From 08/2009

THEFT DETERRENT / KEYLESS ENTRY: SMART ACCESS SYSTEM WITH PUSH-BUTTON START (for Start Function): U0293: Lost Communication with HV ECU
U0293 - Lost Communication with HV ECU

DESCRIPTION

This DTC is stored when the power management control ECU detects a CAN communication error inside the power management control ECU (power control section - HV control section).





WIRING DIAGRAM





INSPECTION PROCEDURE

NOTICE:
When the power management control ECU is replaced with a new one and the cable from the negative (-) auxiliary battery terminal is connected, the power source mode becomes on (IG) mode. When the auxiliary battery is removed and reinstalled, the power source mode that was selected when the auxiliary battery was removed is reinstalled.

PROCEDURE

1. CHECK HARNESS AND CONNECTOR (AUXILIARY BATTERY - POWER MANAGEMENT CONTROL ECU) B2271

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR (AUXILIARY BATTERY - POWER MANAGEMENT CONTROL ECU)
OK -- Continue to next step.

2. CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - BODY GROUND) B2271

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER MANAGEMENT CONTROL ECU - BODY GROUND)
OK -- Continue to next step.

3. CHECK FOR DTC

(a) Clear the DTC Smart Access System With Push-Button Start (for Start Function).

(b) Check for DTC again.

OK:

DTC U0293 is not output

NG -- REPLACE POWER MANAGEMENT CONTROL ECU Removal

OK -- USE SIMULATION METHOD TO CHECK How To Proceed With Troubleshooting