Output Voltage Inspection - Honda 954 Service Manual

Adjust the idle speed if the idle speed differs f r o m the
specified speed.
IDLE SPEED: 1,200
Remove the vacuum gauge from the vacuum hoses.
Connect the each cylinder vacuum hose t o the 5-way
joint.
Reset the PGM-FI self-diagnosis system (page 5-71,

OUTPUT VOLTAGE INSPECTION

Connect the test harness t o the ECM (page 5-8).
Measure the voltage at the test harness terminals
(page 5-91.
-
A26 (-1
CONNECTION: B4
(+)
-
STANDARD: 2.7 3.1 V
The MAP sensor output voltage (above)
under the standard atmosphere ( 1 atm
The MAP sensor output voltage is affected by t h e dis-
tance above sea level, because the output voltage is
changed by atmosphere.
Check the sea level measurement and be sure that the
measured voltage falls within the specified value.
FUEL SYSTEM (Programmed Fuel Injection)
VACUUM HOSES
3.5
3.1
3.0
2.7
2.5
is
measured
1,030 hPa).
= 2.0
1.5
1
0.5
0 500 1,000 2,000
1,500
(3,300) (4,950)
(1,650) (6,600)
: m
feet)