sensor DAEWOO LACETTI 2004 Service Repair Manual

5–174WELECTRICAL WIRING DIAGRAMS
27. ABS (ANTILOCK BRAKE SYSTEM)
1) POWER SUPPLY, WHEEL SPEED SENSOR & BRAKE SWITCH CIRCUIT
a. CONNECTOR INFORMATION
CONNECTOR(NO.)
(PIN NO. COLOR)
CONNECTING, WIRING HARNESSCONNECTOR POSITION
C102 (11 Pin, White)Body
Engine Fuse BlockEngine Fuse Block
C107 (2 Pin, White)ABS
Engine Fuse BlockEngine Fuse Block
C110 (12 Pin, White)ABS
BodyBelow Engine Fuse Block
C 111 ( 2 P i n , B l a c k )ABS
FrontBelow Engine Fuse Block
C201 (76 Pin, Black)I.P
I.P Fuse BlockI.P Fuse Block
C202 (89 Pin, White)I.P
BodyLeft CO–Driver Leg Room
C302 (4 Pin, Black)RR. ABS
BodyCenter Rear Cross member
S301 (Blue)BodyLeft CO–Driver Leg Room
G106ABSBelow EBCM
b. CONNECTOR IDENTIFICATION SYMBOL & PIN NUMBER POSITION
J3B1P067

5–180WELECTRICAL WIRING DIAGRAMS
29. SUN ROOF CIRCUITa. CONNECTOR INFORMATION
CONNECTOR(NO.)
(PIN NO. COLOR)
CONNECTING, WIRING HARNESSCONNECTOR POSITION
C201 (76 Pin, Black)I.P
I.P Fuse BlockI.P Fuse Block
C202 (89 Pin, White)I.P
BodyLeft CO–Driver Leg Room
C204 (8 Pin, White)Roof
Body (W/O Rain Sensor)Left CO–Driver Leg Room
C204 (8 Pin, White)Roof
Body (W/O Rain Sensor)Left CO–Driver Leg Room
G205RoofInside CO–Driver A Pillar
b. CONNECTOR IDENTIFICATION SYMBOL & PIN NUMBER POSITION
J3B1P069

SECTION : 5A1
ZF 4 HP 16 AUTOMATIC TRANSAXLE
CAUTION : Disconnect the negative battery cable before removing or installing any electrical unit or when a tool
or equipment could easily come in contact with exposed electrical terminals. Disconnecting this cable will help
prevent personal injury and damage to the vehicle. The ignition must also be in LOCK unless otherwise noted.
TABLE OF CONTENTS
INTRODUCTION5A1–3 . . . . . . . . . . . . . . . . . . . . . . . . . . .
ZF 4HP 16 Automatic Transaxle 5A1–3. . . . . . . . . . . .
Transaxle Components 5A1–4. . . . . . . . . . . . . . . . . . . .
SPECIFICATIONS5A1–5 . . . . . . . . . . . . . . . . . . . . . . . . .
General Specifications 5A1–5. . . . . . . . . . . . . . . . . . . .
Transaxle Gear Ratio 5A1–5. . . . . . . . . . . . . . . . . . . . . .
Fluid Capacity 5A1–5. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fastener Tightening Specifications 5A1–5. . . . . . . . . .
Shift Speed Chart 5A1–7. . . . . . . . . . . . . . . . . . . . . . . . .
Line Pressure 5A1–8. . . . . . . . . . . . . . . . . . . . . . . . . . . .
SPECIAL TOOLS5A1–9 . . . . . . . . . . . . . . . . . . . . . . . . . .
Special Tools Table 5A1–9. . . . . . . . . . . . . . . . . . . . . . .
SCHEMATIC AND ROUTING DIAGRAMS5A1–11 . . .
Transaxle Control Module (1 of 2) 5A1–11. . . . . . . . . .
Transaxle Control Module (2 of 2) 5A1–12. . . . . . . . . .
Shift Mode Diagram 5A1–13. . . . . . . . . . . . . . . . . . . . . .
