Mazda B-Series 1997 Workshop Manual page 525

FT
CONTROL SYSTEM (FOR 2 . 3 ~ )
1
71 Vehicle power
(Input)
)
Terminal Connected To
'
PCM relay malfunction.
Open or short circuit.
L p - -
- -
-
A=
- -
/
Key ON
---
- -
- -
- A
Test Condition
(Output)
1
74
Specification
- 1
70
I
- -
Injector #3
Hot idle 3.4-3.5 ms
-
I
Open or short circuit from
Driving 48 kmlh (30 mph) 5.7-6.9 ms
1
injector #3 to PCM.
p p
-
/
Driving 88 kmlh (55 mph)
1
5.8-8.4 ms
1
-
Remark 1 Possible Cause
- - -
- -
-
-
- 1
-
I Key ON
1
76
1
Power ground
i
1
Constant O V I -
I
-
Hot idle
Driving 48 kmlh (30 mph)
--
Driving 88 kmlh (55 mph)
1
Poor connection at PCM
/
or open circuit.
2 .
" +
- -
-
4
I
Power ground
3.4-3.5 ms
I
- I
Open or short circuit from
Constant
5.7-6.9 ms
5.8-8.4 ms
j Poor connection at PCM
/
or open circuit.
- - -
1
-
1
injector # I to PCM.
-
4
/
(O,$ut)
)
Ignition coil
3
i B + I -
'
Open or short from
/
coil #3 to PCM.
I
/
Constant
i
- -
- -
& . t - - - - .
j p -
I
TCIL always ON:
I
1
Lamp illuminated
circuit from TClL to
79
/
Transmission control
[AT]
!
indicator lamp (TCIL) PCM malfunction.
(output)
j
!
1
Lamp not illuminated B+
PID OFF
1
TClL never ON:
i
/
Open circuit.
- a -
- --
(Output)
I
80
Fuel pump ON
Fuel pump relay
I
Fuel pump OFF
PID ON
/
Open c~rcult from fuel
+ e F 1
pump relay to PCM.
key^
6-9V
I
1
PID 24 psi i
1
(Output)
1
Electronic pressure
1
Hot idle
9. 7 i " , " , v
control (EPC) solenoid
Driving 48 km/h (30 mph)
PID 25 PSI
'
Open or short from EPC
PID 30
PSI
'
to PCM.
83
(Output)
1
t - -
82
I
-
*
Idle air control (IAC)
1
Hot idle
Open or short circuit from
solenoid I D r i v i n ~ 48 kmlh (30 mph) PID 30-55%
/
IAC to PCM.
- - -
1 Drlvlng 88 kmlh (55 mph)
+--
-
- -
+ 7 - I O . 1 V
I
PID 60-65"
j Key ON
0 HZ PID 0 R P M ,
L - -
- -
1
Hot ~dle
--I-~F
PID 0 RPM
/
Turbine shaft speed
(TSS) sensor
PID 30
PSI
,
- -
- -
- - -
Drivlng 88 kmlh (55 mph)
-
- -
Key ON
Open or short circuit from
PID
OO/o
8-1 0.4V
-
C I
Driving 48 kmlh (30 mph)
i
190-220
HZ
B+
1
Driving 88 kmlh (55 mph)
250-290 Hz
1
2230 RPM
PID 2200-
I
Cyl~nder ident~ficat~on
Open or short c~rcult from
(camshaft poslt~on camshaft posltlon sensor
Drlvlng 48 kmlh (30 mph)
to PCM
-
87
-
6BUOFT-241
Drivlng 88 kmlh (55 mph) 19 Hz
- -
- -
- -
-
i
-
-
t
-
I
-