Inspection steps
CAUTION:
- Some functions of the entry & start system (entry function) use the LIN communication system and the CAN communication system. Inspect the communication function by referring to "How to troubleshoot" (refer to HOW TO PROCEED WITH TROUBLESHOOTING ). Confirm that the communication system is functioning properly before proceeding to repair the entry & start system (entry function).
- Before replacing the collation ECM (smart key ECM ASSY), refer to "entry & start system (entry function)". (Refer to ENTRY & START SYSTEM (ENTRY FUNCTION) )
- Using SSM4, perform an [Active Test] (wireless buzzer).
- Connect the SSM4 to the DLC3.
- Turn the ignition switch to ON.
- Turn on the SSM4.
- Enter the following menus: [Body Control] →[Active Test]
- Based on the SSM4 display contents, perform an [Active Test].RANGE DESCRIPTION - MAIN BODY
Tester display Tested parts Control range Notes for diagnosis [Keyless Buzzer Output] Wireless door lock buzzer OFF/ON - Criteria: The wireless door lock buzzer beeps.
OK: Go to next step
NG: Go to Step 2.
Replacement of the collation ECM (smart key computer ASSY)
- Inspect the wireless door lock buzzer unit.
- Remove the wireless door lock buzzer. (Refer to WIRELESS DOOR LOCK BUZZER )
- Inspect the wireless door lock buzzer unit.
OK: Go to next step
NG: Replace the wireless door lock buzzer.
- Check the harnesses and connectors (main body ECM - wireless door lock buzzer and chassis ground).
- Disconnect the A63 wireless door lock buzzer connector.
- Disconnect the A73 main body ECM (multiplex network body ECM) connector.
- Measure the resistance according to the following table.
Resistance
Inspection terminals Inspection conditions Standard value A63-1 - A73-1 Always 1 Ωor less A63-2 - Chassis ground Always 1 Ωor less A63-1 - Chassis ground Always 10 kΩ or more OK: Go to next step
NG: Repair or replace the harnesses or connectors.
Replace the main body ECM (multiplex network body ECM).