dtc check SUZUKI SWIFT 2008 2.G Service Workshop Manual

Downloaded from www.Manualslib.com manuals search engine 5A-54 Automatic Transmission/Transaxle:
DTC P0787: Shift / Timing Solenoid LowS7RS0B5104029
Wiring Diagram
DTC Detecting Condition and Trouble Area
DTC Confirmation Procedure
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 “N” range.
4) Repeat shifting select lever from “N” range to “D” range and vice versa for 3 times.
5) Check DTC.
1. TCM 3. A/T
2. Timing solenoid valve [A]: Terminal arrangement of TCM connector (viewed from harness side)
12V
C34-14BLU/BLK
31
2
14
C34C35
[A]
I4RS0A510014-01
DTC detecting condition Trouble area
Voltage of timing solenoid valve TCM terminal is low although TCM
is commanding timing sole noid valve to turn ON. • Timing solenoid valve circuit shorted to ground
• Timing solenoid valve malfunction
•TCM

Downloaded from www.Manualslib.com manuals search engine Automatic Transmission/Transaxle: 5A-55
DTC TroubleshootingStep Action Yes No 1 Was “A/T System Check” performed? Go to Step 2. Go to “A/T System
Check”.
2 Check timing solenoid valve resistance
1) Turn ignition switch OFF.
2) Disconnect valve body harness connector (1), (2) on
transaxle.
3) Check for proper connection to solenoid valve at “BLU/ BLK” circuit.
4) Check resistance of solenoid valve.
Timing solenoid valve resistance
Between terminal of transaxle side valve body
harness connector and transaxle: 11 – 15 Ω at 20 °C
(68 °F)
Is check result satisfactory? Go to Step 3. Replace timing solenoid
valve or lead wire.
3 Check timing solenoid valve circuit for ground short
1) Connect valve body harness connector.
2) Disconnect TCM connectors.
3) Measure resistance between terminal “C34-14” of
disconnected harness side TCM connector and ground.
Is it 11 – 15
Ω at 20 °C (68 °F)? 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.“WHT/GRN” circuit
shorted to ground.
1
6
7
89
10 5
43 2
1
2
I3RM0B510018-01

Downloaded from www.Manualslib.com manuals search engine 5A-56 Automatic Transmission/Transaxle:
DTC P0788: Shift / Timing Solenoid HighS7RS0B5104030
Wiring Diagram
DTC Detecting Condition and Trouble Area
DTC Confirmation Procedure
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 “N” range.
4) Repeat shifting select lever from “N” range to “D” range and vice versa for 3 times.
5) Check DTC.
DTC Troubleshooting
1. TCM 3. A/T
2. Timing solenoid valve [A]: Terminal arrangement of TCM connector (viewed from harness side)
DTC detecting condition Trouble area
Voltage of timing solenoid valve TCM terminal is high
although TCM is commanding timing solenoid valve to turn
OFF. • Timing solenoid valve circuit open or shorted to
power circuit
• Timing solenoid valve malfunction
•TCM
12V
C34-14BLU/BLK
31
2
14
C34C35
[A]
I4RS0A510014-01
Step Action YesNo
1 Was “A/T System Check” performed? Go to Step 2.Go to “A/T System
Check”.
2 Check timing solenoid valve circuit for IG short
1) Disconnect TCM connectors.
2) Turn ignition switch ON and measure voltage between
terminal “C34-14” of harness side TCM connector and
ground.
Is it 0 – 1 V? Go to Step 3.
“BLU/BLK” circuit
shorted to power circuit.
3 Check timing solenoid valve circuit for open
1) Measure resistance between terminal “C34-14” of
disconnected harness side TCM connector and ground.
Is it 11 – 15
Ω at 20 °C (68 °F)? 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.Go to Step 4.

Downloaded from www.Manualslib.com manuals search engine 5A-58 Automatic Transmission/Transaxle:
DTC P0961: Pressure Control Solenoid “A” Control Circuit Range / PerformanceS7RS0B5104049
Wiring Diagram
DTC Detecting Condition and Trouble Area
DTC Confirmation Procedure
1) Connect scan tool to DLC with ignition switch turned OFF.
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.
1. TCM 3. A/T
2. Pressure control solenoid valve [A]: Terminal arrangement of TCM connector (viewed from harness side)
DTC detecting condition Trouble area
Difference between target current of control solenoid valve
circuit and monitor current of control solenoid valve circuit
is more than specification. • Malfunction of pressure control solenoid valve or its
circuit malfunction
•TCM
12V
C34-4
C34-2
GRY
LT GRN/BLK
3
1
2
42
C34C35
[A]
I4RS0A510015-01

