Engine Immobiliser System
TERMINALS OF ECU1. CHECK TRANSPONDER KEY AMPLIFIER
a. Disconnect the T20 amplifier connector and measure the resistance between the terminal of the wire harness side connector and body ground.
If the result is not as specified, there may be a malfunction in the wire harness.
b. Reconnect the T20 amplifier connector and measure the resistance and voltage according to the value(s) in the table.
c. Disconnect the transponder key coil connector and measure the resistance between each terminal of the connector.
d. Inspect using an oscilloscope.
2. CHECK TRANSPONDER KEY ECU ASSEMBLY
a. Disconnect the T19 ECU connector and measure the resistance and voltage according to the value(s) in the table.
If the result is not as specified, there may be a malfunction in the wire harness.
b. Reconnect the T19 ECU connector and measure the resistance and voltage according to the value(s) in the table.
Oscilloscope Waveforms:
c. Inspect using an oscilloscope.
3. CHECK ECM
a. Disconnect the E5 ECM connector and measure the resistance between the terminal of the wire harness side connector and body ground.
If the result is not as specified, the coil may have a malfunction.
b. Reconnect the E5 ECM connector. Measure the voltage between the terminals of the connector according to the value(s) in the table.