A/T Description
This automatic transaxle is a full automatic type with 4-speed.
The torque converter is a 3-element, 1-step and 2-phase type and is equipped with an electronically controlled lock-up mechanism. The gear shift device consists of 3 sets of planetary gear units, 3 disc type clutches, 3 disc type brakes, a band type brake and 3 one-way clutches. The gear shift is done by selecting one of 7 positions ("P", "R", "N", "D", "3", "2" and "L") by means of the select lever installed on the floor.
Scheme 2
Scheme 3
Table of Component Operation
| Forward clutch | Direct clutch | U/D clutch | 2nd coast brake | 2nd brake | 1st/reverse brake | U/D brake | One-way No. 1 clutch | One-way No. 2 clutch | One-way No. 3 clutch | ||
|---|---|---|---|---|---|---|---|---|---|---|---|
| P | X | X | X | X | X | X | X | X | X | ||
| R | X | X | X | X | X | X | X | ||||
| N | X | X | X | X | X | X | X | X | X | ||
| D | 1st | X | X | X | X | X | X | ||||
| 2nd | X | X | X | X | |||||||
| 3rd | X | X | X | X | X | ||||||
| 4th | X | X | X | X | X | X | |||||
| 2 | 1st | X | X | X | X | X | X | ||||
| 2nd | X | X | X | X | |||||||
| 3rd | X | X | X | X | X | ||||||
| L | 1st | X | X | X | X | X | |||||
| 2nd | X | X | X | X | |||||||
| ON x: OFF | |||||||||||
COMPONENT OPERATION TABLE
A/T Diagnosis General Description
This vehicle is equipped with an electronic transaxle control system, which controls the automatic shift up and shift down timing, TCC operation, etc. suitably to vehicle driving conditions.
TCM has an On-Board Diagnosis System which detects a malfunction in this system and abnormality of those parts that influence the engine exhaust emission.
When diagnosing a trouble in transaxle including this system, be sure to have full understanding of the outline of ON-BOARD DIAGNOSTIC SYSTEM DESCRIPTION and each item in PRECAUTIONS IN DIAGNOSING TROUBLE and execute diagnosis according to A/T SYSTEM CHECK to obtain correct result smoothly.
On-Board Diagnostic System Description
For automatic transaxle control system, TCM has following functions.
Scheme 4
- When the ignition switch is turned ON with the engine at a stop, MIL (1) turns ON to check the MIL and its circuit.
- When TCM detects a malfunction in A/T control system (and/or a malfunction which gives an adverse effect to vehicle emission) while the engine is running, TCM requires ECM to make the malfunction indicator lamp in the meter cluster of the instrument panel turn ON. TCM stores the malfunction area (DTC according to SAE J2012) in TCM memory. (If it detects that continuously 3 driving cycles are normal after detecting a malfunction, however, it makes MIL turn OFF although DTC stored in its memory will remain.)
- It is possible to communicate through DLC (3) by using not only SUZUKI scan tool (2) but also CAN communication OBD generic scan tool which are in compliance with SAE J1978. (Diagnostic information can be accessed by using a scan tool.)
- For information about the following items, refer to «ON-BOARD DIAGNOSTIC SYSTEM DESCRIPTION»(ref-268912-S09833748282007102700000) . Warm-up cycle Driving cycle 2 driving cycle detection logic Pending DTC Freeze frame date
CAN Communication System Description
Refer to CAN COMMUNICATION SYSTEM DESCRIPTION . TCM communicates control data with each control module as follows.
Scheme 5
Scheme 6
Scheme 7
DTC Description/Detecting Condition/Confirmation Procedure
P0707
Refer to DTC P0707: TRANSMISSION RANGE SENSOR CIRCUIT LOW .
P0712
Refer to DTC P0712: TRANSMISSION FLUID TEMPERATURE SENSOR "A" CIRCUIT LOW .
P0713
Refer to DTC P0713: TRANSMISSION FLUID TEMPERATURE SENSOR "A" CIRCUIT HIGH .