Downloaded from www.Manualslib.com manuals search engine Automatic Transmission/Transaxle: 5A-59
DTC TroubleshootingStep Action Yes No 1 Was “A/T System Check” performed? Go to Step 2. Go to “A/T System
Check”.
2 Check pressure control solenoid valve resistance
1) Turn ignition switch OFF position.
2) Disconnect valve body harness connector (1), (2) on
automatic transaxle.
3) Check for proper connection to terminal of valve body harness connector at “GRY” and “LT GRN/BLK” circuit.
4) Check resistance of pressure control solenoid valve.
Pressure control 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? Go to Step 3. Replace pressure
control solenoid valve or
valve body harness.
3 Check for pressure control solenoid valve circuit
1) Disconnect TCM connectors.
2) Disconnect valve body harness connector and TCM
connectors.
3) Check for proper connection to TCM at terminals “C34- 2” and “C34-4”. If connection is OK, check circuit for
open, short, and high resistance for the following circuit.
• Between “C34-2” terminal of TCM connector and “LT GRN/BLK” terminal of valve body harness connector.
• Between “C34-4” terminal of TCM connector and “GRY” 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 “LT GRN/BLK”
and/or “GRY” circuit.
1
6
7
89
10 5
43 2
1
2
I3RM0B510020-01

Downloaded from www.Manualslib.com manuals search engine 5A-60 Automatic Transmission/Transaxle:
DTC P0962: Pressure Control Solenoid “A” Control Circuit LowS7RS0B5104031
Wiring Diagram
DTC Detecting Condition and Trouble Area
DTC Confirmation Procedure
1) Connect scan tool to DLC with ig nition 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.
1. TCM 3. A/T
2. Pressure control solenoid valve [A]: Terminal arrangement of TCM connector (viewed from harness side)
DTC detecting condition Trouble area
Pressure control solenoid valv e output voltage is too low
comparing with TCM command value. • Pressure control solenoid valve circuit open or
shorted to ground
• Malfunction of pressure control solenoid valve
•TCM
12V
C34-4
C34-2
GRY
LT GRN/BLK
3
1
2
42
C34C35
[A]
I4RS0A510015-01

Downloaded from www.Manualslib.com manuals search engine Automatic Transmission/Transaxle: 5A-61
DTC TroubleshootingStep Action Yes No 1 Was “A/T System Check” performed? Go to Step 2. Go to “A/T System
Check”.
2 Check pressure control 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 “GRY” and “LT GRN/BLK” circuit.
4) Check resistance of pressure control solenoid.
Pressure control 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? Go to Step 3. Replace pressure
control solenoid valve or
valve body harness.
3 Check pressure control solenoid valve circuit for
ground short
1) Connect valve body harness connector.
2) Disconnect TCM connectors.
3) Check for proper connection to TCM at terminals “C34-
2” and “C34-4”. If connection is OK, check continuity
between terminal “C34-4” of disconnected harness side
TCM connector and ground.
Is continuity indicated? “GRY” or “LT GRN/BLK”
circuit shorted to
ground.
Go to Step 4.
1
6
7
89
10 5
43 2
1
2
I3RM0B510020-01

Downloaded from www.Manualslib.com manuals search engine 5A-62 Automatic Transmission/Transaxle:
DTC P0963: Pressure Control Solenoid “A” Control Circuit HighS7RS0B5104032
Wiring Diagram
DTC Detecting Condition and Trouble Area
DTC Confirmation Procedure
1) Connect scan tool to DLC with ig nition switch OFF, if available.
2) Clear DTC in TCM memory.
3) Start engine.
4) Keep engine running at idle speed for 10 seconds or more.
5) Check DTC. 4
Check pressure control solenoid valve circuit for open
1) Check resistance continuity between terminals “C34-2”
and “C34-4” of disconnected harness side TCM
connector.
Is it infinite? “GRY” or “LT GRN/BLK”
circuit open.
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.
Step Action Yes No
1. TCM
3. A/T
2. Pressure control solenoid valve [A]: Terminal arrangement of TCM connector (viewed from harness side)
DTC detecting condition Trouble area
Pressure control solenoid valve output voltage is too high
comparing with TCM command value. • Pressure control solenoid valve circuit shorted to
power circuit
• Pressure control solenoid valve malfunction
•TCM
12V
C34-4
C34-2
GRY
LT GRN/BLK
3
1
2
42
C34C35
[A]
I4RS0A510015-01

Downloaded from www.Manualslib.com manuals search engine Automatic Transmission/Transaxle: 5A-63
DTC TroubleshootingStep Action Yes No 1 Was “A/T System Check” performed? Go to Step 2. Go to “A/T System
Check”.
2 Check pressure control solenoid circuit for IG short
1) Connect valve body harness connector.
2) Disconnect TCM connectors.
3) Check for proper connection to TCM at terminal “C34-2”
and “C34-4”.
4) If connection is OK, turn ignition switch ON and measure voltage between terminal “C34-4” of disconnected
harness side TCM connector and ground.
Is it 0 – 2 V? Go to Step 3. “GRY” or “LT GRN/BLK”
circuit shorted to power
circuit.
3 Check pressure control 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 “GRY” and “LT GRN/BLK” circuit.
4) Check resistance of pressure control solenoid.
Pressure control 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? 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 pressure
control solenoid valve or
valve body harness.
1
6
7
89
10 5
43 2
1
2
I3RM0B510020-01

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