Scheme 1
DIAGNOSIS FUNCTION
- Connect the Hi Scan Pro to the connector for diagnosis.
- Read the output diagnostic trouble codes. Then follow the remedy procedures according to the " «DIAGNOSTIC TROUBLE CODE DESCRIPTION»(/hyundai/santa-fe/i-2000-2012/remont/automatic-trans/#automatic-transaxle-system__diagnostic-trouble-code-description) " . NOTE: A maximum of 8 diagnostic trouble codes (in the sequence of occurrence) can be stored in the Random Access Memory (RAM) incorporated within the control module The same diagnostic trouble code can be stored one time only. If the number of stored diagnostic trouble codes or diagnostic trouble patterns exceeds 8, already stored diagnostic trouble codes will be erased in sequence, beginning with the oldest. Do not disconnect the battery until all diagnostic trouble codes or diagnostic trouble patterns have been read out, because all stored diagnostic trouble codes or diagnostic trouble patterns will be cancelled when the battery is disconnected.
- If the fail-safe system is activated and the transaxle is locked in third gear, the diagnostic trouble code in the fail-safe code description will be stored in the RAM. Three of these diagnostic trouble codes can be stored.
- The cancellation will occur if, with the transaxle locked in third gear, the ignition key is turned to the OFF position, but the diagnostic trouble code is stored in the RAM.
- Memorization Up to 8 diagnosis items and 3 fail-safe items can be memorized. If the memory capacity is exceeded, diagnosis and fail-safe items in the memory are overwritten, starting with the oldest. No code can be memorized more than once.
- Diagnosis Code Deletion Automatic Deletion. All diagnosis codes are deleted from memory the 200th time the ATF temperature reaches 50°C after memorization of the most recent diagnosis code. Forced Deletion. Memorized diagnosis codes can be deleted using the scan-tool, provided the following conditions are satisfied: The ignition switch is ON. There is no detection pulse from the crank angle sensor. There is no detection pulse from the output shaft speed sensor. There is no detection pulse from the vehicle speed sensor. The fail-safe function is not operational.
ROAD TEST
| No. | Condition | Operation | Judgment value | Check item |
|---|---|---|---|---|
| 1 | Ignition switch: OFF | Ignition switch (1) ON | Battery voltage (mV) | Control relay |
| 2 | Ignition switch: ON Engine: Stopped Selector lever position: P | Selector lever position (1) P, (2) R, (3) N, (4) D | (1) P, (2) R, (3) N, (4) D | Transaxle range switch |
| Accelerator pedal Released Half depressed Depressed | 400 ~ 1,000 mV Gradually rises from (1) 4,500 ~ 5,000 mV | Throttle position sensor | ||
| Brake pedal Depressed Released | ON OFF | Stop lamp switch | ||
| 3 | Ignition switch: ST Engine: Stopped | Starting test with lever P or N range | Starting should be possible | Starting possible or impossible |
| 4 | Warming up | Drive for 15 minutes or more so that the automatic fluid temperature becomes 70~90°C | Gradually rises to 70~90°C | Oil temperature sensor |
| 5 | Engine: Idling Selector lever position | A/C switch ON OFF | ON OFF | Triple pressure switch |
| Accelerator pedal Released Half depressed | ON OFF | Idle position switch | ||
| 600~925 RPM Gradually rises from (1) | ||||
| Data changes | Communication with engine-ECU | |||
| Selector lever position N -->D N -->R | Should be no abnormal shifting shocks Time lag should be within 2 seconds | Malfunction when starting | ||
| 6 | Selector lever position: N (Carry out on a flat and straight road) | Selector lever position and vehicle speed Idling in 1st gear (Vehicle stopped) Driving at constant speed of 20 km/h in 1st gear Driving at constant speed of 30 km/h in 2nd gear Driving at 50 km/h in 3rd gear with accelerator fully closed Driving at constant speed of 50 km/h in 4th gear (Each condition should be maintained for 10 seconds or more) | (2) 1st, (4) 3rd, (3) 2nd, (5) 4th | Shift condition |
| (2) 0%, (4) 100%, (3) 100%, (5) 100% | Low and reverse solenoid valve | |||
| (2) 0%, (4) 0%, (3) 0% (5) 100% | Underdrive solenoid valve | |||
| (2) 100%, (4) 100%, (3) 0% (5) 0% | Second solenoid valve | |||
| (2) 100%, (4) 0%, (3) 100%, (5) 0% | Overdrive solenoid valve | |||
| (1) 0 km/h (4) 50 km/h | Vehicle speed sensor | |||
| (4) 1,800 ~ 2,100 RPM | Input shaft speed sensor | |||
| (4) 1,800 ~ 2,100 RPM | Output shaft speed sensor | |||
| (3) 0% (5) Approx. 70~90% | Damper clutch control solenoid valve | |||
| (3) Approx. 100~300 RPM (5) Approx. 0~10 RPM | ||||
| 7 | Selector lever position: D (Carry out on a flat and straight road) | Accelerate to 4th gear at a throttle position sensor output of 1.5V (accelerator opening angle of 30 %). Gently decelerate to a standstill. Accelerate to 4th gear at a throttle position sensor output of 2.5 V (accelerator opening angle of 50%). While driving at 60 km/h in 4th gear, shift down to 3rd gear. While driving at 40 km/h in 3rd gear, shift down to 2nd gear. While driving at 20 km/h in 2nd gear, shift down to 1st gear. | For (1), (2) and (3), the reading should be the same as the specified output shaft torque, and no abnormal shocks should occur. For (4), (5) and (6), downshifting should occur immediately after the shifting operation is made. | Malfunction when shifting |
| Displaced shift points | ||||
| Does not shift | ||||
| Does not shift from 1 to 2 or 2 to 1 | ||||
| Does not shift from 2 to 3 or 3 to 2 | ||||
| Does not shift from 3 to 4 or 4 to 3 | ||||
| 8 | Selector lever position: N (Carry out on a flat and straight road) | Move selector lever to R range drive at constant speed of 10 km/h | The ratio between input and output shaft speed sensor data should be the same as the gear ratio when reversing. | Does not shift |
ROAD TEST CHART
DIAGNOSTIC TROUBLE CODE DESCRIPTION
| DTC No. | Diagnosis item | Detecting condition | |
|---|---|---|---|
| P0713 | Fluid temperature sensor | Open circuit | Oil temperature sensor output > 4.57 V for 1 second or longer (oil temperature does not increase) |
| P0712 | Short circuit | Output < 0.49V for 1 second | |
| P0711 | Rationality check | ||
| P0715 | Input speed sensor | Short circuit/open circuit | No input speed sensor output pulse detected for > 1 second at vehicle speed of > 30 km/h |
| P0720 | Output speed sensor | Short circuit/open circuit | At vehicle speed of > km/h, output speed sensor output < 50% of vehicle speed sensor output for > 1 second At vehicle speed of 6 km/h, stop lamp switch is ON continuously for 5 minutes. |
| P0703 | Stop lamp switch | Short circuit/open circuit | With relay voltage > 10V, open or short circuit is continuously for 5 minutes. |
| P0750 | LR solenoid valve | Short circuit/open circuit | With relay voltage > 10V, open or short circuit is continuously for 0.3 second. |
| P0755 | UD solenoid valve | Short circuit/open circuit | |
| P0760 | 2nd solenoid valve | Short circuit/open circuit | |
| P0765 | UD solenoid valve | Short circuit/open circuit | |
| P0770 | RED solenoid valve | Short circuit/open circuit | |
| P0731 | Gear shift incomplete | 1st | After gear shift, output shaft speed sensor output x gear ratio of new gear not equal to input shaft speed sensor output. |
| P0732 | 2nd | ||
| P0733 | 3rd | ||
| P0734 | 4th | ||
| P0735 | 5th | ||
| P0736 | Reverse | ||
| P0741 | TCC solenoid valve | Stuck OFF | DCC solenoid valve drive duty ratio is 100% for 4 seconds continuously. |
| P0742 | Stuck ON | ||
| P0743 | Open or ground short | ||
| P0885 | A/T control relay | Ground short circuit/open circuit | After ignition ON, A/T control relay voltage < 7V. |
| P0707 | Transaxle range switch | Open circuit | No signal is continuous for > 30 seconds. |
| P0708 | Short circuit | Above 2 kinds signals are continuous for 30 seconds. | |
| U0001 | CAN-BUS OFF | TCU Fail/open/short | Receive BUS-OFF information from CAN CONTROLLER. |
| U0100 | CAN-TIME OUT ECU | ECU Fail/open/short | No output signal for 1.5 second. |
| P0500 | Vehicle speed sensor | Plansibility (2.4L/3.5L) | Vehicle speed = 0 with high engine speed and engine load |
| P1500 | Plansibility (2.7L) | ||
| P0560 | BACK-UP LINE | Power circuit | Back-up line greater than or equal to 7V |
| P0605 | EEPROM | Communication | Communication error |
DIAGNOSTIC TROUBLE CODE DESCRIPTION CHART
INSPECTION CHART FOR DIAGNOSIS CODES
| Code | Diagnosis item | Possible cause | |
|---|---|---|---|
| P0711 | Fluid temperature sensor system If the fluid temperature sensor output voltage is 4.57V or more even after driving for 10 minutes or more (if the fluid temperature does not increase), it is judged that there is an open circuit in the fluid temperature sensor and diagnosis code P0713 is output. | Rationality check | Malfunction of the oil temperature sensor Malfunction of connector Malfunction of the TCM |
| P0712 | Short circuit | ||
| P0713 | Open circuit | ||
