lock DAEWOO LACETTI 2004 Service Repair Manual

5A2 – 72IAISIN AUTOMATIC TRANSAXLE
DAEWOO V–121 BL4
DIAGNOSTIC TROUBLE CODE (DTC) P0748
PRESSURE CONTROL SOLENOID (PCS) ELECTRICAL
Conditions for Setting the DTC
S TCM detects that the feed back voltage is greater
than 4.9 volts and detects the detection 500 milli-
seconds continuously.(When the PCS circuit is
short to battery).
S TCM detects that the feed back voltage is less than
70.mV for 70 milliseconds and detects the 12.5
seconds continuously.(When the PCS circuit is
short to ground or open).
Action Taken When the DTC Sets
S TCM will request the illumination of MIL and store
DTC when TCM detects a failure on the first ignition
cycle.
S No lockup control
S No engine torque reduction control
S No engagement pressure control
S No 4th gearS No self–learning control
S After failure decision : emergency mode
Conditions for Clearing the DTC
S The TCM turns off the MIL when no further failures
detected for three consecutive ignition cycles.
S The scan tool can clear the DTC from the TCM his-
tory.
S The TCM clears the DTC from the TCM history
memory after forty consecutive warm up cycles
without fault.
S TCM detects the feed back voltage is between
70mV and 4.9 v for 12.5 seconds continuously.
Cause of Failure
S Wiring harness or connector between Pressure
Control Solenoid (PCS) and TCM
S PCS
S TCM

AISIN AUTOMATIC TRANSAXLE 5A2 – 77
DAEWOO V–121 BL4
DIAGNOSTIC TROUBLE CODE (DTC) P0753
SHIFT SOLENOID 1 (SS1) ELECTRICAL
Conditions for Setting the DTC
S TCM detects that the ON signal of the Shift Sole-
noid 1 (SS1) monitor during 0.5 seconds when SS1
driver outputs the OFF signal.(When the SS1 circuit
is open or short to battery).
S TCM detects that the OFF signal of the Shift Sole-
noid 1 (SS1) monitor during 0.3 seconds when SS1
driver outputs the ON signal.(When the SS1 circuit
is short to ground).
S The above detection 2 times at shifting continuous-
ly.
Action Taken When the DTC Sets
S TCM will request the illumination of MIL and store
DTC when TCM detects a failure on the first ignition
cycle.
S No lockup control
S No engine torque reduction control
S No engagement pressure control
S No timing solenoid control for N–D
S No self–learning control
S After failure decision : emergency modeTCM Shifting Pattern (Range : D)
Normal
SS1 FAIL
GearSS1SS2GearSS1SS2
1 stONON3 rdFAILOFF
2 ndONOFF3 rdFAILOFF
3 rdOFFOFF3 rdFAILOFF
4 thOFFON4 thFAILON
Conditions for Clearing the DTC
S The TCM turns off the MIL when no further failures
detected for three consecutive ignition cycles.
S The scan tool can clear the DTC from the TCM his-
tory.
S The TCM clears the DTC from the TCM history
memory after forty consecutive warm up cycles
without fault.
S TCM detects the ON signal of the SS1 monitor dur-
ing 160 ms when SS1 driver outputs the ON signal
and TCM detects the OFF signal of the SS1 moni-
tor during 160 ms when SS1 driver outputs the
OFF signal.