P0962
Refer to DTC P0962: PRESSURE CONTROL SOLENOID "A" CONTROL CIRCUIT LOW .
P0963
Refer to DTC P0963: PRESSURE CONTROL SOLENOID "A" CONTROL CIRCUIT HIGH .
P0973
Refer to DTC P0973/P0976: SHIFT SOLENOID "A" CONTROL CIRCUIT LOW/SHIFT SOLENOID "B" CONTROL CIRCUIT LOW .
P0974
Refer to DTC P0974/P0977: SHIFT SOLENOID "A" CONTROL CIRCUIT HIGH/SHIFT SOLENOID "B" CONTROL CIRCUIT HIGH .
P0976
Refer to DTC P0973/P0976: SHIFT SOLENOID "A" CONTROL CIRCUIT LOW/SHIFT SOLENOID "B" CONTROL CIRCUIT LOW .
P0977
Refer to DTC P0974/P0977: SHIFT SOLENOID "A" CONTROL CIRCUIT HIGH/SHIFT SOLENOID "B" CONTROL CIRCUIT HIGH .
P1723
Refer to DTC P1723: RANGE SELECT SWITCH MALFUNCTION .
P2763
Refer to DTC P2763: TORQUE CONVERTER CLUTCH PRESSURE CONTROL SOLENOID CONTROL CIRCUIT HIGH .
P2764
Refer to DTC P2764: TORQUE CONVERTER CLUTCH PRESSURE CONTROL SOLENOID CONTROL CIRCUIT LOW .
Operation
| DTC | P0707 |
|---|---|
| Monitor execution | Continuous |
| Monitoring duration | 30 seconds |
MONITORING PROCEDURE
| DTC | P0712 / P0713 |
|---|---|
| Monitor execution | Continuous |
| Monitoring duration | 300 seconds (P0712), 12 seconds (P0713) |
TRANSMISSION FLUID TEMPERATURE SENSOR CIRCUIT MONITOR
| DTC | P0962/P0963 |
|---|---|
| Monitor execution | Continuous |
| Monitoring duration | 12.5 seconds (P0962), 0.5 seconds (P0963) |
PRESSURE CONTROL SOLENOID CIRCUIT MONITOR
| DTC | P0973 / P0974 |
|---|---|
| Monitor execution | Continuous |
| Monitoring duration | 0.5 seconds |
SHIFT SOLENOID "A" CIRCUIT MONITOR
| DTC | P0976/P0977 |
|---|---|
| Monitor execution | Continuous |
| Monitoring duration | 0.5 seconds |
SHIFT SOLENOID "B" CIRCUIT MONITOR
| DTC | P1723 |
|---|---|
| Monitor execution | Continuous |
| Monitoring duration | 2 seconds |
POSITION SWITCH CIRCUIT MONITOR
| DTC | P2763 / P2764 |
|---|---|
| Monitor execution | Continuous |
| Monitoring duration | 0.5 seconds (P2763) / 0.63 seconds (P2764) |
TCC SOLENOID VALVE CIRCUIT MONITOR
P0705
Refer to DTC P0705: TRANSMISSION RANGE SENSOR CIRCUIT MALFUNCTION (P R N D L INPUT) .
P0711
Refer to DTC P0711: TRANSMISSION FLUID TEMPERATURE SENSOR "A" CIRCUIT RANGE/PERFORMANCE .
P0717
Refer to DTC P0717: INPUT SPEED SENSOR "A" CIRCUIT NO SIGNAL .
P0722
Refer to DTC P0722: OUTPUT SPEED SENSOR CIRCUIT NO SIGNAL .
P0741
Refer to DTC P0741/P0742: TORQUE CONVERTER CLUTCH CIRCUIT PERFORMANCE OR STUCK OFF/STUCK ON .
P0742
Refer to DTC P0741/P0742: TORQUE CONVERTER CLUTCH CIRCUIT PERFORMANCE OR STUCK OFF/STUCK ON .
