check engine SUZUKI SX4 2006 1.G Service Workshop Manual

Downloaded from www.Manualslib.com manuals search engine 5A-64 Automatic Transmission/Transaxle:
DTC P0973 / P0976: Shift Solenoid-A (No.1) Control Circuit Low / Shift Solenoid-B (No.2) Control
Circuit Low
S6RW0D5104032
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 ignition 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 speed and stop vehicle.
6) Check DTC.
12V
12VBRNC06-16
C06-15BLK/YEL
41
2
3
16 15
C06C07
[A]
I6RW0B510014-01
1. TCM 3. Shift solenoid valve-B (No.2)
2. Shift solenoid valve-A (No.1) [A]: Terminal arrangement of TCM connector (Viewed from harness side)
DTC detecting condition Trouble area
Voltage of shift solenoid valve 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

Downloaded from www.Manualslib.com manuals search engine Automatic Transmission/Transaxle: 5A-65
DTC Troubleshooting
Step Action Yes No
1Was “A/T System Check” performed?Go to Step 2. Go to “A/T System
Check”.
2Check shift solenoid valve resistance
1) Turn ignition switch OFF.
2) Disconnect valve body harness connector (1), (2) on
automatic transmission.
3) Check for proper connection to solenoid at “BRN” (for
shift solenoid valve-A (No.1)) or “BLK/YEL” (for shift
solenoid valve-B (No.2)) circuit.
Check resistance of solenoid valve.
Shift solenoid valve resistance
Between shift solenoid valve-A (No.1) terminal (3)
and transaxle: 11 – 15 Ω at 20 °C (68 °F)
Between shift solenoid valve-B (No.2) terminal (4)
and transaxle: 11 – 15 Ω at 20 °C (68 °F)
Is check results satisfactory?Go to Step 3. Replace applicable shift
solenoid valve or valve
body harness.
3Check shift solenoid valve circuit for ground short
1) Disconnect TCM connectors.
2) Check for proper connection to TCM at terminals “C06-
16” (for shift solenoid valve-A (No.1)) or “C06-15” (for
shift solenoid valve-B (No.2)).
3) If connection is OK, check continuity between terminal
“C06-16” (for shift solenoid valve-A (No.1)) or “C06-15”
(for shift solenoid valve-B (No.2)) of disconnected
harness side TCM connector and ground.
Is continuity indicated?DTC P0973: “BRN”
circuit shorted to
ground.
DTC P0976: “BLK/YEL”
circuit shorted to
ground.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.
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I5RW0C510020-01

Downloaded from www.Manualslib.com manuals search engine 5A-66 Automatic Transmission/Transaxle:
DTC P0974 / P0977: Shift Solenoid-A (No.1) / Shift Solenoid-B (No.2) Control Circuit HighS6RW0D5104033
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 ignition 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 speed and stop vehicle.
6) Check DTC.
1. TCM 3. Shift solenoid valve-B (No.2) [A]: Terminal arrangement 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
12VBRNC06-16
C06-15BLK/YEL
41
2
3
16 15
C06C07
[A]
I6RW0B510014-01

Downloaded from www.Manualslib.com manuals search engine Automatic Transmission/Transaxle: 5A-67
DTC Troubleshooting
Step Action Yes No
1Was “A/T System Check” performed?Go to Step 2. Go to “A/T System
Check”.
2Check shift solenoid valve circuit for IG short
1) Connect valve body harness connector.
2) Disconnect TCM connectors.
3) Check for proper connection to TCM at terminal “C06-
16” (for shift solenoid valve-A (No.1)) or “C06-15” (for
shift solenoid valve-B (No.2)).
4) If connection is OK, turn ignition switch ON and measure
voltage between terminal “C06-16” (for shift solenoid
valve-A (No.1)) or “C06-15” (for shift solenoid valve-B
(No.2)) of disconnected harness side TCM connector
and ground.
Is it 0 – 2 V?Go to Step 3. DTC P0974: “BRN”
circuit shorted to power
circuit.
DTC P0977: “BLK/YEL”
circuit shorted to power
circuit.
3Check shift solenoid valve resistance
1) Turn ignition switch OFF.
2) Disconnect valve body harness connector (1), (2) on
automatic transaxle.
3) Check for proper connection to solenoid at “BRN” (for
shift solenoid valve-A (No.1)) or “BLK/YEL” (for shift
solenoid valve-B (No.2)) circuit.
Check resistance of solenoid valve.
Shift solenoid valve resistance
Between shift solenoid valve-A (No.1) terminal (3)
and transaxle: 11 – 15 Ω at 20 °C (68 °F)
Between shift solenoid valve-B (No.2) terminal (4)
and transaxle: 11 – 15 Ω at 20 °C (68 °F)
Is check results 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 applicable shift
solenoid valve or valve
body harness.
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6 7 8 9
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1
I5RW0C510020-01

