Pinout Values and Diagnostic Parameters

THEFT DETERRENT / KEYLESS ENTRY: ENGINE IMMOBILISER SYSTEM: TERMINALS OF ECU

1. CHECK TRANSPONDER KEY AMPLIFIER

(a) Disconnect the E47 transponder key amplifier connector.

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

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

(c) Reconnect the E47 transponder key amplifier connector.

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

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 E29 transponder key ECU assembly connector.

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

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

(c) Reconnect the E29 transponder key ECU assembly connector.

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

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) Disconnect the B29 ECM connector.

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

*1: for 2AZ-FE

*2: for 2ZR-FE

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

(c) Reconnect the B29 ECM connector.

(d) 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.

(e) 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