2008 SUZUKI SWIFT individual circuit fuse box

Downloaded from www.Manualslib.com manuals search engine Engine General Information and Diagnosis: 1A-125
DTC Detecting Condition and Trouble Area
DTC Confirmation Procedure1) Turn OFF ignition switch.
2) Clear DTC with ignition switch turned ON.
3) Run engine at idle speed.
4) Check DTC.
DTC Troubleshooting
NOTE
• When measuring circuit voltage, resistance and/ or pulse signal at ECM connector, connect the
special tool to ECM and/or the ECM connectors re ferring to “Inspection of ECM and Its Circuits”.
• Upon completion of inspection and repair work, perform “DTC Confirmation Procedure” and confirm that the trouble has been corrected.

DTC detecting condition Trouble area
Monitor signal of radiator cooling fan relay is different from
command signal.
(1 driving cycle detection logic) • Radiator cooling fan relay circuit malfunction
• Radiator cooling fa
n relay malfunction
• ECM malfunction
Step Action YesNo
1 Was “Engine and Emission Control System Check”
performed? Go to Step 2.
Go to “Engine and
Emission Control
System Check”.
2 Circuit fuse check
1) Check “RDTR FAN” fuse (1) in individual circuit fuse box
No.1 with ignition switch turned OFF.
Is “RDTR FAN” fuse in good condition? Go to Step 3.
Check for short in
circuits connected to
this fuse.
1
I4RS0A110022-01

Downloaded from www.Manualslib.com manuals search engine 1A-126 Engine General Information and Diagnosis:
3Wire circuit check
1) Disconnect radiator cooling fan relay No. 1 (1) from
individual circuit fuse box No .1 (2) with ignition switch
turned OFF.
2) Turn ON ignition switch, measure voltage between each engine ground to “BLK/RED” and “GRY” wire terminal.
Is voltage 10 – 14 V? Go to Step 4. Open wire in “BLK/RED”
and/or “GRY” wire are
open circuit.
4 Wire circuit check
1) Connect radiator cooling fan relay No. 1 to individual
circuit fuse box No.1 with ignition switch turned OFF.
2) Remove ECM from its br acket with ECM connectors
connected.
3) Turn ON ignition switch, ma ke sure that A/C switch is
OFF position.
4) Measure voltage between vehicle body ground and “E23-46” terminal of ECM connector when engine
coolant temp. is below 95 °C, 203 °F.
Is voltage 10 – 14 V? Go to Step 8.
Go to Step 5.
5 Wire circuit check
1) Disconnect connectors from ECM with ignition switch
turned OFF.
2) Disconnect radiator cooling fan relay No. 1 from individual circuit fuse box No.1.
3) Measure resistance between “E23-46” terminal of ECM connector and vehicle ground.
Is resistance infinity? Go to Step 6.
“LT GRN” wire is
shorted to ground
circuit.
6 Wire circuit check
1) Turn ON ignition switch.
2) Measure voltage between “E23-46” terminal of ECM
connector and vehicle body ground.
Is voltage 0 V? Go to Step 7.
“LT GRN” wire is
shorted to other circuit.
7 Radiator cooling fan relay No. 1 check
1) Check radiator cooling fan relay No. 1 referring to
“Radiator Cooling Fan Relay Inspection in Section 1F”.
Is check result satisfactory? “LT GRN” wire is open
circuit.
Replace relay.
Step
Action YesNo
1
2
I7RS0A110010-01

Downloaded from www.Manualslib.com manuals search engine Engine General Information and Diagnosis: 1A-127
8Radiator cooling fan control No. 1 check
1) Run engine until ECT is over 97.5 °C, 207.5 °F.
2) Measure voltage between vehicle body ground and “E23-46” terminal of ECM connector.
Is voltage lower than 1.5 V? Go to Step 9. Faulty ECM.
Substitute a known-
good ECM and recheck.
9 Radiator cooling fan control check
1) Disconnect radiator cooling fan relay No. 2 (2) and No. 3
(3) from individual circuit fuse box No.1 (1) with ignition
switch turned OFF.
2) Run engine until ECT is over 97.5 °C, 207.5 °F.
3) Measure voltage between vehicle body ground and each “BLU/RED” wire terminal of radiator cooling fan control
relay No. 2 and No. 3 connectors.
Is voltage 10 – 14 V? Go to Step 10. “BLU/RED” wire is open
circuit.
10 Wire circuit check
1) Disconnect connectors from ECM with ignition switch
turned OFF.
2) Connect radiator cooling fan relay No. 2 to individual circuit fuse box No.1.
3) Using service wire, ground “E23-46” and “E23-60” terminals of ECM connector.
4) Turn ON ignition switch, measure voltage between vehicle body ground and “E23-48” terminal of ECM
connector.
Is voltage 10 – 14 V? Go to Step 11. Go to Step 12.
11 Wire circuit check
1) Disconnect radiator cooling fan relay No. 2 and then
connect radiator cooling fan relay No. 3 to individual
circuit fuse box No.1 with ignition switch turned OFF.
2) Turn ON ignition switch, measure voltage between vehicle body ground and “E23-48” terminal of ECM
connector.
Is voltage 10 – 14 V? Go to Step 15. Go to Step 12.
Step Action Yes No
23
1
I7RS0A110011-01