Downloaded from www.Manualslib.com manuals search engine 5A-68 Automatic Transmission/Transaxle:
DTC P1702: Internal Control Module Memory Check Sum ErrorS6RW0D5104034
DTC Detecting Condition and Trouble Area
DTC Confirmation Procedure
1) Connect scan tool to DLC with ignition switch OFF.
2) Clear DTC in TCM memory.
3) After 10 seconds passed from turning ignition switch ON, check DTC.
DTC Troubleshooting
DTC P1723: Range Select Switch MalfunctionS6RW0D5104036
Wiring Diagram
DTC Detecting Condition and Trouble Area
DTC Confirmation Procedure
1) Connect scan tool to DLC with ignition switch OFF.
2) Clear DTCs in TCM and ECM memories by using scan tool and turn ignition switch ON.
3) Shift select lever to each of “L”, “2”, “3”, “D”, “N”, “R” and “P” ranges for 20 seconds each.
4) Check DTC, pending DTC and freeze-frame data.DTC detecting condition Trouble area
Calculation of current data stored in TCM is not correct
comparing with pre-stored checking data in TCM.TCM
Step Action Yes No
1Is DTC P1702 detected after performing “DTC Confirmation
Procedure”?Faulty TCM.
Replace TCM.Could be a temporary
malfunction of TCM.
1. “3” position switch 2. TCM [A]: TCM connector (viewed from harness side)
DTC detecting condition Trouble area
“3” position switch ON signal is inputted although
transmission range switch signal is inputted P, R, N or L.
range.• “3” position switch or its circuit malfunction
•TCM
C06
9 C07
[A]
12V
C07-9YEL
12
I6RW0B510015-01

Downloaded from www.Manualslib.com manuals search engine Automatic Transmission/Transaxle: 5A-69
DTC Troubleshooting
DTC P1878: Torque Converter Clutch ShudderS6RW0D5104041
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 controlled 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 TroubleshootingStep Action Yes No
1Was “A/T System Check” performed?Go to Step 2. Go to “A/T System
Check”.
2“3” position switch circuit for operation
1) Connect SUZUKI scan tool to DLC with ignition switch
OFF.
2) Turn ignition switch ON and check “3” position switch
signal on scan tool data display when shifting select
lever to each range.
Does indicate “3” position switch condition OFF when
shifting select lever to “P”, “R”, “N” and “L” range?Substitute a known-
good TCM and recheck.Go to Step 3.
3“3” position switch signal inspection
With ignition switch ON, check voltage between “C07-9”
terminal of TCM coupler and ground.
“3” position switch specifications
Shift select lever to “3” or “2” range: Battery voltage
Shift select lever to other above range: 0 V
Is the result as specified?Substitute a known-
good BCM and recheck.Go to Step 4.
4Check “3” position switch operation
Is it in good condition?“YEL” wire shorted to
ground.Replace “3” position
switch.
DTC detecting condition Trouble area
The acceleration slip control function stops when the variation in the
output revolution speed of the specified amplitude and specified cycle
is detected within a specified period of time. When the specified
variation is not detected after the acceleration slip control stops.•Mismatching ATF
• Torque converter clutch malfunction
• Valve body
Step Action Yes No
1Was “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.

