Isuzu 4HL1 Workshop Manual page 74

1A-72 Engine Control System
Tech 2 Data Display
QWS Switch
ECO Relay
Freezer Switch
Transmission Coding
• Engine status: running at around 1500 rpm (engine coolant temperature: 80°C, all peripheral devices
(air conditioner, freezer, etc.): OFF)
Tech 2 Data Display
System Voltage
Vehicle Speed
Desired Idle Speed
Engine Speed
Accelerator Sensor
Final Accelerator Opening
ECT Sensor (Engine Coolant
Temperature)
Coolant Temperature
IAT Sensor (Intake Air Temperature)
Intake Air Temperature
Fuel Temperature Sensor
Fuel Temperature
Units displayed
ON/OFF OFF(DTC84 is detected)
ON/OFF OFF(DTC84 is detected)
ON/OFF OFF(DTC84 is detected)
MT/AT MT (DTC84 is detected)
Units displayed
V 24 (DTC84 is detected)
km/h 0 (DTC84 is detected)
RPM
RPM 0 (DTC84 is detected)
V
% 0 (DTC84 is detected)
V
Normal running phase:
°C Startup phase: –20
(DTC23 is detected)
80 (DTC84 is detected)
V
Normal running phase:
°C
Startup phase: –20
(DTC22 is detected)
V
Normal running phase:
°C Startup phase: –20
(DTC211 is detected)
80 (DTC84 is detected)
Fail-safe values
Fail-safe values
—
—
—
55
—
25
—
40
Values at idling
OFF
OFF
OFF
The value is
determined by the
transmission type.
Values at around
1500 rpm
16 ~ 38
0
MT: 575
AT: 640
Approx. 1500
1.3
19 ~ 21
Approx. 0.6
(The value will change
depending on
temperatures around
the engine)
80 ~ 85
(The value will change
depending on
temperatures around
the engine)j
2.3 ~ 2.4
(The value will change
depending on
temperatures around
the engine)
29 ~ 30
(The value will change
depending on
temperatures around
the engine)
1.2 ~ 1.3
(The value will change
depending on
temperatures around
the engine)
50 ~ 53
(The value will change
depending on
temperatures around
the engine)