Downloaded from www.Manualslib.com manuals search engine 1A-128 Engine General Information and Diagnosis:
DTC P0500: Vehicle Speed Sensor “A” MalfunctionS7RS0B1104051
Wiring Diagram12
Wire circuit check
1) Disconnect radiator cooling fan control relay No. 2 and
No. 3 from individual circuit fuse box No.1 with ignition
switch turned OFF.
2) Measure resistance between “E23-48” terminal of ECM connector and vehicle body ground.
Is resistance infinity? Go to Step 13. “GRN” wire is shorted to
ground circuit.
13 Wire circuit check
1) Turn ON ignition switch.
2) Measure voltage between “E23-48” terminal of ECM
connector and vehicle body ground.
Is voltage 0 V? Go to Step 14. “GRN” wire is shorted to
power supply circuit.
14 Radiator cooling fan relay No. 2 and No. 3 check
1) Check radiator cooling fan relay No. 2 and No. 3
referring to “Radiator Coolin g Fan Relay Inspection in
Section 1F”.
Are relays in good condition? “GRN” wire is open
circuit.
Replace relay.
15 Radiator cooling fan control No. 2 and No. 3 check
1) Connect connectors to ECM with ignition switch turned
OFF.
2) Connect radiator cooling fan relay No. 2 to individual circuit fuse box No.1.
3) Run engine until ECT is over 102.5 °C, 216.5 °F.
4) Measure voltage between vehicle body ground and “E23-48” terminal of ECM connector.
Is voltage lower than 1.5 V? Intermittent trouble.
Check for intermittent
refer to “Intermittent and
Poor Connection
Inspection in Section
00”.
If OK, substitute a
known-good ECM and
recheck.
Faulty ECM.
Step Action Yes No
E23
C37
34
1819
567
10
11
17
20
47 46
495051
2122
52 16
25 9
24
14
29
55
57 54 53
59
60 58 2
262728
15
30
56 4832 31
34353637
40
42 39 38
44
45 43 41 331
1213
238
34
1819
567
10
11
17
20
47 46
495051
2122
52 16
25 9
24
14
29
55
57 54 53
59
60 58 2
262728
15
30
56 4832 31
34353637
40
42 39 38
44
45 43 41 331
1213
238
E23-3E23-18REDWHTREDWHTWHT/BLKWHTBLKWHT
BLKWHTREDRED/BLK
12V
12V
3
4 21
I7RS0B110017-01
1. ECM
3. Front left side wheel speed sensor
2. ABS/ESP® control module 4. Front right side wheel speed sensor