Power Flow Diagram 5A1–17. . . . . . . . . . . . . . . . . . . . .
COMPONENT LOCATOR5A1–33 . . . . . . . . . . . . . . . . . .
Transaxle Identification Information 5A1–33. . . . . . . .
Torque Converter 5A1–34. . . . . . . . . . . . . . . . . . . . . . . .
Transaxle Housing 5A1–35. . . . . . . . . . . . . . . . . . . . . . .
Oil Pump 5A1–36. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rear Cover & Oil Pan Cover 5A1–37. . . . . . . . . . . . . .
Parking Lever 5A1–38. . . . . . . . . . . . . . . . . . . . . . . . . . .
Input Shaft & Shift Gear 5A1–39. . . . . . . . . . . . . . . . . .
Valve Body 5A1–41. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Gear Shift Control 5A1–42. . . . . . . . . . . . . . . . . . . . . . .
DIAGNOSTIC INFORMATION AND PROCEDURES
DIAGNOSIS5A1–43 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Basic Knowledge Required 5A1–43. . . . . . . . . . . . . . . .
Functional Check Procedure 5A1–43. . . . . . . . . . . . . .
Line Pressure Check Procedure 5A1–43. . . . . . . . . . .
Clutch Plate Diagnosis 5A1–45. . . . . . . . . . . . . . . . . . .
Cooler Flushing and Flow Test 5A1–45. . . . . . . . . . . . . Transaxle Fluid Level Service Procedure 5A1–45. . . .
Electrical/Garage Shift Test 5A1–47. . . . . . . . . . . . . . .
Road Test Procedure 5A1–47. . . . . . . . . . . . . . . . . . . . .
Torque Converter Lock–Up Clutch(TCC)
Diagnosis 5A1–48. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TCM Initialization Procedure 5A1–50. . . . . . . . . . . . . .
Shift Speed Chart 5A1–51. . . . . . . . . . . . . . . . . . . . . . . .
Internal Wiring Harness Check 5A1–51. . . . . . . . . . . .
Transaxle Wiring Harness Connector 5A1–54. . . . . . .
Symptom Diagnosis 5A1–56. . . . . . . . . . . . . . . . . . . . . .
DIAGNOSTIC TROUBLE CODE DIAGNOSIS5A1–60
Diagnostic Trouble Code (DTC) Identification 5A1–60
DTC P0562 – System Voltage Low 5A1–68. . . . . . . . .
DTC P0563 – System Voltage High 5A1–71. . . . . . . .
DTC P0601 – Internal Control Module Memory
Checksum Error 5A1–74. . . . . . . . . . . . . . . . . . . . . . .
DTC P0603 – Internal Control Module Keep
Alive Memory(KAM) Error 5A1–76. . . . . . . . . . . . . . .
DTC P0604 – Internal Control Module Random
Access Memory(RAM) Error 5A1–78. . . . . . . . . . . . .
DTC P0606 – Transaxle Control Module
Processor Fault 5A1–80. . . . . . . . . . . . . . . . . . . . . . . .
DTC P0703 – Brake Switch Circuit
Malfunction 5A1–83. . . . . . . . . . . . . . . . . . . . . . . . . . .
DTC P0705 – Transmission Range Sensor
Circuit Malfunction(PRNDL Input) 5A1–86. . . . . . . .
DTC P0710 – Transmission Fluid Temperature
Sensor Circuit Malfunction 5A1–89. . . . . . . . . . . . . .
DTC P0715 – Input Speed Sensor(ISS) Circuit
Malfunction 5A1–92. . . . . . . . . . . . . . . . . . . . . . . . . . .
DTC P0716 – Input Speed Sensor(ISS) Circuit
Range/Performance 5A1–95. . . . . . . . . . . . . . . . . . . .
DTC P0717 – Input Speed Sensor(ISS) Circuit
No Signal 5A1–98. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DTC P0720 – Output Speed Sensor(OSS)
Circuit Malfunction 5A1–101. . . . . . . . . . . . . . . . . . . .
