U241E Automatic Transaxle: Other Scion xB II

PRECAUTION

Note. Perform the RESET MEMORY procedures (A/T initialization) when replacing the automatic transaxle assembly, engine assembly or ECM (see INITIALIZATION ).

HINT

RESET MEMORY cannot be completed by only reconnecting the cable to the negative (-) battery terminal.

Note. The automatic transaxle is composed of precision-made parts, necessitating careful inspection before reassembly because even a small nick could cause fluid leakage or affect performance. The procedures are organized so that you work on only one component group at a time. This will help avoid confusion with similar-looking parts from different sub-assemblies being on your workbench at the same time. The component groups are inspected and repaired from the converter housing side. Whenever possible, complete the inspection, repair and reassembly before proceeding to the next component group. If a defect is found in a certain component group during reassembly, inspect and repair this group immediately. If a component group cannot be assembled because parts are being ordered, be sure to keep all parts of the group in a separate container while proceeding with disassembly, inspection, repair and reassembly of other component groups. Use of Toyota Genuine ATF WS is recommended. All disassembled parts should be washed clean, and compressed air should be blown through any fluid passages and holes. Dry all parts with compressed air. Never use a cloth. The recommended ATF or kerosene should be used for cleaning. After cleaning, the parts should be arranged in the order they were removed for efficient inspection, repairs, and reassembly. When disassembling a valve body, be sure to match each valve with its corresponding spring. New discs for the brakes and clutches that will be used for replacement must be soaked in ATF for at least 15 minutes before reassembly. All oil seal rings, clutch discs, clutch plates, rotating parts, and sliding surfaces should be coated with ATF prior to reassembly. All old gaskets and rubber O-rings must be replaced. Do not apply adhesive cement to gaskets and similar parts. Make sure that the ends of the snap rings are not aligned with any cutouts. Also make sure that snap rings are correctly installed into the grooves. If a worn bushing is to be replaced, the sub-assembly containing the bushing must also be replaced. Check the thrust bearings and races for wear or damage. Replace them if necessary. Use petroleum jelly to keep parts in place. When working with FIPG material, perform the following: Using a razor blade and gasket scraper, remove all old FIPG material from the gasket surface. Clean all components thoroughly to remove all foreign matter. Clean both sealing surfaces with a non-residue solvent. Apply FIPG material in a continuous line approximately 1 mm (0.04 in.) in diameter on the sealing surface. Reassemble parts within 10 minutes of applying FIPG material. Failing to do so will require the FIPG material to be removed and reapplied.

DEFINITION OF TERMS

DEFINITION OF TERMS

Scheme 487

Scheme 488

SYSTEM DIAGRAM

The configuration of the electronic control system in the U241E automatic transaxle is as shown in the following illustrations.

Scheme 489

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Scheme 492

MECHANICAL SYSTEM TESTS

1. STALL SPEED TEST HINT: This test is to check the overall performance of the engine and transaxle. NOTE: Do not perform the stall speed test longer than 5 seconds. To ensure safety, perform this test in an open and level area that provides good traction. The stall speed test should always be performed with at least 2 people. One person should observe the condition of the wheels and wheel chocks while the other is performing the test. Connect an intelligent tester or Techstream to the DLC3. Run the vehicle until the transmission fluid temperature has reached 50 to 80°C (122 to 176°F). Allow the engine to idle with the air conditioning OFF. Chock all 4 wheels. Set the parking brake and keep the brake pedal depressed firmly with your left foot. Move the shift lever to the D position. Depress the accelerator pedal as much as possible with your right foot. Read the engine rpm (stall speed) and release the accelerator pedal immediately. Stall speed: 2420 to 2720 rpm Evaluation: TEST RESULT CHART Test Result Possible Cause Stall speed is lower than standard value Engine power may be insufficient Stator one-way clutch is not operating properly HINT: If the value is less than the specified value by 600 rpm or more, the torque converter could be faulty. Stall speed is higher than standard value Line pressure is low C1 clutch slipping F1 one-way clutch is not operating properly F2 one-way clutch is not operating properly NOTE: Perform the test at the normal operating ATF temperature of 50 to 80°C (122 to 176°F).
2. SHIFT TIME LAG TEST HINT: This test is to check the condition of the direct clutch, forward clutch, 1st brake and reverse brake. Connect an intelligent tester or Techstream to the DLC3. Run the vehicle until the transmission fluid temperature has reached 50 to 80°C (122 to 176°F). Allow the engine to idle with the air conditioning OFF. Set the parking brake and keep the brake pedal depressed firmly. Check the D position time lag. Move the shift lever to the N position and wait for 1 minute. Move the shift lever to the D position and measure the time until the shock is felt. Repeat the 2 procedures above 3 times, and calculate the average time of the 3 tests. Check the R position time lag. Move the shift lever to the N position and wait for 1 minute. Move the shift lever to the R position and measure the time until the shock is felt. Repeat the 2 procedures above 3 times, and calculate the average time of the 3 tests. Standard value: D position time lag is less than 1.2 seconds. R position time lag is less than 1.5 seconds. Evaluation: TEST RESULT CHART Test Result Possible Cause D position time lag exceeds standard value Line pressure is low C1 clutch is worn F1 one-way clutch is not operating properly F2 one-way clutch is not operating properly R position time lag exceeds standard value Line pressure is low C2 clutch is worn B2 brake is worn B3 brake is worn