| P0715 | Input speed sensor system If no output pulse is detected from the input shaft speed (PG-A) sensor for 1 second or more while driving in 3rd or 4th gear at a speed of 30 km/h or more, it is judged to be an open or short circuit. In the input shaft speed sensor and diagnosis code P0715 is output. If diagnosis code P0715 is output four times, the transmission is locked into 3rd gear (D range) or 2nd gear as a fail-safe measure. | Short circuit/open circuit | Malfunction of the input shaft speed sensor Malfunction of the underdrive clutch retainer Malfunction of connector Malfunction of the TCM |
| P0720 | Output speed sensor system If the output from the output shaft speed sensor (PG-B) is continuously 50% lower than the vehicle speed for 1 second or more while driving in 3rd or 4th gear at a speed of 30 km/h or more, it is judged to be an open or short circuit in the output shaft speed sensor and diagnosis code P0720 is output. If diagnosis code P0720 is output four times, the transmission is locked into 3rd gear (D range) or 2nd gear as a fail-safe measure. | Short circuit/open circuit | Malfunction of the wide open throttle switch Malfunction of connector Malfunction of the TCM Malfunction of solenoid valve |
| P0703 | Stop lamp switch system If the stop lamp switch is on for 5 minutes or more while driving, it is judged that there is a short circuit in the stop lamp switch and diagnosis code P0703 is the output. | Short circuit/open circuit | Malfunction of the stop lamp switch Malfunction of connector Malfunction of the TCM |
| P0750 P0755 P0760 P0765 P0770 | Low and reverse solenoid valve system Underdrive solenoid valve system Second solenoid valve system Overdrive solenoid valve system Reduction solenoid valve system If the resistance value for a solenoid valve is too large or too small, it is judged that there is a short or open circuit in the solenoid valve and the respective diagnosis code is output. The transmission is locked into 3rd gear as a fail-safe measure. | Short circuit/Open circuit | Malfunction of solenoid valve Malfunction of connector Malfunction of the TCM |
| P0741 | Torque converter clutch solenoid valve system If the resistance value for a solenoid valve is too large or too small, it is judged that there is a short or open circuit in the solenoid valve and the respective diagnosis code is output. The transmission is locked into 3rd gear as a fail-safe measure. | Short circuit/Open circuit Defective system | Malfunction of solenoid valve Malfunction of connector Malfunction of the TCM |
| P0742 | |||
| P0743 | |||
| P0731 | 1st gear ratio does not meet the specification If the output from the output shaft speed sensor (PG-B) multiplied by the 1st gear ratio is not the same as the output from the input shaft speed sensor (PG-A) after shifting to 1st gear has been completed, diagnosis code P0731 is output. If diagnosis code P0731 is output four times, the transmission is locked into 3rd gear as a fail-safe measure. | Malfunction of the input shaft (PG-A) speed sensor Malfunction of the output shaft (PG-B) speed sensor Malfunction of the underdrive clutch retainer Malfunction of the transfer drive gear or driven gear Malfunction of the low ad reverse brake system Malfunction of the underdrive clutch system Noise generated | |
| P0732 | 2nd gear ratio does not meet the specification If the output from the output shaft speed sensor multiplied by the 3rd gear ratio is not the same as the output from the input shaft speed sensor after shifting to 3rd gear has been completed, diagnosis code P0732 is output. If diagnosis code P0732 is the output four times, the transmission is locked into 3rd gear as a fail-safe measure. | Malfunction of the input shaft speed sensor Malfunction of the output shaft speed sensor Malfunction of the underdrive clutch retainer Malfunction of the transfer drive gear or driven gear Malfunction of the underdrive clutch system Malfunction of the overdrive clutch system Noise generated | |
| P0733 | 3rd gear ratio does not meet the specification If the output from the output shaft speed sensor multiplied by the 3rd gear ratio is not the same as the output from the input shaft speed sensor after shifting to 3rd gear has been completed, diagnosis code P0733 is output. If diagnosis code P0733 is the output four times, the transmission is locked into 3rd gear as a fail-safe measure. | Malfunction of the input shaft speed sensor Malfunction of the output shaft speed sensor Malfunction of the underdrive clutch retainer malfunction of the transfer drive gear or driven gear malfunction of the second brake system Malfunction of the overdrive clutch system Noise generated | |
| P0734 | 4th gear ratio does not meet the specification If the output from the output shaft speed sensor multiplied by the 4th gear ratio is not the same as the output from the input shaft speed sensor after shifting to 4th gear has been completed, diagnosis code P0734 is output. If diagnosis code P0734 is the output four times, the transmission is locked into 3rd gear as a fail-safe measure. | Malfunction of the input shaft speed sensor Malfunction of the output shaft speed sensor Malfunction of the underdrive clutch retainer Malfunction of the transfer drive gear or driven gear Malfunction of the low and reverse brake system Malfunction of the reverse clutch system Noise generated | |
| P0735 | 5th gear ratio does not meet the specification If the output from the output shaft speed sensor multiplied by the 5th gear ratio is not the same as the output from the input shaft speed sensor after shifting to 5th gear has been completed, diagnosis code P0735 is output. If diagnosis code P0735 is the output four times, the transmission is locked into 3rd gear as a fail-safe measure. | Malfunction of the input shaft speed sensor Malfunction of the output shaft speed sensor Malfunction of the underdrive clutch retainer Malfunction of the transfer drive gear or driven gear Malfunction of the 2nd brake system Malfunction of the overdrive clutch system Malfunction of the direct clutch Noise generated | |
| P0736 | Reverse gear ratio does not meet the specification If the output from the output shaft speed sensor multiplied by the reverse gear ratio is not the same as the output from the input shaft speed sensor after shifting to reverse gear has been completed, diagnosis code P0736 is output. If diagnosis code P0736 is the output four times, the transmission is locked into 3rd gear as a fail-safe measure. | Malfunction of the input shaft speed sensor Malfunction of the output shaft speed sensor Malfunction of the underdrive clutch retainer Malfunction of the transfer drive gear or driven gear Malfunction of the low and reverse brake system Malfunction of the reverse brake system Malfunction of the reverse clutch system Noise generated | |
| P0885 | A/T control relay system If the A/T control relay voltage is less than 7V after the ignition switch has been turned ON, it is judged that there is an open or a short circuit in the A/T control relay ground and diagnosis code P0885 is output. Then the transmission is locked into 3rd gar as a fail-safe measure. | Short circuit to ground/Open circuit | Malfunction of the A/T control relay Malfunction of connector Malfunction of the TCM |
| P0707 | Transaxle range switch | Open circuit | No signal is continuous for > 30 seconds |
| P0708 | Short circuit | Above 2 kinds signals are continuous for 30 seconds | |
| U0001 | CAN-BUS OFF No 3rd gear hold No PGA, B Battery voltage > 10V continuously for 0.5 second No engine stop Receive BUS OFF information from CAN CONTROLLER | TCM fail TCM side open & short | |
| U0100 | CAN-TIME OUT ECM No 3rd gear hold No PGA, B Battery voltage > 10V continuously for 0.5 second No engine stop No output signal for 1.5 second | ECM fail ECM side open & short | |
| P0560 | Back-up line for power Ne (Engine RPM) is normal Ne greater than or equal to 400 RPM Vb (Back up-line) greater than or equal to 9V | Faulty TCM Fault in harness | |
| P0605 | EEPROM Abnormal Communication error with 'EEPROM' | Faulty TCM | |
| P0500 | Vehicle speed sensor - OPEN or SHORT (GND) Engine speed > 2100 RPM Engine load > 250 mg/rev Coolant temperature > 60°C (140°F) 10V < Battery voltage < 16V No fuel shut-off | Open or short in harness Contact resistance in connectors Faulty wheel speed sensor | |
| P1500 | |||
DIAGNOSIS CODES INSPECTION CHART
INSPECTION CHART FOR TROUBLE SYMPTOMS
| Trouble symptom | Probable cause | |
|---|---|---|
| Communication with HI-SCAN is not possible, If communication with the HI-SCAN is not possible, the cause is probably a defective diagnosis line or the TCM is not functioning. | Malfunction diagnosis line Malfunction of connector Malfunction of the TCM | |
| Driving impossible | Starting impossible Starting is not possible when the selector lever is in P or N range. In such cases, the cause is probably a defective engine system, torque converter or oil pump. | Malfunction of the engine system Malfunction of the torque converter Malfunction of the oil pump |
