Suzuki 2006 SX4, Service Manual

Page: 835 / 1478

Power Assisted Steering System: 6C-33
NOTE
*: The voltage of this circuit may not be checked by voltmeter. If so, use oscilloscope.
Reference waveform No.1
Motor output signal 1(1), Motor output signal 2(2), with
engine idling
E11-20 RED
Reference sensor power supply
for torque sensor
About 3.0 – 3.5 V
• Ignition switch ON
• Check voltage between “E11-20” and
“E11-9” terminals
E12-1 BLK Motor output 1
*0 – 1 V
↑↓
10 – 14 V
(“Reference
waveform No.1: ”,
“Reference
waveform No.2: ”
and “Reference
waveform No.3: ”)
• Engine idling and steering wheel at
straight position
• Voltage between “E12-1” and vehicle
body ground
E12-2 RED Motor output 2
*0 – 1 V
↑↓
10 – 14 V
(“Reference
waveform No.1: ”,
“Reference
waveform No.2: ”
and “Reference
waveform No.3: ”)
• Engine idling and steering wheel at
straight position
• Voltage between “E12-2” and vehicle
body ground
E13-1 GRN
Main power supply for internal
memory and P/S motor
10 – 14 V —
E13-2 BLK Ground for P/S control module Below 0.3 V —
Terminal Wire color Circuit Normal voltage Condition
Measurement
terminal CH1: “E12-1” to vehicle body ground
CH1: “E12-2” to vehicle body ground
Oscilloscope
setting CH1: 5 V/DIV, CH2: 5 V/DIV
TIME: 20
µ
s/DIV
Measurement
condition • Engine is idling and steering
wheel at straight position
I6RS0B630017-01