Scheme 493

1. MEASURE LINE PRESSURE NOTE: Perform the test at the normal operating ATF temperature: 50 to 80°C (122 to 176°F). The line pressure test should always be performed with at least 2 people. One person should observe the condition of the wheels or wheel chocks while the other is performing the test. Be careful to prevent SST's hose from interfering with the exhaust pipe. This test must be performed after checking and adjusting the engine. Perform the test with the A/C OFF. When conducting the stall test, do not continue for more than 10 seconds. Warm up the ATF. Remove the test plug on the transaxle case center right side and connect SST. SST 09992-00095 (09992-00231, 09992-00271) Fully apply the parking brake and chock the 4 wheels. Start the engine and check the idling speed. Keep your left foot firmly on the brake pedal and move the shift lever to D position. Measure the line pressure when the engine is idling. Depress the accelerator pedal as much as possible with your right foot. Quickly read the highest line pressure reading when the engine speed reaches stall speed. Perform the measure line pressure test again with the shift lever on R position. Specified line pressure: SPECIFIED LINE PRESSURE Conditions D position kPa (kgf/cm 2 , psi) R position kPa (kgf/cm 2 , psi) Idling 372 to 412 kPa (3.8 to 4.2 kgf/cm 2 , 54 to 60 psi) 672 to 742 kPa (6.9 to 7.6 kgf/cm 2 , 97 to 108 psi) Stall 931 to 1,031 kPa (9.5 to 10.5 kgf/cm 2 , 135 to 150 psi) 1,768 to 1,968 kPa (18.0 to 20.0 kgf/cm 2 , 256 to 285 psi) Evaluation: PROBLEM SYMPTOM CHART Problem Possible Cause Measured values at all positions are higher than specified Shift solenoid valve SLT defective Regulator valve defective Measured values at all positions are lower than specified Shift solenoid valve SLT defective Regulator valve defective Oil pump defective U/D (underdrive) direct clutch defective Pressure is low when shift lever is on D only D position circuit fluid leak Forward clutch defective Pressure is low when shift lever is on R only R position circuit fluid leak Direct clutch defective 1st and reverse brake defective

Scheme 494

1. PERFORM MANUAL SHIFTING TEST HINT: With this test, it can be determined whether the trouble occurs in the electrical circuit or is a mechanical problem in the transaxle. If any abnormalities are found in the following test, the problem is in the transaxle itself. Disconnect the transmission wire connector. Drive with the transmission wire disconnected. Shif the shift lever to the D position to check whether the shifting condition changes according to the table below. SHIFTING CONDITION CHART Shift Position Shifting Condition D No Shift (Not Change) P P R R HINT: When driving with the transmission wire disconnected, and the shift lever position is in D, the gear position is held in 3rd. However, when the shift position is in R or P, the operation is same as usual. Connect the connector of the transmission wire. Clear the DTC.

INITIALIZATION

1. RESET MEMORY NOTE: Perform the RESET MEMORY (AT initialization) when replacing the automatic transaxle assembly, engine assembly or ECM. The RESET MEMORY can be performed only with an intelligent tester or Techstream. HINT: The ECM stores the control conditions of the automatic transaxle assembly and engine assembly. Therefore, when the automatic transaxle assembly, engine assembly, or ECM has been replaced, it is necessary to reset the memory so that the ECM can store the new information. The reset procedure is as follows. Connect an intelligent tester or Techstream to the DLC3. Turn the ignition switch to ON and turn the tester switch ON. Enter the following menus: Intelligent tester - Select: DIAGNOSIS / ENHANCED OBD II / RESET MEMORY. Techstream - Select: Powertrain / Engine and ECT / Utility / Reset Memory. NOTE: After performing the RESET MEMORY, be sure to perform the ROAD TEST (see «ROAD TEST»(ref-289742-S05313888322008070700000) ) described earlier. HINT: The ECM learns through the ROAD TEST.

Scheme 495

1. TEST MONITOR DRIVE PATTERN FOR ECT CAUTION: Perform this drive pattern on a level surface and strictly observe the posted speed limits and traffic laws while driving. HINT: Performing this drive pattern is one method to simulate the ECT's malfunction detection conditions. The DTCs may not be detected through ordinary, everyday driving. Also, DTCs may not be detected through this drive pattern. Preparation for driving Warm up the engine sufficiently (engine coolant temperature is 60°C (140°F) or higher). Drive the vehicle when the atmospheric temperature is -10°C (14°F) or higher. Malfunction is not detected when the atmospheric temperature is less than -10°C Drive pattern Drive the vehicle through all the gears. Stop --> 1st --> 2nd --> 3rd --> 4th --> 4th (lock-up ON). Repeat the above drive pattern 3 times or more. NOTE: When using an intelligent tester or Techstream, the monitor status can be checked in the DATA LIST (see «DATA LIST / ACTIVE TEST»(ref-289742-S16841921232008070700000) ). In the event that the drive pattern must be interrupted (due to traffic conditions or other factors), the drive pattern can be resumed and, in most cases, the monitor can be completed. CAUTION: Perform this drive pattern on a level road as much as possible and strictly observe the posted speed limits and traffic laws while driving. HINT: *: Drive at such a speed in the uppermost gear to engage lock-up. The vehicle can be driven at a speed lower than the speed shown in the above diagram under the lock-up condition. NOTE: It is necessary to drive the vehicle for approximately 30 minutes to detect DTC P0711 (Transmission fluid temperature sensor "A" performance).

