10C
DTC 21: Communication Line Between Immobilizer Control Module and Coil Antenna Shorted to Power Circuit
DTC Detecting Condition and Trouble Area
DTC detecting condition Trouble area
Short to power circuit in communication line between Immobilizer Control Module and coil antenna. Communication line between Immobilizer Control Module and coil antenna
DTC Troubleshooting
Step Action YES NO
1
Check for short to power circuit in communication line between Immobilizer Control Module and coil antenna.
1) With ignition switch at ON position, check voltage between “G46-11” wire terminal at Immobilizer Control Module and body ground.
Is it more than 12 V?
Repair short to power circuit in communication line between Immobilizer Control Module and coil antenna.
Go to Step 2.
2
Coil antenna check.
1) Remove coil antenna referring to Coil Antenna Removal and Installation:K9K Model .
2) Inspect coil antenna referring to Coil Antenna Inspection:K9K Model .
Is it normal?
Replace Immobilizer Control Module with new one referring to Immobilizer Control Module Removal and Installation:K9K Model . And then, perform key registration referring to “Procedure after Immobilizer Control Module Replacement” in Registration Procedure of Immobilizer Control System Components:K9K Model .
Replace coil antenna with new one.