5A2 – 82IAISIN AUTOMATIC TRANSAXLE
DAEWOO V–121 BL4
DIAGNOSTIC TROUBLE CODE (DTC) P0758
SHIFT SOLENOID 2 (SS2) ELECTRICAL
Conditions for Setting the DTC
S TCM detects that the ON signal of the Shift Sole-
noid 2 (SS2) monitor during 0.5 seconds when SS2
driver outputs the OFF signal.(When the SS2 circuit
is open or short to battery).
S TCM detects that the OFF signal of the Shift Sole-
noid 2 (SS2) monitor during 0.3 seconds when SS2
driver outputs the ON signal.(When the SS2 circuit
is short to ground).
S The above detection 2 times at shifting continuous-
ly.
Action Taken When the DTC Sets
S TCM will request the illumination of MIL and store
DTC when TCM detects a failure on the first ignition
cycle.
S No lockup control
S No engine torque reduction control
S No engagement pressure control
S No timing solenoid control for N–D
S No self–learning control
S After failure decision : emergency modeTCM Shifting Pattern (Range : D)
Normal
SS2 FAIL
GearSS1SS2GearSS1SS2
1 stONON2 ndONFAIL
2 ndONOFF2 ndONFAIL
3 rdOFFOFF3 rdOFFFAIL
4 thOFFON3 rdOFFFAIL
Conditions for Clearing the DTC
S The TCM turns off the MIL when no further failures
detected for three consecutive ignition cycles.
S The scan tool can clear the DTC from the TCM his-
tory.
S The TCM clears the DTC from the TCM history
memory after forty consecutive warm up cycles
without fault.
S TCM detects the ON signal of the SS2 monitor dur-
ing 160 ms when SS2 driver outputs the ON signal
and TCM detects the OFF signal of the SS2 moni-
tor during 160 ms when SS2 driver outputs the
OFF signal.

AISIN AUTOMATIC TRANSAXLE 5A2 – 91
DAEWOO V–121 BL4
DIAGNOSTIC TROUBLE CODE (DTC) P1791
THROTTLE POSITION SIGNAL ERROR
Conditions for Setting the DTC
S TCM detects that malfunction of throttle position
signal for 2 seconds continuously.
S No DTC U2105
Action Taken When the DTC Sets
S TCM will request the illumination of MIL and store
DTC when TCM detects a failure on the first ignition
cycle.
S TCM judges the throttle opening is 0% for shift
point control.
S TCM judges the throttle opening is 100% for line
pressure control.
S No lock–up
S No 4th gear
S No self–learning controlS No timing solenoid control for N–D
Conditions for Clearing the DTC
S The TCM turns off the MIL when no further failures
detected for three consecutive ignition cycles.
S The scan tool can clear the DTC from the TCM his-
tory.
S The TCM clears the DTC from the TCM history
memory after forty consecutive warm up cycles
without fault.
Cause of Failure
S Wiring harness or connector between ECM and
TCM
S ECM
S TCM

AISIN AUTOMATIC TRANSAXLE 5A2 – 95
DAEWOO V–121 BL4
DIAGNOSTIC TROUBLE CODE (DTC) U2105
CAN ERROR
Conditions for Setting the DTC
S TCM detects that the BUS OFF signal. This detec-
tion is continued for 0.2 seconds.
S TCM detects that nothing of ECM signal on CAN
BUS for 0.2 seconds. This detection is continued
for 2.0 seconds.
Action Taken When the DTC Sets
S TCM will request the illumination of MIL and store
DTC when TCM detects a failure on the first ignition
cycle.
S TCM judges the throttle opening is 0% for shift
point and lock–up point control.
S TCM judges the throttle opening is 100% for line
pressure control.
S No lock–upS No self–learning control
S No 4th gear
S TCM judges the engine revolution is 0 rpm.
Conditions for Clearing the DTC
S The TCM turns off the MIL when no further failures
detected for three consecutive ignition cycles.
S The scan tool can clear the DTC from the TCM his-
tory.
S TCM detects the BUS normal signal for 2 seconds
continuously.
Cause of Failure
S Wiring harness or connector between ECM and
TCM
S ECM
S TCM

