DTC 11 [IMMOBILIZER SYSTEM]

id0902e4904500

DTC 11

Coil or wiring harness between immobilizer unit and coil is open circuit.
POSSIBLE CAUSE
•  Open circuit in coil
•  Poor connection of coil connector
•  Poor connection of immobilizer unit
•  Defective wiring harness between immobilizer unit and coil

Diagnostic procedure

STEP

INSPECTION

ACTION
1
INSPECT CONNECTOR CONNECTION
•  Is connector of coil or immobilizer unit connected securely?
Yes
Go to next step.
No
Connect connector securely.
2
INSPECT COIL CIRCUIT FOR CONTINUITY
•  Is there continuity between coil terminals A and C?
Yes
Go to next step.
No
Replace coil.
3
INSPECT COIL CIRCUIT FOR CONTINUITY
•  Disconnect coil connector and immobilizer unit connector.
•  Inspect if either of the following wiring harnesses has continuity.
―  Immobilizer unit D to coil C, and immobilizer unit F to coil A
―  Immobilizer unit D to coil A, and immobilizer unit F to coil C
Note
•  Vehicle harness which is connected to immobilizer unit terminals D and F, uses a twisted pair wire. Because twisted pair wire does not have polarity, immobilizer unit connector terminal D may be connected to coil connector terminal A or C. Likewise, immobilizer unit connector terminal F may be connected to coil connector terminal A or C.
Yes
Replace immobilizer unit and reprogram immobilizer system.
(See IMMOBILIZER SYSTEM REPROGRAM PROCEDURE [WL-3, WL-C, WE-C].)
(See IMMOBILIZER SYSTEM REPROGRAM PROCEDURE [WLT-2].)
No
Repair wiring harness between coil and immobilizer unit.