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P/S Motor And Its Circuit Inspection - Suzuki SX4 Service Manual

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P/S Motor and Its Circuit Inspection

1) Check motor circuit referring to Step 2 to 3 of "DTC
C1141 / C1142 / C1143 / C1145: Motor Circuit
Failure". If check result is not satisfactory, repair
motor circuit.
2) Disconnect motor connector from steering gear case
assembly with ignition switch turned OFF.
3) Check for resistance between terminals of motor
connector.
If check result is not as specified, check P/S motor
harness for continuity. If it is OK, replace steering
gear case assembly.
Motor circuit resistance
"E12-1" and "E12-2" (For motor)
4) Check for insulation between each terminal of motor
connector and body ground.
If check result is not as specified, check P/S motor
harness for insulation. If it is OK, replace steering
gear case assembly.
Motor circuit resistance
Each terminal and body ground
[A]: Motor connector "E12" (viewed from harness side)
5) Hoist vehicle
6) Check that steering wheel turns to left and right
smoothly. If steering wheel does not turn smoothly,
inspect and repair defective steering and suspension
parts.
7) Connect "E12" connector with ignition switch turned
OFF.
S7RW0A6306013
Approx. 1 Ω
No continuity
1
2
[A]
I6RW0C630012-02
Power Assisted Steering System:
8) Using ammeter (2), check that P/S motor current (1)
is as following table with idling engine. If check result
is not satisfactory, check P/S control module for
torque sensor signal and P/S motor output referring
to "Inspection of P/S Control Module and Its
Circuits". If they are OK, replace steering gear case
assembly.
NOTE
When P/S motor is cold condition (that is,
armature coil of P/S motor is not heated),
motor current in the following table can be
measured
Motor current at hoisted vehicle (reference
value)
When
steering
Condition
wheel is left
at straight
position: [A]
Motor
Approx. 0 A Approx. 0 – 5 A
current
[B]
3
1
E12-1
E12-2
3. P/S control module
6C-43
When
When steering
steering
wheel is turned
wheel is
left or right by
kept fully
turning speed
turned left
with 90° /sec:
or right
[B]
until it
stops.: [C]
Approx.
45 – 60 A
[A]
[B]
[C]
2
I7RW01632012-01

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