Nissan Altima L32. Instruction — part 1399
POWER STEERING CONTROL UNIT
STC-15
< ECU DIAGNOSIS >
C
D
E
F
H
I
J
K
L
M
A
B
STC
N
O
P
ECU DIAGNOSIS
POWER STEERING CONTROL UNIT
Reference Value
INFOID:0000000004205836
TERMINAL LAYOUT
PHYSICAL VALUES
JSGIA0023ZZ
Terminal No.
Wire
color
Description
Condition
Value (Approx.)
+
-
Signal name
Input/
Output
1
Ground
R/Y
Power steering so-
lenoid valve voltage
Output
Vehicle speed: 0 km/h (0 MPH)
(Engine is running)
4.4 - 6.6 V
Vehicle speed: 100 km/h (62 MPH)
2.5 - 3.7 V
3
Ground
G
Ignition power sup-
ply
Input
Ignition switch: ON
Battery voltage
Ignition switch: OFF
0 V
5
Ground
LG/W
Power steering so-
lenoid valve ground
—
Always
0 V
6
Ground
B
Ground
—
Always
0 V
8
Ground
L/B
Vehicle speed sig-
nal
Input
Vehicle speed: 40 km/h (25 MPH)
CAUTION:
Check air pressure of tire under
standard condition.
ELF1080D
STC-16
< ECU DIAGNOSIS >
POWER STEERING CONTROL UNIT
CAUTION:
When using circuit tester or oscilloscope to measure voltage for inspection, be sure not to extend forcibly any connector ter-
minals.
Wiring Diagram — ELECTRONICALLY CONTROLLED POWER STEERING SYS-
10
Ground
V/W
Engine speed sig-
nal
Input
Engine speed: At idle
(Warm-up condition)
QR25DE:
VQ35DE:
Engine speed: Approx. 2,000 rpm
(Warm-up condition)
QR25DE:
VQ35DE:
Terminal No.
Wire
color
Description
Condition
Value (Approx.)
+
-
Signal name
Input/
Output
JSGIA0144ZZ
JSGIA0143ZZ
JSGIA0145ZZ
PBIA3655J
POWER STEERING CONTROL UNIT
STC-17
< ECU DIAGNOSIS >
C
D
E
F
H
I
J
K
L
M
A
B
STC
N
O
P
TEM —
INFOID:0000000004205837
ALGWA0001GB
STC-18
< ECU DIAGNOSIS >
POWER STEERING CONTROL UNIT
ABGIA0011GB
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