Chery Tiggo 5 (T21). Service manual — part 379
34–
16
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. Turn ignition switch to LOCK.
b. Loosen and retighten the ground bolt or nut.
c. Check the installation position of the ground connection.
a. Turn ignition switch to LOCK.
DTC
B1303
The antenna communication is disturbed
DTC Code
DTC Definition
DTC Detection
Conditions
Possible Causes
B1303
The antenna
communication is
disturbed
Ignition switch ON
Wire harness or connector
Immobilizer control module
ECM
CAUTION
If the ECM or immobilizer control module is replaced, match the system with the X-431 3G diagnostic
tester (
).
1
Check ground connection
Repair or replace ground connection
NG
2
Check engine control module (ECM) connector
OK
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34
b. Disconnect the ECM connector E-033.
c. Check if connector is damaged.
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. Turn the ignition switch to LOCK.
RT21380241
Repair or replace connector if necessary
NG
3
Check immobilizer control module connector and immobilizer coil connector
OK
RT21340100
Repair or replace connectors if necessary
NG
4
Check immobilizer control module and ECM communication circuit
OK
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34
b. Disconnect the immobilizer control module connector I-
018 and ECM connector E-033.
c. Check the wire harness between terminals of immobilizer
control module and ECM.
Check for open
RT21340110
7
5
3
1
8
6
4
2
I-018
E-033
49 50 51
63
64
15
16
31
32
47
48
33 34 35
17 18 19
1
2
3
52 53 54 55 56 57 58 59 60 61 62
36 37 38 39 40 41 42 43 44 45 46
20 21 22 23 24 25 26 27 28 29 30
4
5
6
7
8
9 10 11 12 13 14
-
+
Multimeter
Connection
Condition
Specified
Condition
I-018 (6) - E-033
(17)
Always
Continuity
I-018 (8) - E-033
(1)
Always
Continuity
Repair or replace harness if necessary
NG
System is operating normally
OK
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19
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. Try to restart the engine with another ignition key.
b. Check if the engine can be started.
a. Replace the first ignition key or transponder in it, and match it (
).
DTC
B1304
None transponder was detected
DTC Code
DTC Definition
DTC Detection
Conditions
Possible Causes
B1304
None transponder was
detected
Ignition switch ON
Transponder
Wire harness or connector
Immobilizer coil
Immobilizer control module
CAUTION
If the ECM or immobilizer control module is replaced, match the system with the X-431 3G diagnostic
tester (
).
1
Start the engine with another ignition key
Go to next step 3
NG
2
Replace first ignition key or transponder
OK
OK
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