| Does not move forward If the vehicle does not move forward when the selector lever is shifted from N to D, 3, 2 or L range while the engine is idling, the cause is probably abnormal line pressure or a malfunction of the underdrive clutch or valve body. | Abnormal line pressure Malfunction of the underdrive solenoid valve Malfunction of the underdrive clutch Malfunction of the valve body | |
| Does not reverse If the vehicle does not reverse when the selector lever is shifted from N to R range while the engine is idling, the cause is probably abnormal pressure in the reverse clutch or low and reverse brake or a malfunction of the reverse clutch, low and reverse brake or valve body. | Abnormal reverse clutch pressure Abnormal low and reverse brake pressure Malfunction of the low and reverse brake solenoid valve Malfunction of the reverse clutch Malfunction of the low and reverse brake Malfunction of the valve body | |
| Does not move (forward or reverse) If the vehicle does not move forward or reverse when the selector lever is shifted to any position while the engine is idling, the cause is probably abnormal line pressure or a malfunction of the power train, oil pump or valve body. | Abnormal line pressure Malfunction of power train Malfunction of the oil pump Malfunction of the valve body | |
| Malfunction when starting | Engine stalling when shifting If the engine stalls when the selector lever is shifted from N to D or R range while the engine is idling, the cause is probably a malfunction of the engine system, damper clutch solenoid valve, valve body or torque converter (damper clutch malfunction). | Malfunction of the engine system Malfunction of the damper clutch control solenoid valve Malfunction of the valve body Malfunction of the torque converter (Malfunction of the damper clutch) |
| Shocks when changing from N to D and large time lag If abnormal shocks or a time lag of 2 seconds or more occur when the selector lever is shifted from N to D range while the engine is idling, the cause is probably abnormal underdrive clutch pressure or a malfunction of the underdrive clutch, valve body or idle position switch. | Abnormal underdrive clutch pressure Abnormal low and reverse brake pressure Malfunction of the underdrive solenoid valve Malfunction of the valve body Malfunction of the idle position switch | |
| Malfunction when starting | Shocks when changing from N to R and large time lag If abnormal shocks or a time lag of 2 seconds or more occur when the selector lever is shifted from N to R range while the engine is idling, the cause is probably abnormal reverse clutch pressure or low and reverse brake pressure, or a malfunction of the reverse clutch, low and reverse brake, valve body or idle position switch. | Abnormal reverse clutch pressure Abnormal low and reverse brake pressure Malfunction of the low and reverse solenoid valve Malfunction of the reverse clutch Malfunction of the low and reverse brake Malfunction of the valve body Malfunction of the idle position switch |
| Shocks when changing from N to D, N to R and large time lag If abnormal shocks or a time lag of 2 seconds or more occur when the selector lever is shifted from N to D range and from N to R range while the engine is idling, the cause is probably abnormal line pressure or a malfunction of the oil pump or valve body. | Abnormal line pressure Malfunction of the oil pump Malfunction of the valve body | |
| Malfunction when shifting | Shocks and running up If shocks occur when driving due to up shifting or down shifting and the transmission speed becomes higher than the engine speed, the cause is probably abnormal line pressure or a malfunction of a solenoid valve, oil pump, valve body or of a brake or clutch. | Abnormal line pressure Malfunction of each solenoid valve Malfunction of the oil pump Malfunction of the valve body Malfunction of each brake or each clutch |
| Displaced shifting points | All points If all shift points are displaced while driving, the cause is probably a malfunction of the output shaft speed sensor, TPS or of a solenoid valve. | Malfunction of the output shaft speed sensor Malfunction of the throttle position sensor Malfunction of each solenoid valve Abnormal line pressure Malfunction of the valve body Malfunction of the TCM |
| Some points If some of the shift points are displaced while driving, the cause is probably a malfunction of the valve body, or it is related to control and is not an abnormality. | Malfunction of the valve body | |
| Does not shift | No diagnosis codes If shifting does not occur while driving and no diagnosis codes are output, the cause is probably a malfunction of the transaxle range switch, or TCM | Malfunction of the transaxle range Malfunction of the TCM |
| Malfunction while driving | Poor a acceleration If acceleration is poor even if down shifting occurs while driving, the cause is probably a malfunction of the engine system or of a brake or clutch. | Malfunction of the engine system Malfunction of the brake of clutch |
| Vibration If vibration occurs when driving at constant speed or when accelerating and deceleration in top range, the cause is probably abnormal damper clutch pressure or a malfunction of the engine system, damper clutch control solenoid valve, torque converter or valve body. | Abnormal damper clutch pressure Malfunction of the engine system Malfunction of the damper clutch control solenoid valve Malfunction of the torque converter Malfunction of the valve body | |
| Transaxle range switch system The cause is probably a malfunction of the inhibitor switch circuit, ignition switch circuit or a defective TCM. | Malfunction of the transaxle range switch Malfunction of the ignition switch Malfunction of connector Malfunction of the TCM | |
| Idle position switch system The cause is probably a defective idle position switch circuit, or a defective TCM. | Malfunction of the triple pressure switch Malfunction of connector Malfunction of the TCM | |
| Triple pressure switch system The cause is probably a defective dual pressure switch circuit or a defective TCM. | Malfunction of the triple pressure switch Malfunction of connector Malfunction of A/C system Malfunction of the TCM | |
| Vehicle speed sensor system The cause is probably a defective vehicle speed sensor circuit or a defective TCM. | Malfunction of the vehicle speed sensor Malfunction of connector Malfunction of the TCM | |
TROUBLE SYMPTOMS INSPECTION CHART
ELEMENTS IN USE IN EACH GEAR
| Operating element | Underdrive clutch (UD) | Reverse clutch (REV) | Overdrive clutch (OD) | Low-and reverse brake (LR) | Second brake (2nd) | One way clutch (OWC) | |
|---|---|---|---|---|---|---|---|
| Selector lever position | |||||||
| P | Parking | X | |||||
| R | Reverse | X | X | ||||
| N | Neutral | X | |||||
| D | 1st | X | X | X | |||
| 2nd | X | X | |||||
| 3rd | X | X | |||||
| 4th | X | X | |||||
| 3 | 1st | X | X | X | |||
| 2nd | X | X | |||||
| 3rd | X | X | |||||
| 2 | 1st | X | X | ||||
| 2nd | X | X | |||||
| L | 1st | X | X | X | |||
GEAR ELEMENTS IN USE CHART
OPERATING ELEMENTS AND THEIR FUNCTION
| Operating element | Code | Function |
|---|---|---|
| Underdrive clutch | UD | Connects input shaft and underdrive sun gear |
| Reverse clutch | REV | Connects input shaft and reverse sun gear |
| Overdrive clutch | OD | Connects input shaft and overdrive planetary carrier |
| Low-and-reverse brake | LR | Locks low-and-reverse annulus gear and overdrive planetary carrier |
| Second brake | 2ND | Locks reverse sun gear |
OPERATING ELEMENTS AND FUNCTION CHART
BASIC INSPECTION ADJUSTMENT
- Drive the vehicle until the fluid temperature rises to the normal temperature (70~80°C).
- Park the vehicle on a level surface.
- Move the selector lever through all positions to fill the torque converter and the hydraulic circuits with fluid, and then move the selector lever to the N position.
- After wiping off any dirt around the oil level gauge, reinsert and remove the oil level gauge and check the condition of the fluid. NOTE: If the fluid smells as if it is burning, it means that the fluid has been contaminated by fine particles from the bushes and friction materials, a transaxle overhaul may be necessary.
- Check that the fluid level is at the HOT mark on the oil level gauge. If the fluid level is lower than this, add more fluid until the level reaches the HOT mark. Automatic transaxle fluid: DIAMOND ATF SP-III., SK ATF SP-III. NOTE: If the fluid level is low, the oil pump will draw in air along with the fluid, which will cause bubbles to form inside the hydraulic circuit. This will in turn cause the hydraulic pressure to drop, which will result in late shifting and slipping of the clutches and brakes. If there is too much fluid, the gears can churn it up into foam and cause the same conditions that can occur with low fluid levels. In either case, air bubbles can cause overheating and oxidation of the fluid which can interfere with normal valve, clutch, and brake operation. Foaming can also result in fluid escaping from the transaxle vent, in which case it may be mistaken for a leak.
