
MPI –
Troubleshooting
13-58
Item
No.
Reference
page
Inspection
procedure
No.
Normal condition
Inspection contents
Inspection
item
22
Crank angle
sensor
D
Engine: Cranking
D
Tachometer:
Connected
Compare the engine
speed readings on
the tachometer and
the MUT-
II
.
Accord
–
–
D
Engine: Idling
D
Idle position
switch: ON
When engine
coolant temperature
is –20
_
C
1,300 – 1,500 rpm
When engine
coolant temperature
is 0
_
C
1,300 – 1,500 rpm
When engine
coolant temperature
is 20
_
C
1,300 – 1,500 rpm
When engine
coolant temperature
is 40
_
C
1,150 – 1,350 rpm
When engine
coolant temperature
is 80
_
C
750 – 950 rpm
25
Barometric
pressure
Ignition switch: ON
At altitude of 0 m
101 kPa
Code No.
25
13-14
pressure
sensor
At altitude of 600 m
95 kPa
25
At altitude of 1,200 m
88 kPa
At altitude of 1,800 m
81 kPa
26
Idle position
switch
Ignition switch: ON
Check by operating
accelerator pedal
Throttle valve:
Set to idle position
ON
Procedure
No. 26
13-38
accelerator pedal
repeatedly.)
Throttle valve:
Slightly open
OFF*
27
Power
steering fluid
pressure
Engine: Idling
Steering wheel
stationary
OFF
Procedure
No. 28
13-39
pressure
switch
Steering wheel
turning
ON
28
A/C switch
Engine: Idling
(when A/C switch is
A/C switch: OFF
OFF
Procedure
No. 29
13-39
(
C
tc
ON, A/C compressor
should be operating.)
A/C switch: ON
ON
NOTE
*:
The idle position switch normally turns off when the voltage of the throttle position sensor is 50 –
100 mV higher than the voltage at the idle position. If the throttle position switch turns back on
after the throttle valve has opened, the idle position switch and the throttle position sensor need
to be adjusted.