DTC P0721 – Output Speed Sensor(OSS)
Circuit Range/Performance 5A1–104. . . . . . . . . . . . .

5A1 – 2IZF 4 HP 16 AUTOMATIC TRANSAXLE
DAEWOO V–121 BL4
DTC P0722 – Output Speed Sensor(OSS)
Circuit No Signal 5A1–107. . . . . . . . . . . . . . . . . . . . . .
DTC P0725 – Engine Speed Input Circuit
Malfunction 5A1–110. . . . . . . . . . . . . . . . . . . . . . . . . .
DTC P0726 – Engine Speed Input Circuit
Range/Performance 5A1–112. . . . . . . . . . . . . . . . . . .
DTC P0727 – Engine Speed Input Circuit No
Signal 5A1–114. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DTC P0731 – Gear 1 Incorrect Ratio 5A1–116. . . . . .
DTC P0732 – Gear 2 Incorrect Ratio 5A1–118. . . . . .
DTC P0733 – Gear 3 Incorrect Ratio 5A1–120. . . . . .
DTC P0734 – Gear 4 Incorrect Ratio 5A1–122. . . . . .
DTC P0781 – 1–2 Shift Malfunction 5A1–124. . . . . . .
DTC P0782 – 2–3 Shift Malfunction 5A1–126. . . . . . .
DTC P0783 – 3–4 Shift Malfunction 5A1–128. . . . . . .
DTC P1604 – Data Check of Internal &
Extended Ram Failed 5A1–130. . . . . . . . . . . . . . . . . .
DTC P1606 – Failure Of External Watchdog 5A1–132
DTC P1671 – CAN Transmit Message
Failure 5A1–134. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DTC P1672 – CAN Bus Off Failure 5A1–136. . . . . . . .
DTC P1673 – CAN Receive ECM Message
Failure 5A1–138. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DTC P1839 – EDS 3 Output Shorted To
Ground 5A1–140. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DTC P1840 – EDS 3 Output Shorted To
Power 5A1–142. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DTC P1841 – EDS 3 Output Open 5A1–144. . . . . . . .
DTC P1850 – Solenoid 1 Output Shorted To
Ground 5A1–146. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DTC P1851 – Solenoid 1 Output Shorted To
Power 5A1–148. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DTC P1852 – Solenoid 1 Output Open 5A1–150. . . .
DTC P1853 – Solenoid 2 Output Shorted To
Ground 5A1–152. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DTC P1854 – Solenoid 2 Output Shorted To
Power 5A1–154. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DTC P1855 – Solenoid 2 Output Open 5A1–156. . . .
DTC P1861 – EDS 4 Output Shorted To
Ground 5A1–158. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DTC P1862 – EDS 4 Output Shorted To
Power 5A1–160. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DTC P1863 – EDS 4 Output Open 5A1–162. . . . . . . .
DTC P1864 – EDS 5 Output Shorted To
Ground 5A1–164. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DTC P1865 – EDS 5 Output Shorted To
Power 5A1–166. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DTC P1866 – EDS 5 Output Open 5A1–168. . . . . . . .
DTC P1867 – EDS 6 Output Shorted To
Ground 5A1–170. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . DTC P1868 – EDS 6 Output Shorted To
Power 5A1–172. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DTC P1869 – EDS 6 Output Open 5A1–174. . . . . . . .
DTC P1871 – EDS Valve Power Supply
Circuit Shorted to Power 5A1–176. . . . . . . . . . . . . . .
DTC P1874 – Solenoid Valve Power Supply
Circuit Shorted to Power 5A1–178. . . . . . . . . . . . . . .
DTC P1881 – 2–1 Shift Malfunction 5A1–180. . . . . . .
DTC P1883 – 3–2 Shift Malfunction 5A1–182. . . . . . .
DTC P1884 – 4–3 Shift Malfunction 5A1–184. . . . . . .
DTC P1885 – 3–1 Shift Malfunction 5A1–186. . . . . . .
DTC P1886 – 4–2 Shift Malfunction 5A1–188. . . . . . .
MAINTENANCE AND REPAIR5A1–190 . . . . . . . . . . . .