CHAPTER 1: ELECTRICAL CIRCUIT MATRIX CHART

CHAPTER 1: ELECTRICAL CIRCUIT MATRIX CHART

CHAPTER 2: ON-VEHICLE REPAIR AND OFF-VEHICLE REPAIR

CHAPTER 2: ON-VEHICLE REPAIR AND OFF-VEHICLE REPAIR

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Scheme 500

1. CHECK ECM Measure the voltage of the ECM connector. HINT: Each ECM terminal's standard voltage is shown in the table below. In the table, first follow the information under "Condition". Look under "Terminal No. (Symbols)" for the terminals to be inspected. The standard voltage between the terminals is shown under "Specified Condition". Use (Scheme 496) as a reference for the ECM terminals. TERMINAL DESCRIPTION SPECIFIED CONDITION CHART Terminal No. (Symbols) Wiring Color Terminal Description Condition Specified Condition B33-52 (NSW) - B33-104 (E1) W-BR Park/Neutral position switch signal Ignition switch ON Shift lever on P or N Below 2 V B33-52 (NSW) - B33-104 (E1) W-BR Park/Neutral position switch signal Ignition switch ON Shift lever not on P or N 11 to 14 V A36-48 (STA) - B33-104 (E1) LG - BR Park/Neutral position switch signal Cranking 6.0 V or more B33-73 (P) - B33-104 (E1) V - BR P shift position switch signal Ignition switch ON Shift lever on P 11 to 14 V B33-73 (P) - B33-104 (E1) V - BR P shift position switch signal Ignition switch ON Shift lever not on P Below 1 V B33-53 (R) - B33-104 (E1) R - BR R shift position switch signal Ignition switch ON Shift lever on R 11 to 14 V B33-53 (R) - B33-104 (E1) R - BR R shift position switch signal Ignition switch ON Shift lever not on R Below 1 V B33-54 (N) - B33-104 (E1) B - BR N shift position switch signal Ignition switch ON Shift lever on N 11 to 14 V B33-54 (N) - B33-104 (E1) B - BR N shift position switch signal Ignition switch ON Shift lever not on N Below 1 V B33-56 (D) - B33-104 (E1) P - BR D shift position switch signal Ignition switch ON Shift lever on D 11 to 14 V B33-56 (D) - B33-104 (E1) P - BR D shift position switch signal Ignition switch ON Shift lever not on D Below 1 V B33-74 (S) - B33-104 (E1) L - BR S shift position switch signal Ignition switch ON Shift lever on S 11 to 14 V B33-74 (S) - B33-104 (E1) L - BR S shift position switch signal Ignition switch ON Shift lever not on S Below 1 V A36-16 (SFTU) - B33-104 (E1) W-L - BR Up-shift position switch signal Ignition switch ON Shift lever on S 11 to 14 V A36-16 (SFTU) - B33-104 (E1) W-L - BR Up-shift position switch signal Ignition switch ON Shift lever "+" position (up-shift) Below 1 V A36-51 (SFTD) - B33-104 (E1) R - BR Down-shift position switch signal Ignition switch ON Shift lever on S 11 to 14 V A36-51 (SFTD) - B33-104 (E1) R - BR Down-shift position switch signal Ignition switch ON Shift lever "-" position (down-shift) Below 1 V A36-36 (STP) - B33-104 (E1) L - BR Stop light switch signal Brake pedal is depressed Between 10 V and 14 V A36-36 (STP) - B33-104 (E1) L - BR Stop light switch signal Brake pedal is released Below 1 V B33-57 (SL1+) - B33-77 (SL1-) G-P SL1 solenoid signal Engine idle speed Pulse generation (see b waveform 1) B33-57 (SL1+) - B33-77 (SL1-) G-P SL1 solenoid signal Ignition switch ON Pulse generation (see b waveform 1) B33-57 (SL1+) - B33-77 (SL1-) G-P SL1 solenoid signal 1st gear Pulse generation (see b waveform 1) B33-57 (SL1+) - B33-77 (SL1-) G-P SL1 solenoid signal Not on 1st gear Below 1 V B33-58 (SL2+) - B33-59 (SL2-) Y-R SL2 solenoid signal Engine idle speed Pulse generation (see c waveform 2) B33-58 (SL2+) - B33-59 (SL2-) Y-R SL2 solenoid signal Ignition switch ON Pulse generation (see c waveform 2) B33-58 (SL2+) - B33-59 (SL2-) Y-R SL2 solenoid signal 1st or 2nd gear Pulse generation (see c waveform 2) B33-58 (SL2+) - B33-59 (SL2-) Y-R SL2 solenoid signal 3rd or 4th gear Below 1 V B33-79 (DSL) - B33-104 (E1) G - BR DSL solenoid signal Vehicle speed 65 km/h (40 mph), lock-up (ON to OFF) Below 1 V B33-79 (DSL) - B33-104 (E1) G - BR DSL solenoid signal Vehicle driving under lockup position Pulse generation (see d waveform 3) B33-76 (SLT+) - B33-75 (SLT-) R-GR SLT solenoid signal Engine idle speed Pulse generation (see e waveform 4) B33-78 (S4) - B33-104 (E1) W - BR S4 solenoid signal Ignition switch ON Below 1 V B33-78 (S4) - B33-104 (E1) W - BR S4 solenoid signal 4th gear 11 to 14 V B33-78 (S4) - B33-104 (E1) W - BR S4 solenoid signal Not on 4th gear Below 1 V B33-72 (THO1) - B33-95 (ETHO) LG - BR ATF temperature sensor signal ATF temperature: 115°C (239°F) or more Below 1.5 V B33-125 (NT+) - B33-124 (NT-) W-L Speed sensor NT signal Vehicle speed 20 km/h (12 mph) Pulse generation (see f waveform 5) B33-101 (NC+) - B33-102 (NC-) R-W Speed sensor NC signal Vehicle speed 30 km/h (19 mph): (3rd gear) Engine speed 1,400 rpm Pulse generation (see g waveform 6) Using an oscilloscope, check the waveform 1. Waveform 1 WAVEFORM 1 REFERENCE Item Content Terminal No. (Symbols) B33-57 (SL1+) - B33-77 (SL1-) Tool Setting 5 V/DIV., 1 msec./.DIV. Condition Engine idle speed Using an oscilloscope, check the waveform 2. Waveform 2 WAVEFORM 2 REFERENCE Item Content Terminal No. (Symbols) B33-58 (SL2+) - B33-59 (SL2-) Tool Setting 5 V/DIV., 1 msec./DIV. Condition Engine idle speed Using an oscilloscope, check the waveform 3. Waveform 3 WAVEFORM 3 REFERENCE Item Content Terminal No. (Symbols) B33-79 (DSL) - B33-104 (E01) Tool Setting 10 V/DIV, 100 msec./DIV. Condition Vehicle speed 65 km/h (40 mph), lock-up (ON to OFF) Using an oscilloscope, check the waveform 4. Waveform 4 WAVEFORM 4 REFERENCE Item Content Terminal No. (Symbols) B33-76 (SLT+) - B33-75 (SLT-) Tool Setting 5 V/DIV., 1 msec./DIV. Condition Engine idle speed Using an oscilloscope, check the waveform 5. Waveform 5 WAVEFORM 5 REFERENCE Item Content Terminal No. (Symbols) B33-125 (NT+) - B33-124 (NT-) Tool Setting 5 V/DIV., 0.5 msec./DIV. Condition Vehicle speed 20 km/h (12 mph) Using an oscilloscope, check the waveform 6. Waveform 6 WAVEFORM 6 REFERENCE Item Content Terminal No. (Symbols) B33-101 (NC+) - B33-102 (NC-) Tool Setting 1 V/DIV., 1 msec./DIV. Condition Vehicle speed 30 km/h (19 mph): (3rd gear) Engine speed 1,400 rpm

