Geely EC718, EC718RV, EC715, EC715RV. Manual part — 196

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65

Cylinder No.1 Fuel Injector Harness
Connector EO11

ECM Harness Connector EO01

FE02-5255b

(a)

Turn the ignition switch to "OFF" position.

(b)

Disconnect cylinder No.1 fuel injector wiring harness
connector EO11.

(c)

Disconnect ECM harness connector EO01.

(d)

Measure resistance between cylinder No.1 fuel injector
wiring harness connector EO11 terminal No.1 and ECM
harness connector terminal No.65. Check whether the circuit
is open. Otherwise, repair the faulty part.

(e)

Measure resistance between cylinder No.1 fuel injector
wiring harness connector EO11 terminal No.1 and a reliable
ground. Check whether the circuit is short to ground.
Otherwise, repair the faulty part.

(f)

Measure voltage between cylinder No.1 fuel injector wiring
harness connector EO11 terminal No.1 and a reliable ground.
Check whether the circuit is short to power supply. Otherwise,
repair the faulty part.

Test Items

Standard Value

Resistance Between EO11 (1) and EO01 (65)

Less than 1 Ω

Resistance Between EO11 (1) and A Reliable
Ground

10 kΩ or higher

Voltage Between EO11 (1) and A Reliable
Ground

0 V

Execute next step as per normal.

Next

Step 7

Check ECM power supply circuit.

(a)

Check whether ECM power supply circuit is normal.

(b)

Check whether ECM ground circuit is normal.

No

Repair the faulty part.

Yes

Step 8

Replace ECM.

(a)

Carry out crankshaft self learn after ECM replacement. Refer
to

2.12.7.11

Crankshaft Position Sensor (CKP) Learn

.

Next

Step 9

Use scan tool to confirm whether the DTC code is stored again.

(a)

Connect scan tool to the datalink connector.

(b)

Turn the ignition switch to "ON" position.

(c)

Clear DTC code.

(d)

Start and run the engine at idle speed to warm up the engine
for at least 5 min.

(e)

Road test the vehicle for at least 10 min.

Engine

Control System JL4G15-D

2-699

(f)

Read control system DTC code again to confirm that the
system has no DTC code.

No

Intermittent Fault. Refer to

2.2.7.3

Intermittent

Fault Check

.

Yes

Step 10

Diagnostic completed.

2.12.7.30 DTC P0264 P0265

1. DTC Descriptor:

DTC

P0264

Cylinder No.2 Fuel Injector Circuit Low Voltage Fault

DTC

P0265

Cylinder No.2 Fuel Injector Circuit High Voltage Fault

Fuel injectors operating voltage is provided by The Main Relay controlled by ECM. battery voltage passes through the main relay
terminal No.3 to all fuel injector wiring harness connectors terminal No.1. ECM controls Cylinder No.2 fuel injector internal ground
circuit through ECM harness connector EO01 terminal No.63. ECM monitors all fuel injector driver circuits status, if ECM detects
driving circuit status corresponding voltage is incorrect, ECM will set a fuel injector control circuit fault DTC code.

2. Conditions For Setting DTC and The Fault Location:

DTC Code

DTC Detection Strategy

Conditions For Setting The DTC

(Control Strategy)

Fault Locations

P0264

Hardware Circuit Checks

Injector Signal Circuit Open or Short

To Ground

1. Sensor Circuit

2. Sensor

3. ECM

P0265

Hardware Circuit Checks

Injector Signal Circuit Short To Power

Supply

1. Sensor Circuit

2. Sensor

3. ECM

2-700

Control System JL4G15-D

Engine

3. Schematic:

MAIN

EF12

5

2

3

1

1

2

MPR

EO01

63

INJD

EO35

62

Main Relay

From Battery

Engine

Control

Module

Cylinder No.2 Fuel Injector

FE02-5256b

4. Diagnostic Steps:

Note

Before carrying out this diagnosis step, observe the data list on scan tool and analyze the accuracy of the data, as
these will help with quick diagnosis.

Step 1

Initial Inspection

(a)

Check for fuel injector wiring harness connector damage,
poor connection, aging and signs of loosening.

Next

Step 2

Measure the fuel injector resistance.

Engine

Control System JL4G15-D

2-701

2

1

Cylinder No.2 Fuel Injector

FE02-5058b

(a)

Disconnect the fuel injector wiring harness connector EO12.

(b)

Measure resistance between the two fuel injector terminals.

Standard Resistance: 11.6-12.4 Ω at 20°C(68 ºF)

(c)

Connect the fuel injector wiring harness connector EO12.

No

Replace fuel injector. Refer to

2.2.8.2

Fuel

Injector Replacement

.

Yes

Step 3

Measure fuel injector working power supply.

FE02-5257b

2

1

Cylinder No.2 Fuel Injector Harness
Connector EO12

(a)

Turn the ignition switch to "OFF" position.

(b)

Disconnect cylinder No.2 fuel injector wiring harness
connector EO12.

(c)

Turn the ignition switch to "ON" position.

(d)

Measure voltage between cylinder No.2 fuel injector wiring
harness connector EO12 terminal No.2 and a reliable ground.

Standard Voltage: 11-14 V

(e)

Connect cylinder No.2 fuel injector wiring harness connector
EO12.

Voltage normal?

No

Go to step 5

Yes

Step 4

Check the fuel injector control circuit.

FE02-5258b

2

1

Cylinder No.2 Fuel Injector Harness
Connector EO12

(a)

Turn the ignition switch to "OFF" position.

(b)

Disconnect cylinder No.2 fuel injector wiring harness
connector EO12.

(c)

Connect a light-emitting diodes test lamp to the fuel injector
wiring harness connector EO12 terminal No.1 and 2.

(d)

Start the engine.

(e)

Observe whether test lamp is flashing.

Is the test lamp flashing?

No

Go to step 6

Yes

Go to step 7

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Control System JL4G15-D

Engine