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Dtc C1141 / C1142 / C1143 / C1145: Motor Circuit Failure - Suzuki SX4 Service Manual

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6C-26 Power Assisted Steering System:

DTC C1141 / C1142 / C1143 / C1145: Motor Circuit Failure

DTC C1141: P/S Motor Circuit Voltage
DTC C1142: P/S Motor Circuit Range/Performance
DTC C1143: P/S Motor Circuit Current Too High
DTC C1145: P/S Motor Circuit Current Too Low
Wiring Diagram
WHT
2
1
8
4
[A]
11
12 13 14 15 16 17 18 19 20
1
[A]: P/S control module connector No.1 "E11" (viewed from harness side)
[B]: P/S control module connector No.2 "E13" (viewed from harness side)
[C]: P/S control module connector No.3 "E12" (viewed from harness side)
[D]: Motor connector "E61" (viewed from harness side)
1. Main fuse box
DTC Detecting Condition and Trouble Area
DTC detecting condition
DTC C1141:
Voltage between both motor drive circuit is more than 8.5
V or less than 0.2 V for 0.5 second continuously while
motor is not driven.
(1 driving cycle detection logic)
DTC C1142:
Measured motor drive current is more than 10 A as
compared with target motor drive current.
(1 driving cycle detection logic)
DTC C1143:
Measured motor drive current is more than 65 A.
(1 driving cycle detection logic)
DTC C1145:
Measured motor drive current is less than 2 A
continuously for more than 3 seconds even though target
motor drive current is more than 4 A.
or
Measured motor drive current is less than 0.8 A for total 1
second even though motor control duty is more than 90%
when target motor drive current is less than 8 A.
(1 driving cycle detection logic)
7
9
GRN
3
10
LT GRN/
GRN
BLK
BLK
3
6
7
2
4
5
8
9
10
5
12V
E13-1
E11-1
E13-2
[B]
[C]
1
1
2
2
2. Ignition switch
3. Junction block assembly
4. Main fuse
5. P/S control module
6. P/S motor
• P/S motor circuit
• P/S motor
• Torque sensor
• P/S control module
S7RW0A6304016
11
6
BLK
E12-1
E61-2
RED
E12-2
E61-1
7. Individual circuit fuse box No.1
8. "IGN" fuse
9. "P/S" fuse
10. "IG1 SIG" fuse
11. Motor circuit
Trouble area
I6RW0C630008-01

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