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1. DESCRIPTION When troubleshooting On-Board Diagnostic (OBD II) vehicles, the vehicle must be connected to the OBD II scan tool (complying with SAE J1987). Various data output from the vehicle's ECM can then be read. OBD II regulations require that the vehicle's onboard computer illuminates the Malfunction Indicator Lamp (MIL) on the instrument panel when the computer detects a malfunction in: The emission control system/components The powertrain control components (which affect vehicle emissions) The computer In addition, the applicable Diagnostic Trouble Codes (DTCs) prescribed by SAE J2012 are recorded in the ECM memory. When the malfunction does not reoccur, the MIL stays illuminated until the ignition switch is turned OFF, and the MIL turns OFF when the engine is started. However, the DTCs remain recorded in the ECM memory. To check DTCs, connect an intelligent tester or Techstream to the Data Link Connector 3 (DLC3) of the vehicle. The tester displays DTCs, the freeze frame data and a variety of the engine data. The DTCs and freeze frame data can be erased with the tester (see «DTC CHECK / CLEAR»(ref-289742-S26641317662008070700000) ).
2. NORMAL MODE AND CHECK MODE The diagnosis system operates in "normal mode" during normal vehicle use. In normal mode, "2 trip detection logic" is used to ensure accurate detection of malfunctions. "Check mode" is also available to technicians as an option. In check mode, "1 trip detection logic" is used for simulating malfunction symptoms and increasing the system's ability to detect malfunctions, including intermittent malfunctions.
3. TRIP DETECTION LOGIC When a malfunction is first detected, the malfunction is temporarily stored in the ECM memory (1st trip). If the same malfunction is detected during the next drive cycle, the MIL is illuminated (2nd trip).
4. FREEZE FRAME DATA Freeze frame data records the engine conditions (fuel system, calculated load, engine coolant temperature, fuel trim, engine speed, vehicle speed, etc.) when a malfunction is detected. When troubleshooting, freeze frame data can help determine if the vehicle was running or stopped, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data from the time the malfunction occurred. The intelligent tester or Techstream records freeze frame data in 5 different instances: 1) 3 times before the DTC is set, 2) once when the DTC is set, and 3) once after the DTC is set. These data can be used to simulate the vehicle's condition around the time when the malfunction occurred. The data may help find the cause of the malfunction, or judge if the DTC is being caused by a temporary malfunction or not.
5. DATA LINK CONNECTOR 3 (DLC3) (See «HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS»(ref-289756-S19835601092008070700000) )
6. CHECK MIL Check that the MIL illuminates when turning the ignition switch ON. If the MIL does not illuminate, there is a problem in the MIL circuit (see «MIL CIRCUIT»(ref-289755-S18237252222008070700000) ). When the engine is started, the MIL should turn off.

