Engine Immobilizer System

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

1. CHECK POWER SWITCH

(a) Disconnect the L43 power switch connector.





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

HINT
Measure the values on the wire harness side with the connector disconnected.





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

(c) Reconnect the L43 power switch connector.

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





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

(e) Inspect using an oscilloscope.

(1) Waveform 1 (Reference)









(2) Waveform 2 (Reference)









(3) Waveform 3 (Reference)









2. CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

(a) Disconnect the L62 certification ECU (smart key ECU assembly) connector.





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

HINT
Measure the values on the wire harness side with the connector disconnected.





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

(c) Reconnect the L62 certification ECU (smart key ECU assembly) connector.

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





* *: except Canada

* If the result is not as specified, the certification ECU (smart 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)









(5) Waveform 5 (Reference)









3. CHECK ID CODE BOX (IMMOBILISER CODE ECU) (for Canada)

(a) Disconnect the L10 ID code box (immobiliser code ECU) connector.





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

HINT
Measure the values on the wire harness side with the connector disconnected.





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

(c) Reconnect the L10 ID code box (immobiliser code ECU) connector.

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





* If the result is not as specified, the ID code box (immobiliser code ECU) may have a malfunction.

(e) Inspect using an oscilloscope.

(1) Waveform 1 (Reference)









(2) Waveform 2 (Reference)









4. CHECK TRANSMISSION CONTROL ECU ASSEMBLY

(a) Disconnect the A23 and A24 transmission control ECU assembly connectors.





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

HINT
Measure the values on the wire harness side with the connectors disconnected.





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

5. CHECK POWER MANAGEMENT CONTROL ECU (HV CPU)

(a) Disconnect the L5 power management control ECU (HV CPU) connector.





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

HINT
Measure the values on the wire harness side with the connector disconnected.





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

(c) Reconnect the L5 power management control ECU (HV CPU) connector.

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





* *1: except Canada

* *2: for Canada

* If the result is not as specified, the power management control ECU (HV CPU) may have a malfunction.

(e) Waveform:

(1) Waveform 1 (Reference)









(2) Waveform 2 (Reference)









6. COMBINATION METER ASSEMBLY

(a) Disconnect the L27 combination meter assembly connector.





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

HINT
Measure the values on the wire harness side with the connector disconnected.





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

(c) Reconnect the L27 combination meter assembly connector.

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





If the result is not as specified, the combination meter assembly may have a malfunction.