Downloaded from www.Manualslib.com manuals search engine Engine General Information and Diagnosis: 1A-137
DTC P0620: Generator Control CircuitS7RS0B1104057
System and Wiring Diagram
Generator Control System Description
Refer to “Generator Control System Description”.3
Wire circuit check
1) Disconnect starting motor control relay in individual
circuit fuse box No.1 with ignition switch turned OFF.
2) Check for proper connection to starting motor control relay at “RED/WHT”, “RED”, “WHT”, “YEL” (for A/T
model) and “YEL/GRN” (for M/T model) wire terminals.
3) Disconnect connector from starting motor.
4) Measure voltage between “C37-48” terminal of ECM connector and vehicle body ground with ignition switch
turned ON.
Is voltage 0 – 1 V? Go to Step 4. For A/T model, “YEL” or
“YEL/GRN” wire is
shorted to power circuit.
For M/T model, “YEL/
GRN” wire is shorted to
power circuit.
If wires are OK,
substitute a known good
ECM and recheck.
4 Wire circuit check
1) Measure voltage between “RED/WHT” wire terminal of
starting motor control relay connector and vehicle body
ground with ignition switch turned ON.
Is voltage 0 – 1 V? Check starting motor
control relay. If OK,
substitute a known-
good ECM and recheck.
Faulty ignition switch,
check ignition switch
referring to “Ignition
Switch Inspection in
Section 9C”.
If ignition switch is OK,
check for short circuit
between ignition switch
and starting motor
control relay to power
circuit.
Step Action Yes No
IG
L
C
FR
E 4
2
BRN/BLKC37-8
BLU/YELC37-28
B
E23
C37
34
1819
567
1011
17
20
47 46
495051
2122
52 16
25 9
24
14
29
55
57 54 53
59
60 58 2
262728
15
30
56 4832 31
34353637
40
42 39 38
44
45 43 41 331
1213
238
34
1819
567
1011
17
20
47 46
495051
2122
52 16
25 9
24
14
29
55
57 54 53
59
60 58 2
262728
15
30
56 4832 31
34353637
40
42 39 38
44
45 43 41 331
1213
238 1
3 5
I5RS0C110013-01
1. Generator
3. Field coil 5. Ignition switch
2. IC regulator 4. ECM 6. Charge lamp

Downloaded from www.Manualslib.com manuals search engine 1A-152 Engine General Information and Diagnosis:
DTC P2101: Throttle Actuator Control Motor Circuit Range / PerformanceS7RS0B1104067
Wiring Diagram
DTC Detecting Condition and Trouble Area
DTC Confirmation Procedure1) With ignition switch turned OFF, connect scan tool.
2) Turn ON ignition switch and clear DTC using scan tool.
3) Keep the accelerator pedal at idle position for 2 seconds.
4) Keep the accelerator pedal at fully depressed position for 2 seconds.
5) Repeat Step 3) and 4) for 3 times.
6) Check DTC.
E23 C37
34
1819
567
1011
17
20
47 46
495051
2122
52 16
25 9
24
14
29
55
57 54 53
59
60 58 2
262728
15
30
56 4832 31
34353637
40
42 39 38
44
45 43 41 331
1213
238
34
1819
567
1011
17
20
47 46
495051
2122
52 16
25 9
24
14
29
55
57 54 53
59
60 58 2
262728
15
30
56 4832 31
34353637
40
42 39 38
44
45 43 41 331
1213
238
12V
5VBLK/REDBLK/RED
BLK/YEL
12BLK/YEL
BLK/YEL
BRN/WHT
E23-1
E23-60
C37-58
C37-15 C37-30
BLK/ORN
BLKBLKE23-31 BLK
BLK/RED
BLU/ORN
RED/YELYEL/BLU
LT GRN/RED
LT GRN/BLK
RED
GRN
WHT
BLK
E23-16
E23-45
E23-32
C37-45
C37-44
C37-41C37-42
C37-40
C37-54
C37-43
1-1
1-2
1-3 3
4
5
8 67
10
9
E23-29 GRNBLK/WHTWHT
BLK/RED
I6RS0C110015-01
1. Electric throttle body assembly
3. ECM 8. “IG ACC” fuse
1-1. Throttle actuator 4. Main relay9. “IG COIL” fuse
1-2. TP sensor (main) 5. Individual circuit fuse box No.1 10. Ignition switch
1-3. TP sensor (sub) 6. “TH MOT” fuse
2. Throttle actuator control relay 7. “FI” fuse
DTC detecting condition Trouble area
Monitor signal of throttle actu ator output (duty output) is
inconsistent with throttle actuator control command.
(1 driving detection logic) • Throttle actuator circuit
• Electric throttle body
•ECM

Downloaded from www.Manualslib.com manuals search engine 1A-154 Engine General Information and Diagnosis:
DTC P2102: Throttle Actuator Control Motor Circuit LowS7RS0B1104068
Wiring Diagram
Refer to “DTC P2101: Throttle Actuator Control Motor Circuit Range / Performance”.
DTC Detecting Condition and Trouble Area
DTC Confirmation Procedure 1) With ignition switch turned OFF, connect scan tool.
2) Turn ON ignition switch and clear DTC using scan tool.
3) Start engine and run it for 1 min. or more.
4) Check DTC.
DTC Troubleshooting
NOTE
• When measuring circuit voltage, resistance and/ or pulse signal at ECM connector, connect the
special tool to ECM and/or the ECM connectors re ferring to “Inspection of ECM and Its Circuits”.
• Upon completion of inspection and repair work, perform “DTC Confirmation Procedure” and confirm that the trouble has been corrected.

