Transmission level SUZUKI SWIFT 2007 2.G Service User Guide

Downloaded from www.Manualslib.com manuals search engine Automatic Transmission/Transaxle: 5A-41
No Gear Shift to 4th gearS7RS0B5104019
System Description
TCM does not shift to 4th gear under any of the following condition.
• “3” position switch is turned ON.
• Engine coolant temperature is less than 50 °C (122 °F).
• A/T fluid temperature is less than 20 °C (68 °F).
• A/T fluid temperature is more than 130 °C (266 °F) while TCM is detecting P2762, P2763 and P2764.
• TCM detects the following DTCs. P0712 / P0713 / P0717 / P0722 / P0787 / P0788 / P0961 / P0962 / P0963 / P0973 / P0974 / P0976 / P0977 / P1702
/ P1703 / P1774 / P1777
Troubleshooting
WARNING!
• When performing a road test, select a place where there is no traffic or possibility of a traffic accident and be very careful during testing to avoid occurrence of an accident.
• Road test should be carried out with 2 persons, a driver and a tester, on a level road.

Non operate TCC (lock-
up) system Faulty torque converter
Replace.
Excessive “N”
→ “D” time
lag Faulty oil pump
Inspect. If NG, replace.
Faulty forward clutch Inspect. If NG, replace.
Faulty one-way No.2 clutch Inspect. If NG, replace.
Leakage from “D” range fluid pressure
circuit Replace valve body assembly.
Excessive “N”
→ “R” time
lag Faulty oil pump
Inspect. If NG, replace.
Faulty reverse clutch Inspect. If NG, replace.
Faulty 1st and reverse brake Inspect. If NG, replace.
Leakage from “R” range fluid pressure
circuit Replace valve body assembly.
Poor engine brake in
downshift to “2” range Faulty O/D and 2nd coast brake
Inspect. If NG, replace.
Poor engine brake in
downshift to “L” range Faulty 1st and reverse brake
Inspect. If NG, replace.
Condition Possible cause Correction / Reference Item
Step
Action YesNo
1 Was “A/T System Check” performed? Go to Step 2.Go to “A/T System
Check”.
2 Check DTC
Is DTC P0712, P0713, P0717, P0722, P0961, P0962,
P0963, P0973, P0974, P0976, P0977, P1702, P1703,
P1774 and/or P1777 detected? Go to applicable DTC
diag. flow.
Go to Step 3.

Downloaded from www.Manualslib.com manuals search engine 5A-42 Automatic Transmission/Transaxle:
No Lock-Up OccursS7RS0B5104020
System Description
TCM turns TCC solenoid OFF under any of the following conditions.
• Brake light switch is turned ON (Brake pedal is depressed).
• Transmission fluid temperat ure is less than 60 °C (140 °F).
• Throttle opening is as much as 0%.
• TCM detects the following DTCs. P0705 / P0707 / P0712 / P0713 / P0717 / P0722 / P0787 / P0788 / P0961 / P0962 / P0963 / P0973 / P0974 / P0976
/ P0977 / P1702 / P1703 / P1774 / P1777 / P2762 / P2763 / P2764
Troubleshooting
WARNING!
• When performing a road test, select a place where there is no traffic or possibility of a traffic accident and be very careful during testing to avoid occurrence of an accident.
• Road test should be carried out with 2 persons, a driver and a tester, on a level road.

3 1) Perform running test under the following conditions and measure voltage between terminal “C34-16” of TCM
connector and ground, terminal “C34-15” of TCM
connector and ground.
• Engine coolant temperature is in normal operating temperature.
• Select lever is in “D” range.
• Drive vehicle with 4th gear condition referring to “Automatic Gear Shift Table”.
Voltage between TCM connector and ground
Between terminal “C34-16” of TCM connector and
ground: 0 – 1 V
Between terminal “C34-15” of TCM connector and
ground: 8 – 14 V
Do results satisfy the value? Faulty shift solenoid
valve, circuit or
transaxle.
“BRN” circuit shorted to
power circuit or open, or
“BLK/YEL” circuit
shorted to ground. If
wire is OK, go to Step 4.
4 “3” position switch signal inspection
1) With ignition switch turned ON, check voltage between
“L01-8” terminal of BCM coupler and ground.
“3” position switch signal specification
Shift select lever to “3” or “2” range: 8 – 14 V
Shift select lever to other above range: 0 – 1 V
Is result as specified? Substitute a known-
good TCM and recheck.
Faulty “3” position
switch or its circuit.
Step Action Yes No

