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)

Turn the ignition switch to "OFF" position.

(b)

Disconnect the battery cable and wait for at least 90s.

(c)

Disconnect the airbag control module connector IP35.

(d)

Connect the battery cable and wait for at least 2s.

(e)

Turn the ignition switch to "ON" position.

(f)

Run all the electronic system components (defroster, wipers,
headlamps, heater blower, etc.).

(g)

Measure voltage between connectors IP35 terminal No.11
and the body ground with a multimeter.
Standard Voltage: 11-14 V

(h)

Turn the ignition switch to "OFF" position.

(i)

Measure resistance between connectors IP35 terminal No.
16 and the body ground 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

Yes

Step 2

Check the wiring harness connector.

(a)

Disconnect the airbag control module harness connector
IP36.

(b)

Disconnect the left front collision sensor wiring harness
connector CA11.

Are the two wiring harness connectors normal?

Yes

Replace the wiring harness connectors.

No

Step 3

Check the left front collision sensor wiring harness (open circuit).

1
7 8

9 10

16

15

14

13

12

11

2 3 4 5 6

Airbag Control Module 3 Harness Connector IP36

FE09-5109b

(a)

Measure resistance between IP36 terminal No.7 and CA11
terminal No.2 with a multimeter.

(b)

Measure resistance between IP36 terminal No.8 and CA11
terminal No.1 with a multimeter.
Standard Resistance: Less than 1 Ω

Is the resistance specified value?

No

Replace the left front collision sensor wiring
harness.

Safety Protection Device

Airbag System

9-19

2 1

Left Front Collision Sensor Harness 
Connector CA11

FE09-5110b

Yes

Step 4

Check the left front collision sensor wiring harness (if short circuit between lines).

(a)

Measure resistance between connector CA11 terminals No.
1 and 2 with a multimeter.
Standard Resistance: 10 kΩ or higher

Is the resistance specified value?

No

Replace the harness

Yes

Step 5

Check the left front collision sensor wiring harness (whether the circuit is short to ground).

(a)

Measure resistance between CA11 terminal No.1 and the
vehicle body ground with a multimeter.

(b)

Measure resistance between CA11 terminal No.2 and the
vehicle body ground with a multimeter.
Standard Resistance: 10 kΩ or higher

Is the resistance specified value?

No

Replace the harness

Yes

Step 6

Check the left front collision sensor wiring harness (short to power supply).

(a)

Connect the battery negative cable and wait for at least 2s.

(b)

Turn Turn the ignition switch to "ON".

(c)

Measure voltage between CA11 terminals No.1 and 2
respectively and the body ground with a multimeter.
Standard Voltage: Less than 1 V

Is the voltage specified value?

No

Replace the harness

9-20

Airbag System

Safety Protection Device

Yes

Step 7

Replace the left front collision sensor.

(a)

Disconnect the battery negative cable and wait for at least
90s. Refer to 

2.11.8.1

 

Battery Disconnection

.

(b)

Replace the driver front collision sensor. Refer to

9.2.7.6

 

Front Collision Sensor Replacement

.

Is the system working properly?

Yes

System normal

No

Step 8

Replace the airbag control module.

(a)

Replace the airbag control module. Refer to 

9.2.7.1

 

Airbag

Control Module Replacement

.

(b)

Confirm the repair completed.

Next

Step 9

System normal.

Actuator Malfunction

Note

The workshop manual only diagnoses the driver airbag and driver seat belt pretensioner, the rest actuators diagnostics
are similar. Please refer to "Driver airbag and driver seat belt pretensioner Diagnostic".

Driver Airbag Malfunction

DTC Code

Description

B1021

Driver Front Airbag Short To GND

B1022

Driver Front Airbag Short To + B

B1023

Driver Front Airbag Low Resistance

B1024

Driver Front Airbag High Resistance

B1025

Driver Front Airbag Configuration Error

Schematic:

Refer to 

9.2.6.4

 

Warning lamp Always On

in the schematic.

Diagnostic Steps:

Step 1

Check the wiring harness (Airbag Control Module - power, ground).

Safety Protection Device

Airbag System

9-21

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)

Turn the ignition switch to "OFF" position.

(b)

Disconnect the battery negative cable and wait for at least
90s. Refer to 

2.11.8.1

 

Battery Disconnection

.

(c)

Disconnect the airbag control module connector IP35.

(d)

Connect the battery negative cable and wait for at least 2s.

(e)

Turn the ignition switch to "ON" position.

(f)

Run all the electronic system components (defroster, wipers,
headlamps, heater blower, etc.).

(g)

Measure voltage between connector IP35 terminal No.11
and the body ground with a multimeter.
Standard Voltage: 11-14 V

(h)

Turn the ignition switch to "OFF" position.

(i)

Measure resistance between connector IP35 terminal No.16
and the body ground 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.

Yes

Step 2

Check the clock spring connector.

(a)

Disconnect the battery negative cable and wait at least 90s.
Refer to 

2.11.8.1

 

Battery Disconnection

.

(b)

Check whether the clock spring connector is damaged,
whether the retaining buckle is damaged.

Yes

Replace the clock spring

No

Step 3

Check the circuit between the airbag control module and driver front airbag.

(a)

Disconnect the battery negative cable and wait for at least
90s. Refer to 

2.11.8.1

 

Battery Disconnection

.

(b)

Disconnect the clock spring harness connector form the
driver front airbag.

(c)

Disconnect the airbag control module harness connector.

Note

Before removal, please measure the airbag control
module harness connector IP35 Terminal No.1 and 2
short films. Please install the wiring harness connector
short film before installing the connectors.

Note

Note: Do not use a multimeter to measure the driver
airbag, otherwise it might set off airbag and cause
serious injuries.

(d)

Measure resistance between airbag control module IP35
Terminal No.1 and 2 and the body ground with a multimeter.
Standard Resistance: 10 kΩ or higher

9-22

Airbag System

Safety Protection Device