Infiniti M45 (Y34). Manual — part 796
ELECTRICALLY CONTROLLED POWER STEERING SYSTEM
STC-9
[EPS]
C
D
E
F
H
I
J
K
L
M
A
B
STC
7.
CHECK SOLENOID VALVE
1.
Check solenoid valve by listening for its operation sound while
applying battery voltage to terminals 1 (LG) and 2 (B).
2.
Check resistance value between following solenoid valve termi-
nals.
OK or NG
OK
>> GO TO 8.
NG
>> Replace solenoid valve.
8.
CHECK STEERING WHEEL TURNING FORCE
1.
Connect power steering control unit harness connector.
2.
Check steering wheel turning force. Refer to
PS-7, "CHECKING STEERING WHEEL TURNING
OK or NG
OK
>> Inspection END.
NG
>> Adjust steering gear assembly adjusting screw (
) and check pump discharge pressure (
9.
CHECK VEHICLE SPEED SIGNAL INPUT
●
With rear wheels raised, rotate them by hand.
●
Check voltage between power steering control unit harness con-
nector M108 terminals 3 (PU/W) and ground.
OK or NG
OK
>> Replace power steering control unit.
NG
>> Check the following.
●
Harness for open or short between power steering control unit and combination meter.
●
Combination meter operation. Refer to
DI-16, "Vehicle Speed Signal Inspection"
.
●
If there is non-standard condition, repair or replace it.
1 (LG) - 2 (B)
: Approx. 4 - 6
Ω
SGIA0334E
When the wheels are rotated slowly by hand:
3 (PU/W) –
Ground
: Reading fluctuates between 0V and 5V.
SGIA0335E
ELF1080D
STC-10
[EPS]
ELECTRICALLY CONTROLLED POWER STEERING SYSTEM
10.
CHECK ENGINE REVOLUTION SIGNAL
1.
When engine is running at idle, change the engine speed to
approximately 2,000 rpm.
2.
Check voltage between power steering control unit harness con-
nector M108 terminal 5 (W/G) and ground.
OK or NG
OK
>> Replace power steering control unit.
NG
>> Check the following.
●
Harness for open or short between power steering control unit and ECM
●
ECM engine revolution signal inspection. Refer to
EC-112, "SELF-DIAG RESULTS MODE"
●
If there is any non-standard condition, repair or replace it.
5 (W/G) –
Ground
Engine is running
●
Warm-up condition
●
Idle speed
Engine is running
●
Warm-up condition
●
Engine speed is
2,000 rpm
SGIA0336E
PBIA3654J
PBIA3655J
TILT & TELESCOPIC SYSTEM
STC-11
[TILT/TELESCOPIC]
C
D
E
F
H
I
J
K
L
M
A
B
STC
[TILT/TELESCOPIC]
TILT & TELESCOPIC SYSTEM
PFP:48805
System Description
AGS000EY
OPERATION
Steering wheel position can be adjusted with the steering position switch.
NOTE:
●
The steering wheel position can be manually operated with the ignition switch OFF.
Component Parts and Harness Connector Location
AGS000EZ
SGIA0428E
STC-12
[TILT/TELESCOPIC]
TILT & TELESCOPIC SYSTEM
Wiring Diagram
AGS000F0
TGWA0010E
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