2005 SUZUKI SWIFT radio circuit

Downloaded from www.Manualslib.com manuals search engine Engine General Information and Diagnosis: 1A-143
DTC P1510: ECM Back-Up Power Supply MalfunctionS7RS0B1104060
Wiring Diagram
Circuit Description
Battery voltage is supplied so that DTC memory, values for engine control learned by ECM, etc. are kept in ECM even
when the ignition switch is turned OFF.
DTC Detecting Condition and Trouble Area
DTC Confirmation Procedure
1) Connect scan tool to DLC with ignition switch turned OFF.
2) Turn ON ignition switch and clear DTC using scan tool and run engine at idle speed for 1 min.
3) 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
WHT/REDWHT80A
50A
3
2 1
E23-2
I4RS0A110051-01
1. ECM
2. “RADIO” fuse 3. Main fuse box
DTC detecting condition Trouble area
Back-up power circuit voltage is less than 70% battery voltage for
5 seconds continuously while engine is running.
(1 driving cycle detection logic) Battery voltage supply circuit

Downloaded from www.Manualslib.com manuals search engine 1A-144 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 P1603: TCM Trouble Code DetectedS7RS0B1104061
Wiring Diagram
DTC Detecting Condition
When ECM receives a trouble code from TCM, which indicates that some problem occurred in sensor circuits and its
calculated values used for operations such as idle speed control, engine power control, and so on by TCM, ECM sets
DTC P1603. (TCM outputs the trouble code to ECM when TCM can not compute the engine control signal due to
malfunctions of sensor circuits used for gear shift control.) 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 Battery voltage supply circuit check
1) Turn OFF ignition switch.
2) Remove ECM from its br acket with ECM connectors
connected.
3) With engine running, measure voltage between “E23-2” terminal of ECM connector and engine ground.
Is voltage 10 – 14 V? Poor “E23-2”
connection or
intermittent trouble.
Check for intermittent
referring to “Intermittent
and Poor Connection
Inspection in Section
00”.
If wire and connections
are OK, substitute a
known-good ECM and
recheck.“RADIO” fuse blown,
“WHT” or “WHT/RED”
wire is circuit open or
short circuit.
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
RED
WHT
C37-13
C37-12
RED
WHTC34-7
C34-17
2
I6RS0C110026-01
1. ECM
2. TCM (for A/T model)

Downloaded from www.Manualslib.com manuals search engine 1A-194 Engine General Information and Diagnosis:
ECM Power and Ground Circuit CheckS7RS0B1104080
Wiring DiagramC37-3 to E23-1/16 EGR valve
(stepping motor No.2 coil)
20 – 31 Ω —
C37-18 to E23-1/16 EGR valv e (stepping motor No.4 coil)
C37-19 to E23-1/16 EGR valv e (stepping motor No.3 coil)
C37-46 to E23-29 Heater of HO2S-1 2 – 11 Ω—
C37-1 to E23-1/16 No.1 fuel injector 10.8 – 18.2 Ω —
E23-47 to E23-1/16 A/C compressor relay 160 – 240 Ω —
C37-60 to C37-59 Oil control valve 6 – 15 Ω —
E23-45 to E23-1/16 Throttle actuator control relay 160 – 240 Ω —
Terminals
CircuitStandard resistance Condition
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
BLK/RED
BLK/REDBLK/RED
BLK/YELBLK/YEL
BLK/YEL
GRN
BRN/WHT
12V
5VE23-1
E23-60
E23-16
WHT 2
4
11
6
3
12
13 14
7
1
16
17
89
15
10
5
WHT/REDE23-2
C37-58
C37-15C37-30
BLK/ORN
BLKBLKE23-31BLK
WHT
GRY/REDRED/BLK
ORN
C37-14C37-53
C37-55E23-54
REDE23-55
GRNBRN
BLU
REDYELWHT
E23-35E23-37E23-52
E23-51
E23-34E23-36
E23-50
LT GRN/REDLT GRN/BLKC37-45C37-44
C37-43
C37-54C37-40C37-42C37-41
RED
GRN
WHTBLK
ORN
BLK/WHTE23-29
I6RS0C110039-01
1. Main fuse box 7. Individual circuit fuse box No.1 13. A/C refrigerant pressure sensor (if equipped with A/C)
2. Ignition switch 8. “IG ACC” fuse14. APP sensor (main)
3. Main relay 9. “FI” fuse15. APP sensor (sub)
4. BCM (included in junction block assembly) 10. “RADIO” fuse 16. TP sensor (main)
5. “IG COIL” fuse 11. DLC17. TP sensor (sub)
6. ECM 12. MAP sensor