ON–VEHICLE SERVICE 5A1–190. . . . . . . . . . . . . . . . . .
Transaxle Fluid Level Checking Procedure 5A1–190.
Changing the Fluid 5A1–191. . . . . . . . . . . . . . . . . . . . . .
Fluid Level Set After Service 5A1–192. . . . . . . . . . . . .
Repairing Fluid Leaks 5A1–192. . . . . . . . . . . . . . . . . . .
Case Porosity Repair 5A1–193. . . . . . . . . . . . . . . . . . . .
Shift Control Lever Assembly 5A1–193. . . . . . . . . . . . .
Shift Control Cable 5A1–195. . . . . . . . . . . . . . . . . . . . . .
Shift Control Cable Adjustment 5A1–196. . . . . . . . . . .
Transaxle Control Module(TCM) 5A1–197. . . . . . . . . .
Park/Neutral Start Switch 5A1–198. . . . . . . . . . . . . . . .
Oil Cooler Pipes/Hoses 5A1–199. . . . . . . . . . . . . . . . . .
Drive Axle Oil Seal 5A1–201. . . . . . . . . . . . . . . . . . . . . .
Oil Pan, Oil Pan Gasket 5A1–201. . . . . . . . . . . . . . . . .
Control Valve Body Assembly 5A1–203. . . . . . . . . . . .
Left Transaxle Mounting Bracket 5A1–205. . . . . . . . . .
Transaxle Assembly 5A1–206. . . . . . . . . . . . . . . . . . . . .
UNIT REPAIR 5A1–212. . . . . . . . . . . . . . . . . . . . . . . . . . .
Torque Converter 5A1–212. . . . . . . . . . . . . . . . . . . . . . .
Transaxle Holding Fixture Assembly 5A1–212. . . . . . .
Valve Body 5A1–212. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rear Cover 5A1–213. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Clutch B/E 5A1–214. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Clutch B/E Measurement Procedure 5A1–217. . . . . .
Planetary Gear Set 5A1–220. . . . . . . . . . . . . . . . . . . . .
Brake C/D 5A1–221. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Differential 5A1–224. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Side Shaft 5A1–224. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Brake F, Slotted Nut 5A1–225. . . . . . . . . . . . . . . . . . . . .
Torque Converter Housing 5A1–227. . . . . . . . . . . . . . .
Shift Mechanism 5A1–228. . . . . . . . . . . . . . . . . . . . . . . .
Parking Lock System 5A1–229. . . . . . . . . . . . . . . . . . . .
Bearing Plate(With Spur Gear) Assembly 5A1–229. .
Oil Pump Assembly 5A1–229. . . . . . . . . . . . . . . . . . . . .
Differential/Side Shaft Outer Race, Bearing
Shim 5A1–230. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

ZF 4 HP 16 AUTOMATIC TRANSAXLE 5A1 – 5
DAEWOO V–121 BL4
SPECIFICATIONS
GENERAL SPECIFICATIONS
Definition
Transaxle Type4–speed with four–wheel drive and transverse engine
Input Torque240 NSm (177 lb–ft)
Transaxle Weight76kg (168 lb)
Torque Converter Capacity9.72kg (21.4 lb)
Transaxle Fluid Type (manufacture company)ESSO LT 71141 or TOTAL ATF H50235
Transaxle Fluid Capacity7.3qt (6.9L)
TRANSAXLE GEAR RATIO
GearRatio
First2.719
Second1.487
Third1.000
Fourth0.717
Reverse 2.529
Final3.945:1
FLUID CAPACITY
LitresQuarts
Bottom Pan Removal44.2
Complete Overhaul6.97.3
Torque Converter Removal22.1
(Measurements are approximate)
FASTENER TIGHTENING SPECIFICATIONS
ApplicationNSmLb–FtLb–In
Bearing Plate Bolts23.517.5–
Slotted Nut220162–
Rear Cover Attachment Bolts23.517.5–
Baffle Plate Attachment Bolts10–89