Downloaded from www.Manualslib.com manuals search engine Automatic Transmission/Transaxle: 5A-47
DTC Confirmation Procedure
WARNING!
• When performing a road test, select a place where there is no traffic or possibility of a traffic accident and be very careful during testing to avoid occurrence of an accident.
• Road test should be carried out with 2 persons, a driver and a tester, on a level road.

1) Connect scan tool to DLC with ignition switch OFF.
2) Clear DTCs in TCM memo ry by using scan tool.
3) Start engine and shift select lever to “D” range.
4) Start vehicle and increase vehicle speed to 40 km/h (25 mile/h) or more for 1 minutes.
5) Stop vehicle and turn ignition switch OFF.
6) Repeat Step 3) to 4) one time.
7) Stop vehicle and check DTC.
DTC Troubleshooting Step Action YesNo
1 Was “A/T System Check” performed? Go to Step 2.Go to “A/T System
Check”.
2 Do you have SUZUKI scan tool? Go to Step 3.Go to Step 4.
3 Check transmission range sensor (switch) circuit for
operation
Check by using SUZUKI scan tool:
1) Connect SUZUKI scan tool to DLC with ignition switch
OFF.
2) Turn ignition switch ON and check transmission range signal (P, R, N, D, 3, 2 or L) on display when shifting
select lever to each range.
Is applicable range indicated? Intermittent trouble.
Check for intermittent
referring to “Intermittent
and Poor Connection
Inspection in Section
00”
Go to Step 5.
4 Check transmission range sensor (switch) circuit for
operation
Check by not using SUZUKI scan tool:
1) Turn ignition switch ON.
2) Check voltage at terminals “C35-1”, “C35-7”, “C35-8”,
“C35-18”, “C35-19” and “C35-20” respectively with
select lever shifted to each range.
Taking terminal “C35-19” as an example, is battery
voltage indicated only when se lect lever is shifted to “2”
range and 0 V for other ranges as shown in the following
table.
Check voltage at other terminals likewise, referring to the
following table.
Are check results satisfactory? Intermittent trouble.
Check for intermittent
referring to “Intermittent
and Poor Connection
Inspection in Section
00”.
Go to Step 5.
5 1) Check select cable for adjustment referring to “Select Cable Adjustment”.
Is it adjusted correctly? Go to Step 6.
Adjust.
6 Check transmission range sensor (switch) for
installation position
1) Shift select lever to “N” range.
2) Check that “N” reference line on sensor and needle
direction shaped on lock washer are aligned.
Are they aligned? Go to Step 7.
Adjust.

Downloaded from www.Manualslib.com manuals search engine 5A-48 Automatic Transmission/Transaxle:
Table for Step 4
DTC P0712: Transmission Fluid Temperature Sensor “A” Circuit LowS7RS0B5104025
Wiring Diagram
DTC Detecting Condition and Trouble Area
DTC Confirmation Procedure
WARNING!
• When performing a road test, select a place where there is no traffic or possibility of a traffic
accident and be very careful during testing to avoid occurrence of an accident.
• Road test should be carried out with 2 persons, a driver and a tester, on a level road.