Downloaded from www.Manualslib.com manuals search engine Engine General Information and Diagnosis: 1A-195
Circuit Description
When the ignition switch is turned ON, the main relay turns ON (the contact point closes) and the main power is
supplied to ECM.
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 referri ng to “Inspection of ECM and Its Circuits”.

StepAction YesNo
1 Circuit fuse check
1) Disconnect connectors from ECM with ignition switch
turned OFF.
2) Check for proper connection to ECM connector at “E23- 2”, “E23-29”, “E23-60”, “E23-1”, “E23-16”, “E23-31”,
“C37-58”, “C37-15” and “C37-30” terminals.
3) If OK, check “RADIO” fuse and “IG COIL” fuse for blowing.
Are “RADIO” fuse and “IG COIL” fuse in good condition? Go to Step 2.
Replace fuse (s) and
check for short in
circuits connected to
fuse(s).
2 Power supply circuit check
1) Measure voltage between “E23-2” terminal of ECM
connector and body ground.
Is voltage 10 – 14 V? Go to Step 3.
“WHT/RED” or “WHT”
wire is open circuit.
3 Ignition signal check
1) Turn ignition switch to ON position.
2) Measure voltage between “E23-29” terminal of ECM
connector and body ground.
Is voltage 10 – 14 V? Go to Step 4.
“BLK/WHT” or “GRN”
wire is open circuit.
4 Main relay circuit check
1) Turn ignition switch to OFF position.
2) Check “FI” fuse (1) in indivi dual circuit fuse box No.1 for
blowing.
3) If OK, measure voltage between “E23-60” terminal of ECM connector and body ground.
Is voltage 10 – 14 V? Go to Step 5.
Go to Step 9.
1
I4RS0A110016-01

Downloaded from www.Manualslib.com manuals search engine Wiring Systems: 9A-36
15 AA/BAG A/B SDM
10 A ABSABS control module
ESP
® control module
Steering angle sensor
10 A TAIL COMB switch
BLANK BLANK BLANK 20 A D/L BCM
10 A DIESEL/HID L BLANK
10 A ST SIG Starting motor relay
15 A SEAT HTR Seat heater switch (Driver side)
Seat heater switch (Passenger side)
10 A IG2 SIG Blower motor relay
15 A DEICER/RR FOG COMB switch
15 A RADIO Audio
Auto A/C unit
BCM
COMB meter
DLC
ECM
Interior light
Luggage compartment light
Main switch (Key switch)
Multi information display
KLS ECM
Steering angle sensor
TCM
25 A RR DEF Rear defogger relay
15 A HAZ-HORN Horn relay
Flasher relay
10 A MTA/HID R BLANK
20 A P/WT BLANK
30 A P/W Front power window main switch
Front power window sub switch
Rear power window sub switch (R)
Rear power window sub switch (L)
No. Fuse Description on the cover Protected circuit