- Insert the oil level gauge securely.
- The fluid and the oil filters should always be replaced when overhauling the transaxle or after the vehicle has been driven under severe conditions. The replacement procedures are given below. Furthermore, the oil filters are special filters which are only to be used for the automatic transaxle. NOTE: When new, automatic transmission fluid should be red. The red dye is added so distinguish it from engine oil or antifreeze. As the vehicle is driven the transmission fluid will begin to look darker. The color may eventually appear light brown. Also, the dye, which is not an indicator of fluid quality, is not permanent. Therefore, further investigation of the automatic transaxle is required if, The fluid is dark brown or black. The fluid smells burnt. Metal particles can be seen or felt on the dipstick.
REPLACEMENT
If you have a fluid changer, use this changer to replace the fluid. If you do not have a fluid changer, replace the fluid using following procedure.
Scheme 2
Scheme 3
- Remove the drain plug from the bottom of the transaxle case to drain the fluid
- Install the drain plug and gasket, and tighten to the specified torque Tightening torque: 32 Nm (320 kg.cm, 23 lb.ft)
- Pour the new fluid in through the oil filler tube CAUTION: Stop pouring if the full volume of fluid cannot be poured in.
- Repeat the procedure in step 1 if too much fluid was added.
- Reconnect the hose that was disconnected in step 1 , and firmly replace the oil level gauge.
- Start the engine and run it at idle for 1-2 minutes.
- Move the select lever through all positions, and then move it to the N position.
- Drive the vehicle until the fluid temperature rises to the normal temperature (70~80°C), and then check the fluid level again. The fluid level must be at the HOT Mark.
- Firmly insert the oil level gauge into the oil filler tube.
Scheme 4
Scheme 5
Scheme 6
Scheme 7
Scheme 8
- Set the selector lever to the "N" position.
- Loosen the control cable to the manual control lever coupling nut to free the cable and lever.
- Set the manual control lever to the neutral position.
- Loosen the transaxle range switch body mounting bolts and then turn the transaxle range switch body so the hole in the end of the manual control lever and the hole (cross section A-A in (Scheme 7) ) in the flange of the transaxle range switch body flange are aligned.
- Tighten the transaxle range switch body mounting bolts to the specified torque. Be careful at this time that the position of the switch body does not change.
- Gently pull the transaxle control cable in the direction of the arrow, then tighten the adjusting nut.
- Check that the selector lever is in the "N" position.
- Check that each range on the transaxle side operates and functions correctly for each position of the selector lever.
Scheme 9
Scheme 10
Scheme 11
Scheme 12
Scheme 13
Scheme 14
- THROTTLE POSITION SENSOR CHECK The TPS is a variable resistor type that rotates with the throttle body shaft to sense the throttle valve angle. As the throttle shaft rotates, the output voltage of the TPS changes. The ECM detects the throttle valve opening based on voltage change. (Refer to applicable FUEL SYSTEM article ).
- OIL TEMPERATURE SENSOR CHECK Remove the oil temperature sensor. Measure the resistance between terminals 1 and 2 of the oil temperature sensor connector. STANDARD VALUE OIL TEMPERATURE SENSOR STANDARD VALUES Oil temperature (°C) Resistance (Kohms) 0 16.7 ~ 20.5 100 0.57 ~ 0.69
- VEHICLE SPEED SENSOR CHECK Remove the vehicle speed sensor and connect a 3~10 Kohms resistance (Scheme 10) Turn the shaft of the vehicle speed sensor and check that there is voltage between terminals 2-3 (1 turn = 4 pulses).
- A/T CONTROL RELAY CHECK Remove the A/T control relay. Use jumper wires to connect A/T control relay terminal 2 to the battery (+) terminal and terminal 4 to the battery (-) terminal. Check the continuity between terminal 1 and terminal 3 of the A/T control relay when the jumper wires are connected and disconnected from the battery. A/T CONTROL RELAY CONTINUITY CHART Jumper wire Continuity between terminal No. 1 Connected Continuity Disconnected No continuity If there is a problem, replace the A/T control relay.
- SOLENOID VALVE CHECK Remove the valve body cover. Disconnect the connectors of each solenoid valve. Measure the resistance between terminals 1 and 2 of each solenoid valve. STANDARD VALUE SOLENOID VALVE RESISTANCE CHART Name Resistance Damper clutch solenoid valve 2.7 ~ 3.4ohms (at 20°C) Low and reverse solenoid valve Second solenoid valve Underdrive solenoid valve Overdrive solenoid valve If the resistance is outside the standard value, replace the solenoid valve. NOTE: Resistance of the solenoid valve connector. SOLENOID VALVE CONNECTOR RESISTANCE CHART Terminal No. Name Resistance 7 & 10 Damper clutch solenoid valve 2.7 ~ 3.4ohms (at 20°C) 10 & 6 Low and reverse solenoid valve 9 & 4 Second solenoid valve 9 & 3 Underdrive solenoid valve 9 & 5 Overdrive solenoid valve
TORQUE CONVERTER STALL TEST
This test measures the maximum engine speed when the selector lever is in the D or R position. The torque converter stalls to test the operation of the torque converter, starter motor, one-way clutch operation, the holding performance of the clutches, and brakes in the transaxle.
| CAUTION | Do not let anybody stand in front of or behind the vehicle while this test is being carried out |
- Check the automatic transaxle fluid level and temperature, and the engine coolant temperature. Fluid level: At the HOT mark on the oil level gauge Fluid temperature: 80~100°C Engine coolant temperature: 80~100°C
- Chock both rear wheels (left and right).
- Apply the parking brake lever with the brake pedal fully depressed.
- Start the engine.
- Move the selector lever to the D position, fully depress the accelerator pedal and take a reading of the maximum engine speed at this time. CAUTION: The throttle should not be left fully open for more than eight seconds. If carrying out the stall test two or more times, move the selector lever to the N position and run the engine at 1,000 RPM to let the automatic transaxle fluid cool down before carrying out subsequent tests. Standard value stall speed: 2,100 ~ 2,900 RPM Move the selector lever to the R position and carry out the same test again. Standard value stall speed: 2,100 ~ 2,900 RPM
Scheme 15
- Stall speed is too high in both D and R ranges Low line pressure Low & reverse brake slippage
- Stall speed is too high in D range only Underdrive clutch slippage
- Stall speed is too high in R range only Reverse clutch slippage
- Stall speed too low in both D and R ranges Malfunction of torque converter Insufficient engine output
Scheme 16
Scheme 17
Scheme 18
Scheme 19
- Warm up the engine until the automatic transaxle fluid temperature is 80-100°C.
- Jack up the vehicle so that the wheels are free to turn.
- Connect the special tool (oil pressure gauge) to each pressure discharge port.
- Measure the hydraulic pressure at each port under the conditions given in «STANDARD HYDRAULIC PRESSURE (4A/T) CHART»(/hyundai/santa-fe/i-2000-2012/remont/automatic-trans/#automatic-transaxle-system) , and check that the measured values are within the standard value ranges.
- If a value is outside the standard range, correct the problem while referring to «HYDRAULIC PRESSURE TEST DIAGNOSIS»(/hyundai/santa-fe/i-2000-2012/remont/automatic-trans/#automatic-transaxle-system__hydraulic-pressure-test-diagnosis) .
