Dtc C1037: Steering Angle Sensor Power Supply Failure - Suzuki Swift Sport 2004 Service & Repair Manual

Step
4 Check yaw rate / G sensor assembly power supply
circuit
1) Turn ignition switch to OFF position.
2) Disconnect ESP® control module connector.
3) Check for proper connection to ESP® control module
connector terminals at "E85-31" and "E85-37".
4) If OK, then measure voltage between connector terminal
"E85-37" and vehicle body ground.
Is it 0 V?
5 Check yaw rate / G sensor assembly power supply
circuit
1) Measure resistance between the following points.
• Between terminal "E85-37" of module connector and
terminal "E84-3" of sensor terminal.
• Between terminal "E85-31" of module connector and
terminal "E84-5" of sensor terminal.
Are resistance less than 2

DTC C1037: Steering Angle Sensor Power Supply Failure

Wiring Diagram
WHT
3
WHT
GRN
2
GRN/ORN
1
WHT/RED
G50-3
G50-1
[A]: ESP® control module connector (viewed from
terminal side)
[B]: Steering angle sensor connector (viewed from
harness side)
[C]: BCM connector (viewed from harness side)
1. Battery
2. Main fuse box
DTC Detecting Condition and Trouble Area
DTC Detecting Condition
Power supply voltage to steering angle sensor is too low. • Steering angle sensor power supply circuit
Action
Ω
?
4
5
E46-1
RED E85-13
6
E46-2 WHT
E85-44
G37-4 RED
WHT
G37-2
9
7
WHT
G50-10
6
RED
G50-9
G50-2 BLK/ORN
3. Ignition switch
4. Junction block assembly
5. BCM (included in junction block
assembly)
6. CAN driver
7. Steering angle sensor
Electronic Stability Program:
Yes
Go to Step 5.
Substitute a known-
good ESP® hydraulic
unit / control module
assembly recheck.
8
6
[B]
G50
10 9 3 2 1
10
[C]
E46
7 6 5 4 3 2 1
14 13 12 11 10 9 8
8. ESP® hydraulic unit control module assembly
9. Junction connector
10. To Combination meter and keyless start control
module
• Steering angle sensor
• ESP® control module
No
"BLU/RED" wire circuit
is shorted to power
circuit.
"BLU/RED" and/or
"GRN/BLK" wire circuit
open or high resistance.
S7RS0B4604033
[A]
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
G37
11 10 9 8 7 6 5 4 3 2 1
22 21 20 19 18 17 16 15 14 13 12
Trouble Area
4F-37
E85
1
17
2
18
3
19
4
20
5
21
6
22
7
23
8
24
9
25
10
26
11
27
12
28
13
29
14
30
15
31
16
I6RS0B460020-01