FAIL-SAFE CHART

1. FAIL-SAFE CHART This function minimizes the loss of the ECT functions when a malfunction occurs in a sensor or solenoid. Automatic Transmission Fluid (ATF) temperature sensor: When the ATF temperature sensor has a malfunction, 4 up-shift is prohibited. Counter gear speed sensor NC (Speed sensor NC): When the counter gear speed sensor has a malfunction, 4 up-shift is prohibited. Shift solenoid valve DSL: When the solenoid valve DSL has a malfunction, the current to the solenoid valve is stopped. This stops lock-up control, then fuel economy decreases. Shift solenoid valve SL1, SL2 and S4: If any of the shift solenoid valve circuits develops an open or short, the ECM turns the other shift solenoid "ON" and "OFF" in order to shift into the gear positions shown in the table below. Manual shifting as shown in the following table must be done. In case of a short circuit, the ECM stops sending the current to the short circuited solenoid. Even if starting the engine in the fail-safe mode, the gear position remains in the same position. SHIFT SOLENOID VALVE SL1 AND SL2 SPECIFICATIONS Normal Shift Solenoid Valve SL1 Shift Solenoid Valve SL2 Shift Solenoid Valve S4 Gear Solenoid Valve Gear Solenoid Valve Gear Solenoid Valve Gear Solenoid Valve SL1 SL2 S4 SL1 SL2 S4 SL1 SL2 S4 SL1 SL2 S4 1st ON ON OFF 2nd X ON OFF 3rd ON ↓ OFF X OFF 1st ON ON X 2nd OFF ON OFF 2nd X ON OFF 3rd OFF X OFF 2nd OFF ON X 3rd OFF OFF OFF 3rd X OFF ↓ ON OFF ↓ ON 3rd OFF X OFF 3rd OFF OFF X 4th OFF OFF ON 3rd X OFF ↓ ON ON 4th OFF X ON 3rd OFF OFF X HINT: ↓: Condition in the normal operation is shown above the "↓". ↓: Condition in the fail-safe mode is shown beneath the "↓". E/B: Engine brake. SHIFT SOLENOID VALVE SL1 & S4 AND SL2 & S4 SPECIFICATIONS Shift Solenoid Valve SL1 and SL2 Shift Solenoid Valve SL1 and S4 Shift Solenoid Valve SL2 and S4 Shift Solenoid Valve SL1, SL2 and S4 Gear Solenoid Valve Gear Solenoid Valve Gear Solenoid Valve Gear Solenoid Valve SL1 SL2 S4 SL1 SL2 S4 SL1 SL2 S4 SL1 SL2 S4 3rd X X OFF 2nd X ON X 3rd ON ↓ OFF X X 3rd X X X 3rd X X OFF 2nd X ON X 3rd OFF X X 3rd X X X 3rd X X OFF 2nd X OFF ↓ ON X 3rd OFF X X 3rd X X X 4th X X ON 2nd X OFF ↓ ON X 3rd OFF X X 3rd X X X HINT: ↓: Condition in the normal operation is shown above the "↓". ↓: Condition in the fail-safe mode is shown beneath the "↓". E/B: Engine brake.

MONITOR STRATEGY

MONITOR STRATEGY CHART

TYPICAL ENABLING CONDITIONS

All

TYPICAL ENABLING CONDITIONS CHART - ALL

TYPICAL MALFUNCTION THRESHOLDS

One of the following conditions is met: Condition (A), (B), (C) or (D)

Condition (A)

TYPICAL MALFUNCTION THRESHOLDS CHART - CONDITION (A)

Condition (B)

TYPICAL MALFUNCTION THRESHOLDS CHART - CONDITION (B)

Condition (C)

When the shift lever is in the S position, one of the following conditions is met

TYPICAL MALFUNCTION THRESHOLDS CHART - CONDITION (C)

Condition (D)

All of the following conditions are met

TYPICAL MALFUNCTION THRESHOLDS CHART - CONDITION (D)

COMPONENT OPERATING RANGE

COMPONENT OPERATING RANGE CHART

Scheme 503

MONITOR STRATEGY CHART

P0710, P0712: Range check (Chattering, Low resistance)

P0710, P0712: RANGE CHECK (CHATTERING, LOW RESISTANCE)

P0713: Range check (High resistance)

P0713: RANGE CHECK (HIGH RESISTANCE)

P0710: Range check (Chattering)

P0710: RANGE CHECK (CHATTERING)

P0712: Range check (Low resistance)

P0712: RANGE CHECK (LOW RESISTANCE)

P0713: Range check (High resistance)

P0713: RANGE CHECK (HIGH RESISTANCE)

COMPONENT OPERATING RANGE CHART

Scheme 504

MONITOR STRATEGY CHART

All

TYPICAL ENABLING CONDITIONS CHART - ALL

Condition (A)

TYPICAL ENABLING CONDITIONS CHART - CONDITION (A)

Condition (B)

TYPICAL ENABLING CONDITIONS CHART - CONDITION (B)

Condition (A)

TYPICAL MALFUNCTION THRESHOLDS CHART - CONDITION (A)

Condition (B)

TYPICAL MALFUNCTION THRESHOLDS CHART - CONDITION (B)