Park/Neutral Position Switch10–89
Fluid Pump Connecting Bolts10–89
Fluid Filter Housing Cover Attachment Bolts10–89
Input Speed sensor Attachment Bolts8–71
Output Speed Sensor Attachment Bolts8–71
Valve Body Bolts8–71
Valve Body Upper & Lower Fixing Bolts6–53
Fluid Pan Connecting Bolts6–53
Fluid Pan Drain Plug4533–

ZF 4 HP 16 AUTOMATIC TRANSAXLE 5A1 – 35
DAEWOO V–121 BL4
TRANSAXLE HOUSING
1. Transaxle Housing
2. Bushing
3. Shaft Seal
4. Axle Shaft Seal
5. Sealing Sleeve
6. Breather Pipe
7. Sleeve Protector
8. Type Plate
9. Cable Terminal10. Output Speed Sensor
11. Washer
12. Bolt
13. Shim
14. Shim
15. Park/Neutral Position Switch
16. Bolt
17. Sealing sleeve

ZF 4 HP 16 AUTOMATIC TRANSAXLE 5A1 – 41
DAEWOO V–121 BL4
VALVE BODY
1. Control Valve Body
2. Valve Body Wiring Harness
3. O–ring
4. Plug
5. Cable Terminal
6. Retaining Clip
7. Input Speed Sensor
8. Cap Screw9. Solenoid Valve
10. Cap Screw
11. Fixing Plate
12. Fixing Plate
13. Cap Screw
14. Solenoid Valve
15. Solenoid Valve

5A1 – 48IZF 4 HP 16 AUTOMATIC TRANSAXLE
DAEWOO V–121 BL4
The Lock up clutch should not apply unless the transaxle
has reached a minimum operating temperature of 8°C
(46°F) TRANS TEMP AND engine coolant temp of 50°C
(122°F).
5. Repeat steps 1–4 using several different throttle
angles.
Part Throttle Detent Downshift
At vehicle steeds of 55 to 65km/h (34 to 40mph) in Fourth
gear, quickly increase throttle angle to greater than 50%.
Verify that :
S TCC apply.
S Transaxle downshift to 3rd gear.
S Solenoid 1 turns ON to OFF.
S Solenoid 2 turns OFF.
Full Throttle Detent Downshift
At vehicle speeds of 55 to 65km/h (34 to 40mph)in Fourth
gear, quickly increase throttle angle to its maximum posi-
tion (100%)
Verify that :
S TCC release.
S Transaxle downshift to Second gear immediately.
S Solenoid 1 turns ON to OFF
S Solenoid 2 turns OFF.
Manual Downshifts
1. At vehicle speeds of 60km/h (40mph)in Fourth
gear, release accelerator pedal while moving gear
selector to Manual Third (3). Observe that :
S Transaxle downshift to Third gear immediately.
S Engine slows vehicle down.
2. Move gear selector back to overdrive(D) and accel-
erate to 31mph (50km/h). Release the accelerator
pedal and move the gear selector to Manual
First(1) and observe that :
S Transaxle downshift to second gear immediate-
ly.
S Engine slows vehicle down
Notice : A Manual First––Third Gear Ratio will occur at
high speeds as an upshift safety feature. Do not attempt
to perform this shift.
Coasting Downshifts
1. With the gear selector in Overdrive(D), accelerate
to Fourth gear with TCC applied.
2. Release the accelerator pedal and lightly apply the
brakes, and observe that :
S TCC release.
S Down shifts occur at speeds shown ON the shift
speed chart.
Manual Gear Range Selection
Upshifts in the manual gear ranges are controlled by the
shift solenoids. Perform the following tests by accelerating
at 25 percent TP sensor increments.
Manual Third (3)
S With vehicle stopped, move the gear selector to
Manual third(3) and accelerate to observe :
– 1–2 shift.
– 2–3 shift.
Manual Second (2)
S With vehicle stopped, move the gear selector to
Manual second(2) and accelerate to observe :
– 1–2 shift.
