Dtc C1153: P/S Control Module Power Supply Circuit Voltage Low - Suzuki Swift Sport 2004 Service & Repair Manual

6C-32 Power Assisted Steering System:

DTC C1153: P/S Control Module Power Supply Circuit Voltage Low

Wiring Diagram
6
4
BLK
4
WHY
1
4
[A]: Connector "E52" (viewed from harness side)
[B]: Connector "E49" (viewed from harness side)
1. Main fuse box
DTC Detecting Condition and Trouble Area
DTC detecting condition
Power supply voltage of P/S control module is less than 9
V for 5 seconds continuously
(1 driving cycle detection logic)
DTC Troubleshooting
Step
1 Was "EPS System Check" performed?
2 Battery voltage check
1) Check circuit fuse for P/S control module.
2) If OK, measure voltage between positive battery terminal
and vehicle body ground with engine running.
Is voltage 10 V or more?
3 P/S control module power supply circuit check
1) Check power supply circuit and ground circuit for P/S
control module referring to "P/S Control Module Power
Supply and Ground Circuit Check".
Is check result in good condition?
GRN
2
3
4
LT GRN
GRN
WHT
/BLK
BLK
[A ]
11 12 13 14 15 16 17 18 19 20
1 2 3 4
2. Ignition switch
3. Junction block assembly
4. Fuse
Action
5
12V
E49-1
E52-1
E49-2
[B ]
5 6 7 8 9 10
• P/S control module power supply circuit
• Undercharged Battery
• P/S control module
Go to Step 2.
Go to Step 3.
Substitute a known-
good P/S control
module and recheck.
BLK
E51-1
M
RED
E51-2
1
2
5. P/S control module
6. Individual circuit fuse box No.1
Trouble area
Yes
Go to "EPS System
Check".
Check charging system
referring to "Generator
Test (Undercharged
Battery Check) in
Section 1J".
Repair defective circuit.
S7RS0B6304020
I7RS0B630011-01
No