Chery Tiggo 5 (T21). Manual - part 380

34–

20

34

a. Turn ignition switch to LOCK.
b. Disconnect the immobilizer control module connector 



I-018 and immobilizer coil connector.

c. Check if connectors are damaged.

a. Measure the immobilizer coil resistance.

3

Check immobilizer control module connector and immobilizer coil connector

RT21340100

Repair or replace connectors if necessary

NG

4

Check immobilizer coil

OK

RT21340120

-

+

1

2

3

4

Multimeter 

Connection

Condition

Specified 

Condition

2 - 3

Always

15 - 20 Ω

34–

21

34

b. Check for the continuity of immobilizer coil connector.

RT21340120

-

+

1

2

3

4

Multimeter 

Connection

Condition

Specified 

Condition

2 - 4

Always

No continuity

3 - 4

Always

No continuity

Replace immobilizer coil

NG

Replace immobilizer control module

OK

34–

22

34

DTC Confirmation Procedure

Confirm that battery voltage is between 11 and 14 V before performing the following procedures.
 Turn ignition switch to LOCK.
 Connect X-431 3G diagnostic tester (the latest software) to Data Link Connector (DLC), and make it 

communicate with vehicle electronic module by the data network.

 Turn ignition switch to ON.
 Using X-431 3G diagnostic tester to record and clear the DTCs stored in the TCU.
 Turn ignition switch to LOCK and wait for a few seconds.
 Turn ignition switch to ON, and then select "Read Code".
 If DTC is detected, the malfunction indicated by the DTC is current. Go to the diagnosis procedure - Step 1.
 If DTC is not detected, the malfunction indicated by the DTC is intermittent. Please refer to Intermittent 

DTC Troubleshooting.

Diagnosis Procedure

a. Using the X-431 3G diagnostic tester, match the ignition key (

See page 34-7

).

DTC

B1305

Immobilizer has none key was storage

DTC Code

DTC Definition

DTC Detection 

Conditions

Possible Causes

B1305

Immobilizer has none 
key was storage

Ignition switch ON

 Wire harness or connector
 Immobilizer control module

CAUTION

 If the ECM or immobilizer control module is replaced, match the system with the X-431 3G diagnostic 

tester (

See page 34-7

).

1

Match ignition key

Replace immobilizer control module

NG

System is operating normally

OK

34–

23

34

DTC Confirmation Procedure

Confirm that battery voltage is between 11 and 14 V before performing the following procedures.
 Turn ignition switch to LOCK.
 Connect X-431 3G diagnostic tester (the latest software) to Data Link Connector (DLC), and make it 

communicate with vehicle electronic module by the data network.

 Turn ignition switch to ON.
 Using X-431 3G diagnostic tester to record and clear the DTCs stored in the TCU.
 Turn ignition switch to LOCK and wait for a few seconds.
 Turn ignition switch to ON, and then select "Read Code".
 If DTC is detected, the malfunction indicated by the DTC is current. Go to the diagnosis procedure - Step 1.
 If DTC is not detected, the malfunction indicated by the DTC is intermittent. Please refer to Intermittent 

DTC Troubleshooting.

Diagnosis Procedure

a. Using the X-431 3G diagnostic tester, write the security code (

See page 34-7

).

DTC

B1306

Security code was not programmed

DTC Code

DTC Definition

DTC Detection 

Conditions

Possible Causes

B1306

Security code was not 
programmed

Ignition switch ON

 Wire harness or connector
 Immobilizer control module

CAUTION

 If the ECM or immobilizer control module is replaced, match the system with the X-431 3G diagnostic 

tester (

See page 34-7

).

1

Write security code

Replace the immobilizer control module

NG

System is operating normally

OK