FUEL SYSTEM <4D5-step
III
> -
Troubleshooting
13-49
Terminal
No.
Normal condition:
Inspection conditions (engine status)
Check item
16
Glow plug relay
D
Engine coolant temperature: 40
_
C or lower
D
Ignition switch: OFF
→
ON
System voltage (In about
8 seconds: at 20
_
C)
→
0
- 1 V
17
Variable geometry
solenoid valve
Engine: After warm-
ing up the engine
Engine is idling
4.4 - 10.1 V
solenoid valve
ing up the engine
Engine is suddenly raced
Voltage rises
21
A/C relay
A/C switch: OFF
→
ON
System voltage
→
0 - 1
V
31
Idle switch
Ignition switch: ON
Release the foot from the
accelerator pedal.
0 - 1 V
Step on the accelerator
pedal slightly
3 V or higher
32
A/C switch
A/C in operation (compressor in operation)
System voltage
36
Selector switch
between A/T and M/T
Ignition switch: ON
System voltage (M/T)
46
Control relay
Ignition switch: ON
0 - 1 V
Ignition switch: ON
→
OFF (in about 8 seconds)
System voltage
51
Pump speed sensor
Engine: Idling (Use a digital voltage meter to check.)
0 V
↔
5 V
(repeat the change)
55
Accelerator pedal
position sensor (sub)
Ignition switch: ON
Accelerator pedal: Idling
position
0.9 - 1.1 V
Accelerator pedal: Fully
opened position
3.7 V or higher
60
Sensor power supply
Ignition switch: ON
4.6 - 5.4 V
71
Ignition switch-ST
Engine: Cranking
8 V or higher
80
Back-up power supply
Ignition switch: OFF
System voltage
81
Power supply to accel-
erator pedal position
sensor (main)
Ignition switch: ON
4.6 - 5.4 V
82
Ignition switch-IG
Ignition switch: ON
System voltage
83
Engine coolant tem-
perature sensor
Ignition switch: ON
Engine coolant
temperature: 0
_
C
3.7 - 4.3 V
Engine coolant
temperature: 20
_
C
2.8 - 3.4 V
Engine coolant
temperature: 40
_
C
1.9 - 2.5 V
Engine coolant
temperature: 80
_
C
0.6 - 1.2 V
84
Accelerator pedal posi-
tion sensor (main)
Ignition switch: ON
Accelerator pedal: Idling
position
0.9 - 1.1 V
Accelerator pedal: Fully
opened position
3.7 V or higher
85
Boost pressure sensor
Ignition switch: ON (101 kPa)
1.0 - 1.4 V
86
Vehicle speed sensor
D
Ignition switch: ON
D
Move the vehicle forward slowly
0 V
↔
8 - 12 V
(repeat the change)