- After translate ECU completes output signal, signal is not sent for 5 seconds or more
- Bus off condition occurs one time or more within 100 msec., and this occurs 10 times in a row
| Last Modified: 7-3-2017 | 6.8:8.0.40 | Doc ID: RM000001A6Z005X |
| Model Year Start: 2007 | Model: LX470 | Prod Date Range: [08/2006 - ] |
| Title: BRAKE CONTROL: VEHICLE STABILITY CONTROL SYSTEM: U0073/94,U0100/65; Control Module Communication Bus OFF; 2007 MY LX470 [08/2006 - ] | ||
|
DTC |
U0073/94 |
Control Module Communication Bus OFF |
|
DTC |
U0100/65 |
Lost Communication with ECM / PCM |
DESCRIPTION
The translate ECU inputs the signals from the ECM via the CAN communication system.
|
DTC No. |
DTC Detection Condition |
Trouble Area |
|---|---|---|
|
U0073/94 |
When using translate ECU to determine malfunction*: Both of following conditions are met: When using VSC ECU to determine malfunction*: When IG1 voltage is 0.5 V or more and vehicle speed is 15 km/h (9 mph) or more, signals from malfunctioning translate ECU (as described above) are received continuously for 2 seconds or more |
Communication line between engine control ECU and Translate ECU (CAN communication line) |
|
U0100/65 |
When using translate ECU to determine malfunction*: Both of following conditions are met:
When using VSC ECU to determine malfunction*: When IG1 voltage is 0.5 V or more and vehicle speed is 15 km/h (9 mph) or more, signals from malfunctioning translate ECU (as described above) are received continuously for 2 seconds or more |
Communication line between engine control ECU and Translate ECU (CAN communication line) |
HINT:
*: For CAN communication malfunctions, after the malfunction is determined using the translate ECU, the results are sent to the VSC ECU. In total, this takes 7 seconds.
INSPECTION PROCEDURE
HINT:
This circuit uses the CAN communication. Therefore, if there are any malfunctions in the communication circuit, one or more DTCs in the CAN communication system will be output.
PROCEDURE
|
1. |
RECONFIRM DTC |
(a) Clear the DTC.
(b) Start the engine.
(c) Drive the vehicle at a speed of 15 km/h (9 mph) and turn the steering wheel to the right and left.
(d) Check that no CAN communication system DTC is output.
(e) If ABS and VSC DTCs are output, record them.
Result:
|
Result |
Proceed to |
|---|---|
|
DTC is output for the CAN communication system |
A
|
|
DTC is output (ABS and VSC DTCs are output) |
B |
|
DTC is not output |
C |
![2007 MY LX470 [08/2006 - ]; CAN COMMUNICATION: CAN COMMUNICATION SYSTEM: HOW TO PROCEED WITH TROUBLESHOOTING](../../../../stylegraphics/info.gif "2007 MY LX470 [08/2006 - ]; CAN COMMUNICATION: CAN COMMUNICATION SYSTEM: HOW TO PROCEED WITH TROUBLESHOOTING")
| B |
|
| C |
|
| A |
|
|
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