7 1) Check transmission range sensor (switch) referring to “Transmission Range Sensor (Shift Switch) Inspection
and Adjustment”.
Are check results satisfactory? “RED/BLK”, “PNK/BLK”,
“RED”, “GRN/ORN”,
“GRN”, “GRN/YEL” or
“LT GRN/BLK” circuit
open or short to ground.
If wires and connections
are OK, substitute a
know-good TCM and
recheck.Replace transmission
range sensor.
Step Action Yes No
Terminal
C35-20 C35-1 C35-8 C35-7 C35-19 C35-18
Select lever position P8 – 14 V0 V0 V0 V0 V0 V
R 0 V 8 – 14 V 0 V 0 V 0 V 0 V
N 0 V 0 V 8 – 14 V 0 V 0 V 0 V
D or 3 0 V 0 V 0 V 8 – 14 V 0 V 0 V 20 V0 V0 V0 V8 – 14 V0 V
L0 V0 V0 V0 V0 V8 – 14 V
5V
C34-11
C34-12
LT GRN
ORN
2 3
12 11
C34C35
[A]
1
I4RS0A510011-01
1. TCM 3. A/T
2. Transmission fluid temperature sensor 4. Terminal arrangement of TCM connector (viewed from harness side)
DTC detecting condition Trouble area
Transmission temperature sensor terminal voltage is less
than specified value for 5 minutes or more after turning
ignition switch ON. • Transmission fluid temperature sensor or its circuit
malfunction
•TCM

Downloaded from www.Manualslib.com manuals search engine 5A-50 Automatic Transmission/Transaxle:
DTC Confirmation Procedure
WARNING!
• When performing a road test, select a place where there is no traffic or possibility of a traffic
accident and be very careful during testing to avoid occurrence of an accident.
• Road test should be carried out with 2 persons, a driver and a tester, on a level road.

1) Connect scan tool to DLC with ig nition switch OFF, if available.
2) Clear DTC in TCM memory and start engine.
3) Start vehicle and increase vehicle speed to about 40 km/h (25 mile/h) for 20 minutes or more.
4) Stop vehicle and check DTC.
DTC Troubleshooting Step Action Yes No 1 Was “A/T System Check” performed? Go to Step 2. Go to “A/T System
Check”.
2 Check transmission fluid temperature circuit for open
1) Turn ignition switch OFF.
2) Disconnect TCM connectors from TCM.
3) Check for proper connection to transmission fluid
temperature sensor at terminals “C34-11” and “C34-12”.
4) If OK, check continuity between terminals “C34-11” and “C34-12” of disconnected harness side TCM connector.
Is continuity indicated? Go to Step 3. “LT GRN” or “ORN”
circuit open.
3 Check transmission fluid temperature circuit for IG
short
1) Cool down A/T fluid te mperature under ambient
temperature.
2) Connect TCM connectors to TCM with ignition switch OFF.
3) Turn ignition switch ON.
4) Measure voltage between terminal “C34-11” of TCM connector and ground.
Is it 4.6 V or more? “LT GRN” circuit shorted
to power circuit.
If circuit is OK, go to
St ep 4 .
Intermittent trouble or
faulty TCM.
Check for intermittent
referring to “Intermittent
and Poor Connection
Inspection in Section
00”.
If OK, substitute a
known-good TCM and
recheck.
4 Inspect transmission fluid temperature sensor
1) Inspect transmission fluid temperature sensor referring
to “Transmission Fluid Temperature Sensor Inspection”.
Is result satisfactory? Intermittent trouble or
faulty TCM.
Check for intermittent
referring to “Intermittent
and Poor Connection
Inspection in Section
00”.
If OK, substitute a
known-good TCM and
recheck.Replace transmission
fluid temperature
sensor.

Downloaded from www.Manualslib.com manuals search engine Automatic Transmission/Transaxle: 5A-51
DTC P0717: Input / Turbine Speed Sensor “A” Circuit MalfunctionS7RS0B5104027
Wiring Diagram
DTC Detecting Condition and Trouble Area
DTC Confirmation Procedure
WARNING!
• When performing a road test, select a place where there is no traffic or possibility of a traffic accident and be very careful during testing to avoid occurrence of an accident.
• Road test should be carried out with 2 persons, a driver and a tester, on a level road.