S Accelerate to 40km/h(25mph) and observe :
– 2–3 shift does not occur
– TCC does not apply
Manual First (1)
S With vehicle stopped, move gear selector to Manu-
al First(1). Accelerate to 30km/h(19mph) and ob-
serve :
– No upshifts occur
Reverse (R)
S With vehicle stopped, move gear selector to R(Re-
verse) and observe :
– Solenoid 1 is OFF
– Solenoid 2 is OFF
Use a scan tool to see if any transaxle trouble codes have
been set. Refer to ”Diagnostic Trouble Codes”in this sec-
tion and repair the vehicle as directed. After repairing the
vehicle, perform the hoist test and verify that the code has
not set again.
If the transaxle is not performing well and no trouble codes
have been set, there may be an intermittent condition.
Check all electrical connections for damage or a loose fit.
You also have to perform a snapshot test which can help
catch an intermittent condition that dose not occur long
enough to set a code.
You may want to read ”Electronic Component Diagnosis”
in this section to become familiar with transaxle conditions
caused by transaxle electrical malfunction.
If no trouble codes have been set and the condition is sus-
pected to be hydraulic, take the vehicle on a road test.
TORQUE CONVERTER LOCK–UP
CLUTCH(TCC) DIAGNOSIS
To properly diagnosis the lock–up clutch(TCC) system,
perform all electrical testing first and then the hydraulic
testing.
The TCC is applied by fluid pressure which is controlled by
a solenoid Located inside the valve body. The solenoid is
energized by completing an electrical circuit through a
combination of switches and sensors.

5A1 – 50IZF 4 HP 16 AUTOMATIC TRANSAXLE
DAEWOO V–121 BL4
TCC shudder should only occur during the APPLY and/or
RELEASE of the Lock up clutch.
While TCC Is Applying Or Releasing
If the shudder occurs while TCC is applying, the problem
can be within the transaxle or torque converter.
Something is not allowing the clutch to become fully en-
gaged, not allowing clutch to release, or is trying to release
and apply the clutch at the same time. This could be
caused by leaking turbine shaft seals, a restricted release
orifice, a distorted clutch or housing surface due to long
converter bolts, or defective friction material on the TCC
plate.
Shudder Occurs After TCC Has Applied :
In this case, most of the time there is nothing wrong with
the transaxle! As mentioned above, once the TCC has
been applied, it is very unlikely that will slip. Engine prob-
lems may go unnoticed under light throttle and load, but
become noticeable after TCC apply when going up a hill
or accelerating, due to the mechanical coupling between
engine and transaxle.
Important : Once TCC is applied there is no torque con-
verter assistance. Engine or driveline vibrations could be
unnoticeable before TCC engagement.
Inspect the following components to avoid misdiagnosis of
TCC shudder and possibly disassembling a transaxle and/
or replacing a torque converter unnecessarily :
S Spark plugs – Inspect for cracks, high resistance or
broken insulator.
S Plug wires – Lock in each end, if there is red dust
(ozone) or black substance (carbon) present, then
the wires are bad. Also look for a white discolor-
ation of the wire indicating arcing during hard accel-
eration.
S Distributor cap and rotor – look for broken or un–
crimped parts.
S Coil – look for black on bottom indication arcing
while engine is misfiring.
S Fuel injector – filter may be plugged.
S Vacuum leak – engine won’t get correct amount of
fuel. May run rich or lean depending on where the
leak is.S EGR valve – valve may let it too much unburnable
exhaust gas and cause engine to run lean.
S MAP sensor – like vacuum leak, engine won’t get
correct amount of fuel for proper engine operation.
S Carbon on intake valves – restricts proper flow or
air/fuel mixture into cylinders.
S Flat cam – valves don’t open enough to let proper
fuel/air mixture into cylinders.
S Oxygen sensor – may command engine too rich or
too lean for too long.
S Fuel pressure – may be too low.
S Engine mounts – vibration of mounts can be multi-
plied by TCC engagement.
S Axle joints – checks for vibration.
S TPS – TCC apply and release depends on the TPS
in many engines. If TPS is out of specification, TCC
may remain applied during initial engine starting.