DTC detecting condition Trouble area
Power supply voltage of throttle actuator control circuit is
less than 5 V for specified time even if throttle actuator
control relay is turned on.
(1 driving detection logic) • Throttle actuator control relay circuit
• Throttle actuator control relay
•ECM
Step
Action YesNo
1 Was “Engine and Emission Control System Check”
performed? Go to Step 2.
Go to “Engine and
Emission Control
System Check”.
2 Throttle actuator cont rol relay circuit check
1) Remove ECM from its br acket with ECM connectors
connected.
2) Check for proper connection of ECM connector at “E23- 45” and “E23-32” terminals.
3) Turn ON ignition switch.
4) Measure voltage between “E23-32” terminal of ECM connector and engine ground.
Is voltage 10 – 14 V? Intermittent trouble.
Check for intermittent
referring to “Intermittent
and Poor Connection
Inspection in Section
00”.
Go to Step 3.
3 Is “TH MOT” fuse in god condition? Go to Step 4Replace fuse and check
for short in circuits
connected to this fuse.
4 Throttle actuator cont rol relay circuit check
1) Remove throttle actuator co ntrol relay from individual
circuit fuse box No.1 with ignition switch turned OFF.
2) Check for proper connection to throttle actuator control relay at “BLK/RED”, “YEL/BLU”, “BLU/ORN” and “RED/
YEL” wire terminals.
3) Measure voltage between engine ground and each “BLK/RED”, “YEL/BLU” wire terminal with ignition switch
turned ON.
Is each voltage 10 – 14 V? Go to Step 5.
“BLK/RED” wire and/or
“YEL/BLU” wire is open
or high resistance.

Downloaded from www.Manualslib.com manuals search engine 1A-156 Engine General Information and Diagnosis:
DTC Troubleshooting
NOTE
• When measuring circuit voltage, resistance and/or pulse signal at ECM connector, connect the
special tool to ECM and/or the ECM connectors re ferring to “Inspection of ECM and Its Circuits”.
• Upon completion of inspection and repair work, perform “DTC Confirmation Procedure” and confirm that the trouble has been corrected.

DTC P2111 / P2112: Throttle Actuator Control System - Stuck Open / ClosedS7RS0B1104070
DTC Detecting Condition and Trouble Area
DTC Confirmation Procedure
1) With ignition switch turned OFF, connect scan tool.
2) Turn ON ignition switch and clear DTC using scan tool.
3) Ignition switch turned OFF for 20 sec. or more.
4) Turn ON ignition switch and check DTC.
Step Action Yes No
1 Was “Engine and Emission Control System Check”
performed? Go to Step 2. Go to “Engine and
Emission Control
System Check”.
2 Throttle actuator cont rol relay circuit check
1) Remove throttle actuator co ntrol relay from individual
circuit fuse box No.1 with ignition switch turned OFF.
2) Check for proper connection to throttle actuator control relay “BLK/RED”, “YEL/BLU”, “BLU/ORN” and “RED/
YEL” wire terminals.
3) Turn ON ignition switch.
4) Measure voltage between engine ground and “E23-32” terminal of ECM connector.
Is voltage 0 V? Go to Step 3. “RED/YEL” wire is
shorted to other circuit.
3 Throttle actuator cont rol relay circuit check
1) Disconnect connectors from ECM with ignition switch turned OFF.
2) Measure resistance between engine ground and “E23- 45” terminal of ECM connector.
Is resistance infinity? Go to Step 4. “BLU/ORN” wire is
shorted to ground
circuit.
4 Throttle actuator control relay check
1) Check throttle actuator control relay referring to “Main Relay, Fuel Pump Relay an d Starting Motor Control
Relay Inspection in Section 1C”.
Is it in good condition? Substitute a known-
good ECM and recheck.
Replace throttle
actuator control relay.
DTC detecting condition
Trouble area
P2111:
Throttle valve default opening is greater than 6 ° from
complementary closed position when diagnosing throttle
valve at ignition switch turned OFF.
(1 driving detection logic)
P2112:
Throttle valve default opening is smaller than 6 ° from
complementary closed position when diagnosing throttle
valve at ignition switch turned OFF.
(1 driving detection logic) • Electric throttle body
•ECM