1) Connect scan tool to DLC with ig nition switch OFF, if available.
2) Clear DTC in TCM memory and start engine.
3) Shift select lever to “D” range and drive vehicle at 50 km /h (31 mile/h) or more with 3rd gear at least for 5 minutes.
4) Stop vehicle and check DTC.
DTC Troubleshooting
1. TCM 2. Input shaft speed sensor [A]: Terminal arrangement of TCM connector (viewed from harness side)
DTC detecting condition Trouble area
No input shaft speed sensor signal is detected although
output shaft speed sens or signals are detected. • Input shaft speed sensor or its circuit malfunction
• Improper input shaft speed sensor installation
• Damaged direct clutch drum
• Foreign material attachment to sensor or drum
•TCM
C35-6
2.5VWHT
BLKC35-16
1
2
C34
16
6
C35
[A]
I4RS0A510012-01
Step
Action YesNo
1 Was “A/T System Check” performed? Go to Step 2.Go to “A/T System
Check”.
2 Check input shaft speed sensor circuit
1) Disconnect TCM connectors with ignition switch OFF.
2) Check for proper connection to input shaft speed sensor
at “C35-6” and “C35-16” terminals.
3) If OK, check resistance of sensor circuit.
Input shaft speed sensor specification
Between terminals “C35-6” and “C35-16”: 560 – 680
Ω at 20 °C (68 °F)
Between terminal “C35-6” / “C35-16” and ground: No
continuity
Are check result satisfactory? Go to Step 4. Go to Step 3.

Downloaded from www.Manualslib.com manuals search engine 5A-52 Automatic Transmission/Transaxle:
DTC P0722: Output Speed Sensor Circuit No SignalS7RS0B5104028
Wiring Diagram
DTC Detecting Condition and Trouble Area
DTC Confirmation Procedure
WARNING!
• When performing a road test, select a place where there is no traffic or possibility of a traffic
accident and be very careful during testing to avoid occurrence of an accident.
• Road test should be carried out with 2 persons, a driver and a tester, on a level road.

3 Inspect input shaft speed sensor
1) Inspect input shaft speed sensor referring to “Input Shaft
Speed Sensor Inspection”.
Is result satisfactory? “WHT” or “BLK” circuit
open or short.
Replace input shaft
speed sensor.
4 Check visually input shaft speed sensor and direct
clutch drum for the following
• No damage
• No foreign material attached
• Correct installation
Are they in good condition? Intermittent trouble or
faulty TCM.
Check for intermittent
referring to “Intermittent
and Poor Connection
Inspection in Section
00”.
If OK, substitute a
known-good TCM and
recheck.
Clean, repair or replace.
Step Action Yes No
I2RH0B510020-01
1. TCM
3. To ECM
2. Output shaft speed sensor [A]: Terminal arrangement of TCM connector (viewed from harness side)
DTC detecting condition Trouble area
No output shaft speed sensor signal is detected although
input shaft speed sensor signal s are detected while vehicle is
running at 5 km/h (3 mile/h) or more in vehicle speed with
“D”, “2” or “L” range. • Output shaft speed sensor or its circuit malfunction
• Damaged sensor gear (driven gear)
• Damaged output shaft speed sensor drive gear
•TCM
IG112V
PPLC35-25
2
C34
25
C35
[A]
1
BLK/RED
BLK/ORN
3
I4RS0B510005-01

Downloaded from www.Manualslib.com manuals search engine 5A-64 Automatic Transmission/Transaxle:
DTC P0973 / P0976: Shift Solenoid “A” Control Circuit Low / Shift Solenoid “B” Control Circuit LowS7RS0B5104033
Wiring Diagram
DTC Detecting Condition and Trouble Area
DTC Confirmation Procedure
WARNING!
• When performing a road test, select a place where there is no traffic or possibility of a traffic
accident and be very careful during testing to avoid occurrence of an accident.
• Road test should be carried out with 2 persons, a driver and tester, on a level road.