P0751
Refer to DTC P0751/P0752: SHIFT SOLENOID "A" PERFORMANCE OR STUCK OFF/SHIFT SOLENOID "A" STUCK ON .
P0752
Refer to DTC P0751/P0752: SHIFT SOLENOID "A" PERFORMANCE OR STUCK OFF/SHIFT SOLENOID "A" STUCK ON .
P0756
Refer to DTC P0756/P0757: SHIFT SOLENOID "B" PERFORMANCE OR STUCK OFF/SHIFT SOLENOID "B" STUCK ON .
P0757
Refer to DTC P0756/P0757: SHIFT SOLENOID "B" PERFORMANCE OR STUCK OFF/SHIFT SOLENOID "B" STUCK ON .
P0961
Refer to DTC P0961: PRESSURE CONTROL SOLENOID "A" CONTROL CIRCUIT RANGE/PERFORMANCE .
P1702
Refer to DTC P0602/P1702: CONTROL MODULE PROGRAMMING ERROR/INTERNAL CONTROL MODULE CHECK SUM ERROR .
U0073
Refer to DTC U0073: CONTROL MODULE COMMUNICATION BUS OFF .
U0100
Refer to DTC U0100: LOST COMMUNICATION WITH ECM .
| DTC | P0705 |
|---|---|
| Monitor execution | Continuous |
| Monitoring duration | 10 seconds |
TRANSMISSION RANGE SENSOR RATIONALITY MONITOR
| DTC | P0711 |
|---|---|
| Monitor execution | Continuous |
| Monitoring duration | 600 seconds |
TRANSMISSION FLUID TEMPERATURE SENSOR RATIONALITY MONITOR
| DTC | P0717 |
|---|---|
| Monitor execution | Continuous |
| Monitoring duration | 500 times |
INPUT SHAFT SPEED SENSOR RATIONALITY MONITOR
| DTC | P0722 |
|---|---|
| Monitor execution | Continuous |
| Monitoring duration | 500 times |
OUTPUT SHAFT SPEED SENSOR RATIONALITY MONITOR
| DTC | P0741 / P0742 |
|---|---|
| Monitor execution | Continuous |
| Monitoring duration | 12 seconds |
TCC SOLENOID VALVE RATIONALITY MONITOR
| DTC | P0751 / P0752 |
|---|---|
| Monitor execution | Continuous |
| Monitoring duration | 5 seconds |
SHIFT SOLENOID VALVE "A" RATIONALITY MONITOR
| DTC | P0756 / P0757 |
|---|---|
| Monitor execution | Continuous |
| Monitoring duration | 3 seconds (P0756) / 5 seconds (P0757) |
SHIFT SOLENOID VALVE "B" RATIONALITY MONITOR
| DTC | P0961 |
|---|---|
| Monitor execution | Continuous |
| Monitoring duration | 2 times (0.4 - 8 seconds) |
PRESSURE CONTROL SOLENOID VALVE RATIONALITY MONITOR
| DTC | P1702 |
|---|---|
| Monitor execution | Continuous |
| Monitoring duration | Not applicable |
TCM INTERNAL CIRCUIT AND MEMORY MONITOR
| DTC | U0073/U0100 |
|---|---|
| Monitor execution | Continuous |
| Monitoring duration | 30 times (U0073) / 2 seconds (U0100) |
CAN COMMUNICATION SIGNAL CIRCUIT RATIONALITY MONITOR
Operation of Shift Solenoid Valves and TCC Solenoid Valve
| Range | D | 2 | L | R | P & N | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Gear | 1st | 2nd | 3rd | 4th | 1st | 2nd | 3rd | 1st | 2nd | Rev | ||
| Solenoids | Shift solenoid valve-A (No. 1) | X | X | X | X | X | X | |||||
| Shift solenoid valve-B (No. 2) | X | X | X | |||||||||
| TCC solenoid valve | X | X | (•) | (•) | X | X | X | X | X | X | X | |
| ON (Turn power on) x: OFF (Turn power off) (•): ON only when lock-up function operates | ||||||||||||
OPERATION OF SHIFT SOLENOID VALVES AND TCC SOLENOID VALVE
| Valve status | ||
|---|---|---|
| Turn power ON | Turn power OFF | |
| Shift solenoid valve-A (No. 1) | Open | Close |
| Shift solenoid valve-B (No. 2) | Open | Close |
| TCC solenoid valve | Close | Open |
SHIFT SOLENOID VALVES FUNCTION TABLE
System Description
Internal control module is installed in ECM.