COMPONENT OPERATING RANGE CHART

MONITOR STRATEGY CHART

TYPICAL ENABLING CONDITIONS CHART

TYPICAL MALFUNCTION THRESHOLDS CHART

COMPONENT OPERATING RANGE CHART

Scheme 505

MONITOR STRATEGY CHART

All

TYPICAL ENABLING CONDITIONS CHART - ALL

OFF malfunction

TYPICAL ENABLING CONDITIONS CHART - OFF MALFUNCTION

ON malfunction

TYPICAL ENABLING CONDITIONS CHART- ON MALFUNCTION

Either of the following conditions is met: OFF malfunction or ON malfunction

OFF malfunction

TYPICAL MALFUNCTION THRESHOLDS CHART - OFF MALFUNCTION

ON malfunction

TYPICAL MALFUNCTION THRESHOLDS CHART - ON MALFUNCTION

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1. ACTIVE TEST HINT: Using an intelligent tester or Techstream Active Test allows the relay, VSV, actuator and other items to be operated without removing any parts. Performing the Active Test early in troubleshooting is one way to save time. The Data List can be displayed during the Active Test. Warm up the engine. Turn the ignition switch to OFF. Connect the intelligent tester or Techstream to the DLC3. Turn the ignition switch to ON and turn the tester switch ON. Enter the following menus: Intelligent tester - Select: DIAGNOSIS / ENHANCED OBD II / ACTIVE TEST. Techstream - Select: Powertrain / Engine and ECT / Active Test. Follow the instructions on the tester and perform the Active Test. Intelligent tester ACTIVE TEST - INTELLIGENT TESTER Tester Display Test Part Control Range Diagnostic Note LOCK UP Control shift solenoid DSL to set automatic transaxle to lock-up condition ON/OFF Possible to check shift solenoid valve DSL operation [Vehicle Condition] Throttle valve opening angle: Less than 35% Vehicle speed: 60 km/h (36 mph) or more Techstream ACTIVE TEST - TECHSTREAM Tester Display Test Part Control Range Diagnostic Note Active the Lock Up Control shift solenoid DSL to set automatic transaxle to lock-up condition ON/OFF Possible to check shift solenoid valve DSL operation [Vehicle Condition] Throttle valve opening angle: Less than 35% Vehicle speed: 60 km/h (36 mph) or more HINT: This test can be conducted when the vehicle speed is 60 km/h (36 mph) or more. This test can be conducted in the 3rd or 4th gear. Lightly depress the accelerator pedal and check that the engine speed does not change abruptly. HINT: When changing the accelerator pedal opening angle while driving, if the engine speed does not change, lock-up is ON. Slowly release the accelerator pedal in order to decelerate. (Do not fully release the pedal as that will close the throttle valve and lock-up may be turned OFF.)

Scheme 508

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Scheme 510

1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P0741) Connect an intelligent tester or Techstream to the DLC3. Turn the ignition switch to ON and turn the tester switch ON. Enter the following menus: Intelligent tester - Select: DIAGNOSIS / ENHANCED OBD II / DTC INFO / CURRENT CODES. Techstream - Select: Powertrain / Engine and ECT / Trouble Codes. Read the DTCs using the tester. Result RESULT CHART Result Proceed to Only P0741 is output A P0741 and other DTCs are output B HINT: If any other codes besides P0741 are output, perform troubleshooting for those DTCs first. B: Go TO «DTC CHART»(ref-289742-S40967299482008070700000) A: Go to next step
2. INSPECT TRANSMISSION WIRE (SHIFT SOLENOID VALVE DSL) Disconnect the B20 transmission wire connector. Measure the resistance according to the value(s) in the table below. Standard resistance TESTER CONNECTION SPECIFIED CONDITION CHART Tester Connection Condition Specified Condition 3 (DSL) - Body ground 20°C (68°F) 11 to 13 ohms NG: Go to step 4 OK: Go to next step
3. CHECK HARNESS AND CONNECTOR (TRANSMISSION WIRE - ECM) Disconnect the B33 ECM connector. Measure the resistance according to the value(s) in the table below. Standard resistance TESTER CONNECTION SPECIFIED CONDITION CHART Tester Connection Condition Specified Condition B33-79 (DSL) - Body ground 20°C (68°F) 11 to 13 ohms NG : REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
4. INSPECT SHIFT SOLENOID VALVE DSL Remove the shift solenoid valve DSL. Measure the resistance according to the value(s) in the table below. Standard resistance TESTER CONNECTION SPECIFIED CONDITION CHART Tester Connection Condition Specified Condition Solenoid valve connector (DSL) - Solenoid body (DSL) 20°C (68°F) 11 to 13 ohms Connect the battery's positive (+) lead to the terminal of the solenoid valve connector, and the negative (-) lead to the solenoid body. Then check that the valve moves and makes an operating sound. OK: Valve moves and makes operating sound. NG : REPLACE SHIFT SOLENOID VALVE DSL (See «DISASSEMBLY»(ref-289742-S13508815532008070700000) ) OK: Go to next step
5. CHECK TRANSMISSION WIRE OK: The connectors and pins are securely installed. There is no open or short on the wire harness. NG : REPAIR OR REPLACE TRANSMISSION WIRE (See «REMOVAL»(ref-289742-S30058052042008070700000) ) OK: Go to next step
6. INSPECT TRANSMISSION VALVE BODY ASSEMBLY Check the transmission valve body assembly. OK: There are no foreign objects on each valve. NG : REPAIR OR REPLACE TRANSMISSION VALVE BODY ASSEMBLY (See «REMOVAL»(ref-289742-S08550191542008070700000) ) OK: Go to next step
7. INSPECT TORQUE CONVERTER CLUTCH ASSEMBLY Check the torque converter clutch assembly (see «TORQUE CONVERTER AND DRIVE PLATE»(ref-289742-S35843826262008070700000) ). OK: The torque converter clutch operates normally. NG : REPLACE TORQUE CONVERTER CLUTCH ASSEMBLY (See «REMOVAL»(ref-289742-S31259398672008070700000) ) OK : REPAIR AUTOMATIC TRANSAXLE ASSEMBLY (See «REMOVAL»(ref-289742-S31259398672008070700000) )

MONITOR STRATEGY CHART

All

TYPICAL ENABLING CONDITIONS CHART - ALL

OFF malfunction

TYPICAL ENABLING CONDITIONS CHART - OFF MALFUNCTION

ON malfunction (A)

TYPICAL ENABLING CONDITIONS CHART - ON MALFUNCTION (A)

ON malfunction (B)

TYPICAL ENABLING CONDITIONS CHART - ON MALFUNCTION (B)

Either of the following conditions is met

OFF malfunction, or ON malfunction (A) and (B)

2 detections are necessary per driving cycle

1st detection: temporary flag ON

2nd detection: pending fault code ON

OFF malfunction

TYPICAL MALFUNCTION THRESHOLDS CHART - OFF MALFUNCTION

ON malfunction (A)

TYPICAL MALFUNCTION THRESHOLDS CHART - ON MALFUNCTION (A)

ON malfunction (B)

TYPICAL MALFUNCTION THRESHOLDS CHART - ON MALFUNCTION (B)

