Chery Tiggo. Manual — part 429
4.
CHECK IMMOBILIZER CONTROL MODULE POWER SUPPLY
• Turn ignition switch on.
• Check if voltage is present on the Immobilizer control module connector C-025, pin 4,1 and ground.
IMMOBILIZER CONTROL
MODULE TERMINAL
GROUND
1
Ground
4
Is 12 V present?
Yes
>>
Replace and program the Immobilizer control module. Refer to DTC B3077 Diagnostic Procedure.
No
>>
For DTC B3050, go to the next step.
For DTC B3053, go to the step 6.
5.
CHECK IMMOBILIZER CONTROL MODULE POWER SUPPLY CIRCUIT
• Turn ignition switch off.
• Disconnect the negative battery cable.
• Disconnect the body fuse and relay box electrical connector A.
• Check harness continuity between the following terminals:
• Continuity should exist.
BODY FUSE
AND RELAY
BOX
TERMINAL
IMMOBILIZER
CONTROL
MODULE
TERMINAL
CONTINUITY
A2
1
Yes
DIAGNOSIS & TESTING
15
• Check for harness continuity between the following terminals:
• Continuity should exist.
BODY FUSE
AND RELAY
BOX
TERMINAL
IMMOBILIZER
CONTROL
MODULE
TERMINAL
CONTINUITY
A6
4
Yes
• Check harness for a short to ground.
• Continuity between Immobilizer control module power supply and ground should not exist.
Is the check result normal?
Yes
>>
Go to the step 7.
No
>>
Repair or replace the open or high resistance circuit or short to ground in harness or connectors.
6.
CHECK IMMOBILIZER CONTROL MODULE POWER SUPPLY CIRCUIT
• Turn ignition switch off.
• Disconnect the negative battery cable.
• Disconnect the body fuse and relay box electrical connector A.
• Check the resistance between Immobilizer control module ignition switch circuit terminal 4 and Immobilizer con-
trol module battery supply circuit terminal 1.
IMMOBILIZER
CONTROL
MODULE
TERMINAL
IMMOBILIZER
CONTROL
MODULE
TERMINAL
CONTINUITY
1
4
No
• Check resistance between Immobilizer control module ignition switch circuit and other power circuits.
Is the check result normal?
Yes
>>
Go to the step 8.
No
>>
Repair or replace short to power circuits in harness or connectors.
DIAGNOSIS & TESTING
7.
DETECT MALFUNCTIONING PART
• Check the following:
− Body fuse and relay box
− Fuse F17 (10A), fuse F26 (10A)
− Harness between battery and body fuse and relay box
Is the check result normal?
Yes
>>
Go to the next step.
No
>>
Repair or replace damaged components.
8.
REPLACE AND PROGRAM THE IMMOBILIZER CONTROL MODULE
• With the X-431 scan tool, view active DTCs in the Immobilizer control module.
• Refer to ⬙DTC Confirmation Procedure⬙.
Is DTC B3050 or B3053 still present?
Yes
>>
Replace and program Immobilizer control module.
No
>>
The system is now operating properly.
Reassemble the vehicle and verify the customers complaint is repaired.
DIAGNOSIS & TESTING
15
B3055 - No Transponder Modulation Or No Transponder
B3056 - No Transponder Fixed Code Programmed
DIAGNOSIS & TESTING
LTSMW150081T
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