Geely JL481Q, Manual

Page: 124 / 198

Examination:
1. Preheat the engine to make it reach the normal working temperature.
2. Connect the tachometer to the engine and make its probe connected to the connector’s IG (-) terminal (See Fig. 274).
3. Examine the fuel cut function Increase the engine rotation speed to 2,500r/min. Use a stethoscope to examine the
injector’s working noise. Check whether the injector’s working noise stops temporarily and then resumes after the throttle
rod is released (See Fig. 275). When doing this, you shall firstly shut down the air-conditioner. The engine speed shall be
1,400r/min after the fuel supply resumes.
4. Detach the tachometer.
XI. Examination of Fuel-cut Speed
Table 13
Note: system rating DC voltage 12V.
NC
A/C vaporizer.
NC
(+12) V
(+12) V
Pulse voltage(0-12V)
Pulse voltage(0-12V)
Pulse voltage(0-12V)
NC
NC
E(ECU connects the ground when operating)
E(ECU electron ground 2)
NC
E(ECU electron 2)
NC
NC
NC
(+)12V
NC
vehicle speed sensor input(square wave)
NC
E(ECU power ground 1)
NC
(+)12V
Stepper motor phase D
Stepper motor phase A
Stepper motor phase B
Stepper motor phase C
E(ECU connects the ground when operating)
E(ECU connects the ground when operating)
E(ECU connects the ground when operating)
ECU diagnostic signal output
NC
NC
NC
A/C switch signal input(The voltage is 12v when operating)
Electronic load signal input(The voltage is 12v when operating)
Electronic load signal input(The voltage is 12v when operating)
NC
Phase sensor signal input
E (ECU e15ron ground 2)
E(ECU connects the ground when operating)
E(ECU connects the ground when operating)
E(ECU ignition ground 1)
NC
E(ECU connects the ground when operating)
Pulse voltage(0-12V)
Pulse voltage(0-12V)
Pulse voltage(0-12V)
Speed signal output
NC
NC
1
2
3
4
5
6
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
1
2
3
4
5
6
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
NC
(+)12V
(+)12V
E(ECU connects the ground when operating)
Speed sensor signal input A
Throttle position sensor signal input
E(ECU connects the ground when operating)
Oxygen sensor signal input
Knock sensor signal input A
Knock sensor signal input B
NC
NC
NC
NC
NC
NC
Pulse voltage (0-12V)
NC
Fault diagnosis led square wave output
NC
NC
(+) 5V
(+) 5V
Speed sensor signal input B
E(ECU connects the ground when operating)
E(ECU connects the ground when operating)
Intake pressure sensor signal input
NC
Coolant
Intake temperature sensor signal input
Voltage properties Voltage properties
SMA car series M7.9.7 system pin voltage definition
120