AISIN AUTOMATIC TRANSAXLE 5A2 – 99
DAEWOO V–121 BL4
FLUID COOLER FLUSHING
Flushing Procedure
1. Drain the fluid from the transaxle and refill the
transaxle with new transaxle fluid. Refer to ”Fluid
Drain Procedure” in this section.
2. Let the engine idle for 5 minutes.
3. Drain the fluid from the transaxle and refill the
transaxle with new transaxle fluid. Refer to ”Fluid
Drain Procedure” in this section.
CONTROL CABLE ADJUSTMENT
Adjustment Procedure
The various shift control cable positions must match at the
shift control lever in the vehicle and at the selector lever
on the transaxle to provide proper transaxle shifting.
Place the shift control lever in the PARK position and
check the selector lever connection to verify that it is in the
forward most position. If it is not, the following adjustment
must be performed:
1. Disconnect the negative battery cable.
2. Remove the floor console. Refer to Section 9G,
Interior Trim.
3. Place the shift control lever in the PARK position.
4. Loosen the control cable adjusting nut.
5. Move the Transmission Range (TR) switch lever
counterclockwise until stopping the lever.

5A2 – 102IAISIN AUTOMATIC TRANSAXLE
DAEWOO V–121 BL4
3. Remove the E–ring.
4. Disconnect the shift control cable from the TR
switch lever.
5. Remove the retaining nut and then remove the
washer and the control lever.
6. Using a driver, unstake the lock washer and re-
move the nut.
Installation Procedure
1. Install the Transmission Range (TR) switch onto the
manual valve lever shaft and temporarily install the
2 adjusting bolts.
2. Install the new lock washer and nuts.
Tighten
Tighten the nuts to 12 NSm (106 Ib–in).
3. Temporarily install the control lever.
4. Turn the lever counterclockwise until it stops, then
turn it clockwise 2 notches.
5. Remove the control lever.

AISIN AUTOMATIC TRANSAXLE 5A2 – 103
DAEWOO V–121 BL4
6. Aligh the groove with the neutral basic line, then
install the 2 bolts.
Tighten
Tighten the 2 bolts to 5.4 NSm (48 Ib–in).
7. Using a screw driver, stake the nut with the lock
washer.
8. Install the control lever, washer and nut.
Tighten
Tighten the nut to 12 NSm (106 Ib–in).
9. Connect the control cable to TR switch.
10. Connect the TR switch electrical connector.
11. Adjust the control cable. Refer to ”Control Cable
Adjustment” in this section.
12. Install the control cable adjusting nut.
Tighten
Tighten the control cable adjusting nut to 8 NSm (71
Ib–in).
13. Connect the negative battery cable.

5A2 – 112IAISIN AUTOMATIC TRANSAXLE
DAEWOO V–121 BL4
7. Disconnect the input shaft speed (ISS) sensor elec-
trical connector.
8. Disconnect the output shaft speed (OSS) sensor
electrical connector.
9. Disconnect the Transmission Range (TR) Switch
electrical connector.
10. Disconnect the transaxle electrical connector.
11. Remove the service hall cover.
12. Remove the three torque converter bolts.
13. Remove the damping block connection nut and
bolt.
14. Remove the rear mounting bracket bolts and rear
mounting bracket.
15. Remove the three upper transaxle mounting brack-
et bolts.

AISIN AUTOMATIC TRANSAXLE 5A2 – 115
DAEWOO V–121 BL4
5. Install the rear mounting bracket bolts and the
bracket.
Tighten
Tighten the rear mounting bracket bolts to 60 NSm (44
Ib–ft).
6. Install the damping block connection nut and bolt.
Tighten
Tighten the damping block connection nut and bolt to
80 NSm (59 Ib–ft).
7. Install the torque converter bolts.
Tighten
Tighten the torque converter bolts to 45 NSm (33 Ib–
ft).
8. Install the service hall cover.
9. Connect the transaxle electrical connector.
10. Connect the TR switch electrical connector.
11. Connect the OSS sensor electrical connector.
12. Connect the ISS sensor electrical connector.
13. Remove engine support fixture DW110–060.
14. Connect the shift control cable into the transaxle.
Refer to ”Shift Control Cable” in this section.