Downloaded from www.Manualslib.com manuals search engine Wiring Systems: 9A-42
E39 E41E40
BCM G34G33G32 K01 L04 L05 L06J/B
7
17
8
5
4
14
2
23
1
6
3
(Continued)
DEF LP
RR DEF
RR DEF
CONTROL
RR-DEF RLY
EPI
A/C PANEL
LUGGAGE LAMP
BCM
DOME LP POWER
RR FOG SW
DEICER LP
DEICER
DEICER
CONTROL
DEICER
RLY
D/SL
D/SL-IN
RR DEF
DEICER/
RR FOG
MTA/HID R
RADIO
DIESEL/HID L 20A
15A 2
41
3
10A
15A
15A
IMMOBI 10A
2
41
39
43
40
42
35
(Continued)
Individual circuit fuse box No.2 (In J/B)
1
2
3
4
Connector No. / Terminal No.
BCM (J/B side connector)
3 4
1
2 5
15
14
12
13
10
11
9
8
6
7
17
161821 22
19
20
23
1234578 11 6
12
91034 6 52
1
G33
G32
G34
10
11 12 13 14 15 16 17 18 19 123456789
20
345612K01
23414
3
561214
11
10 157
2113 16
98
6
5
4
3
2
1
7
11
10
9
8
15
14
13
12 16
L04
L06
E41
21
123456789
15 16 17 18
1110 12 13 14
1
234
5 678 910
E39
L05
E40
Except Oceania
15
7
18
10
I5RS0C910904-03

Downloaded from www.Manualslib.com manuals search engine 9A-43 Wiring Systems:
(Continued)
BCM (J/B side connector)
34
1
2 5
15
14
12
13
10
11
9
8
6
7
17
161821 22
19
20
23
1234578 11 6
12
91034 6 52
1
G33
G32
G34
10
11 12 13 14 15 16 17 18 19 123456789
20
345612K01
23414
3
561214
11
10 157
2113 16
98
6
5
4
3
2
1
7
11
10
9
8
15
14
13
12 16
L04
L06
E41
21
123456789
15 16 17 18
1110 12 13 14
1
234
5 678 910
E39
L05
E40
E39 E41E40
BCM G34G33G32K01 L04 L05 L06
9
J/B
10
11
13
12
3
1
16
1
9
1
3
16
15
5
ACC (BCM)
R/C MIR (ACC)
RADIO, CLOCK ACC SOCKET
IG2FL
R-WIP RLY R-WIP (+)F-Washer
F-WIP
COMB SW
P/W
SEAT HEATER
IG2SW
R-WIP (CONT) R-WIP (-)
ACC 1
P/W
SEAT HTR 15A
ACC 2
15A
30A
WIPER 15A
15A
(Continued)
26
27
28
45
Individual circuit fuse box No.2 (In J/B)
37
5ACC SW
4
4
3
2
1
Connector No. / Terminal No.
6
IG2
I5RS0C910965-02

Downloaded from www.Manualslib.com manuals search engine 9A-55 Wiring Systems:
A-6 A/T Control System Circuit DiagramS7RS0B910E007
GRN/YEL
Brakelight
switch
E47
GRN/YEL
C3520 8 7 19 18
9
85 3 6 2
GRN/YEL
Back-up light
20
RED
"D-8"
R
Transaxle
range sensor
TCM
L23
4
3 position switch
A/T
shift lock solenoid
A/T shift
lever assy
BLK/ORN
16
OFF ON
RED
1
RED
BLK
PNK/BLK
GRN/ORNLT GRN/BLK
C28
P
R ND 2L
PNK/BLK
1
2
E24 C36
17
PNK/BLK
BLK
63
BLK/ORN
18
BLK
14
L24
J/C
E45
L024
J/C
E43
J/C (CAN)
G16
BCM
DLC
G207
G375
E469
4
BLK
BLKBLK
11
J/C
G15
3
G36
E3814
E24
C3615
BLK/ORNBLK/ORN
5
23
GRN
RED/BLK
7
E24
C3619
E4114
RED/BLK
PNK
15A
STOP
LAMP8
GRN/WHT
GW
"D-7"
Brake light
3
4
J/B
L018
1
24
10ABACK
A
A
B
B A
A
PPL/WHT
PPL/WHT
PPL/WHT
PPL/WHT
A
A
D
E
LT GRN
P
"A-5"
VSS
PPL
25
R
C36E245
Lg
GY
PB
PW
9
A
Individual circuit
fuse box (No.1)
WHT/BLKRED/BLK
RBWB
BCM
"A-8"
14
6
BLK/ORN
15ARADIO40
G335
WHT/RED
B
B
J/C
G17
WHT/RED
16
J/C
E42
IF EQPD
E24 C36
I7RS0B910915-01