How To Proceed With Troubleshooting

NOTE:

Refer to the troubleshooting procedures of each system if DTCs regarding the CAN communication system are not output.
If U0100-211 or U0111-208 is output separately by the hybrid vehicle control ECU, refer to "HYBRID CONTROL SYSTEM" (See DIAGNOSTIC TROUBLE CODE CHART ).

HINT:

*: Use the intelligent tester (with CAN VIM).

VEHICLE BROUGHT TO WORKSHOP
NEXT
INSPECT BATTERY VOLTAGE
Standard voltage: 11 to 14 V

If the voltage is below 11 V, recharge or replace the battery before proceeding.

NEXT
CHECK CAN BUS LINE
1. Check the CAN bus line (see CAN BUS LINE ).
NEXT
CHECK FOR INSTALLED SYSTEMS (ECU & SENSOR) THAT USE CAN COMMUNICATION
1. Check if the enhanced VSC is installed (see TERMINALS OF ECU ).
NEXT
CHECK AND CLEAR DTC*
NEXT

PERFORM BUS CHECK WITH INTELLIGENT TESTER

Select the "BUS CHECK" (see DIAGNOSIS SYSTEM ).

Result

RESULT

Result	Proceed to
All ECUs and sensors connected to the CAN communication system are displayed.	A
An ECU or sensor not connected to the CAN communication system is displayed.	B

NOTE:

See "MULTIPLEX COMMUNICATION SYSTEM" (page MP-7) if U0146 (Lost Communication with Gateway "A") and P3108-594 (Lost Communication with A/C System Control Module) are output and "BODY / GATEWAY" appears on the "BUS CHECK" screen of the intelligent tester via the CAN VIM.
The systems (ECUs, sensors) that use CAN communication vary depending on the vehicle and option settings. Check which systems (ECUs, sensors) are installed on the vehicle (see DIAGNOSIS SYSTEM ).
Non-installed ECUs or sensors are not displayed. Do not mistake them for being in the communication stop mode.

B : GO TO PROBLEM SYMPTOMS TABLE (COMMUNICATION STOP MODE TABLE)

A : GO TO NEXT STEP