4
）
Technical Specification
5) Notice
Attention on static defend during installing, don’t touch interface of ECU by hands.
Attention on the protection of plug and stitch.
6) Fault Symptom & Judgment
Failure symptom: idle speed not steady, acceleration not good, idle speed over high, tail gas over proof, start
difficult, air condition failure, fuel injector lose control, flameout and so on.
Reasons
：
1
、
Because of the overload of external connection apparatus lead the burning of parts inside ECU , and failure.
2.
Circuit board tarnishing because of ECU get water inside.
Notice
：
L
、
Do not discharge the ECU randomly while maintaining.
2
、
First discharge the battery power supply, one minute later, discharge the ECU.
3
、
Store the ECU discharged.
4
、
Don’t install any circuit on the connection line of ECU
Brief Measure Method
：
1
、
(Plug the tie-in) Read the fault record of the engine by engine data K.
35
Sensor earth 3
earth
76(J2-A8)
blower switch
input
36
sensor earth 2
earth
77
headlight switch
input
37
Intake air pressure
Sensor
input 78
38
79 phase
sensor
input
39
（
J2-B3
）
Engine Coolant Sensor
input
80
40(J2-B4)
Intake air temperature
sensor
input 81
value
Scope
least typical
most
unit
normal
running
9.0
16.0
V
voltage of battery
finity funtion
6.0-9.0
16.0-18.0
V
26.0V
keep part of functions, can do failure
diagnosis
60 S
endure storage
battery over
voltage and time
13.0V
insure start function, can do failure
diagnosis
60 S
working temperature
一
40
+70
℃
storage temperature
—40
+90
℃