MONITOR STRATEGY CHART

TYPICAL ENABLING CONDITIONS CHART

TYPICAL MALFUNCTION THRESHOLDS CHART

COMPONENT OPERATING RANGE CHART

Scheme 511

Scheme 512

Scheme 513

Scheme 514

1. INSPECT TRANSMISSION WIRE (SHIFT SOLENOID VALVE SL1) Disconnect the B20 transmission wire connector. Measure the resistance according to the value(s) in the table below. Standard resistance TESTER CONNECTION SPECIFIED CONDITION CHART Tester Connection Condition Specified Condition 5 (SL1+) - 10 (SL1-) 20°C (68°F) 5.0 to 5.6 ohms 5 (SL1+) - Body ground Always 10 kohms or higher 10 (SL1-) - Body ground Always 10 kohms or higher NG: Go to step 3 OK: Go to next step
2. CHECK HARNESS AND CONNECTOR (TRANSMISSION WIRE - ECM) Disconnect the B33 ECM connector. Measure the resistance according to the value(s) in the table below. Standard resistance TESTER CONNECTION SPECIFIED CONDITION CHART Tester Connection Condition Specified Condition B33-57 (SL1+) - B33-77 (SL1-) 20°C (68°F) 5.0 to 5.6 ohms B33-57 (SL1+) - Body ground Always 10 kohms or higher B33-77 (SL1-) - Body ground Always 10 kohms or higher NG : REPAIR OR REPLACE HARNESS OR CONNECTOR OK : REPLACE ECM (See «REMOVAL»(ref-289755-S30892603852008070700000) )
3. INSPECT SHIFT SOLENOID VALVE SL1 Remove the shift solenoid valve SL1. Measure the resistance according to the value(s) in the table below. Standard resistance TESTER CONNECTION SPECIFIED CONDITION CHART Tester Connection Condition Specified Condition 1-2 20°C (68°F) 5.0 to 5.6 ohms Connect the battery's positive (+) lead with a 21 W bulb to terminal 2 and the negative (-) lead to terminal 1 of the solenoid valve connector. Then check that the valve moves and makes an operating sound. OK: Valve moves and makes operating sound. NG : REPLACE SHIFT SOLENOID VALVE SL1 (See «DISASSEMBLY»(ref-289742-S13508815532008070700000) ) OK : REPAIR OR REPLACE TRANSMISSION WIRE (See «REMOVAL»(ref-289742-S30058052042008070700000) )

MONITOR STRATEGY CHART

All

TYPICAL ENABLING CONDITIONS CHART - ALL

OFF malfunction

TYPICAL ENABLING CONDITIONS CHART - OFF MALFUNCTION

ON malfunction

TYPICAL ENABLING CONDITIONS CHART - ON MALFUNCTION

Either of the following conditions is met

OFF malfunction or ON malfunction

2 detections are necessary per driving cycle

1st detection: temporary flag ON

2nd detection: pending fault code ON

OFF malfunction

TYPICAL MALFUNCTION THRESHOLDS CHART - OFF MALFUNCTION

ON malfunction

TYPICAL MALFUNCTION THRESHOLDS CHART - ON MALFUNCTION

MONITOR STRATEGY CHART

All

TYPICAL ENABLING CONDITIONS CHART - ALL

OFF malfunction

TYPICAL ENABLING CONDITIONS CHART - OFF MALFUNCTION

ON malfunction

TYPICAL ENABLING CONDITIONS CHART - ON MALFUNCTION

Either of the following conditions is met

OFF malfunction or ON malfunction

2 detections are necessary per driving cycle

1st detection: temporary flag ON

2nd detection: pending fault code ON

OFF malfunction

TYPICAL MALFUNCTION THRESHOLDS CHART - OFF MALFUNCTION

ON malfunction

TYPICAL MALFUNCTION THRESHOLDS CHART - ON MALFUNCTION

MONITOR STRATEGY CHART

TYPICAL ENABLING CONDITIONS CHART

TYPICAL MALFUNCTION THRESHOLDS CHART

COMPONENT OPERATING RANGE CHART

Scheme 515

Scheme 516

Scheme 517

Scheme 518

1. INSPECT TRANSMISSION WIRE (SHIFT SOLENOID VALVE SL2) Disconnect the B20 transmission wire connector. Measure the resistance according to the value(s) in the table below. Standard resistance TESTER CONNECTION SPECIFIED CONDITION CHART Tester Connection Condition Specified Condition 4 (SL2+) - 9 (SL2-) 20°C (68°F) 5.0 to 5.6 ohms 4 (SL2+) - Body ground Always 10 kohms or higher 9 (SL2-) - Body ground Always 10 kohms or higher NG: Go to step 3 OK: Go to next step
2. CHECK HARNESS AND CONNECTOR (TRANSMISSION WIRE - ECM) Disconnect the B33 ECM connector. Measure the resistance according to the value(s) in the table below. Standard resistance TESTER CONNECTION SPECIFIED CONDITION CHART Tester Connection Condition Specified Condition B33-58 (SL2+) - B33-59 (SL2-) 20°C (68°F) 5.0 to 5.6 ohms B33-58 (SL2+) - Body ground Always 10 kohms or higher B33-59 (SL2-) - Body ground Always 10 kohms or higher NG : REPAIR OR REPLACE HARNESS OR CONNECTOR OK : REPLACE ECM (See «REMOVAL»(ref-289755-S30892603852008070700000) )
3. INSPECT SHIFT SOLENOID VALVE SL2 Remove the shift solenoid valve SL2. Measure the resistance according to the value(s) in the table below. Standard resistance TESTER CONNECTION SPECIFIED CONDITION CHART Tester Connection Condition Specified Condition 1-2 20°C (68°F) 5.0 to 5.6 ohms Connect the battery's positive (+) lead with a 21 W bulb to terminal 2 and the negative (-) lead to terminal 1 of the solenoid valve connector. Then check that the valve moves and makes an operating sound. OK: Valve moves and makes operating sound. NG : REPLACE SHIFT SOLENOID VALVE SL2 (See «DISASSEMBLY»(ref-289742-S13508815532008070700000) ) OK : REPAIR OR REPLACE TRANSMISSION WIRE (See «REMOVAL»(ref-289742-S30058052042008070700000) )

