Antenna Coil Open / Short

DTC B2784 Antenna Coil Open / Short

DESCRIPTION

The transponder key coil is built into the transponder key amplifier and receives a key code signal from the transponder chip in the key. This signal is amplified by the amplifier, and output to the transponder key ECU.

WIRING DIAGRAM

INSPECTION PROCEDURE

1 READ VALUE OF INTELLIGENT TESTER

1. 1
   Connect the intelligent tester (with CAN VIM) to the DLC3.
2. 2
   Turn the ignition switch on and turn the intelligent tester main switch on.
3. 3
   Select ANTENNA COIL in the DATA LIST and read the value displayed on the intelligent tester.

Transponder key ECU:

OK: NORMAL (Antenna coil is normal) appears on the screen.

2 CHECK HARNESS AND CONNECTOR (TRANSPONDER KEY ECU ASSEMBLY -TRANSPONDER KEY AMPLIFIER)

1. 1
   Disconnect the T6 ECU and I14 switch connectors.
2. 2
   Measure the resistance according to the value(s) in the table below.

Resistance

3 INSPECT TRANSPONDER KEY ECU ASSEMBLY

1. 1
   Reconnect the T6 ECU and I14 amplifier connectors.
2. 2
   Measure the voltage according to the value(s) in the table below.

Voltage

3. Measure the resistance according to the value(s) in the table below.

Resistance

REPLACE TRANSPONDER KEY AMPLIFIER