STANDARD HYDRAULIC PRESSURE TEST (4A/T)
| Measurement condition | Standard hydraulic pressure kPa (psi) | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Selector lever position | Shift position | Engine speed (RPM) | Under-drive clutch pressure (UD) | Reverse clutch pressure (REV) | Overdrive clutch pressure (OD) | Low and reverse brake pressure (LR) | 2nd brake pressure (2ND) | DC apply pressure (DA) | DC release pressure (DR) |
| P | 2,500 | 260 ~ 340 (38 ~ 49) | 220 ~ 360 (32 ~ 52) | ||||||
| R | Reverse | 2,500 | 1,270 ~ 1,770 (185 ~ 256) | 1,270 ~ 1,770 (185 ~ 256) | 500 ~ 700 (73 ~ 101) | ||||
| N | Neutral | 2,500 | 260 ~ 340 (38 ~ 49) | 220 ~ 360 (32 ~ 52) | |||||
| D | 1st gear | 2,500 | 1,010 ~ 1,050 (146 ~ 152) | 1,010 ~ 1,050 (146 ~ 152) | 500 ~ 700 (73 ~ 101) | ||||
| 2nd gear | 2,500 | 1,010 ~ 1,050 (146 ~ 152) | 1,010 ~ 1,050 (146 ~ 152) | 500 ~ 700 (73 ~ 101) | |||||
| 3rd gear | 2,500 | 780 ~ 880 (113 ~ 128) | 780 ~ 880 (113 ~ 128) | More than 750 (108) | 450 ~ 650 (65 ~ 94) | ||||
| 4th gear | 2,500 | 780 ~ 880 (113 ~ 128) | 780 ~ 880 (113 ~ 128) | More than 750 (108) | 450 ~ 650 (65 ~ 94) | ||||
STANDARD HYDRAULIC PRESSURE (4A/T) CHART
STANDARD HYDRAULIC PRESSURE TEST (5A/T)
| Measurement condition | Standard hydraulic pressure kPa/(psi) | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Selector lever position | Shift position | Engine speed (RPM) | Under drive clutch pressure (UD) | Reverse clutch pressure (REV) | Overdrive clutch pressure (OD) | Low and reverse brake pressure (LR) | Second brake pressure (2ND) | Direct clutch pressure | Damper clutch release pressure (DR) | Reduction brake pressure |
| P | 2,500 | 260 ~ 340 (38 ~ 49) | 220 ~ 360 (31 ~ 52) | 260 ~ 340 (38 ~ 49) | ||||||
| R | Reverse | 2,500 | 1,270 ~ 1,770 (185 ~ 256) | 1,270 ~ 1,770 (185 ~ 256) | 500 ~ 700 (73 ~ 101) | 1,270 ~ 1,770 (185 ~ 256) | ||||
| N | Neutral | 260 ~ 340 (38 ~ 49) | 220 ~ 360 (31 ~ 52) | 260 ~ 340 (38 ~ 49) | ||||||
| D | 1st gear | 2,500 | 1,010 ~ 1,050 (147 ~ 152) | 1,010 ~ 1,050 (147 ~ 152) | 500 ~ 700 (73 ~ 101) | 1,010 ~ 1,050 (147 ~ 152) | ||||
| 2nd gear | 2,500 | 1,010 ~ 1,050 (147 ~ 152) | 1,010 ~ 1,050 (147 ~ 152) | 500 ~ 700 (73 ~ 101) | 1,010 ~ 1,050 (147 ~ 152) | |||||
| 3rd gear | 2,500 | 780 ~ 880 (113 ~ 128) | 780 ~ 880 (113 ~ 128) | 450 ~ 650 (65 ~ 94) | 780 ~ 880 (113 ~ 128) | |||||
| 4th gear | 2,500 | 780 ~ 880 (113 ~ 128) | 780 ~ 880 (113 ~ 128) | 780 ~ 880 (113 ~ 128) | 450 ~ 650 (65 ~ 94) | |||||
| 5th gear | 2,500 | 780 ~ 880 (113 ~ 128) | 780 ~ 880 (113 ~ 128) | 780 ~ 880 (113 ~ 128) | 450 ~ 650 (65 ~ 94) | |||||
STANDARD HYDRAULIC PRESSURE (5A/T) CHART
Scheme 20
Scheme 21
HYDRAULIC PRESSURE TEST DIAGNOSIS
| Trouble symptom | Probable cause |
|---|---|
| All hydraulic pressures are high | Incorrect transmission control cable adjustment |
| Malfunction of the regulator valve | |
| All hydraulic pressures are low | Incorrect transmission control cable adjustment |
| Malfunction of the oil pump | |
| Clogged oil filter | |
| Clogged oil cooler | |
| Malfunction of the regulator valve | |
| Malfunction of the relief valve | |
| Incorrect valve body installation | |
| Hydraulic pressure is abnormal in "R" range only | Malfunction of the regulator valve |
| Clogged orifice | |
| Incorrect valve body installation | |
| Hydraulic pressure is abnormal in "3" or "4" range only | Malfunction of the regulator valve |
| Clogged orifice | |
| Incorrect valve body installation | |
| Malfunction of the overdrive solenoid valve | |
| Malfunction of the overdrive pressure control valve | |
| Malfunction of the regulator valve | |
| Malfunction of the switch valve | |
| Clogged orifice | |
| Incorrect valve body installation | |
| Only underdrive hydraulic pressure is abnormal | Malfunction of the oil seal K |
| Malfunction of the oil seal L | |
| Malfunction of the oil seal M | |
| Malfunction of the underdrive solenoid valve | |
| Malfunction of the underdrive pressure control valve | |
| Malfunction of check ball | |
| Clogged orifice | |
| Incorrect valve body installation | |
| Only reverse clutch hydraulic pressure is abnormal | Malfunction of the oil seal A |
| Malfunction of the oil seal B | |
| Malfunction of the oil seal C | |
| Clogged orifice | |
| Incorrect valve body installation | |
| Only overdrive hydraulic pressure is abnormal | Malfunction of the oil seal D |
| Malfunction of the oil seal E | |
| Malfunction of the oil seal F | |
| Malfunction of the overdrive solenoid valve | |
| Malfunction of the overdrive pressure control valve | |
| Malfunction check ball | |
| Clogged orifice | |
| Incorrect valve body installation | |
| Only low and reverse hydraulic pressure is abnormal | Malfunction of the oil seal I |
| Malfunction of the oil seal J | |
| Malfunction of the low and reverse solenoid valve | |
| Malfunction of the low and reverse pressure control valve | |
| Malfunction of the switch valve | |
| Malfunction of the fail safe valve A | |
| Malfunction of check ball | |
| Clogged orifice | |
| Incorrect valve body installation | |
| Only second hydraulic pressure is abnormal | Malfunction of the oil seal G |
| Malfunction of the oil seal H | |
| Malfunction of the oil seal O | |
| Malfunction of the second solenoid valve | |
| Malfunction of the second pressure control valve | |
| Malfunction of the fail safe valve B | |
| Clogged orifice | |
| Incorrect valve body installation | |
| Only reverse clutch hydraulic pressure is abnormal | Malfunction of the oil cooler |
| Malfunction of the oil seal N | |
| Malfunction of the damper clutch control solenoid valve | |
| Malfunction of the damper clutch control valve | |
| Malfunction of the torque converter pressure control valve | |
| Clogged orifice | |
| Pressure applied to non operating element | Incorrect valve body installation |
| Incorrect transmission control cable adjustment | |
| Malfunction of the manual valve | |
| Malfunction of check ball | |
| Incorrect valve body installation |
HYDRAULIC PRESSURE TEST DIAGNOSIS CHART
Code No. P0560 Back-up line for power
| Code No. P0560 Back-up line for power | Probable cause |
|---|---|
| TCU saves "LEARNING VALUE" and keeps it at certain value. Through this process, "LEARNING VALUE" is protected from being erased at disconnecting battery cable and maintaining related components. | Faulty TCM Faulty in harness |
DIAGNOSTIC TROUBLE CODE NO. P0560 - BACK-UP LINE FOR POWER
Scheme 22
Code No. P0605 EEPROM Abnormal
| Code No. P0605 EEPROM Abnormal | Probable cause |
|---|---|
| TCU saves "LEARNING VALUE" and keeps it at certain value. Through this process, "LEARNING VALUE" is protected from being erased at disconnecting battery cable and maintaining related components. | PCM/TCM |
DIAGNOSTIC TROUBLE CODE NO. P0605 - EEPROM ABNORMAL
Scheme 23
Code P0703 Stop light switch system
| Code P0703 Stop light switch system | Probable cause |
|---|---|
| If the stop light switch is on for 5 minutes or more while driving, it is judged that there is a short circuit in the stop light switch and diagnostic trouble code P0703 is output. | Malfunction of the stop light switch Malfunction of connector Malfunction of the TCM |
DIAGNOSTIC TROUBLE CODE NO. P0703 - STOP LIGHT SWITCH SYSTEM
Scheme 24
Code No. P0707 Transaxle range switch circuit
| Code No. P0707 Transaxle range switch circuit | Probable cause |
|---|---|
| The TCM (PCM) sets this code when the Transaxle Range Switch has no output signal for more than 30 seconds. | Open or short in circuit Faulty TRANSAXLE RANGE SWITCH Faulty TCM (PCM) |
DIAGNOSTIC TROUBLE CODE NO. P0707 - TRANSAXLE RANGE SWITCH CIRCUIT
Scheme 25
Code No. P0708 Transaxle range switch circuit
| Code No. P0708 Transaxle range switch circuit | Probable cause |
|---|---|
| The TCM sets this code when the Transaxle Range Switch outputs multiple signals for more than 30 seconds. | Open or short in circuit Faulty TRANSAXLE RANGE SWITCH Faulty TCM (PCM) |
DIAGNOSTIC TROUBLE CODE NO. P0708 - TRANSAXLE RANGE SWITCH CIRCUIT
Scheme 26
Code No. P0711 Oil temperature sensor system
| Code No. P0711 Oil temperature sensor system | Probable cause |
|---|---|
| This DTC code is set when the ATF temperature output voltage is lower than a value generated by thermistor resistance, in a normal operating range, for approximately 1 second or longer. The TCM regards the ATF temperature as fixed at a value of 80°C. | Sensor signal circuit is short to ground Faulty sensor Faulty PC M |
DIAGNOSTIC TROUBLE CODE NO. P0711 - OIL TEMPERATURE SENSOR SYSTEM
Scheme 27
Code P0712/P0713 Oil temperature sensor system
| Code P0712/P0713 Oil temperature sensor system | Probable cause |
|---|---|