Downloaded from www.Manualslib.com manuals search engine 5A-70 Automatic Transmission/Transaxle:
DTC P2762: Torque Converter Clutch (TCC) Pressure Control Solenoid Control Circuit Range /
Performance
S6RW0D5104050
Wiring Diagram
DTC Detecting Condition and Trouble Area
DTC Confirmation Procedure
1) Connect scan tool to DLC with ignition switch OFF, if available.
2) Clear DTC in TCM memory.
3) Start engine.
4) Keep engine running at idle speed for 30 seconds or more.
5) Stop vehicle and check DTC.
12V
C06-5
C06-3
WHT/BLU
WHT/BLK
3
1
2
53
C06C07
[A]
I6RW0D510007-01
1. TCM 3. A/T
2. TCC solenoid valve [A]: Terminal arrangement of TCM connector (viewed from harness side)
DTC detecting condition Trouble area
Difference between actual current of TCC solenoid valve
circuit and current of TCC solenoid valve circuit calculated by
ECM is more than specification.• TCC solenoid valve or its circuit malfunction
•TCM

Downloaded from www.Manualslib.com manuals search engine Automatic Transmission/Transaxle: 5A-71
DTC Troubleshooting
Step Action Yes No
1Was “A/T System Check” performed?Go to Step 2. Go to “A/T System
Check”.
2Check TCC solenoid valve resistance
1) Turn ignition switch OFF.
2) Disconnect valve body harness connector (1), (2) on
automatic transaxle.
3) Check for proper connection to terminal at “WHT/BLU”
and “WHT/BLK” circuit.
4) Check resistance of TCC solenoid valve.
TCC solenoid valve resistance
Between terminals of transaxle side valve body
harness connector: 5.0 – 5.6 Ω at 20 °C (68 °F)
Between terminals of transaxle valve body harness
connector and transaxle: Infinity
Is check results satisfactory?Go to Step 3. Replace TCC solenoid
valve or valve body
harness.
3Check for pressure control solenoid valve circuit
1) Disconnect TCM connectors
2) Check for proper connection to TCM at terminals “C06-
3” and “C06-5”. If connection is OK, check circuit for
open, short and high resistance for the following circuit.
• Between “C06-3” terminal of TCM connector and
“WHT/BLK” terminal of valve body harness connector.
• Between “C06-4” terminal of TCM connector and
“WHT/BLU” terminal of valve body harness connector.
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.Repair “WHT/BLU” and/
or “WHT/BLK” circuit.
1
6 7 8 9
1054
32
2
1
I5RW0C510023-01

Downloaded from www.Manualslib.com manuals search engine 5A-72 Automatic Transmission/Transaxle:
DTC P2763: Torque Converter Clutch (TCC) Pressure Control Solenoid Control Circuit HighS6RW0D5104042
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 ignition switch OFF, if available.
2) Clear DTC in TCM memory.
3) Start engine.
4) Keep engine running at idle speed in “P” range for 10 seconds or more.
5) Check DTC.
12V
C06-5
C06-3
WHT/BLU
WHT/BLK
3
1
2
53
C06C07
[A]
I6RW0D510007-01
1. TCM 3. A/T
2. TCC solenoid valve [A]: Terminal arrangement of TCM connector (viewed from harness side)
DTC detecting condition Trouble area
Voltage of TCC solenoid valve TCM terminal is high although
TCM is commanding TCC solenoid valve to turn OFF.• TCC solenoid valve circuit shorted to ground
• Malfunction of TCC solenoid valve
•TCM

Downloaded from www.Manualslib.com manuals search engine Automatic Transmission/Transaxle: 5A-73
DTC Troubleshooting
Step Action Yes No
1Was “A/T System Check” performed?Go to Step 2. Go to “A/T System
Check”.
2Check TCC solenoid valve circuit for IG short
1) Connect valve body harness connector.
2) Disconnect TCM connectors.
3) Check for proper connection to TCM at terminal “C06-3”
and “C06-5”.
4) If connection is OK, turn ignition switch ON and measure
voltage between terminal “C06-3” of disconnected
harness side TCM connector and ground between
terminal “C06-5” of disconnected harness side TCM
connector and ground.
Are voltage 1 V or less?Go to Step 3. “WHT/BLU” or “WHT/
BLK” circuit shorted to
power circuit.
3Check TCC solenoid valve resistance
1) Turn ignition switch OFF.
2) Disconnect valve body harness connector (1), (2) on
automatic transaxle.
3) Check for proper connection to solenoid at “WHT/BLU”
and “WHT/BLK” circuits.
4) Check resistance of TCC solenoid valve.
TCC solenoid valve resistance
Between terminals of transaxle side valve body
harness connector: 5.0 – 5.6 Ω at 20 °C (68 °F)
Between terminals of transaxle side valve body
harness connector and transaxle: Infinity
Is check results 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 TCC solenoid
valve or lead wire.
1
6 7 8 9
1054
32
2
1
I5RW0C510023-01