Engine Immobiliser System (w/o Smart Key System)

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

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: TMC Made
- *2: NUMMI, TMMC 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: TMC Made
- *2: NUMMI, TMMC 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: TMC Made
- *2: NUMMI, TMMC 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: TMC Made
- *2: NUMMI, TMMC 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.









If the result is not as specified, the ECM may have a malfunction.
(b) Inspect using an oscilloscope.




(1) Waveform 1 (Reference)









(2) Waveform 2 (Reference)