| If the oil temperature sensor output voltage is 2.6V or more even after driving for 10 minutes or more (If the oil temperature does not increase), it is judged that there is an open circuit in the oil temperature sensor and diagnostic trouble code P0712/P0713 are output. If the oil temperature sensor output detects the voltage which corresponds to 200°C (392°F) or more for more than one second, it is judged that there is an open circuit in oil temperature sensor and diagnostic trouble code P0712/P0713 are output. | Malfunction of the oil temperature sensor Malfunction of connector Malfunction of the TCM |
DIAGNOSTIC TROUBLE CODE NO. P0712/P0713 - OIL TEMPERATURE SENSOR SYSTEM
Scheme 28
Code P0715 input shaft speed sensor system (Pulse generator 'A')
| Code P0715 input shaft speed sensor system (Pulse generator 'A') | Probable cause |
|---|---|
| If no output pulse is detected from the input shaft speed sensor for 1 second or more while driving in 3rd or 4th gear at a speed of 30 km/h (19 mph) or more, it is judged to be an open circuit or short-circuit in the input shaft speed sensor and diagnostic trouble code P0715 is output. If diagnostic trouble code P0715 is the output four times, the transaxle is locked into 3rd gear or 2nd gear as a fail-safe measure. | Malfunction of the input shaft speed sensor Malfunction of under drive clutch retainer Malfunction of connector Malfunction of the TCM |
DIAGNOSTIC TROUBLE CODE NO. P0715 - INPUT SHAFT SPEED SENSOR SYSTEM (PULSE GENERATOR 'A')
Scheme 29
Code P0720 Output shaft speed sensor system (Pulse generator 'B')
| Code P0720 Output shaft speed sensor system (Pulse generator 'B') | Probable cause |
|---|---|
| If the output from the output shaft speed sensor is continuously 50% lower than the vehicle speed for 1 second or more, it is judged to be an open circuit or short circuit in the output shaft speed sensor and diagnostic trouble code P0720 is output. | Malfunction of the output shaft speed sensor Malfunction of connector Malfunction of the TCM |
DIAGNOSTIC TROUBLE CODE NO. P0720 - OUTPUT SHAFT SPEED SENSOR SYSTEM (PULSE GENERATOR 'B')
Scheme 30
Code P0731 1st gear incorrect ratio
| Code P0731 1st gear incorrect ratio | Probable cause |
|---|---|
| If the output from the output shaft speed sensor multiplied by the 1st gear ratio is not the same as the output from the input shaft speed sensor after shifting to 1st gear has been completed, diagnostic trouble code P0731 is output. If P0731 is output four times, the transaxle is locked into 3rd gear as a fail-safe measure. | Malfunction of the input shaft speed sensor Malfunction of the output shaft speed sensor Malfunction of the underdrive clutch retainer Malfunction of the transfer drive gear or driven gear Malfunction of the low and reverse brake system Malfunction of the underdrive clutch system Noise generated |
DIAGNOSTIC TROUBLE CODE NO. P0731 - 1ST GEAR INCORRECT RATIO
Scheme 31
Code P0732 2nd gear incorrect ratio
| Code P0732 2nd gear incorrect ratio | Probable cause |
|---|---|
| If the output from the output shaft speed sensor multiplied by the 2nd gear ratio is not the same as the output from the input shaft speed sensor after shifting to 2nd gear has been completed, diagnostic trouble code P0732 is output. If diagnostic trouble code P0732 is output four times, the transaxle is locked into 3rd gear as a fail-safe measure. | Malfunction of the input shaft speed sensor Malfunction of the output shaft speed sensor Malfunction of the underdrive clutch retainer Malfunction of the transfer drive gear or driven gear Malfunction of the second brake system Malfunction of the underdrive clutch system Noise generated |
DIAGNOSTIC TROUBLE CODE NO. P0732 - 2ND GEAR INCORRECT RATIO
Scheme 32
Code P0733 3rd gear incorrect ratio
| Code P0733 3rd gear incorrect ratio | Probable cause |
|---|---|
| If the output from the output shaft speed sensor multiplied by the 3rd gear ratio is not the same as the output from the input shaft speed sensor after shifting to 3rd gear has been completed, diagnostic trouble code P0733 is output. If diagnostic trouble code P0733 is output four times, the transaxle is locked into 3rd gear as a fail-safe measure. | Malfunction of the input shaft speed sensor Malfunction of the output shaft speed sensor Malfunction of the underdrive clutch retainer Malfunction of the transfer drive gear or driven gear Malfunction of the overdrive clutch system Malfunction of the underdrive clutch system Noise generated |
DIAGNOSTIC TROUBLE CODE NO. P0733 - 3RD GEAR INCORRECT RATIO
Scheme 33
Code P0734 4th gear incorrect ratio
| Code P0734 4th gear incorrect ratio | Probable cause |
|---|---|
| If the output from the output shaft speed sensor multiplied by the 4th gear ratio is not the same as the output from the input shaft speed sensor after shifting to 4th gear has been completed, diagnostic trouble code P0734 is output. If diagnostic trouble code P0734 is output four times, the transaxle is locked into 3rd gear as a fail-safe measure. | Malfunction of the input shaft speed sensor Malfunction of the output shaft speed sensor Malfunction of the underdrive clutch retainer Malfunction of the transfer drive gear or driven gear Malfunction of the second brake system Malfunction of the overdrive clutch system Noise generated |
DIAGNOSTIC TROUBLE CODE NO. P0734 - 4TH GEAR INCORRECT RATIO
Scheme 34
Code No. P0735 5th gear incorrect ratio
| Code No. P0735 5th gear incorrect ratio | Probable cause |
|---|---|
| If the output from the output shaft speed sensor multiplied by the 5th gear ratio is not the same as the output from the input shaft speed sensor after shifting to 4th gear has been completed, diagnostic trouble Code No. P0735 is the output. If diagnostic trouble Code No. P0735 is the output four times, the transaxle is locked into 3rd gear as a fail-safe measure. | Malfunction of the input shaft speed sensor Malfunction of the output shaft speed sensor Malfunction of the direct clutch system Malfunction of the direct planetary carrier Malfunction of the overdrive clutch system Malfunction of the direct clutch system Noise generated |
DIAGNOSTIC TROUBLE CODE NO. P0735 - 5TH GEAR INCORRECT RATIO
Scheme 35
Code P0736 reverse gear incorrect ratio
| Code P0736 reverse gear incorrect ratio | Probable cause |
|---|---|
| If the output from the output shaft speed sensor multiplied by the reverse gear ratio is not the same as the output from the input shaft speed sensor after shifting to reverse gear has been completed, diagnostic trouble code P0736 is output. If diagnostic trouble code P0736 is output four times, the transaxle is locked into 3rd gear as a fail-safe measure | Malfunction of the input shaft speed sensor Malfunction of the output shaft speed sensor Malfunction of the underdrive clutch retainer Malfunction of the transfer drive gear or driven gear Malfunction of the low and reverse brake system Malfunction of the reverse clutch system Noise generated |
DIAGNOSTIC TROUBLE Code No. P0736 - REVERSE GEAR INCORRECT RATIO
Scheme 36
Code No. P0741/P0742/P0743 Torque converter clutch solenoid system
| Code No. P0741/P0742/P0743 Torque converter clutch solenoid system | Probable cause |
|---|---|
| If the resistance value for the torque converter clutch solenoid is too large or too small, it is judged that there is a short-circuit or an open circuit in the torque converter clutch solenoid and diagnostic trouble Code No. P0743 is the output. If the drive duty rate for the torque converter clutch solenoid is 100% for a continuous period of 4 seconds or more, it is judged that there is an abnormality in the torque converter clutch system and diagnostic trouble Code No. P0741 or P0742 is the output. When diagnostic trouble Code No. P0743 is the output, the transaxle is locked into 3rd gear as a fail-safe measure. If the lock-up clutch remains engaged for a continuous period of 10 seconds when the TCM is attempting to disengage the lock-up clutch, it is judged that the torque converter clutch is stuck on and diagnostic trouble code P0742 is set. | Malfunction of the torque converter clutch solenoid Malfunction of connector Malfunction of the TCM |
DIAGNOSTIC TROUBLE CODE NO. P0741/P0742/P0743 - TORQUE CONVERTER CLUTCH SOLENOID SYSTEM
Scheme 37
Code P0750 Low and reverse solenoid valve system; Code P0755 Underdrive solenoid valve system; Code P0760 Second solenoid valve system; Code P0765 Overdrive solenoid valve system; Code P0770 Reduction (RED) solenoid valve system
| Code P0750 Low and reverse solenoid valve system | Probable cause |
|---|---|
| Code P0755 Underdrive solenoid valve system | |
| Code P0760 Second solenoid valve system | |
| Code P0765 Overdrive solenoid valve system | |
| Code P0770 Reduction (RED) solenoid valve system | |
| If the resistance value for a solenoid valve is too large or too small, it is judged that there is a short circuit or an open circuit in the solenoid valve and the respective diagnostic trouble code is output. The transaxle is locked into 3rd gear as a fail-safe measure. | Malfunction of the solenoid valve Malfunction of connector Malfunction of the TCM |