MONITOR STRATEGY CHART

TYPICAL ENABLING CONDITIONS CHART

TYPICAL MALFUNCTION THRESHOLDS CHART

COMPONENT OPERATING RANGE CHART

Scheme 519

MONITOR STRATEGY CHART

P0982: Range check (Low resistance)

P0982: RANGE CHECK (LOW RESISTANCE)

P0983: Range check (High resistance)

P0983: RANGE CHECK (HIGH RESISTANCE)

P0982: Range check (Low resistance)

P0982: RANGE CHECK (LOW RESISTANCE)

P0983: Range check (High resistance)

P0983: RANGE CHECK (HIGH RESISTANCE)

COMPONENT OPERATING RANGE CHART

Scheme 520

Scheme 521

Scheme 522

Scheme 523

1. INSPECT TRANSMISSION WIRE (SHIFT SOLENOID VALVE S4) Disconnect the B20 transmission wire connector. Measure the resistance according to the value(s) in the table below. Standard resistance TESTER CONNECTION SPECIFIED CONDITION CHART Tester Connection Condition Specified Condition 8 (S4) - Body ground 20°C (68°F) 11 to 15 ohms NG: Go to step 3 OK: Go to next step
2. CHECK WIRE HARNESS (TRANSMISSION WIRE - ECM) Disconnect the B33 ECM connector. Measure the resistance according to the value(s) in the table below. Standard resistance TESTER CONNECTION SPECIFIED CONDITION CHART Tester Connection Condition Specified Condition B33-78 (S4) - Body ground 20°C (68°F) 11 to 15 ohms NG : REPAIR OR REPLACE HARNESS AND CONNECTOR OK : REPLACE ECM (See «REMOVAL»(ref-289755-S30892603852008070700000) )
3. INSPECT SHIFT SOLENOID VALVE S4 Remove the shift solenoid valve S4. Measure the resistance according to the value(s) in the table below. Standard resistance TESTER CONNECTION SPECIFIED CONDITION CHART Tester Connection Condition Specified Condition Solenoid valve connector (S4) - Solenoid body (S4) 20°C (68°F) 11 to 15 ohms Connect the battery's positive (+) lead to the terminal of the solenoid valve connector, and the negative (-) lead to the solenoid body. Then check that the valve moves and makes an operating sound. OK: Valve moves and makes operating sound. NG : REPLACE SHIFT SOLENOID VALVE S4 (See «DISASSEMBLY»(ref-289742-S13508815532008070700000) ) OK : REPAIR OR REPLACE TRANSMISSION WIRE (See «REMOVAL»(ref-289742-S30058052042008070700000) )

Scheme 524

The throttle pressure that is applied to the primary regulator valve (which modulates the line pressure) causes the solenoid valve SLT, under electronic control, to precisely modulate and generate the line pressure according to the extent that the accelerator pedal is depressed or the output of engine power. This controls the line pressure and provides smooth shifting characteristics.

Upon receiving a throttle valve opening angle signal, the ECM controls the line pressure by sending a predetermined duty ratio* to the solenoid valve, modulating the line pressure and generating throttle pressure.

HINT

*: The duty ratio is the ratio of the current ON time (A) to the total of the current ON and OFF time (A + B).

Duty Ratio (%) = A / (A + B) x 100

DTC DETECTION CONDITION CHART

MONITOR STRATEGY CHART

The following conditions are common to ON malfunctions (A), (B), (C) and (D).

TYPICAL ENABLING CONDITIONS CHART

ON malfunction (A)

TYPICAL ENABLING CONDITIONS CHART - ON MALFUNCTION (A)

ON malfunction (B)

TYPICAL ENABLING CONDITIONS CHART - ON MALFUNCTION (B)

ON malfunction (C)

TYPICAL ENABLING CONDITIONS CHART - ON MALFUNCTION (C)

ON malfunction (D)

TYPICAL ENABLING CONDITIONS CHART - ON MALFUNCTION (D)

[ON malfunction]

Detection condition: Total accumulated time of ON malfunctions (A), (B), (C) and (D) is 1 second or more

ON malfunction (A)

TYPICAL MALFUNCTION THRESHOLDS CHART - ON MALFUNCTION (A)

ON malfunction (B)

TYPICAL MALFUNCTION THRESHOLDS CHART - ON MALFUNCTION (B)

ON malfunction (C)

TYPICAL MALFUNCTION THRESHOLDS CHART - ON MALFUNCTION (C)

ON malfunction (D)

TYPICAL MALFUNCTION THRESHOLDS CHART - ON MALFUNCTION (D)

Scheme 525

MONITOR STRATEGY CHART

TYPICAL ENABLING CONDITIONS CHART

TYPICAL MALFUNCTION THRESHOLDS CHART

COMPONENT OPERATING RANGE CHART

MONITOR STRATEGY CHART

P2769: Range check (Low resistance)

P2769: RANGE CHECK (LOW RESISTANCE)

P2770: Range check (High resistance)

P2770: RANGE CHECK (HIGH RESISTANCE)

P2769: Range check (Low resistance)

P2769: RANGE CHECK (LOW RESISTANCE)

P2770: Range check (High resistance)

P2770: RANGE CHECK (HIGH RESISTANCE)

COMPONENT OPERATING RANGE CHART