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Torque Sensor And Its Circuit Inspection - Suzuki SX4 Service Manual

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6C-42 Power Assisted Steering System:

Torque Sensor and Its Circuit Inspection

1) Check that torque sensor circuit is in good condition
referring to Step 2 to 3 of "DTC C1111 / C1113 /
C1115: Torque Sensor Circuit Failure". If check result
is not satisfactory, repair torque sensor circuit.
2) Remove console box.
3) With ignition switch turned OFF, connect scan tool to
DLC or connect voltage tester between "E11-18" –
"E11-9" (main sensor) or "E11-10" – "E11-9" (sub
sensor) with connected connector to P/S control
module.
[A]
E11
[B]
E11
[A]: Main sensor
4) Set torque wrench to steering wheel referring to
"Steering Force Check" for checking steering force.
S7RW0A6306012
18
18
9
10
9
I7RW01632021-01
[B]: Sub sensor
I3RM0A630022-01
5) Turn ON ignition switch without engine running and
select scan tool "Data List" mode due to checking
"Sensor (Main) Torque" and "Sensor (Sub) Torque"
displayed on scan tool when steering wheel turned
left and right (if used).
6) Check that characteristic of torque sensor (main and
sub) output voltage or scan tool data and steering
force is as following graph when steering wheel is
turned left and right. If sensor voltage or scan tool
data is out of specified value or does not vary linearly
as the following graph, check EPS control module
and its circuit referring to "Inspection of P/S Control
Module and Its Circuits".
If they are OK, replace steering gear case assembly.
[A]
[F]
[V]
-12.0
5
(3.7 - 4.0)
3.0 - 3.4
0
2.33 - 2.68
1.65 - 1.9
(1.0 - 1.3)
0
11.5
11.76
6
[C]
MAX
[B]
[G]
[V]
11.5
5
(3.7 - 4.0)
3.0 - 3.4
2.33 - 2.68
0
1.65 - 1.9
(1.0 - 1.3)
0
-12.0
11.76
6
[C]
MAX
[A]: Main sensor
[B]: Sub sensor
[C]: Steering force at left turn
[D]: Steering force at right turn
[E]: Steering wheel at free
[F]: "Sensor (Main) Torque" in "Data List" displayed on scan tool
[G]: "Sensor (Sub) Torque" in "Data List" displayed on scan tool
0
6
11.76
[N.m]
[D]
[E]
MAX
0
6
11.76
[N.m]
[D]
[E]
MAX
I7RW01632011-02

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