Operation Check
Shift solenoid valve -A (No. 1) and -B (No. 2)
- Check that solenoid valve (1) actuate with click sound when battery voltage is conducted.
- Apply oiler (2) to solenoid valve (1) and give compression by hands and then check to be sure that transaxle fluid from oiler does not come out of holes in solenoid valve when battery voltage is not conducted.
- Under the same conditions, conduct battery voltage and then make sure that fluid comes out with vigor. If check result is not as described, replace shift solenoid valve.
Scheme 8
TCC solenoid valve
- Check that solenoid valve (1) actuate with click sound when battery voltage is conducted.
- Apply oiler (2) to solenoid valve (1) and give compression by hands and then check to be sure that transaxle fluid from oiler does not come out of holes in solenoid valve when battery voltage is conducted.
- Under the same conditions, release battery voltage and then make sure that fluid comes out with vigor. If check result is not as described, replace shift solenoid valve.
Scheme 9
Check pressure control solenoid valve operation in the either manner of the following.
Scheme 10
- Connect pressure control solenoid valve (1) with regulated DC power supply (2) (Scheme 8)
- Turn regulated DC power supply switch ON and increase voltage of power supply keeping current within 1.0 A.
- Check for gradual movement of valve (3) in the direction of arrow "A" as voltage is increased.
- Check movement of valve (3) in the direction of arrow "B" as voltage is decreased.
- Turn power supply switch OFF. CAUTION: Do not pass current 1.0 A or more, or pressure control solenoid is burned out.
Scheme 11
- Connect pressure control solenoid valve (1) to battery (2) setting the 8 - 10 W bulb (4) on the way (Scheme 9)
- Check for movement of valve (3) in the direction of arrow "A".
- Disconnect pressure control solenoid valve (1) from battery (2) and check movement of valve (3) in the direction of arrow "B". CAUTION: Set 8 - 10 W bulb on the way, or pressure control solenoid valve is burned out.
1st/Reverse Brake and One-Way No. 2 Clutch Operation Check
Reference: AUTOMATIC TRANSAXLE UNIT DISASSEMBLY
Reference: AUTOMATIC TRANSAXLE UNIT ASSEMBLY
Scheme 12
- Check that one-way No. 2 clutch (1) turns freely when turned counterclockwise [A] and looks when turned clockwise [B].
Underdrive Clutch and One-Way No. 3 Clutch Operation Check
Reference: AUTOMATIC TRANSAXLE UNIT DISASSEMBLY
Reference: AUTOMATIC TRANSAXLE UNIT ASSEMBLY
Scheme 13
- Install one-way No. 3 clutch (1) to underdrive clutch drum (2).
- Check that one-way No. 3 clutch turns freely when turned counterclockwise [A] and locks when turned clockwise [B].
Reduction Drive Gear Assembly Operation Check
Reference: AUTOMATIC TRANSAXLE UNIT DISASSEMBLY
Reference: AUTOMATIC TRANSAXLE UNIT ASSEMBLY
Measure starting torque of reduction drive gear, using spring force gauge, attach cord at groove of outer race. If starting torque is out of specification, replace reduction drive gear assembly.
Starting torque of reduction drive gear
0.3 - 0.8 N.m (0.03 - 0.08 kgf-m, 0.22 - 0.58 lb-ft)
