DTC 11


BME090267000206

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 OPEN
• Disconnect coil connector and immobilizer unit connector.
• Inspect for open circuit in wiring harness:
- Immobilizer unit D to coil A, and
immobilizer unit F to coil C
- Immobilizer unit D to coil C, and
immobilizer unit F to coil A
• Is there an open?
Note
• Vehicle harness which is connected to immobilizer unit terminals D and F, uses a twist pair wire. Because twist 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.
No
Repair wiring harness between coil and immobilizer unit.