DIAGNOSTIC TROUBLE CODE NO. P0750 - LOW AND REVERSE SOLENOID VALVE SYSTEM
Scheme 38
Code P0885 A/T Control relay system
| Code P0885 A/T Control relay system | Probable cause |
|---|---|
| If the relay voltage is less than 7V after the ignition switch has been turned to ON, it is judged that there is an open circuit or a short-circuit in the A/T control relay ground and diagnostic trouble code P0885 is output. The transaxle is locked into 3rd gear as a fail-safe measure. | Malfunction of the A/T control relay Malfunction of connector Malfunction of the TCM |
DIAGNOSTIC TROUBLE CODE NO. P0885 - A/T CONTROL RELAY SYSTEM
Scheme 39
INSPECTION PROCEDURE 1
| No communication with the scan tool | Probable cause |
|---|---|
| If communication with the scan tool is not possible, the cause is probably a defective diagnostic trouble line or the TCM is not functioning. | Malfunction of diagnostic trouble line Malfunction of connector Malfunction of the TCM |
TROUBLE SYMPTOMS - INSPECTION PROCEDURE 1
Scheme 40
INSPECTION PROCEDURE 2
| Starting impossible | Probable cause |
|---|---|
| Starting is not possible when the selector lever is in P or N range. In such cases, the cause is probably a defective engine, torque converter or oil pump. | Malfunction of the engine Malfunction of the torque converter Malfunction of the oil pump |
TROUBLE SYMPTOMS - INSPECTION PROCEDURE 2
Scheme 41
INSPECTION PROCEDURE 3
| Vehicle cannot move | Probable cause |
|---|---|
| If the vehicle does cannot move forward when the selector lever is shifted from N to D or L range while the engine is idling, the cause is probably abnormal line pressure or a malfunction of the underdrive clutch or valve body. | Abnormal line pressure Malfunction of the underdrive solenoid valve Malfunction of the underdrive clutch Malfunction of the valve body |
TROUBLE SYMPTOMS - INSPECTION PROCEDURE 3
Scheme 42
INSPECTION PROCEDURE 4
| Vehicle does not reverse | Probable cause |
|---|---|
| If the vehicle does not reverse when the selector lever is shifted from N to R range while the engine is idling, the cause is probably abnormal pressure in the reverse clutch or low reverse brake or a malfunction of the reverse clutch, low reverse brake or valve body. | Abnormal reverse clutch pressure Abnormal low reverse brake pressure Malfunction of the low reverse solenoid valve Malfunction of the reverse clutch Malfunction of the low reverse brake Malfunction of the valve body |
TROUBLE SYMPTOMS - INSPECTION PROCEDURE 4
Scheme 43
INSPECTION PROCEDURE 5
| Vehicle does not move (forward or reverse) | Probable cause |
|---|---|
| If the vehicle does not move forward or reverse when the selector lever is shifted to any position while the engine is idling, the cause is probably abnormal line pressure, or a malfunction of the power train, oil pump or valve body. | Abnormal line pressure Malfunction of the underdrive solenoid valve Malfunction of the underdrive clutch Malfunction of the valve body Malfunction of the power train |
TROUBLE SYMPTOMS - INSPECTION PROCEDURE 5
Scheme 44
INSPECTION PROCEDURE 6
| Engine stalls when shifting | Probable cause |
|---|---|
| If the engine stalls when the selector lever is shifted from N to D or R range while the engine is idling, the cause is probably a malfunction of the engine, torque converter clutch solenoid, valve body or torque converter (torque converter clutch malfunction). | Malfunction of the engine Malfunction of the torque converter clutch solenoid Malfunction of the valve body Malfunction of the torque converter (Malfunction of the torque converter clutch) |
TROUBLE SYMPTOMS - INSPECTION PROCEDURE 6
Scheme 45
INSPECTION PROCEDURE 7
| Shock or delay when changing from N to D | Probable cause |
|---|---|
| If abnormal shocks or a time lag of 2 second or more occurs when the selector lever is shifted from N to D range while the engine is idling, the cause is probably abnormal underdrive clutch pressure or a malfunction of the underdrive clutch, valve body or closed throttle position switch. | Abnormal line pressure Malfunction of the underdrive solenoid valve Malfunction of the underdrive clutch Malfunction of the valve body Malfunction of the closed throttle position switch |
TROUBLE SYMPTOMS - INSPECTION PROCEDURE 7
Scheme 46
INSPECTION PROCEDURE 8
| Shock or delay when changing from N to R | Probable cause |
|---|---|
| If abnormal shock or a time lag of 2 seconds or more occurs when the selector lever is shifted from N to R range while the engine is idling, the cause is probably abnormal reverse clutch pressure or low and reverse brake pressure, or a malfunction or the reverse clutch, low and reverse brake, valve body. | Abnormal reverse clutch pressure Abnormal low and reverse brake pressure Malfunction of the low and reverse solenoid valve Malfunction of the reverse clutch Malfunction of the low and reverse brake Malfunction of the valve body |
TROUBLE SYMPTOMS - INSPECTION PROCEDURE 8
Scheme 47
INSPECTION PROCEDURE 9
| Shock or delay when changing from N to D, N to R | Probable cause |
|---|---|
| If abnormal shock or a time lag of 2 seconds or more occurs when the selector lever is shifted from N to D, N to R range while the engine is idling, the cause is probably abnormal line pressure or a malfunction of the oil pump or valve body. | Abnormal line pressure Malfunction of the oil pump Malfunction of the valve body |
TROUBLE SYMPTOMS - INSPECTION PROCEDURE 9
Scheme 48
INSPECTION PROCEDURE 10
| Shocks and running up | Probable cause |
|---|---|
| If shocks occur when driving due to upshifting or downshifting and the transaxle speed becomes higher than the engine speed, the cause is probably abnormal line pressure or a malfunction of a solenoid valve, oil pump, valve body or of a brake or clutch. | Abnormal line pressure Malfunction of each solenoid valve Malfunction of the oil pump Malfunction of the valve body Malfunction of each brake or each clutch |
TROUBLE SYMPTOMS - INSPECTION PROCEDURE 10
Scheme 49
INSPECTION PROCEDURE 11
| Changed shift points (All points) | Probable cause |
|---|---|
| If all shift points are changed while driving, the cause is probably a malfunction of the output shaft speed sensor, TPS or a solenoid valve. | Malfunction of the output shaft speed sensor Malfunction of the throttle position sensor Malfunction of each solenoid valve Abnormal line pressure Malfunction of the valve body Malfunction of the TCM |
TROUBLE SYMPTOMS - INSPECTION PROCEDURE 11
Scheme 50
INSPECTION PROCEDURE 12
| Displaced shift points (Some points) | Probable cause |
|---|---|
| If some of the shift points are changed while driving, the cause is probably a malfunction of the valve body, or it is related to adaptive logic control and is not an abnormality. | Malfunction of the valve body |
TROUBLE SYMPTOMS - INSPECTION PROCEDURE 12
Scheme 51
INSPECTION PROCEDURE 13
| No diagnostic trouble codes (Does not shift) | Probable cause |
|---|---|
| If shifting does not occur while driving and no diagnostic trouble codes are given, the cause is probably a malfunction of the Park/Neutral switch, or the TCM. | Malfunction of the Park/Neutral switch Malfunction of the TCM |
TROUBLE SYMPTOMS - INSPECTION PROCEDURE 13
Scheme 52
INSPECTION PROCEDURE 14
| Poor acceleration | Probable cause |
|---|---|
| If acceleration is poor even if downshifting occurs while driving, the cause is probably a malfunction of the engine system, a brake or clutch, or the transaxle is in fail-safe. | Malfunction of the engine system Malfunction of the brake or clutch Transaxle in fail-safe |
TROUBLE SYMPTOMS - INSPECTION PROCEDURE 14
Scheme 53
INSPECTION PROCEDURE 15
| Vibration | Probable cause |
|---|---|
| If vibration occurs when driving at constant speed or when accelerating in top range, the cause is probably abnormal torque converter clutch pressure or a malfunction of the engine, torque converter clutch solenoid, torque converter or valve body. | Abnormal torque converter clutch pressure Malfunction of the engine Malfunction of the torque converter clutch solenoid Malfunction of the torque converter Malfunction of the valve body |
TROUBLE SYMPTOMS - INSPECTION PROCEDURE 15
Scheme 54
Scheme 55
Scheme 56
Scheme 57
Scheme 58
Scheme 59
Scheme 60
Scheme 61
Scheme 62
CLUTCHES
The gear changing mechanism utilizes three multi-disc clutches. The retainers of these clutches are fabricated from high-precision sheet metal for lightness and ease of production. Also, more responsive gear shifts at high engine speeds are achieved by a pressure-balanced piston mechanism that cancels out centrifugal hydraulic pressure. This mechanism replaces the conventional ball check valve.
