Operation CHARM: Car repair manuals for everyone.
Home >> Toyota >> 2012 >> Prius PHV L4-1.8L (2ZR-FXE) Hybrid >> Repair and Diagnosis >> Accessories and Optional Equipment >> Antitheft and Alarm Systems >> Testing and Inspection >> Pinout Values and Diagnostic Parameters >> Smart Key System (for Start Function)
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

Or, hide this message: temporarily or permanently

Smart Key System (for Start Function)





THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function): TERMINALS OF ECU

1. CHECK POWER MANAGEMENT CONTROL ECU





(a) Disconnect the A86, L135 and L136 connectors.

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





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

(c) Reconnect the A86, L135 and L136 connectors.

(d) Measure the voltage and check for pulses according to the value(s) in the table below.





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

(e) Using an oscilloscope, check the signal waveform of the ECU.

(1) Waveform 1









(2) Waveform 2









HINT
The wavelength becomes shorter as the vehicle speed increases.

(3) Waveform 3









(4) Waveform 4









2. CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)





(a) Disconnect the L62 connector.

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





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

(c) Reconnect the L62 connector.

(d) Check for pulses according to the value(s) in the table below.





* *1: for Canada

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

(e) Using an oscilloscope, check the signal waveform of the ECU.

(1) Waveform 1









3. CHECK TRANSMISSION CONTROL ECU ASSEMBLY





(a) Disconnect the A23 and A24 connectors.

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





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

4. CHECK ID CODE BOX (IMMOBILISER CODE ECU) [for Canada]





(a) Disconnect the L10 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 in the wire harness.
pro multis · About Operation CHARM