9Go to Step 4
41. Remove the oil pan.
2. Disconnect the output speed sensor wiring
connector.
3. Measure the resistance between terminal 1 of
the output speed sensor wiring connector and
terminal 1 of the transaxle wiring connector.
4. Measure the resistance between terminal 2 of
the output speed sensor wiring connector and
terminal 2 of the transaxle wiring connector.
Is the resistance within the values shown?0ΩGo to Step 6Go to Step 5
5Repair the malfunctioning terminals as necessary.
Is the action complete?–System OK–
61. Turn the ignition ON.
2. Measure the voltage of terminal 1.
3. Measure the voltage of terminal 2.
Is the voltage within the values shown?11–14VGo to Step 7Go to Step 8
7Repair the malfunctioning terminals as necessary.
Is the action complete?–System OK–
8Replace the output speed sensor.
Is the action complete?–System OK–
91. Disconnect the transaxle wiring connector and
TCM connector.
2. Measure the resistance between terminal 1 of
the transaxle wiring connector and terminal
B10 of the TCM wiring connector.
3. Measure the resistance between terminal 2 of
the transaxle wiring connector and terminal B5
of the TCM wiring connector.
Is the resistance within the values shown?0ΩGo to Step 11Go to Step 10
10Repair the malfunctioning terminals as necessary.
Is the action complete?–System OK–
ZF 4 HP 16 AUTOMATIC TRANSAXLE 5A1 – 105
DAEWOO V–121 BL4
DTC P0721 – Output Speed Sensor(OSS) Circuit
Range/Performance
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 and record then clear
DTC(s), then turn the ignition OFF.
3. Raise and support the drive wheels, then start
the engine.
4. Gear position is D and observe the output
speed on the scan tool.
Is the speed within the values shown?190~9,762rpmGo to ”Diag-
nostic Aids”Go to Step 3
31. Turn the ignition LOCK.
2. Disconnect the transaxle wiring connector.
3. Measure the resistance between terminals 1
and 2 of the transaxle wiring connector.
Is the resistance within the values shown?Go to Step 9Go to Step 4
41. Remove the oil pan.
2. Disconnect the output speed sensor wiring
connector.
3. Measure the resistance between terminal 1 of
the output speed sensor wiring connector and
terminal 1 of the transaxle wiring connector.
4. Measure the resistance between terminal 2 of
the output speed sensor wiring connector and
terminal 2 of the transaxle wiring connector.
Is the resistance within the values shown?0ΩGo to Step 6Go to Step 5
5Repair the malfunctioning terminals as necessary.
Is the action complete?–System OK–
61. Turn the ignition ON.
2. Measure the voltage of terminal 1.
3. Measure the voltage of terminal 2.
Is the voltage within the values shown?11–14VGo to Step 7Go to Step 8
7Repair the malfunctioning terminals as necessary.
Is the action complete?–System OK–
8Replace the input speed sensor.
Is the action complete?–System OK–
91. Disconnect the transaxle wiring connector and
TCM connector.
2. Measure the resistance between terminal 1 of
the transaxle wiring connector and terminal
B10 of the TCM wiring connector.
3. Measure the resistance between terminal 2 of
the transaxle wiring connector and terminal B5
of the TCM wiring connector.
Is the resistance within the values shown?0ΩGo to Step 11Go to Step 10
10Repair the malfunctioning terminals as necessary.
Is the action complete?–System OK–
ZF 4 HP 16 AUTOMATIC TRANSAXLE 5A1 – 107
DAEWOO V–121 BL4
DIAGNOSTIC TROUBLE CODE(DTC) P0722
OUTPUT SPEED SENSOR(OSS) CIRCUIT NO SIGNAL
Circuit Description
The vehicle A/T OSS is a magnetic inductive pickup that
relays information relative to vehicle speed to the TCM.
Vehicle speed information is used by the TCM to control
shift timing, line pressure, and TCC apply and release.
The output speed sensor mounts in the case at the speed
sensor rotor, which is pressed onto the spur gear. An air
gap of 0.1mm~1.3mm(0.004~0.05in) is maintained be-
tween the sensor and the teeth on the spur gear teeth. The
sensor consists of a permanent magnet surrounded by a
coil of wire. As the differential rotates, an AC signal in-
duces a higher frequency and voltage measurement at the
sensor. Sensor resistance should measure at 20°C
(68°F). Sensor can measure from 20HZ~8,000HZ.
Conditions for Setting The DTC
S If the gear shift is not in progress and the selector
lever position is ”1”, ”2”, ”3”, ”D”, or ”Z3” and the
transaxle output speed is less than the limit value of
transaxle output speed for plausibility check of
transaxle output speed and the turbine speed is
greater than the limit value of turbine speed for
plausibility check of transaxle output speed then the
error bit will be set.S System voltage is greater than 7 volts.
S Engine is running.
S No input speed error DTCs P0715, P0716, and
P0717.
S No transmission range sensor error DTC P0705.
S TCM or ECM is defective.
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 Vehicle running remains actual 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 cycles.
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 P0722 sets, the possible cause of fault
could be OSS(Output speed sensor).