| TIBURON(GK) >2006 > G 2.7 DOHC > Automatic Transaxle System > Automatic Transaxle System>Repair procedures (F4A42-2) |

SERVICE ADJUSTMENT PROCEDURE
AUTOMATIC TRANSAXLE FLUID CHECK
1. | Drive the vehicle until the fluid temperature rises to the normal temperature (70~80°C).
2. | Park the vehicle on a level surface.
3. | 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.
4. | After wiping off any dirt around the oil level gauge, reinsert and remove the oil level gauge and check the condition of the fluid.
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.
5. | 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.
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.
6. | Insert the oil level gauge securely.
7. | 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.
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.
AUTOMATIC TRANSAXLE FLUID
1. | Remove the drain plug from the bottom of the transaxle case to drain the fluid.
2. | Install the drain plug and gasket, and tighten to the specified torque.
Tightening torque : 32 Nm (320 kgf•cm, 23 lbf•ft)
3. | Pour the new fluid in through the oil filler tube.
Stop pouring if the full volume of fluid cannot be poured in.
4. | Repeat the procedure in step 1 if too much fluid was added.
5. | Reconnect the hose that was disconnected in step 1 above, and firmly replace the oil level gauge.
6. | Start the engine and run it at idle for 1-2 minutes.
7. | Move the select lever through all positions, and then move it to the N position.
8. | 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.
9. | Firmly insert the oil level gauge into the oil filler tube. TRANSAXLE RANGE SWITCH CONTINUITY CHECK
TRANSAXLE RANGE SWITCH AND CONTROL CABLE ADJUSTMENT
1. | Set the selector lever to the "N" position.
2. | Loosen the control cable to the manual control lever coupling nut to free the cable and lever.
3. | Set the manual control lever to the neutral position.
4. | 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 the figure) in the flange of the transaxle range switch body flange are aligned.
5. | 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.
6. | Gently pull the transaxle control cable in the direction of the arrow, then tighten the adjusting nut.
7. | Check that the selector lever is in the "N" position.
8. | Check that each range on the transaxle side operates and functions correctly for each position of the selector lever.
A/T CONTROL COMPONENT CHECK
1. | 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 FL-section).
2. | OIL TEMPERATURE SENSOR CHECK
(1) | Remove the oil temperature sensor.
(2) | Measure the resistance between terminals 1 and 2 of the oil temperature sensor connector. STANDARD VALUE
Oil temperature (°C) | Resistance (KΩ)
0 | 16.7 ~ 20.5
100 | 0.57 ~ 0.69
3. | VEHICLE SPEED SENSOR CHECK
(1) | Remove the vehicle speed sensor and connect a 3~10 KΩ resistance as shown in the illustration.
(2) | Turn the shaft of the vehicle speed sensor and check that there is voltage between terminals 2-3 (1 turn=4 pulses).
4. | A/T CONTROL RELAY CHECK
(1) | Remove the A/T control relay.
(2) | Use jumper wires to connect A/T control relay terminal 2 to the battery (+) terminal and terminal 4 to the battery (-) terminal.
(3) | 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.
(4) | If there is a problem, replace the A/T control relay.
Jumper wire | Continuity between terminal No.1
Connected | Continuity
Disconnected | No continuity
5. | SOLENOID VALVE CHECK
(1) | Remove the valve body cover.
(2) | Disconnect the connectors of each solenoid valve.
(3) | Measure the resistance between terminals 1 and 2 of each solenoid valve. STANDARD VALUE
Name | Resistance
Damper clutch solenoid valve | 2.7 ~ 3.4Ω (at 20°C)
Low and reverse solenoid valve
Second solenoid valve
Underdrive solenoid valve
Overdrive solenoid valve
(4) | If the resistance is outside the standard value, replace the solenoid valve.
Resistance of the solenoid valve connector.
Terminal No. | Name | Resistance
7 & 10 | Damper clutch solenoid valve | 2.7 ~ 3.4Ω (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
SERVICE ADJUSTMENT PROCEDURE
AUTOMATIC TRANSAXLE FLUID CHECK
1. | Drive the vehicle until the fluid temperature rises to the normal temperature (70~80°C).
2. | Park the vehicle on a level surface.
3. | 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.
4. | After wiping off any dirt around the oil level gauge, reinsert and remove the oil level gauge and check the condition of the fluid.
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.
5. | 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.
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.
6. | Insert the oil level gauge securely.
7. | 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.
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.
AUTOMATIC TRANSAXLE FLUID
1. | Remove the drain plug from the bottom of the transaxle case to drain the fluid.
2. | Install the drain plug and gasket, and tighten to the specified torque.
Tightening torque : 32 Nm (320 kgf•cm, 23 lbf•ft)
3. | Pour the new fluid in through the oil filler tube.
Stop pouring if the full volume of fluid cannot be poured in.
4. | Repeat the procedure in step 1 if too much fluid was added.
5. | Reconnect the hose that was disconnected in step 1 above, and firmly replace the oil level gauge.
6. | Start the engine and run it at idle for 1-2 minutes.
7. | Move the select lever through all positions, and then move it to the N position.
8. | 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.
9. | Firmly insert the oil level gauge into the oil filler tube. TRANSAXLE RANGE SWITCH CONTINUITY CHECK
TRANSAXLE RANGE SWITCH AND CONTROL CABLE ADJUSTMENT
1. | Set the selector lever to the "N" position.
2. | Loosen the control cable to the manual control lever coupling nut to free the cable and lever.
3. | Set the manual control lever to the neutral position.
4. | 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 the figure) in the flange of the transaxle range switch body flange are aligned.
5. | 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.
6. | Gently pull the transaxle control cable in the direction of the arrow, then tighten the adjusting nut.
7. | Check that the selector lever is in the "N" position.
8. | Check that each range on the transaxle side operates and functions correctly for each position of the selector lever.
A/T CONTROL COMPONENT CHECK
1. | 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 FL-section).
2. | OIL TEMPERATURE SENSOR CHECK
(1) | Remove the oil temperature sensor.
(2) | Measure the resistance between terminals 1 and 2 of the oil temperature sensor connector. STANDARD VALUE
Oil temperature (°C) | Resistance (KΩ)
0 | 16.7 ~ 20.5
100 | 0.57 ~ 0.69
3. | VEHICLE SPEED SENSOR CHECK
(1) | Remove the vehicle speed sensor and connect a 3~10 KΩ resistance as shown in the illustration.
(2) | Turn the shaft of the vehicle speed sensor and check that there is voltage between terminals 2-3 (1 turn=4 pulses).
4. | A/T CONTROL RELAY CHECK
(1) | Remove the A/T control relay.
(2) | Use jumper wires to connect A/T control relay terminal 2 to the battery (+) terminal and terminal 4 to the battery (-) terminal.
(3) | 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.
(4) | If there is a problem, replace the A/T control relay.
Jumper wire | Continuity between terminal No.1
Connected | Continuity
Disconnected | No continuity
5. | SOLENOID VALVE CHECK
(1) | Remove the valve body cover.
(2) | Disconnect the connectors of each solenoid valve.
(3) | Measure the resistance between terminals 1 and 2 of each solenoid valve. STANDARD VALUE
Name | Resistance
Damper clutch solenoid valve | 2.7 ~ 3.4Ω (at 20°C)
Low and reverse solenoid valve
Second solenoid valve
Underdrive solenoid valve
Overdrive solenoid valve
(4) | If the resistance is outside the standard value, replace the solenoid valve.
Resistance of the solenoid valve connector.
Terminal No. | Name | Resistance
7 & 10 | Damper clutch solenoid valve | 2.7 ~ 3.4Ω (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