Geely EC718, EC718RV, EC715, EC715RV. Manual part — 354
Geely EC718, EC718RV, EC715, EC715RV. Manual part - 354
Diagnostic Steps:
Step 1
Use scan tool to access airbag control module.
(a)
Check DTC.
Yes
No
Step 2
Check the battery.
(a)
Turn the ignition to "ON" position.
(b)
Measure battery voltage with a multimeter.
Standard Voltage: 11-14 V
(c)
Turn the ignition switch to "OFF" position.
(d)
Confirm whether the voltage is Standard Value:.
No
Check and replace the battery or the charging
system. Go to step 8
Yes
Step 3
Check airbag control module and its wiring harness connector.
(a)
Turn the ignition switch to "OFF" position.
(b)
Disconnect the battery negative cable and wait for at least
90s. Refer to
.
(c)
Check whether the connector is properly connected to the
airbag control module.
No
Correctly connect the connector. Go to step 8
Yes
Step 4
Check wiring harness (airbag control module power supply, ground).
1
7 8
9 10
16
15
14
13
12
11
2 3 4 5 6
Airbag Control Module 1 Harness Connector IP35
FE09-5104b
(a)
Disconnect airbag control module connector IP35.
(b)
Connect the battery negative cable and wait for at least 2s.
Refer to
(c)
Turn the ignition switch to "ON" position.
(d)
Measure voltage between connectors IP35 terminal No.11
and vehicle body ground with a multimeter.
Standard Voltage: 11-14 V
(e)
Turn the ignition switch to "OFF" position.
(f)
Measure voltage between connectors IP35 terminal No.16
and vehicle body ground with a multimeter.
Standard Resistance: Less than 1 Ω
Data normal?
No
Repair or replace the wiring harness. Go to
step 8
Safety Protection Device
Airbag System
9-15
Yes
Step 5
Check the wiring harness (instrument cluster power, ground).
15 14 13 12
10 9 8 7 6 5 4 3 2 1
16
32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17
Instrument Cluster Harness Connector IP03
FE09-5105b
(a)
Disconnect the battery negative cable and wait for at least
90s. Refer to
.
(b)
Disconnect the instrument cluster connector IP03.
(c)
Connect the battery negative cable and wait for at least 2s.
Refer to
(d)
Turn the ignition switch to "ON" position.
(e)
Measure voltage between IP03 terminals No.24,32 and the
body ground respectively with a multimeter.
Standard Voltage: 11-14 V
(f)
Turn the ignition switch to "OFF" position.
(g)
Measure resistance between IP03 terminals No.15,16 and
the body ground respectively with a multimeter.
Standard Resistance: Less than 1 Ω
Data Normal?
No
Repair or replace the wiring harness. Go to
step 8
Yes
Step 6
Replace the instrument cluster.
(a)
Replace the instrument cluster. Refer to
.
(b)
Connect the battery negative cable and wait for at least 2s.
Refer to
(c)
Turn the ignition switch to "ON" position.
(d)
Check the airbag warning lamp status.
Is the airbag warning lamp still on after the ignition is off?
No
System normal
Yes
Step 7
Replace the airbag control module.
(a)
Replace the airbag control module. Refer to
.
Next
Step 8
Confirm the repair has been completed.
(a)
Turn the ignition switch to "ON" position and observe the
warning lamp status to confirm the system is normal.
(b)
Use scan tool to check whether there is a historical fault and
clear the historical DTC code.
9-16
Airbag System
Safety Protection Device
9.2.6.5 SRS warning lamp always off
Schematic:
Diagnostic Steps:
Step 1
Check the battery.
(a)
Measure the battery voltage.
Standard Voltage: 11-14 V
Is the voltage specified value?
No
Check and replace the battery or the charging
system. Go to step 5
Yes
Step 2
Check the instrument cluster connector.
(a)
Turn the ignition switch to "OFF" position.
(b)
Disconnect the battery negative cable and wait for at least
90s. Refer to
.
Are the connectors properly connected to the instrument cluster?
No
Properly connect the connector. Go to step 5
Yes
Step 3
Check the wiring harness (instrument cluster power and ground).
15 14 13 12
10 9 8 7 6 5 4 3 2 1
16
32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17
Instrument Cluster Harness Connector IP03
FE09-5105b
(a)
Turn the ignition switch to "OFF" position.
(b)
Disconnect the instrument cluster connector IP03.
(c)
Turn the ignition switch to "ON" position.
(d)
Measure voltage between connector IP03 terminals No.
24,32 and the body ground respectively with a multimeter.
Standard Voltage: 11-14 V
(e)
Turn the ignition switch to "OFF" position.
(f)
Measure resistance between connector IP03 terminals No.
15,16 and the body ground respectively with a multimeter.
Standard Resistance: Less than 1 Ω
Are the voltage and resistance specified values?
No
Check the fuses, repair or replace the wiring
harness. Go to step 5
Yes
Step 4
Replace the instrument cluster.
(a)
Replace the instrument cluster. Refer to
.
Safety Protection Device
Airbag System
9-17
Next
Step 5
Confirm the repair has been completed.
(a)
Turn the ignition switch to "ON" position, observe the warning
lamp status to confirm that the system is normal.
(b)
Use scan tool to check whether there is a historical failure
and clear the historical DTC code.
9.2.6.6 Relevant DTC Code Diagnostic
Collision Sensor Malfunction
Note
This workshop manual only diagnoses the left front collision sensor, other sensors diagnostics are similar. Please refer
to "Left Front Collision Sensor Diagnostic".
Left Front Collision Sensor
DTC Code
Description
Diagnostic
B1071
Left Front Collision Sensor Voltage Error
1. Turn the ignition switch to OFF, disconnect the battery negative
cable and wait for 90s and above, re-connect the battery negative
cable.
2. Check whether there is a fault. If the fault still exists, replace the
Front Collision Sensor Replacement
.
B1072
Left Front Collision Sensor Circuit Open
1. Check whether the circuit between the airbag control module and
the sensor wiring harness is open. Otherwise repair the fault part.
2. Check whether the wiring harness connector is connected properly.
Otherwise properly connect the harness connector.
B1073
Left
Front
Collision
Sensor
Communication Error
Check whether the sensor signal pin and ground and the airbag control
module definition pin is connected correctly. If the connection is not
correct, replace the wiring harness.
B1074
Left
Front
Collision
Sensor
Configuration Error, Sampling Error
Replace the sensors. Refer to
B1075
Left Front Collision Sensor Saturation
Error, Left Front Collision Sensor Error
1. Measure the ECU power supply voltage. If the voltage does not meet
the requirements, check the charging system. Refer
to
Diagnostic Information and Procedures
.
2. If the voltage is normal, replace the sensor. Refer to
.
Schematic:
Diagnostic Steps:
Step 1
Check the wiring harness (airbag control module power supply, ground).
9-18
Airbag System
Safety Protection Device
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