S Cylinder balance – bad piston rings or poorly seal-
ing valves can cause low power in a cylinder.
S Fuel contamination – causes poor engine perfor-
mance.
TCM INITIALIZATION PROCEDURE
When one or more operations such as shown below are
performed, all learned contents which are stored in TCM
memory should be erased after the operations.
S When A/T H/W is replaced in a vehicle,
S When a used TCU is installed in other vehicle,
S When a vehicle condition is unstable (engine RPM
flare, TPS toggling and so on; at this kind of unsta-
ble conditions, mis–adaptation might be done).
1. Connect the Scan 100 with a DLC connector in a
vehicle.
2. Turn ignition switch ON.
3. Turn the power on for the Scan 100.
4. Follow the ”TCM LEARNED INITIALIZE” procedure
on the Scan 100 menu.
Notice : Before pushing ”Yes” Button for TCM initialization
on the Scan 100 screen, make sure that the condition is
as follows:
Condition :
1. Engine idle.
2. Select lever set ”P” range.

5A1 – 52IZF 4 HP 16 AUTOMATIC TRANSAXLE
DAEWOO V–121 BL4
StepNo Yes Value(s) Action
81. Disconnect the internal transaxle harness from
the pressure control valve 4(EDS 4).
2. Measure the resistance of the EDS 4.
Is the resistance within the values shown?Refer to Com-
ponent Resist-
ance ChartGo to Step 20Go to Step 22
9Measure the resistance between terminals 5 and 10
the transaxle wiring connector(EDS 5).
Is the resistance within the values shown?Refer to Com-
ponent Resist-
ance ChartGo to Step 11Go to Step 10
101. Disconnect the internal transaxle harness from
the pressure control valve 5(EDS 5).
2. Measure the resistance of the EDS 5.
Is the resistance within the values shown?Refer to Com-
ponent Resist-
ance ChartGo to Step 20Go to Step 22
11Measure the resistance between terminals 5 and 11
the transaxle wiring connector(EDS 6).
Is the resistance within the values shown?Refer to Com-
ponent Resist-
ance ChartGo to Step 13Go to Step 12
121. Disconnect the internal transaxle harness from
the pressure control valve 6(EDS 6).
2. Measure the resistance of the EDS 6.
Is the resistance within the values shown?Refer to Com-
ponent Resist-
ance ChartGo to Step 20Go to Step 22
13Measure the resistance between terminals 4 and 9
the transaxle wiring connector(transaxle tempera-
ture sensor).
Is the resistance within the values shown?Refer to Com-
ponent Resist-
ance ChartGo to Step 15Go to Step 14
141. Disconnect the internal transaxle harness from
the transaxle temperature sensor.
2. Measure the resistance of the transaxle tem-
perature sensor.
Is the resistance within the values shown?Refer to Com-
ponent Resist-
ance ChartGo to Step 20Go to Step 22
15Measure the resistance between terminals 15 and
16 the transaxle wiring connector(transaxle input
speed sensor).
Is the resistance within the values shown?Refer to Com-
ponent Resist-
ance ChartGo to Step 17Go to Step 16
161. Disconnect the internal transaxle harness from
the transaxle input speed sensor.
2. Measure the resistance of the input speed sen-
sor.
Is the resistance within the values shown?Refer to Com-
ponent Resist-
ance ChartGo to Step 20Go to Step 22
17Measure the resistance between terminals 1 and 2
the transaxle wiring connector(transaxle output
speed sensor).
Is the resistance within the values shown?Refer to Com-
ponent Resist-
ance ChartGo to Step 19Go to Step 18
181. Disconnect the internal transaxle harness from
the transaxle output speed sensor.
2. Measure the resistance of the transaxle output
speed sensor.
Is the resistance within the values shown?Refer to Com-
ponent Resist-
ance ChartGo to Step 20Go to Step 22
19Measure the resistance between terminals of inter-
nal wiring harness.
Is the resistance within the values shown?Refer to Com-
ponent Resist-
ance ChartNo problem
found, exit
tableGo to Step 21