Description
CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle multiplex communication line with high data communication speed and excellent error detection ability. Many electronic control units are equipped onto a vehicle, and each control unit shares information and links with other control units during operation (not independent). In CAN communication, control units are connected with 2 communication lines (CAN H line, CAN L line) allowing a high rate of information transmission with less wiring.
Each control unit transmits/receives data but selectively reads required data only.
DTC Description
DTC DETECTION LOGIC
| DTC No. | CONSULT screen terms (Trouble diagnosis content) | DTC detecting cond |
| U0101 | LOST COMM (TCM) (Lost communication with TCM) | When ECM is not transmitting or receiving CAN communication signal of OBD (emission-related diagnosis) with TCM for 2 seconds or more. |
POSSIBLE CAUSE
CAN communication line between TCM and ECM
FAIL-SAFE
Not applicable
DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE
Is DTC detected? YES >> Proceed to EC-169, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis Procedure
Perform the trouble diagnosis for CAN communication system. Refer to LAN-17, "Trouble Diagnosis Flow Chart".
Power supply and ground circuit
U1001 CAN comm circuitComponent parts
Component Parts Location
ENGINE ROOM COMPARTMENT
No.
Component
Function
1
IPDM E/R
IPDM E/R control the internal relays and the actuators.
Refer to PCS-5, "RELAY CONTROL SYSTEM : System
Description".
When CAN comm ...
Power seat switch
Exploded View
Seat cushion outer finisher
Power seat switch
Removal and Installation
REMOVAL
NOTE:
LH shown, RH similar.
Using a suitable tool release clips and remove seat cushion
outer finisher (1).
: Clip
Disconnect harness connector from power seat switch.
...
Inspection and adjustment
ADDITIONAL SERVICE WHEN REMOVING BATTERY NEGATIVE TERMINAL
ADDITIONAL SERVICE WHEN REMOVING BATTERY NEGATIVE TERMINAL : Description
If any of the following work has been done Initial setting is necessary.
Power supply to the main power window and door lock/unlock switch
or power windo ...