Underdrive clutch
The underdrive clutch operates in 1st, 2nd, and 3rd gears and transmits driving force from the input shaft to the underdrive sun gear.
The components comprising the underdrive clutch are as illustrated on (Scheme 63).
Hydraulic pressure acts in the piston pressure chamber (between the piston and retainer) and thus pushes the piston. In turn, the piston depresses the clutch discs and thereby transmits driving force from the retainer to the hub side.
Scheme 63
At high speeds, fluid remaining in the piston pressure chamber is subjected to centrifugal force and attempts to push the piston.
However, fluid in the balance fluid chamber (the space between the piston and return spring retainer) is also subjected to centrifugal force.
Thus, the hydraulic pressure on one side of the piston cancels out the hydraulic pressure on the other side, and the piston does not move.
Scheme 64
Reverse clutch and overdrive clutch
The reverse clutch operates when the reverse gear is selected and transmits driving force from the input shaft to the reverse sun gear.
The overdrive clutch operates in 3rd and 4th gears and transmits driving force from the input shaft to the overdrive planetary carrier and low-reverse annulus gear.
Scheme 65
BRAKES
The gear changing mechanism utilizes two multi-disc brakes.
Low-reverse brake and second brake
The low-reverse brake operates in 1st and reverse gears, when the vehicle is parked, and during manual operation. It locks the low-reverse annulus gear and overdrive planetary carrier to the case.
The second brake operates in 2nd and 4th gears and locks the reverse sun gear to the case.
The components comprising the low-reverse brake and second brake are as illustrated on (Scheme 66).
As shown, the discs and plates of the two brakes are arranged on either side of the rear cushion plate, which is itself secured to the case by a snap ring.
Scheme 66
Planetary Gear Sets
The planetary gear sets have two planetary gears each. The carrier of one gear set is connected mechanically to the annulus gear of the other.
This arrangement allows the gear ratio to be varied by connecting or locking the carriers and sun gears.
Scheme 67
Transfer Drive Gear
With the transfer drive gear, increased tooth height and a higher contact ratio have reduced gear noise.
Also, the bearing that supports the drive gear is a preloaded type that eliminates rattle, and the rigidity of the gear mounting has been increased by bolting the bearing directly onto the case.
Scheme 68
Output Shaft/Transfer Drive Gear
(Scheme 69), the transfer driven gear is press-fitted onto the output shaft, and the output shaft is secured by a locknut and supported by bearings.
The locknut has a left-handed thread, and a hexagonal hole in the other end of the shaft enables the shaft to be held in position for locknut removal.
Scheme 69
Manual Control Lever
The manual control lever is fitted to the top of the valve body and is linked to the parking roller rod and manual control valve pin.
A detent mechanism is provided to improve the gear shift feeling during manual selection.
Parking Mechanism
When the manual control lever is moved to the parking position, the parking roller rod moves along the parking roller support and pushes up the parking sprag.
As a result, the parking sprag meshes with the transfer driven gear (parking gear), thereby locking the output shaft. To minimize the operating force required, a roller is fitted to the end of the rod.
Scheme 70
Scheme 71
Scheme 72
Scheme 73
Scheme 74
Scheme 75
Scheme 76
Scheme 77
Scheme 78
Scheme 79
Scheme 80
Scheme 81
Scheme 82
Scheme 83
Scheme 84
Scheme 85
Scheme 86
Scheme 87
Scheme 88
Scheme 89
Scheme 90
Scheme 91
Scheme 92
Scheme 93
- Remove the battery terminal and battery.
- Remove the drain plug and drain the automatic transaxle fluid.
- Remove the air cleaner assembly. Upper Lower
- Disconnect the speedometer sensor connector.
- Disconnect the transaxle range switch connector, solenoid connector, and oil temperature sensor connector.
- Remove the oil cooler hose.
- Remove the control cable.
- Remove the steering u-joint bolt and return tube mounting bolts. NOTE: Mark a mating line on the steering column universal joint and the gear box before disassembling to make the installation easier.
- Separate the power steering oil pump hose.
- Separate the power steering return hose.
- Remove the upper connecting transaxle bolt.
- Attach the special tool, engine support fixture, (J28467-B, J28467-125) to the engine hooks.
- Remove the tire and caliper.
- Separate the tie rod end.
- Remove the wheel speed sensor and the knuckle mounting bolt.
- Remove the transaxle mounting bracket. Insulator bolt Body mounting bolt (Upper) Body mounting bolt (Side) Transaxle side mounting bolt.
- Remove the front roll stopper. Insulator bolt Stopper bolt (Upper) Stopper bolt (Lower)
- Remove the rear roll stopper. Insulator bolt Stopper bolt
- Remove the drive shaft.
- Remove the subframe mounting bolts and the subframe.
- Install the jack under the transaxle assembly.
- Remove the automatic transaxle mounting lower bolts.
- Remove the engine to automatic transaxle bolts.
- Remove the automatic transaxle assembly by jack. CAUTION: Engine and transmission mounting Insulators should be Installed as specified orders. Mounting bracket Installation procedures. Engine mounting bracket. T/M mounting bracket. Rear roll stopper mounting bracket. Front roll stopper mounting bracket. When Installing the front roll stopper mounting bracket, be especially careful not to crush the Insulator. If crushed, idle vibration may occur.
INSTALLATION
- Attach the torque converter on the transaxle side and mount the transaxle assembly onto the engine. CAUTION: If the torque converter Is mounted first on the engine, the oil seal on the transaxle may be damaged. Therefore, first be sure to assemble the torque converter to the transaxle.
- Install the transaxle control cable and adjust as follows: Move the shift lever and the transaxle range switch to the "N" position and install the control cable. When connecting the control cable to the transaxle mounting bracket, install the clip until it contacts to the control cable. Remove any free-play in the control cable by adjusting the nut and then check to see that the selected lever moves smoothly. Check to see that the control cable has been adjusted correctly.
- Installation is the reverse of removal.
Scheme 94
Scheme 95
Scheme 96
- Move A/T lever to "P" position to set the key lock cam and the shift lock cam (Scheme 96) Check that the key lock cam is located at "B" by the detent pin. Check that the shift lock cam is located at "A".
- Check that the key cylinder is at "LOCK".
PROCEDURE FOR ADJUSTING SHIFT LOCK AND KEY LOCK CABLE
- Check that each lock cam is see scheme 97
- Install the shift lock and key lock cable in position. In this case, the shift lock cable must be fixed to the brake pedal and the key lock cable must be fixed to the key cylinder.
- Temporarily install each cable to the A/T lever assembly see scheme 97 Securely insert the cable end into the fixing pin of each cam.
- Slightly pull the shift lock cable in the direction "E".
- After checking that the portion of the cable end touches the cable fixing pin, fix with the self-tapping bolt.
- Slightly push the key lock cam to direction "Q".
- Slightly pull the key lock cable in the direction "G" to stretch the cable. Then fix the cable with the self-tapping bolt.
- Check that the key lock and the shift lock cable are secure.
PROCEDURE FOR CHECKING THE SHIFT LOCK
- When the brake pedal is not depressed, the push button of the shift lever at "P" position must not be operable. (Shift lever cannot be shifted at the other positions from "P")
- When the brake pedal stroke is 15~22mm (with shift lever at "P" position), the push button should be operable without catching and the shift lever should shift smoothly to other positions.
- When the brake pedal is not depressed, the shift lever should shift smoothly to "P" position from all heading other positions.
- The brake pedal must operate smoothly without catching.
- When the ignition key is at the "LOCK" position, although brake pedal is depressed, the push button should be operable.
- The Ignition key must not be able to be turned to the "LOCK" position except in the "P" position.
- If the shift lever is shifted to the "P" position, the ignition key must turn to the "LOCK" position smoothly.