Pressure (Pb) Sensors - Honda 1986 GoldWing GL1200A Manual

CFI System
Pressure (PB) Sensors - - - - - - - - - - - - - - - - - - -
LED Inspection
Reverse the PBR and PBL sensors' couplers. It the trou-
ble indication shifts from the PBR to the PBL sensor.
replace the PBR sensor
Connect the Inspection adapter between the PB sensor
couplers and measure input voltage (see limits below).
Check for continuity between the Inspection adapter
white lead and the No. 9 (PBR) or No. 27 (PBL) ECU
coupler terminal.
ECU COUPLER
With the sensor coupler disconnected, check for no con-
tinuity between the #9/#27 terminals and body ground,
and the 19/#27 terminals and any of the other ECU ter-
minals.
Check the sensor coupler for loose or poorly contacted
terminals.
Input/Output Voltage Inspection
t
-.L
1 000
IT'
2.000
IT'
3.000
m
4.000
m
[3.300 III 16.600 III 19.843 hi 113,000 III
700
400
a
UNCORRECTED I,TMOSPHERIC PRESSURE". TEMP,ALTlTUDE
PZ(M",Hgl
?J~'r-=.~
--=l
t
~ _l.~-.
j
, 1 -
_ l -
1
=
~=
r-
I
I
1
Compensate the voltage reading for pz uSing this for-
mula:
EXAMPLE
Conditions:
Altitude 1500 m (5000 ft)
Temperature 20° C (68
0
F)
Output voltage 2.35 V
Output Compensation:
2.35
+
[0.005
X
(760- 640))
=
2.95 V
Determine atmospheric pressure (pz) based on altitude
and temperature by using the chart at the right. (If
available. use a barometer.)
NOTE: Further testing requires measurements which
must be compensated for atmospheric pressure and
temperature.
Voltmeter reading
+
(0.005 X (760- pz)]
=
Reading to
be compared
ALTITUDE
10-22