Serial Data Link Circuit Check - Suzuki Swift Sport 2004 Service & Repair Manual

Condition
Vehicle pulls to one side
during straight driving
Poor recovery after turns Poor performance of torque sensor
Abnormal noise
No idle up

Serial Data Link Circuit Check

CAUTION
!
Be sure to perform "EPS System Check" before starting "Troubleshooting".
Wiring Diagram
10
4
BLK
4
WHT
WHY
1
4
[A ]
11 12 13 14 15 16 17 18 19 20
1 2 3 4 5
[A]: Connector "E52" (viewed from harness side)
[B]: Connector "E49" (viewed from harness side)
[C]: Connector "G28" (viewed from harness side)
1. Main fuse box
2. Ignition switch
Possible cause
Poor performance of torque sensor
Steering gear case assembly faulty
Steering column faulty
P/S motor (built in steering gear case
assembly) malfunction
P/S control module faulty
GRN
2
3
4
LT GRN
GRN
/BLK
4
BLK
RED/BLK
5
6
GRY
G28-31 G28-25
[B ]
6 7 8 9 10
3. Junction block assembly
4. Fuse
5. Combination meter
6. "EPS" warning light
7. Date link connector (DLC)
Power Assisted Steering System:
Check torque sensor referring to "Torque
Sensor and Its Circuit Inspection".
Replace.
Check torque sensor referring to "Torque
Sensor and Its Circuit Inspection".
Replace.
Replace steering gear case assembly.
Check P/S control module referring to
"Inspection of P/S Control Module and Its
Circuits".
8
12V
E49-1
E52-1
E49-2
E52-5
[C]
1
16 15 14 13 12 11
2
32 31 30 29 28 27
8. P/S control module
9. To ECM, BCM, Air bag SDM control module and ABS control
module assembly
10. Individual circuit fuse box No.1
11. Serial data circuit
Correction / Reference Item
BLK
E51-1
M
RED
E51-2
7
11
E52-11 PPL/WHT
9
10 9 8 7 6 5 4 3 2 1
26 25 24 23 22 21 20 19 18 17
6C-13
S7RS0B6304009
I7RS0B630003-01