Engine Immobilizer System (w/o Smart Key System)

THEFT DETERRENT / KEYLESS ENTRY: ENGINE IMMOBILISER SYSTEM (w/o Smart Key System): TERMINALS OF ECU

1. CHECK TRANSPONDER KEY AMPLIFIER

(a) Disconnect the E29 transponder key amplifier connector.





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





* *1: for TMC Made

* *2: Except for TMC Made

If the result is not as specified, there may be a malfunction on the wire harness side.

(c) Reconnect the E29 transponder key amplifier connector.

(d) Measure the voltage according to the value(s) in the table below.





* *1: for TMC Made

* *2: Except for TMC Made

If the result is not as specified, the transponder key amplifier may have a malfunction.

(e) Inspect using an oscilloscope.

(1) Waveform 1 (Reference)









(2) Waveform 2 (Reference)









2. CHECK TRANSPONDER KEY ECU ASSEMBLY

(a) Disconnect the E21 transponder key ECU assembly connector.





(b) Measure the resistance and voltage according to the value(s) in the table below.





* *1: for TMC Made

* *2: Except for TMC Made

If the result is not as specified, there may be a malfunction on the wire harness side.

(c) Reconnect the E21 transponder key ECU assembly connector.

(d) Measure the resistance and voltage according to the value(s) in the table below.





* *1: for TMC Made

* *2: Except for TMC Made

If the result is not as specified, the transponder key ECU assembly may have a malfunction.

(e) Inspect using an oscilloscope.

(1) Waveform 1 (Reference)









(2) Waveform 2 (Reference)









(3) Waveform 3 (Reference)









(4) Waveform 4 (Reference)









3. CHECK ECM

(a) Measure the voltage according to the value(s) in the table below.









* *1: for 2AZ-FE

* *2: for 2ZR-FE

If the result is not as specified, the ECM may have a malfunction.

(b) Inspect using an oscilloscope.

(1) Waveform 1 (Reference)









* *1: for 2AZ-FE

* *2: for 2ZR-FE

(2) Waveform 2 (Reference)









* *1: for 2AZ-FE

* *2: for 2ZR-FE