1) Connect scan tool to DLC with ig nition switch OFF, if available.
2) Clear DTC in TCM memory.
3) Start engine shift select lever to “D” range.
4) Start vehicle and increase vehicle speed until gear position reaches 3rd or 4th gear.
5) Decrease vehicle sp eed and stop vehicle.
6) Check DTC.
1. TCM 3. Shift solenoid valve-B (No.2) [A]: Terminal arr angement of TCM connector (Viewed from harness side)
2. Shift solenoid valve-A (No.1) 4. A/T
DTC detecting condition Trouble area
Voltage of shift solenoid valv e TCM terminal is low although
TCM is commanding shift solenoid to turn ON • Shift solenoid valve circuit shorted to ground
• Malfunction of shift solenoid valve
•TCM
12V
12VBRNC34-16
C34-15BLK/YEL
41
2
3
16 15
C34C35
[A]
I4RS0A510016-01

Downloaded from www.Manualslib.com manuals search engine 5A-66 Automatic Transmission/Transaxle:
DTC P0974 / P0977: Shift Solenoid “A” / Shift Solenoid “B” Control Circuit HighS7RS0B5104034
Wiring Diagram
DTC Detecting Condition and Trouble Area
DTC Confirmation Procedure
WARNING!
• When performing a road test, select a place where there is no traffic or possibility of a traffic
accident and be very careful during testing to avoid occurrence of an accident.
• Road test should be carried out with 2 persons, a driver and a tester, on a level road.

1) Connect scan tool to DLC with ig nition switch OFF, if available.
2) Clear DTC in TCM memory.
3) Start engine and shift select lever to “D” range.
4) Start vehicle and increase vehicle speed until gear position reaches 3rd or 4th gear.
5) Decrease vehicle sp eed and stop vehicle.
6) Check DTC.
1. TCM 3. Shift solenoid valve-B (No.2) [A]: Terminal arra ngement of TCM connector (viewed from harness side)
2. Shift solenoid valve-A (No.1) 4. A/T
DTC detecting condition Trouble area
Voltage of shift solenoid valve TCM terminal is high although
TCM is commanding shift solenoid to turn OFF • Shift solenoid valve circuit open or shorted to power
circuit
• Malfunction of shift solenoid valve
•TCM
12V
12VBRNC34-16
C34-15BLK/YEL
41
2
3
16 15
C34C35
[A]
I4RS0A510016-01

Downloaded from www.Manualslib.com manuals search engine Automatic Transmission/Transaxle: 5A-75
DTC P1878: Torque Converter Clutch ShudderS7RS0B5104042
DTC Detecting Condition and Trouble Area
DTC Confirmation Procedure
WARNING!
• When performing a road test, select a place where there is no traffic or possibility of a traffic accident and be very careful during testing to avoid occurrence of an accident.
• Road test should be carried out with 2 persons, a driver and tester, on a level road.

1) Connect scan tool to DLC with ignition switch OFF.
2) Clear DTCs in TCM and ECM memories by using scan tool.
3) Start engine and warm it up to normal operating temperature.
4) Drive vehicle with 3rd or 4th gear in “D” range and slip c ontrolled lock-up ON for 20 seconds or longer referring to
“Automatic Gear Shift Table”.
5) Stop vehicle.
6) Check DTC, pending DTC and freeze-frame data.
DTC Troubleshooting DTC detecting condition
Trouble area
The acceleration slip control function stops when the variation in the output
revolution speed of the specified amp litude and specified cycle is detected
within a specified period of time. When t he specified variation is not detected
after the acceleration slip control stops. • Mismatching ATF
• Torque converter clutch malfunction
• Valve body
•TCM
Step
Action YesNo
1 Was “A/T System Check” performed? Go to Step 2.Go to “A/T System
Check”.
2 Change A/T fluid referring to “A/T Fluid Change”. Check DTC after performing “DTC Confirmation Procedure”.
Is DTC P1878 still indicated? Faulty torque converter
clutch.
Replace torque
converter.System is in good
condition.